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All News
New SBCL versions are usually released at the end of each month:
check the Sourceforge File List to see the current version. The new
features of all SBCL releases are listed below.
* 2.2.9
* 2.2.8
* 2.2.7
* 2.2.6
* 2.2.5
* 2.2.4
* 2.2.3
* 2.2.2
* 2.2.1
* 2.2.0
* 2.1.11
* 2.1.10
* 2.1.9
* 2.1.8
* 2.1.7
* 2.1.6
* 2.1.5
* 2.1.4
* 2.1.3
* 2.1.2
* 2.1.1
* 2.1.0
* 2.0.11
* 2.0.10
* 2.0.9
* 2.0.8
* 2.0.7
* 2.0.6
* 2.0.5
* 2.0.4
* 2.0.3
* 2.0.2
* 2.0.1
* 2.0.0
* 1.5.9
* 1.5.8
* 1.5.7
* 1.5.6
* 1.5.5
* 1.5.4
* 1.5.3
* 1.5.2
* 1.5.1
* 1.5.0
* 1.4.16
* 1.4.15
* 1.4.14
* 1.4.13
* 1.4.12
* 1.4.11
* 1.4.10
* 1.4.9
* 1.4.8
* 1.4.7
* 1.4.6
* 1.4.5
* 1.4.4
* 1.4.3
* 1.4.2
* 1.4.1
* 1.4.0
* 1.3.21
* 1.3.20
* 1.3.19
* 1.3.18
* 1.3.17
* 1.3.16
* 1.3.15
* 1.3.14
* 1.3.13
* 1.3.12
* 1.3.11
* 1.3.10
* 1.3.9
* 1.3.8
* 1.3.7
* 1.3.6
* 1.3.5
* 1.3.4
* 1.3.3
* 1.3.2
* 1.3.1
* 1.3.0
* 1.2.16
* 1.2.15
* 1.2.14
* 1.2.13
* 1.2.12
* 1.2.11
* 1.2.10
* 1.2.9
* 1.2.8
* 1.2.7
* 1.2.6
* 1.2.5
* 1.2.4
* 1.2.3
* 1.2.2
* 1.2.1
* 1.2.0
* 1.1.18
* 1.1.17
* 1.1.16
* 1.1.15
* 1.1.14
* 1.1.13
* 1.1.12
* 1.1.11
* 1.1.10
* 1.1.9
* 1.1.8
* 1.1.7
* 1.1.6
* 1.1.5
* 1.1.4
* 1.1.3
* 1.1.2
* 1.1.1
* 1.1.0
* 1.0.58
* 1.0.57
* 1.0.56
* 1.0.55
* 1.0.54
* 1.0.53
* 1.0.52
* 1.0.51
* 1.0.50
* 1.0.49
* 1.0.48
* 1.0.47
* 1.0.46
* 1.0.45
* 1.0.44
* 1.0.43
* 1.0.42
* 1.0.41
* 1.0.40
* 1.0.39
* 1.0.38
* 1.0.37
* 1.0.36
* 1.0.35
* 1.0.34
* 1.0.33
* 1.0.32
* 1.0.31
* 1.0.30
* 1.0.29
* 1.0.28
* 1.0.27
* 1.0.26
* 1.0.25
* 1.0.24
* 1.0.23
* 1.0.22
* 1.0.21
* 1.0.20
* 1.0.19
* 1.0.18
* 1.0.17
* 1.0.16
* 1.0.15
* 1.0.14
* 1.0.13
* 1.0.12
* 1.0.11
* 1.0.10
* 1.0.9
* 1.0.8
* 1.0.7
* 1.0.6
* 1.0.5
* 1.0.4
* 1.0.3
* 1.0.2
* 1.0.1
* 1.0
* 0.9.18
* 0.9.17
* 0.9.16
* 0.9.15
* 0.9.14
* 0.9.13
* 0.9.12
* 0.9.11
* 0.9.10
* 0.9.9
* 0.9.8
* 0.9.7
* 0.9.6
* 0.9.5
* 0.9.4
* 0.9.3
* 0.9.2
* 0.9.1
* 0.9.0
* 0.8.21
* 0.8.20
* 0.8.19
* 0.8.18
* 0.8.17
* 0.8.16
* 0.8.15
* 0.8.14
* 0.8.13
* 0.8.12
* 0.8.11
* 0.8.10
* 0.8.9
* 0.8.8
* 0.8.7
* 0.8.6
* 0.8.5
* 0.8.4
* 0.8.3
* 0.8.2
* 0.8.1
* 0.8.0
* 0.8alpha.0
* 0.7.14
* 0.7.13
* 0.7.12
* 0.7.11
* 0.7.10
* 0.7.9
* 0.7.8
* 0.7.7
* 0.7.6
* 0.7.5
* 0.7.4
* 0.7.3
* 0.7.2
* 0.7.1
* 0.7.0
* 0.6.13
* 0.6.12
* 0.6.11
* 0.6.10
* 0.6.9
* 0.6.8
* 0.6.7
* 0.6.6
* 0.6.5
* 0.6.4
* 0.6.3
* 0.6.2
* 0.6.1
* 0.6.0
New in version 2.2.9, 2022-09-29
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* platform support:
+ fix build on Darwin platforms with -fno-common. (#1980570,
thanks to Sergei Trofimovich)
+ include /usr/local paths when building on FreeBSD. (#1981112,
reported by William G Lederer)
+ several micro-optimizations on x86-64, including: better use
of INC/SUB, better SAP+, shorter KEYWORDP, better argument
count verification
+ arm64: better KEYWORDP, better argument count verification
+ fix build on 32-bit Windows. (#1988534, thanks to Alexis
Rivera)
+ x86-64: WITH-PINNED-OBJECTS can pin constants. (#1989037)
* bug fix: make sb-simd build in compiler-only SBCL. (thanks to
Tonas Hlavaty)
* bug fix: SB-SPROF:WITH-PROFILING now returns the value of its
body (as was advertised in its documentation).
* bug fix: catch malformed LET* forms in DEFMETHOD bodies. (#
1988880, reported by Patrick Poitras)
* enhancement: better source form tracking for atoms in LET
bindings.
* optimization: reader character macro lookup is simpler and
faster.
* optimization: FILL-POINTER (and its setter) are more compact.
New in version 2.2.8, 2022-08-30
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* minor incompatible change: support for 32-bit x86/Darwin has been
removed.
* bug fix: fix miscompilation related to empty infinite loops
preceded by conditional expressions. (#1986810, reported by
Artyom Bologov)
* bug fix: fix gc invariant violations. (#1983218, reported by
Marius Gerbershagen; #1983248, reported by Vasily Postnicov)
* bug fix: use CC to compile SBCL as a shared library. (#1976148,
reported by Pierre Neidhardt)
* bug fix: don't crash the system completely if RUN-PROGRAM fails
to create a pipe. (#1979841, reported by Thor Kristofferson)
* bug fix: be more disciplined about use of C system includes. (#
1981799, reported by Mark Evenson)
* bug fix: STRING/= returning wrong results for some cases when
:END1/:END2 were not compile-time constants. (#1983284)
* bug fix: compile-time checking of :START and :END keyword
arguments to FILL is more complete.
* optimization: adjacent type tests on the same value are more
compact (arm64, x86-64).
* optimization: the compiler can inline COPY-STRUCTURE in more
cases.
* optimization: type checks for non-simple arrays are shorter.
* optimization: printing strings (as Lisp data) is faster.
New in version 2.2.7, 2022-07-29
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* minor incompatible change: the compiler emits full WARNINGs for
undefined references to variables in TYPE and DYNAMIC-EXTENT
declarations, and for SETQ of an undefined variable. (This was
the historic behaviour for everything except the DYNAMIC-EXTENT
case, which used to emit a STYLE-WARNING, but these diagnostics
got lost in a refactoring since sbcl-2.2.2)
* minor incompatible change: literal objects (strings, in
particular) in compiled code may at the discretion of the runtime
be placed in read-only memory. Violations of CLHS 3.7.1 could
produce memory faults. If ":PURIFY NIL" is given to
SAVE-LISP-AND-DIE then no read-only memory will be used.
* enhancement: Unicode support has been updated to support version
10.0.0 of the Unicode standard, including addition of characters
and refinements to breaking and collation algorithms.
* bug fix: AVX is no longer used for loading simd-pack-256
constants. (#1928097)
* bug fix: fix building the manual when some contribs are blocked
or otherwise disabled. (#1979821, thanks to Robert Schiele)
* bug fix: fix type derivation of sequence functions with
highly-specific declared argument types. (#1980292, reported by
James Kalenius)
* bug fix: internal error when optimizing chains of conditionals in
local functions. (#1981607, reported by Pasha K)
* bug fix: fix comparison of negative floats with bignums.
* optimization: faster TRUNCATE with float arguments.
* optimization: EQUALP hashing of large floating point values
should generate less garbage.
New in version 2.2.6, 2022-06-30
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* minor incompatible change: support for 32-bit x86 on macOS has
been removed.
* new contrib: sb-simd, to provide a convenient interface for SIMD
programming on x86-64. (Thanks to Marco Heisig and other sb-simd
contributors)
* enhancement: core compression now uses zstd instead of zlib. (#
1881089)
* enhancement: provide compiler warnings for specialized array type
mismatches in CONCATENATE.
* enhancement: provide compiler warnings for bad sequence bounding
index designator arguments to sequence functions.
* enhancement: The sb-mpfr contrib now allows coercion from
MPFR-FLOATs to CL:RATIONAL. (Thanks to Robert Smith)
* bug fix: fix compilation failure related to declaiming types of
constants. (#1977726, reported by Pierre Neidhardt)
* bug fix: fix race condition in CLOS optimized constructors. (#
1951341)
* bug fix: fix too-eager elision of allocation barriers when
initializing closure and structure objects.
* optimization: fasl files are now usually smaller (up to 10% on
default policy) and may load faster, especially on high debug.
* optimization: faster string comparisons on arm64, x86-64.
* optimization: faster [n]string-down/upcase on arm64, x86-64.
* optimization: faster [n]reverse for 8- and 32-bit element vectors
on arm64, x86-64.
* optimization: faster type tests for (CONS (EQL symbol)) on
x86-64.
New in version 2.2.5, 2022-05-30
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* minor incompatible change: SB-EXT:*DERIVE-FUNCTION-TYPES* being
NIL now means that function calls will strictly only use type
information from proclaimed ftypes. The previous behavior (still
the default) of using derived type information from the same file
is specified with :SAME-FILE. (#1393302)
* minor incompatible change: RENAME-FILE now overwrites the target
file on Windows too, making its behaviour consistent with other
platforms.
* minor incompatible change: inlining of local function is
inhibited if policy DEBUG = 3.
* platform support:
+ single-stepping is now supported on 64-bit PowerPC platforms.
(thanks to Thomas Fitzsimmons)
+ the :SB-LINKABLE-RUNTIME feature is now supported on 32-bit
and 64-bit PowerPC platforms. (thanks to Thomas Fitzsimmons)
* optimization: improved type derivation of REDUCE with some known
reducing functions.
* enhancement: debug source locations now work correctly for top
level forms with policy DEBUG = 1, as well as for block compiled
files.
* enhancement: TRACE now supports tracing macro functions,
compiler-macro functions, individual methods and local functions.
See the user manual for more details. (#375314)
* bug fix: fix integer comparisons on x86-64 and arm64 (#1971088,
reported by Guillaume LE VAILLANT)
* bug fix: coverage instrumentation behaves correctly with respect
to non-local exits.
* bug fix: ftype proclamations now take effect immediately during
block compilation.
* bug fix: block compilation of top-level closures now work. (#
1931730, reported by Sean Maher)
* bug fix: streams opened from RUN-PROGRAM but left unclosed
because of a non-local exit no longer cause unrelated streams to
be closed later.
New in version 2.2.4, 2022-04-29
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* enhancement: better constraint propagation in the compiler.
Specifically, the compiler can now derive the type of X in
control flow join situations such as (LAMBDA (X) (ECASE (1 ...)
(2 ...)) X) or (LAMBDA (X) (ETYPECASE (INTEGER ...) (SYMBOL ...))
X) instead of forgetting all information about X after the E
(TYPE)CASE.
* optimization: inlined functions enclosed in local macro
definitions no longer save their entire lexical environment,
reducing unnecessary memory retention.
* optimization: faster (< integer fixnum) comparisons (ARM64 and
x86-64).
* platform support:
+ RUN-PROGRAM is faster on Linux and FreeBSD if close_range(2)
is available.
* bug fix: block compilation now interacts more correctly with the
creation of new packages.
* bug fix: internal compiler error in array reference optimizer. (#
1966624)
New in version 2.2.3, 2022-03-28
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* minor incompatible change: SB-THREAD:MUTEX-OWNER may return
:THREAD-DEAD if the apparent owner either exited nearly instantly
after releasing the mutex (and is not now the owner), or died and
never released it.
* minor incompatible change: building the system with the simple
semi-space copying collector is no longer supported.
* minor incompatible change: support for PPC/Darwin has been
removed.
* platform support:
+ fix regressions in threads on RISC-V. (#1962598)
+ threads are now enabled by default on RISC-V.
+ The generational garbage collector is now supported on MIPS.
* optimization: fasls containing standard object literals are now
smaller and load more efficiently.
* optimization: faster arithmetic (*-+) on word-sized integers when
the result is not known to fit into a word (ARM64 and x86-64).
* bug fix: EQness of constants is now always preserved when block
compiling.
New in version 2.2.2, 2022-02-26
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* platform support:
+ all architectures now share the coverage mark instrumentation
implementation, meaning that performance now equals what had
been implemented only on x86 architectures.
+ fixed a performance regression on x86-64 from changes in AVX2
register handling. (#1960081, reported by Michael Kappert)
+ fixed a garbage collection bug on ppc64 manifesting in
occasional corruption on threaded programs. (#1959338, #
1952973)
+ micro-optimizations in type tests for (SIGNED-BYTE 64).
* enhancement: improved handling of source locations for some
classes of compile time and runtime errors.
* enhancement: better source locations for structure accessors.
* bug fix: SB-COVER now always instruments top level forms
correctly.
* bug fix: muffling conditions now works correctly on higher debug
settings.
* bug fix: local muffling declarations now scope correctly with
respect to undefined variable warnings.
* optimization: calls to STRING= can now return NIL more quickly on
strings of unequal length.
New in version 2.2.1, 2022-01-30
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* incompatible change: DEFINE-ALIEN-CALLBACK, which has never been
exported from a public package, has been deleted. It is
superseded by SB-ALIEN:DEFINE-ALIEN-CALLABLE.
* minor incompatible change: compiler warnings are emitted on more
provably-erroneous code involving sequence functions on
specialized arrays.
* platform support:
+ support getting thread IDs on FreeBSD. (thanks to Felix
Lange)
+ faster function call sequence on arm64.
+ the built-in buffer size for file streams is increased to
8KB.
* enhancement: provide a restart for method lambda list mismatches
that fmakunbounds the generic function.
* enhancement: provide a USE-VALUE restart around type errors
signalled from (SETF SLOT-VALUE).
* enhancement: when UPDATE-INSTANCE-FOR-DIFFERENT-CLASS (or
-REDEFINED-) undergoes a non-local exit, restore the instance to
its original state. (thanks to Michal phoe Herda)
* enhancement: the :SYNCHRONIZED keyword argument to
MAKE-HASH-TABLE is no longer experimental.
* bug fix: fix an erroneous compiler tranform for (EXPT
SINGLE-FLOAT INTEGER). (#1958061, thanks to Vasily Postnicov)
* bug fix: disassembly of closures is more likely to show the
relevant code if more than one closure closes over the same
environment. (#1956870, reported by Michal phoe Herda)
* bug fix: RUN-PROGRAM with :IF-EXISTS :APPEND no longer signals an
error if the output does not exist. (#1958569, thanks to Ingo
Krabbe)
* optimization: reorder basic blocks to have loop code fall through
more often. (thanks to Hayley Patton)
* optimization: sequences larger than the buffer size are written
to streams without going through a buffering stage. (reported by
Philipp Marek)
New in version 2.2.0, 2021-12-30
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* platform support:
+ support for FreeBSD on 64-bit arm platforms has been added.
+ the :SB-LINKABLE-RUNTIME build-time feature is now supported
on 32-bit and 64-bit arm platforms, and on the FreeBSD
operating system.
+ bug fix: correct encoding for vmovsd. (#1953483, reported by
Marco Heisig)
+ bug fix: support ABIv1 callbacks on big-endian ppc64. (#
1900343, thanks to Thomas Fitzsimmons)
+ bug fix: don't misuse mprotect() in dynamic space on Windows.
(#1955723, reported by 3b)
* enhancement: catch type mismatches for REPLACE, SUBSTITUTE,
MAKE-ARRAY with :INITIAL-CONTENTS.
* optimization: printing symbols is around 10% faster than
previously.
* bug fix: don't use the current type of non-returning functions
when redefining them in another file. (#1953214, reported by
Nicolas Hafner)
* bug fix: eliminate stack cleanups more conservatively. (#1954330,
reported by Daniel Kochmanski)
* bug fix: check consistently in tests for the existence of VOPs. (
#1952896, reported by Sebastien Villemot)
New in version 2.1.11, 2021-11-30
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* minor incompatible change: *COMPILE-PRINT* now defaults to NIL. T
gives the old behavior of echoing top level forms. Users who want
to see a report of the phases of compilation can use
*COMPILE-PROGRESS* and the corresponding COMPILE-FILE :PROGRESS
argument.
* optimization: The compiler assignment-converts functions much
more aggressively; local or non-entry block-compiled functions
which always return to the same place are automatically converted
into the equivalent loop or goto control structures.
* enhancement: on x86-64 and ppc64 platforms, the system uses
inline instructions rather than page protection to implement a
store barrier for the garbage collector.
* enhancement: improved reporting of code deletion notes.
* platform support:
+ unbound-variable restarts for amd64 are now supported.
+ bug fix: single-floats to foreign functions on 32-bit ARMel.
(#1950080, reported by Sebastien Villemot)
+ bug fix: opening files with names containing non-ASCII
characters on Windows works better. (reported by Nikolay)
+ bug fix: use fp_xsave to access the floating point flags and
control word in Haiku signal contexts. (Thanks to Al Hoang)
+ bug fix: complex single-float support on riscv64.
+ optimization: support for accessing elements of &rest args
directly on ppc64, mips, riscv.
+ optimization: parse a /proc file rather than executing uname
for SOFTWARE-VERSION on Linux
* bug fix: fix crash from SB-COVER:RESET-COVERAGE. (#1950059,
reported by Gregory Czerniak)
New in version 2.1.10, 2021-10-28
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* incompatible change: simd-pack without a specific element-type is
no longer treated as containing integers. A type must be supplied
for VOPs to work on such values.
* minor incompatible change: the list form of the FUNCTION type
specifier does not allow * as any argument type, but does allow *
as a placeholder for wholly unspecified arguments when specifying
the value(s) type.
* minor incompatible change: the default (Lisp) toplevel option
parser throws an error if it encounters an option which was
intended to be used and removed by the C runtime. (#1945081,
reported by Luke Gorrie)
* new feature: there is now a defined interface for defining
foreign callable functions, which can be used for passing
callbacks to foreign functions or for calling Lisp code from the
foreign world as a shared library (preliminary support). See the
revised manual section "Calling into Lisp From C" for more
details.
* enhancement: arg-count mismatches in self-calls in defmethod are
reported. (#1912436, reported by 3b)
* enhancement: the SB-CLTL2 contrib now returns type information
for generated structure accessors. (#1934859, reported by SATO
shinichi)
* optimization: code generation is improved for modular arithmetic
involving signed operations.
* platform support:
+ x86-64 machine code emitter crash when attempting to assemble
some vector instructions. (#1945975, thanks to Marco Heisig)
+ conditional move instructions are now supported on arm64.
+ a number of new peephole optimizations have been implemented
on arm64.
+ arm64 on Darwin now uses gcc-compatible thread-local storage.
* bug fix: compiler notes are no longer emitted when compiling
FORMATTER forms, including when implicitly triggered on a
constant string argument to FORMAT. (#1946246, reported by SATO
shinichi)
* bug fix: a compiler error when attempting to compile a call to
AREF with too many dimensions. (#1902985)
* bug fix: harmonize the behaviour of SLOT-BOUNDP on
non-standard-objects between the various ways in which it can be
called. (#732229, reported by Zach Beane)
* bug fix: FTRUNCATE and similar functions are now more careful
about deriving facts about the sign of zero they might return. (#
1732009, reported by Paul Dietz)
New in version 2.1.9, 2021-09-27
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* minor incompatible change: the experimental DEFCAS macro has been
removed.
* minor incompatible change: finalizing classes with slots with
duplicate symbol-names will only emit a warning if either slot
name is an exported symbol. (#1943559)
* platform support:
+ the debugger is better able to display SIMD packs. (thanks to
Marco Heisig)
+ fix a bug in zeroing YMM registers. (thanks to Marco Heisig)
+ fix instruction definitions for SSE blend and shuffle vector
instructions. (thanks to Marco Heisig)
+ handle heap corruption exceptions in our exception handler on
win64.
+ improve WAIT-UNTIL-FD-USABLE on Windows, reducing
busy-looping. (thanks to Fabio Almeida)
* bug fix: EQUALP hash tables whose keys contain arrays containing
floats should behave correctly. (#1942424, reported by Nicolas
Neuss)
New in version 2.1.8, 2021-08-30
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* minor incompatible change: the experimental DEFINE-CAS-EXPANDER
macro has been removed.
* minor incompatible change: the hooks in *INIT-HOOKS* are called
before starting the finalizer or other non-user threads. (thanks
to Sean Whitton)
* platform support:
+ many improvements to code generation on arm64.
+ avoid slow forms of the bit test instructions BT, BTS, BTR on
x86-64.
+ fix a bug in loading large core files on the Apple M1/arm64.
(thanks to Mayank Manjrekar)
+ fix a bug in loading core loading on the Apple M1/arm64.
(reported by Eric Timmons)
* enhancement: the block-compiler is more robust to files with
intermingled compile-time and load-time effects. The semantics of
the block-compiler remain not-entirely ANSI compatible. (thanks
to Sean Maher)
* enhancement: (CAS SAP-REF-) and CAS on alien integers is
implemented on ppc64 and x86-64, working towards fixing #1894057
* bug fix: fix OPEN-STREAM-P on streams closed by saving a core. (#
1938433, reported by Guillaume LE VAILLANT)
* bug fix: remove a spurious warning from COERCE. (#1920931,
reported by Andrew Berkley)
* bug fix: remove a warning from inlining SET-EXCLUSIVE-OR. (#
1936470, reported by Jerome Abela)
New in version 2.1.7, 2021-07-30
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* incompatible change: on certain platforms (currently just
x86-64), dynamic-extent arrays specialized on character and
numeric types and created without either :INITIAL-ELEMENT or
:INITIAL-CONTENTS will reflect previous contents of the stack
instead of #\null (or 0) in all elements.
* minor incompatible change: SB-SPROF:START-PROFILING no longer
silently does nothing if the clock is already running. It instead
stop and restarts with the newly provided options, and warns.
* minor incompatible change: the system attempts to refer to the
supplied pathname in compiler diagnostics, if relevant, rather
than the truename.
* enhancement: new contrib module sb-graph producing graphical
visualizations of Intermediate Representations of SBCL
compilation data structures.
* platform support:
+ improved code generation for unary minus in modular contexts
on arm64.
+ make the disassembler annotations slightly more robust on
arm64.
+ release space back to the Operating System on Windows.
+ improve the test for whether pages need to be committed on
Windows.
* optimization: the type of (LOOP ... COLLECT ...), and the type of
COLLECT INTO variables, is derived as LIST. (#1934577, reported
by SATO shinichi)
New in version 2.1.6, 2021-06-28
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* minor incompatible change: COMPILE-FILE does not merge the input
file's pathname-directory into the output path if :OUTPUT-FILE
was specified and has a directory that is not :UNSPECIFIC.
* platform support:
+ improvements to unwind code generation on arm64.
+ on x86-64, accept three operands for vshufpd. (reported by
Bela Pecsek)
+ on x86-64, improvements to use of popcount
+ improve exception handling on 64-bit Windows. (thanks to Luis
Borges de Oliveira)
* bug fix: allow use of macros with improper argument list. (#
1929623, thanks to Sean Maher)
* bug fix: COERCE no longer attempts to guess what the user meant
if they provide a type specifier of a union of types other than
STRING. (#1929614)
* bug fix: print a single trailing zero after the decimal point for
FORMAT ~E if there are no digits remaining to be printed and the
width allows it. (#883520)
New in version 2.1.5, 2021-05-31
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* minor incompatible change: on x86-64, the backend instruction
encoders for movzx and for string opcodes have changed their
semantics.
* platform support:
+ compatibility: support the latest MinGW on x86. (#1923325,
thanks to Alexis Rivera)
+ bug fix: on x86-64, fix instruction encoding for TEST on
RIP-relative addresses. (#1925808, reported by Shinmera on #
sbcl, thanks also to 3b)
+ bug fix: on x86-64, loading all-1s into an AVX2 register no
longer causes an error. (#1928516, thanks to Marco Heisig)
+ bug fix: on arm64, improve disassembly of ADD with constant 0
as MOV
+ enhancement: on arm64, support debugger commands
RETURN-FROM-FRAME and RESTART-FRAME more efficiently.
+ enhancement: on x86-64, add support for vshuf* AVX2
instructions. (reported by Bela Pecsek)
+ optimization: faster function calls on arm64.
+ optimization: (SETF SBIT) is faster on x86-64.
* bug fix: INTEGER-DECODE-FLOAT was computing the wrong answer for
denormal double floats. (#1926383, reported by Stavros Macrakis)
* bug fix: RANDOM on a floating point argument now does not cons.
(reported by Tito Latini)
* bug fix: fix a compiler crash in type derivation of LOGTEST. (#
1928243)
* bug fix: fix a compiler failure when a declared function type
contains a literal structure with a valid MAKE-LOAD-FORM method.
(#1929160, thanks to Yurii Hryhorenko)
* optimization: FBOUNDP on a constant symbol is now faster.
* optimization: file compilation now produces smaller fasls for
files which reference package literals.
* optimization: derive the type of calls to FLOAT-SIGN.
New in version 2.1.4, 2021-04-28
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* platform support:
+ work around address-space randomization causing instability
on new versions of MinGW. (#1921141)
* bug fix: RANDOM on floats returns values strictly less than the
float argument.
* bug fix: compiler error on x86-64 resulting from attempting to
zero a memory location with xor. (reported by Eric Marsden)
* optimization: extended loops updating iteration variables with
THEN can perform specialized arithmetic for those updates.
* optimization: in some cases, the jump table resulting from a
compilation of TYPECASE is simpler.
* optimization: on x86-64, IF BOUNDP followed by SYMBOL-VALUE can
elide some memory loads and tests.
New in version 2.1.3, 2021-03-28
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* minor incompatible change: support for the
:SB-SAFEPOINT-STRICTLY, :SB-THRUPTION, and :SB-WTIMER build
features has been removed
* platform support:
+ support for :SB-CORE-COMPRESSION on Darwin/ARM64
+ support ARM v8.1 atomic and compare-and-swap instructions
+ x86, x86-64: microoptimizations in multiple type-checking
routines
* bug fix: structures and conditions are now TYPEP all classes in
the class precedence list of their class. (reported by Luis
Oliveira)
* bug fix: derivation of the result type from subtraction sometimes
erroneously excluded zero. (#1916895)
* bug fix: reduce the number of places where the system
permissively accepts the symbol * as a type specifier where it
should not be accepted. (#1860919)
* bug fix: the code-walker used by the system's implementation of
CLOS can handle defuns declared inline. (reported by Don Cohen)
* optimization: EQUALP on specialized vectors and arrays is faster.
* optimization: support routines for EQUALP hash tables generate
less garbage.
New in version 2.1.2, 2021-03-01
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* platform support:
+ support for ARM64 macOS;
+ improvement in coverage mark implementation on non-x86oid
backends, approaching the existing x86oid support;
+ more empirically-robust retrieval of the program counter from
illegal instruction traps on SPARC;
+ retain fewer dead objects when saving cores with precise
collectors.
* incompatible change: MAP-ALL-SAMPLES and MAP-TRACE-SAMPLES are no
longer present in the SB-SPROF contrib module.
* minor incompatible change: SB-SPROF:WITH-PROFILING defaults to
all threads. SB-SPROF:START-PROFILING no longer accepts a
:SAMPLING keyword.
* enhancement: the sb-introspect contrib now supports finding the
lambda lists of method combinations. (thanks to Didier Verna)
* enhancement: short-form DEFSETF now stores a source-location.
* bug fix: canonical unions of CONS types were being incorrectly
computed. (#1912863, reported by James Kalenius)
* bug fix: better understanding of array simplicity (or otherwise)
in the type system. (#1903241)
* bug fix: unions of rational and integer types now have a single
canonical form, allowing more correct reasoning about them in the
type system.
* bug fix: less likely to overclaim certainty about type equality
of union types. (#1916040)
* bug fix: HANDLER-BIND evaluates the forms producing handler
functions only once. (#1916302, reported by Christophe Junke)
* optimization: FIND on constant sequences can be compiled into a
jump table, in a similar manner to POSITION
* optimization: the compiler's awareness of numeric contagion rules
for operations on pairs of floating point numbers is improved. (#
1914094, thanks to Andrew Berkley)
New in version 2.1.1, 2021-01-30
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* platform support:
+ restore non-threaded NetBSD builds;
+ adjust how the finalizer thread is started; (#1906571, #
1907872)
+ fix the encoding of PEXTR on x86-64;
* minor incompatible change: emit warnings for list iteration forms
when the object being iterated over is known not to be a list. (#
1908819, reported by Michael Fiano)
* bug fix: detect 2 or 1 as an invalid number of arguments passed
to optimized slot reading or writing effective method
respectively. (#1909659, reported by Michal Herda)
* bug fix: division by zero errors were in some cases not being
signalled. (#1910098, reported by il71)
* bug fix: erroneous coercions in the type system could lose
precision. (#1910294)
* bug fix: literal (read-time evaluated) NaNs in source code no
longer cause compiler crashes. (#1909881, reported by Michal
Herda)
* bug fix: detect more erroneous syntax in method bodies. (#1912362
, reported by Paul M. Rodriguez)
* optimization: the compiler's understanding of EXPT is improved,
reducing the introduction of COMPLEX types. (#1908830, reported
by Michael Fiano)
* optimization: the compiler is better at computing numeric
contagion when (COMPLEX FLOAT) types are involved.
* micro-optimizations:
+ moving from slightly-bigger-than-fixnum ranges is more
efficient on x86-64;
+ encode character comparisons with smaller operands on x86-64;
+ truncating (and related operations) on floats can be inlined
in more cases on 64-bit platforms;
+ rounding can use specialized instructions on ARM64 and on
x86-64 when SSE4 is available;
New in version 2.1.0, 2020-12-29
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* minor incompatible change: the MAKE-EA internal function, used in
the assembler, has been removed (affecting some libraries
defining their own Virtual Operations)
* new feature: SB-EXT:PRIMITIVE-OBJECT-SIZE can be used to
interrogate the low-level size in memory of objects. (#1636910,
reported by anquegi)
* platform support:
+ pass required -std argument to the compiler on Solaris (#
1885751, thanks to Jesse Off)
+ better treatment of non-ASCII program arguments on Windows (#
1907970, reported by Timofei Shatrov)
+ implement the improved TYPEP with structure types on all
other supported platforms (32-bit PowerPC, ARM, ARM64, MIPS,
SPARC, RISC-V)
* enhancement: stream dispatch (to vanilla ANSI / Gray / Simple
variants) has been rewritten and optimized, fixing a number of
bugs including:
+ performance of WRITE-SEQUENCE on composite streams (#309136)
+ handling of CLOSE on SYNONYM-STREAM (#1904257, reported by
Richard M Kreuter)
+ handling of CLOSE on BROADCAST-STREAM with no components (#
1904722, reported by Richard M Kreuter)
+ loading SB-SIMPLE-STREAMS breaks functionality of other
stream classes (#1908132)
+ some excessive consing in READ-LINE
* enhancements related to RUN-PROGRAM:
+ improved the documentation related to the ARGS argument (#
806733, reported by mon_key)
+ added a PRESERVE-FDS argument
* bug fix: ensure that TYPE-OF returns something even on internal
instances, which may become visible in the debugger. (#1908261,
reported by Philipp Marek)
* bug fix: iteration variables established by standard forms should
always be considered used by the compiler. (#719585, reported by
Roman Marynchak)
* bug fix: don't allow compiler transformations to weaken the
requirement against extended (list-form) function names in
FUNCALL and related operators. (#310069)
* bug fix: improve automated version number generation in branches.
(#897867, thanks to Martin Cracauer)
* bug fix: add possibly-spurious futex wakes when unwinding from a
call to futex-wait, to avoid deadlocks from interrupted waits. (#
1038034)
* bug fixes in the compiler:
+ error on malformed DESTRUCTURING-BIND (#1738638)
+ error on malformed SPECIAL declaration (#1740756)
+ error from use of VALUES type in COERCE (#1887712)
+ enforcement of FTYPE types involving &OPTIONAL (#1903932)
+ checking for proper-list-ness before applying transforms (#
1905512)
+ compilation of LAMBDA form including a malformed DEFUN (#
1906056)
+ memory fault from VALUES-related handling in high DEBUG code
(#1906563)
+ transforms handle explicit NIL arguments in :END arguments to
SEARCH (#1907924)
* bug fix: return COMPILED-FUNCTION for TYPE-OF on compiled
functions. (#1906583)
* some bugs were also closed in this release cycle as obsolete,
having been fixed by the passage of time or other change in the
environment:
+ floating point error reporting on OS X (#309454)
+ load-shared-library not working from non-main threads on OS X
(#592425)
* optimization: CONSTANTLY on constant arguments returns a more
efficient function. (#1852585)
* optimization: perform fewer Lisp/Alien representation conversions
in callbacks.
* optimization: perform fewer redundant widetag tests when doing
type tests of complicated union types.
* optimization: signed-integer division on machine-word sized
operands is now implemented using multiplication, affecting
TRUNCATE, FLOOR, CEILING, MOD and REM. (This optimization was
already performed on unsigned-integer division)
New in version 2.0.11, 2020-11-29
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* minor incompatible change: (ARRAY NIL (*)) is not a subtype of
STRING, as is consistent with a majority of maintained CL
implementations.
* minor incompatible change: ARRAY-RANK-LIMIT is decreased from
65529 to 256
* optimization: TYPEP on structure types is faster and more compact
on x86[-64] and ppc64.
* optimization: LOGCOUNT is faster on arm64.
* optimization: SIGNUM can be inlined if its argument type is
known. (#1903533)
* bug fix: compiler crash in tail call handling. (#1903938)
* bug fix: crash in traceroot. (#1903419, reported by Michal Herda)
* bug fix: DESCRIBE called with a string as second argument no
longer mutates that string. (#1903901, reported by Michal Herda)
* bug fix: stack clobbering by 256-bit SIMD packs on x86-64. (#
1901685, reported by Marco Heisig)
New in version 2.0.10, 2020-10-27
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* minor incompatible change: the funarg given to
SB-SPROF:MAP-TRACES does not receive a wallclock time with each
trace.
* minor incompatible change: INTERNAL-TIME-UNITS-PER-SECOND has
been increased to 10^6 on 64-bit architectures.
* minor incompatible change: SIGPIPE is ignored by default again. (
#1897624)
* minor incompatible change: the system code compiled under the
:LINKAGE-TABLE feature is now unconditionally compiled in, and
the corresponding entry in *FEATURES* has been removed.
* enhancement: style-warnings are issued for variables which have
an assignment but no "for-value reference" (per CLHS glossary
entry)
* bug fix: SB-CLTL2:MACROEXPAND-ALL did not expand
MULTIPLE-VALUE-BIND and MULTIPLE-VALUE-SETQ
* bug fix: CPUID-based feature detection had an index/mask
confusion (#1899239)
* bug fix: fix a deadlock on Windows (#1896802)
* bug fix: eliminate type errors when wall clocks go back (#1028026
, #1032111)
* bug fix: fix EOF handling in read-char-no-hang on concatenenated
streams (#690408, reported by Willem Broekema)
* bug fix: fix MAP-INTO on extended sequences (#1855375, thanks to
James Kalenius)
* bug fix: SB-GMP can now raise -1, 0 and 1 to the power of a
bignum. (thanks to Aaron Chen)
* bug fixes in tests:
+ add a C function declaration (#1897627, thanks to Bob Felts)
+ parse vmmap output more liberally (#1897722, reported by Bob
Felts)
New in version 2.0.9, 2020-09-27
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* incompatible change: HPPA and DEC Alpha architecture support has
been removed.
* minor incompatible change: the compiler signals a warning at
compile-time when an initform of T, NIL or 0 does not match a
STANDARD-CLASS slot's declared type.
* minor incompatible change: the runtime no longer uses SIGPIPE
internally, so the signal is deliverable to user code as is
customary. Ignoring the signal - in lieu of the OS default of
process termination - is obtainable via (SB-SYS:ENABLE-INTERRUPT
SB-UNIX:SIGPIPE :IGNORE).
* platform support:
+ a number of obsolete portability layers (particularly on the
Windows platform) have been removed in favour of direct
calling of the native interfaces.
+ RUN-PROGRAM now accepts a :WINDOW argument to control whether
a subprocess window should be displayed. (Thanks to Luis
Borges de Oliveira)
+ the use of futexes implied by :SB-FUTEX is now implemented on
FreeBSD.
* bug fix: SB-SPROF can distinguish between SBCL-internal assembly
routines.
* bug fix: SB-SPROF has better output in its reports for anonymous
functions.
* optimization: CALL-NEXT-METHOD with supplied arguments in
required positions is now faster if the supplied arguments are
EQL to the original arguments.
New in version 2.0.8, 2020-08-31
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* platform support:
+ added support for NetBSD/ARM64;
+ threads on Linux now have OS-visible names;
+ removed unnecessary emulation of pthread functions on
Windows;
+ work around a sigwait() bug on Mac OS X;
+ allow safepoint build on Mac OS X, though it probably doesn't
work very well (reported by Chris Wagner, #1382811)
+ removed stub support for HPUX.
* optimization: SB-THREAD:MAKE-THREAD is faster on most platforms.
* optimization: faster RATIONAL when the result is a RATIO.
* optimization: improved cross-type comparisons (float/ratio/
bignum).
* bug fix: EQUALP on pathnames was wrong
* bug fixes: fix compiler issues in:
+ COUNT (#1889391)
+ VECTOR-LENGTH (#1888919)
+ constant-folding (#1888384)
+ FIND and POSITION (#1887316)
New in version 2.0.7, 2020-07-30
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* minor incompatible change: SB-THREAD:THREAD-OS-TID returns NIL
for a thread which has exited.
* minor incompatible change: OPEN no longer calls TRUENAME
implicitly on a string filespec prior to issuing an open() system
call.
* minor incompatible change: PATHNAME is no longer a
STRUCTURE-OBJECT.
* documentation: HASH-FUNCTION is a function designator. (#1888028,
reported by Jacek Zlydach)
* bug fix: eliminated a potential garbage-collector deadlock when
linking with TCMalloc.
* bug fix: foreign threads (those not made by
SB-THREAD:MAKE-THREAD) can not crash with a "GC_PENDING, but why?
" error when returning back from Lisp into the foreign caller.
* bug fix: sb-fasteval crashed trying to install a JIT-compiled
DEFSTRUCT accessor in a locked package.
* bug fix: removed misuse of putwc() which caused stdio streams to
drop characters.
* bug fix: the "maximum interrupt nesting depth exceeded" error
generated in the C runtime is significantly less likely to occur.
* bug fix: sb-sprof should no longer segfault from calling
pthread_kill() on a nonexistent thread.
* bug fix: a portability issue arising from various build hosts (#
1886255, reported by Pierre Neidhardt)
* bug fix: spurious compiler warnings from REDUCE with
:INITIAL-VALUE. (#1885515, reported by Michael South)
* bug fix: an inconsistency between class hierarchies and the type
system under some circumstances involving redefinition. (#1886397
, reported by Atilla Lendvai)
* bug fix: the USE-VALUE restart for OPEN on non-existent files is
more likely to function as expected. (#1886587)
* bug fix: various invalid inputs to ROTATE-BYTE no longer cause
compiler errors. (#1887164, #1888152)
* optimization: PPC64 on linux uses the __thread annotation on C
variables in preference to pthread_setspecific() and
pthread_getspecific().
New in version 2.0.6, 2020-06-29
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* planned incompatible change: the defined symbols in the
Metaobject Protocol, currently accessible from both SB-MOP and
SB-PCL packages, will in a later release be no longer exported
from SB-PCL.
* platform support:
+ better support for dynamic-extent on the SPARC architecture.
+ bug fix for loading very large core files.
+ bug fix for logior and logxor on PPC64.
* enhancement: EQUALP on structure instances uses code specialized
to each structure type, inlining comparison of non-pointer slots.
* enhancement: some standard operators, such as
WITH-OUTPUT-TO-STRING and CHANGE-CLASS, have been adapted to use
dynamic-extent temporary objects, and so cons less garbage on the
heap.
* enhancement: read tables are more space- and speed efficient
* bug fix: stream conditions with dynamic-extent streams have the
stream replaced by a stub. (reported by Matt Kaufmann)
* bug fix: garbage collections triggered from foreign callbacks
crashed. (#1884403, reported by Andrew Kent)
* bug fix: compiler failure in compiling MAKE-LIST. (#1881349)
* bug fix: using the debugger from frames with calls to functions
with unsupplied optional arguments is less likely to cause heap
corruption. (#1883745)
New in version 2.0.5, 2020-05-31
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* platform support:
+ experimental support for ARM32 and ARM64 on OpenBSD
+ better musl libc support. (#1768368, thanks to Eric Timmons)
+ more correct use of futexes on 64-bit Linux. (#1876825,
reported by Ilya Perminov)
+ restore building on current Solaris. (#1881393, thanks to
Shawn Ellis)
* enhancement: CMUCL-style START-BLOCK and END-BLOCK declarations
are now supported for block compiling forms at a sub-file
granularity.
* enhancement: IPv6 support in sb-bsd-sockets is enabled on
Windows.
* minor change: *compile-print* now makes it more clear what block
compilation is actually doing. The default output is now slightly
more verbose as a result.
* bug fix: number keys in EQUALP hash tables are correctly hashed.
(#1878653, reported by Syll)
* bug fix: EQness is better preserved given partial sharing of list
contents in the file compiler. (#1583753, reported by Denis
Budyak)
* bug fix: the peephole pass neglected to preserve jump table
labels. (#1876485)
* bug fix: fix compiler crash in block compilation merging of
toplevel lambdas. (#1865336, reported by il71)
* bug fix: sb-introspect's function-lambda-arglist is better at
extracting default values of nested macro arguments. (#1876194)
* bug fix: RESTART-BIND's body is an implicit progn, and so does
not accept declarations. (#1876303, reported by Michal Herda)
* optimization: EQUAL hash tables with keys involving
structure-objects will have fewer systematic collisions.
New in version 2.0.4, 2020-04-27
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* platform support:
+ 32-bit RISC-V is now fully supported. Unlike other ports, its
backend is entirely shared with 64-bit RISC-V.
+ native threads are now supported on RISC-V.
+ fix and add some x86-64 vector instructions. (reported by
Shubhamkar Ayare)
+ improve pointer representation on ppc64 for low-level
performance improvement.
+ threads are more stable on big-endian ppc64
* enhancement: forward-referenced type tests can now be open-coded
by using block compilation. The result is that mutually
referential defstructs are now efficiently compiled in block
compilation mode, superseding a lighter mechanism that worked in
fewer contexts. However, that lighter mechanism has been removed,
so for now, users who want to efficiently compile mutually
referential defstructs must explicitly opt-in using block
compilation.
* bug fix: defstructs with empty initforms in the sbcl source are
now explicitly intiialized with NIL, as that is undefined
behavior under ANSI. This helps cross compilation hosts which do
not implicitly initialize empty initform slots to NIL. (Thanks to
Karsten Poeck)
* bug fix: backtracing through assembly routines now works properly
on RISC-V.
* bug fix: ASH no longer gets miscompiled in certain edge cases on
RISC-V.
* bug fix: &MORE args have been slightly optimized and are more
correct on RISC-V.
* bug fix: unused local functions with &REST/&KEY/&OPTIONAL now
also issue a deletion note.
* bug fix: APPLY on a large list ("large" being in excess of 2k to
16k items depending on the platform) can no longer crash the
gencgc collector.
* bug fix: sb-concurrency FRLOCK algorithm has been corrected. (#
1087955)
* bug fix: block compilation now respects inlining declarations
better (like CMUCL).
* optimization: hashing of structures with raw slots for EQUALP
hash tables has been improved.
New in version 2.0.3, 2020-03-28
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* incompatible change: the external format now defaults to UTF-8
and is not affected by LANG. SB-EXT:*DEFAULT-EXTERNAL-FORMAT* is
now the only way to change it.
* minor incompatible change: the undocumented :EPHEMERAL argument
to MAKE-THREAD has been removed.
* minor incompatible change: DECLARE type testing of structure
types when the SAFETY optimization quality is less than SPEED
(but greater than 0) is precise, rather than merely testing that
an object is a (general) STRUCTURE-OBJECT.
* platform support
+ respect sunos platform assembler flag handling
+ riscv architecture can be detected during the build
+ enabled the sb-dynamic-core feature on riscv, sparc, and made
it unconditional everywhere
+ cheneygc is an option for arm and arm64
* enhancement: the installed sbcl executable tree can be renamed or
moved without risk of incorrectly referencing a '.core' file from
an obsolete path. (#666086)
* optimization: transform (values-list (list one-item)) to (values
one-item) as multiple items were already recognized.
New in version 2.0.2, 2020-02-29
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* new feature: CMUCL-style block compilation support has been
added, allowing whole program optimization. It has been
documented in a new section of the manual entitled "Advanced
Compiler Use and Efficiency Hints". In particular, users of block
compilation will find a large speedup for numerical code, as
functions which call or return floating point values will keep
everything unboxed.
* bug fix: in CHANGE-CLASS, handle non-standard
slot-value-using-class for :INSTANCE and :CLASS slots better.
(reported by Shinmera on #sbcl)
* bug fix: REMHASH in an EQUAL or EQUALP hash-table works correctly
on a key for which EQUAL (respectively EQUALP) is reduced to EQ.
(#1865094)
* bug fix: do not emit a warning for DEFCLASS slots with mismatched
:TYPE and :INITFORM when the class has a non-standard metaclass.
* bug fix: DISASSEMBLE on SPARC is less likely to spuriously
annotate code sequences as error traps.
New in version 2.0.1, 2020-01-26
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* minor incompatible change: some symbols have been removed from
*FEATURES* based on a determination of which should be
impermissible to examine via #+ and #- reader macros in
user-written code.
* optimization: DEFSTRUCT copiers including COPY-STRUCTURE are able
to stack-allocate the result when declared dynamic-extent.
* bug fix: loop analysis code more robust. In particular, loop
nesting depth is computed more accurately, improving the register
allocation around loops.
New in version 2.0.0, 2019-12-29
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* minor incompatible change: heap relocation now works on Windows.
Since this feature now works on all platforms, it is enabled
unconditionally and the :RELOCATABLE-HEAP symbol no longer
appears on *FEATURES* in any builds. (Thanks to Luis Borges de
Oliveira)
* enhancement: malformed type specifiers and occurrences of
deprecated types in :TYPE initargs of DEFCLASS and
DEFINE-CONDITION slot specifications are detected and result in
compile-time errors and warnings respectively.
* enhancement: parallel contrib building, controlled by
SBCL_MAKE_JOBS=-jX the same as for the C runtime.
* bug fix: add a walker template for WITH-SOURCE-FORM.
* bug fix: start the summary of a compilation unit on a fresh line.
(Thanks to Zach Beane)
* bug fix: on Windows, PARSE-NATIVE-NAMESTRING produces an absolute
directory when parsing a bare drive name and :AS-DIRECTORY is
specified. (Thanks to Luis Borges de Oliveira)
* bug fix: on RISCV, the runtime is linked with libz if the core
compression feature is requested. (Thanks to Andreas Schwab)
* bug fix: ADJOIN using an EQL test and a KEY function only
transforms into an EQ test if the key function returns values for
which EQ and EQL are guaranteed to be the same.
* optimizations:
+ the instruction sequence for multiple-value calls is more
efficient on x86-64.
+ the direction flag is now unused on x86 and x86-64 when
handling an unknown number of return values. (Thanks to
Fanael Linithien)
+ the x86-64 backend is better able to use memory operands for
arithmetic operations.
+ compilation of TYPECASE to a jump table is enabled when all
the types being tested are frozen.
+ compilation of CASE and ECASE into a jump table has been
implemented on 32- and 64-bit powerpc platforms.
+ the implementation of Unicode normalization has been sped up.
+ pretty-printing dispatch on conses is faster, particularly
with the standard pretty-print dispatch table. Deeply-nested
forms should also pretty-print faster.
New in version 1.5.9, 2019-11-26
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* platform support:
+ a message intended to be more helpful will be displayed for
an mmap failure on OpenBSD.
+ the soft-float ABI on ARM32 is better supported, in
particular in returning double floats from calls into C.
* optimizations:
+ CASE and ECASE with symbols as keys may be optimized into a
vector lookup if all result forms are quoted or
self-evaluating objects.
+ CASE and ECASE can be optimized into a jump table on the x86
[-64] backends with arbitrary result forms provided that the
clause keys are either all fixnums, all characters, or all
symbols.
+ a number of forms are converted to use CASE in circumstances
where that makes sense, including calls to POSITION, MEMQ and
MEMBER, and TYPECASE where the types are MEMBER/EQL types.
+ POSITION of a variable symbol in a constant sequence of
symbols is converted to CASE and thence to a jump table.
+ TYPECASE of a variable where the clauses are member types is
converted to CASE and thence to a jump table.
+ a number of slow instructions are no longer used on x86 and
x86-64 machines. (Thanks to Fanael Linithien)
+ the compiler is better at tracking the implications of
branches after EQ and EQL tests.
+ parsing &KEY lists is slightly less register-intensive.
+ a pattern-based peephole optimizer pass has been added,
running some simple transformations on the x86-64 backend.
* enhancements: more thorough compile-time type checking of various
initforms (defclass, &key, defstruct).
* bug fix: unions of complicated CONS types are less likely to
cause an infinite loop. (#1799719)
* bug fix: DESCRIBE on functions not named by extended function
designators no longer signals a type error. (#1850531, reported
by Michal Herda)
New in version 1.5.8, 2019-10-26
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* platform support:
+ support for Mac OS X Catalina
+ improvements in interoperability with C code compiled with
memory sanitization options
+ libsbcl.so links to zlib when sb-core-compression is enabled.
(#1845763, thanks to Juan M. Bello-Rivas)
+ workarounds for BSD issues around mmap() and
pthread_attr_setstack(). (#1845936)
+ support SSE for bzero if available on OpenBSD
* optimizations:
+ improved type understanding and translations for division
operators (including TRUNCATE, GCD, LCM).
+ sequential comparisons and branches can elide intermediate
comparisons. (#1847284)
+ convert EQUAL and EQUALP to EQL if either of the arguments is
a type for which the structural equality predicate is
identical to the simpler equality check. (#1848583)
+ internal operators implementing string comparisons produce
simpler-to-consume values. (#1848776)
* bug fix: inspecting adjustable arrays and vectors with fill
pointers works better. (#1846191, reported by Yves Pagani)
New in version 1.5.7, 2019-09-28
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* platform support:
+ many bug fixes to the experimental 64-bit PowerPC/Linux port,
to the extent that the little-endian variant passes all
applicable tests in the regression test suite; the big-endian
variant currently has some failures
+ experimental support for sb-threads on 64-bit PowerPC/Linux
+ support threads on x86-64 Sun OS (#1841280)
+ handle PAX restrictions on mprotect() on NetBSD
+ experimental support for HaikuOS
+ the runtime is built as a position-independent executable by
default on x86-64 Linux and x86-64 Darwin
* fixes and enhancements related to Unicode:
+ update of the data files to Unicode 8.0
+ fix a bug in the implementation of the Unicode line breaking
algorithm regarding hebrew letters and hyphens
* enhancement: add a restart to OPEN with :IF-EXISTS :ERROR to
allow re-opening with :APPEND. (#806398, reported by Tobias
Rittweiler)
* bug fix: compiler optimizations on SEARCH with :FROM-END T didn't
account for the empty sequence. (#1844821)
* bug fix: handle SETF of nested empty VALUES correctly. (#1806478)
* optimization: FLOOR and CEILING on rationals are simpler, and the
compiler's understanding of them is better.
New in version 1.5.6, 2019-08-26
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* platform support:
+ experimental support for 64-bit PowerPC running Linux
(extending Brian Bokser's work from 2018), on both the v1 and
v2 ABIs
* new feature: SB-EXT:SEARCH-ROOTS discovers paths from live
objects to the roots keeping them alive.
* enhancement: string output streams created with :ELEMENT-TYPE
'BASE-CHAR use internal buffers of BASE-STRING instead of UCS-4
strings restricted to the ASCII range, yielding a theoretical 4:1
space reduction.
* optimization: improved make-array type derivation for
multi-dimensional arrays. (#1838442)
* bug fix: compliant redefinition of classes whose previous
definition caused argument mismatch errors does not generate
errors any more. (#1840595, reported by 3b on #sbcl)
* bug fixes for issues caught by the random tester:
+ never derive the type of TRUNCATE on arbitrary numbers as the
empty type. (#1838267)
+ provide out-of-line definitions for internal machinery
related to FLOAT-SIGN. (#1838337)
+ include COMPLEX in the derived type of SIGNUM when
appropriate. (#1838333)
+ more correct internal type testing for function types. (#
1838808, #1838888, #1838986)
+ don't assume that all objects of type (NOT SIMPLE-ARRAY) have
an array header. (#1838827)
+ recognize that PHASE on non-positive numbers can return 0 as
well as PI. (#1838892)
New in version 1.5.5, 2019-07-28
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* platform support:
+ SunOS: bug reports and patches from Richard Lowe in sb-posix
tests (#1837495), sb-concurrency tests (#1837817),
unencapsulated tracing (#1837307), float registers in
interrupt contexts (#1837168)
* bug fix: do not generate version.lisp-expr from git describe if
the git repository is not sbcl's own. (#1836663, thanks to
Richard Lowe)
* bug fix: compiler crash related to VALUES-LIST on a &REST
argument in some contexts. (#1836096, reported by Samuel Jimenez)
* bug fix: compiler hang related to constraint propagation. (#
1835599, reported by Mark Cox)
* bug fix: the inspector showed the wrong array element type. (#
1835934, reported by Richard M Kreuter)
* optimization: numerous improvements to hash table access and
rehashing
* optimization: ASSERT compiles into substantially more compact
code. (#1835221)
New in version 1.5.4, 2019-06-29
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* minor incompatible change: hash tables on 64-bit machines consume
roughly 20% less memory but can only grow to hold 2^31 entries
(theoretically) due to use of 31-bit indices internally.
* platform support:
+ RISC-V: improve rotate-byte support (thanks to Philipp
Matthias Schaefer)
* bug fix: the system reasons more correctly regarding the array
rank of complicated array types. (reported by Bart Botta)
* bug fix: DOUBLE-FLOAT-P never gets weaked to NUMBERP. (reported
by Bart Botta)
* enhancement: the regression test suite can now benefit from
paralellism, completing much faster when enough compute power is
available.
* optimization: readtables with non-base-char dispatch characters
are less inefficient.
* optimization: INTERN performs fewer redundant type checks.
* optimization: tests for PATHNAMEP and STRUCTURE-OBJECT (including
in computing hash functions) are faster.
New in version 1.5.3, 2019-05-27
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* platform support:
+ RISC-V: numerous bug fixes and improvements
+ all platforms: better run-program performance when used from
multiple threads.
* enhancement: (declaim (optimize (debug 2))) ensures compilation
of top-level forms, providing better debugging for simple forms
that are otherwise "byte-code interpreted" when compiled into
FASLs.
* bug fix: use of finalizers could in rare circumstances cause a
crash in the garbage collector.
* bug fix: show extended function designators, e.g. (setf foo), in
the disassembler
* optimization: reduced overhead of calling NTH/NTHCDR.
* optimization: improved FLOAT-SIGN on DOUBLE-FLOATs on 64-bit
platforms
New in version 1.5.2, 2019-04-29
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* enhancement: RISC-V support with the generational garbage
collector.
* enhancement: command-line option "--tls-limit" can be used to
alter the maximum number of thread-local symbols from its default
of 4096.
* enhancement: better muffling of redefinition and lambda-list
warnings
* platform support:
+ OS X: use Grand Central Dispatch semaphores, rather than Mach
semaphores
+ Windows: remove non-functional definition of
make-listener-thread
* new feature: decimal reader syntax for rationals, using the R
exponent marker and/or *READ-DEFAULT-FLOAT-FORMAT* of RATIONAL.
* optimization: various Unicode tables have been packed more
efficiently
New in version 1.5.1, 2019-03-31
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* enhancement: restarts for missing package errors.
* optimization: FIND-PACKAGE should be faster even when run in the
context of a package with local package-nicknames.
* optimization: fix TRUNCATE deftransform's results to have
well-defined signs
* bug fix: thread-safety problems in RUN-PROGRAM with :PTY.
* bug fix: SLEEP transform could never fire.
* build enhancement: defend against quirky host floating point
implementation
* test enhancement: allow more parallelism in running the
regression test suite
New in version 1.5.0, 2019-02-24
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* enhancement: SB-COVER emulates IN-PACKAGE when recording source
maps; this makes it possible to generate coverage for forms that
uses local package nicknames, or otherwise must be read in the
correct package.
* build enhancement: new host quirks mechanism, support for
building under ABCL and ECL (as well as CCL, CMUCL, CLISP and
SBCL itself)
* optimization: (FIND-SYMBOL x "P") for constant "P" executes
faster, subject to "P" not being a package-local nickname of any
package. Similarly INTERN. (#1814924)
* optimization: bounds checks are elided when possible where the
same array is dereferenced multiple times.
* bug fix: initargs are now deduplicated when computing effective
slots.
* bug fix: TREE-EQUAL with :TEST 'EQL now correctly computes its
answer. (reported by Bahodir Mansurov)
* bug fix: compiled (COERCE x 'FLOAT) no longer coerces
double-floats into single-floats. (reported by J. Gareth
Williams)
New in version 1.4.16, 2019-01-26
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* minor incompatible change: ENSURE-DIRECTORIES-EXIST no longer
establishes a CONTINUE restart in case of an error.
* minor incompatible change: Defining macros (DEFVAR, etc) which
require a symbol as the name will fail to macroexpand if given a
non-symbol.
* enhancement: the unexported restart names SB-
{ALIEN,FASL,IMPL,PCL}::RETRY have been replaced by SB-EXT:RETRY.
New in version 1.4.15, 2018-12-04
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* enhancement: added AVX2 instructions on x86-64, which can be used
with SB-SIMD-PACK.
* enhancement: specializer name parsing is less lenient and signals
a specific condition in case of syntax errors. (#1808681)
* enhancement: provide interactive restarts for some file-system
errors.
* enhancement: COMPILE no longer acquires the world lock. (fixes
most occurrences of #308959)
* bug fix: RUN-PROGRAM is more responsive and less likely to
deadlock (#1702178, #1808641)
* bug fix: traceroot can search for simple-fun targets (#1808659,
reported by Michal Herda)
* compiler bug fixes:
+ related to code generation: #1805899, #1806982, #1807455
+ related to interpreting and constant-folding: #1806513
+ related to the type system: #1804759, #1804796
+ related to eq-testing of structure slots: #1809582, #1808273
+ related to dynamic-extent: #1809565, #1809253, #1809485, #
1739652
+ related to GC safety: #308949
New in version 1.4.14, 2018-11-26
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* enhancement: attempting to build on openbsd 6.0 or newer without
the wxallowed mount option now results in a more useful error
message.
* enhancement: by popular demand, SB-EXT now exports two functions
HEAP-ALLOCATED-P and STACK-ALLOCATED-P to assist in writing debug
assertions that objects in hash-tables are not stack-allocated,
etc.
* bug fix: restored sb-thread support on OpenBSD.
New in version 1.4.13, 2018-10-24
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* minor incompatible change: PRINT-TYPE and PRINT-TYPE-SPECIFIER
are not exported from SB-EXT. These were never announced, so this
change would only affects users who discovered these undocumented
functions.
* enhancement: SB-EXT:SEARCH-ROOTS and SB-EXT:GC-AND-SEARCH-ROOTS
are supported on all backends that use gencgc.
New in version 1.4.12, 2018-09-28
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* minor incompatible change: a number of platform-specific elements
of *FEATURES* related to whether the system implements particular
strategies have been removed.
* minor incompatible change: some changes to the (internal)
implementation details of the x86 and x86-64 have necessitated
changes to some low-level libraries.
* enhancement: attempting to transfer control through GO or
RETURN-FROM to frames which no longer exist are now caught and
handled by the debugger.
* enhancement: identical code (at the machine instruction level)
can now be shared between functions, if explicitly requested.
* enhancement: SB-EXT:STRING-TO-OCTETS and SB-EXT:OCTETS-TO-STRING
are now documented.
* bug fixes: fix a number of bugs revealed by random testing (#
1793171, #1793150, #1791550, #1792030, #1791059, #1790157, #
1790717, #1790703)
New in version 1.4.11, 2018-08-28
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* minor incompatible change: changes to the (internal) assembler on
x86 and x86-64 may cause problems to some low-level third-party
libraries:
+ new macro EA for defining an effective address, without size
information;
+ an explicit size modifier is now needed for MOVSX and MOVSZ
instructions;
+ MOVD and MOVQ move a single size of operand by definition.
* enhancement: support the latest MinGW (#1786731, reported by
il71)
* enhancement: checks for modifications of constants can now be
done in local (FLET/LABELS) functions.
* optimization: improved type checking routines for various
compound types.
* optimization: array bound checks are elided on vectors when the
index is known to be less than the length, including LOOP ACROSS.
* optimization: the register allocator's use of temporaries is
somewhat improved.
* optimization: checking widetags involves fewer conditional jumps
on x86 and x86-64.
* bug fix: fix a number of bugs related to constant improper lists
as sequence arguments (#1768563, #1768568, #1768652)
New in version 1.4.10, 2018-07-26
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* enhancement: added SB-EXT:MAKE-WEAK-VECTOR.
* enhancement: constant-modification detection warnings can be
generated in the presence of conditional constructs.
* optimization: better bounds-checking on x86[-64] and ARM64.
* optimization: adding 1 to or subtracting 1 from a fixnum variable
does not cons.
* bug fixes: fix a number of bugs revealed by random testing (#
1782826, #1779878, #1779737)
New in version 1.4.9, 2018-06-28
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* enhancement: SB-COVER instrumentation for x86[-64] has
signficantly less overhead. The performance penalty for 64-bit
code has been measured at around 30% slower than uninstrumented
code as contrasted with slowdowns in excess of 100% previously.
* enhancement: tracing a generic function with the :METHODS T
option produces output corresponding to each method called under
the default :ENCAPSULATE NIL tracing implementation.
* bug fix: updated TRACE documentation. (#574614 was actually
already fixed, but there were other issues.)
* bug fix: fixed x86 GC bug causing heap corruption. (#1749369)
* bug fix: improved compatibility with macOS High Sierra and
graphical applications.
New in version 1.4.8, 2018-05-28
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* bug fix: redefinition of method combinations now does the
expected thing; generic functions using that method combination
have their effective methods lazily recomputed according to the
new definition of the method combination. (Reported by Didier
Verna at ELS 2018)
* bug fix: :arguments argument to the long form of
DEFINE-METHOD-COMBINATION is now implemented more correctly,
supporting suppliedp variables and &optional defaults. (Reported
by Bruno Haible, #309084)
New in version 1.4.7, 2018-04-29
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* enhancement: better handling of unknown keyword arguments (#
1750466)
* enhancement: namestrings can now be computed for certain
pathnames that previously did not have namestrings because of #\.
characters in their name and/or type components.
* bug fix: compiling a SLEEP call with a float positive infinity
argument no longer causes an internal error (#1754081)
* bug fix: keyword arguments provided to a generic function with
EQL-specialized methods are checked more correctly (reported by
Syll, #1760987)
New in version 1.4.6, 2018-03-30
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* enhancement: DISASSEMBLE on a symbol naming a macro will
disassemble the expander, not the code that traps attempted
FUNCALL of the macro.
* enhancement: The sb-sprof contrib now provides an experimental
interface for accessing collected profiler data.
* enhancement: The instruction-level profiling of the sb-prof
contrib annotates the disassembler output more efficiently.
* optimization: improved dynamic-extent handling of nested
variables.
New in version 1.4.5, 2018-02-28
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* minor incompatible change: building with/without the
:sb-package-locks feature is no longer an option. Package locks
are always compiled in, and removing :sb-package-locks from
*features* will have no effect.
* enhancement: FIND-PACKAGE does not acquire a mutex
* enhancement: cheneygc can perform heap relocation on startup
* enhancement: in threaded builds, finalizers execute in a
system-internal thread so that a user thread which invokes GC is
unblocked from performing work as soon it returns from GC and
invokes any post-GC hooks. As such, it is more important than
before to avoid assumptions about special variable bindings in
finalizers, even in single-threaded code.
* optimization: faster (funcall (or function symbol)) on x86-64.
New in version 1.4.4, 2018-01-30
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* bug fix: pathname accessors such as PATHNAME-DIRECTORY work on
SYNONYM-STREAMs.
* bug fix: (pathname-{device,directory,name,type} ... :case
:common) works as expected. In particular MAKE-PATHNAME composed
with the accessors roundtrips properly when both use the same
:case. (#1739906)
* bug fix: DIRECTORY no longer gets confused when the value of
*DEFAULT-PATHNAME-DEFAULTS* has a name or type component. (#
1740563)
* bug fix: pattern pieces in pathname components are correctly
escaped during unparsing.
* bug fix: DELETE-DIRECTORY no longer signals an error when the
directory is supplied as a pathname with name and/or type
components containing escaped characters. (#1740624)
* bug fix: weak hash-tables no longer cause GC time to scale
superlinearly (#1241771)
* bug fix: CANCEL-FINALIZATION operates in approximately constant
time per operation (#1587983)
* bug fix: big-endian MIPS systems now (mostly) work again (broken
since 1.3.14.x).
* bug fix: backtrace from arg-count errors on systems other than
x86, x86-64, ARM, and ARM64 now works again.
* bug fix: backtrace from asynchronous interrupts on non-x86,
non-x86-64 systems should now be more reliable.
* enhancement: warnings and errors referring to bindings
established by LET, LET*, FLET and LABELS point to the offending
form more accurately.
* enhancement: backtrace for invalid argument count produces the
exact supplied arguments including the extra ones on all
platforms (no longer just x86, x86-64, ARM, and ARM64).
New in version 1.4.3, 2017-12-29
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* enhancement: SLEEP respects deadlines established by
SB-SYS:WITH-DEADLINE.
* bug fix: DECODE-TIMEOUT and operators accepting a timeout no
longer signal an error when called with an argument that is of
type (real 0) but not (unsigned-byte 62) (#1727789)
* bug fix: fixed heap exhaustion bug when consing millions of small
objects
* bug fix: sb-safepoint builds are now a lot less prone to
deadlocks and odd crashes (#1424031, #1268710)
* bug fix: argumentless CALL-NEXT-METHOD where specialized-to-T or
unspecialized parameters are mutated now uses the original
(non-mutated) parameter values (#1734771)
* bug fix: memory faults from lisp no longer use
(thread-and-interrupt unsafe) global storage for fault addresses
(everywhere), and now have cleaner backtraces (on x86 and
x86-64). (#309068)
* bug fix: pathnames with a directory component of the form
(:absolute {:up,:wild,:wild-inferiors}) no longer fail to
unparse. (#1738775)
* bug fix: more reliable signal handling on macOS.
New in version 1.4.2, 2017-11-30
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* minor incompatible change: SB-EXT:QUIT is no longer marked as
deprecated and behaves like SB-EXT:EXIT.
* enhancement: ASDF updated to 3.3.1. The ASDF release is dedicated
to the late Elias Pipping who put enormous amounts of work into
it despite his terminal illness. Thank you and rest in peace. (#
1681201)
* enhancement: alien routines compiled with '-fsanitize=thread' and
/or '-fsanitize=memory' cause fewer false positives in error
reporting.
* optimization: fewer instances of consing float constants at
runtime.
* bug fix: a number of compiler bugs detected by Paul F. Dietz'
randomized tester. (#1731503, #1730699, #1723993, #1730434, #
1661911, #1729639, #1729471, #1728692)
* bug fix: better errors from NAMESTRING and friends on pathnames
with no namestrings. (#792154)
* bug fix: EQUAL and EQUALP compiler transforms were too confident
in deriving a result. (#1732277, #1732225)
* bug fix: FILL sometimes returned the underlying data vector
rather than the given array. (#1732553)
* bug fix: SEARCH returned the wrong answer in some cases. (#
1732952)
* bug fix: the type (COMPLEX INTEGER) behaves more as specified by
Function TYPEP, which has stronger constraints than System Class
COMPLEX. (Reported by Eric Marsden, #1733400)
New in version 1.4.1, 2017-10-30
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* optimization: faster foreign callbacks.
* enhancement: complex arrays can be stack allocated.
* enhancement: PROCESS-KILL now exists on win32 and PROCESS-PID
actually returns the PID.
* optimization: the register allocation method used by the compiler
when optimizing for speed is now faster for functions with large
bodies.
* bug fix: SB-INTROSPECT:ALLOCATION-INFORMATION works on big-endian
CPUs (fixes #490490 for real rather than by disabling a test)
* bug fix: code objects and bignums of large enough size to be
placed on GC pages without any other object no longer cause
accidental copying during garbage collection. (gencgc only)
* bug fix: sb-fasteval failure with 0-argument lambdas (#1722715)
* bug fix: RUN-PROGRAM doesn't leak handles on win32 and
PROCESS-CLOSE doesn't crash. (#1724472)
New in version 1.4.0, 2017-09-30
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* minor incompatible change: DESTRUCTURING-BIND treats non-toplevel
() as nested empty pattern. This seems to be what the standard
mandates, so conforming code should not be affected.
* ehancement: (GC :GEN 7) with gencgc will zero-fill dead
pseudo-static objects so that they do not spuriously cause
reachability of objects that would have been otherwise dead.
* enhancement: PROCESS-STATUS now tracks stopped and continued
processes properly (also fixes #1624941, based on patch by Elias
Pipping).
* bug fix: INSPECT handles errors signaled while printing slot
values. (#454682)
* bug fix: DESCRIBE works on classes like it used to.
* bug fix: *LOAD-PATHNAME* and *LOAD-TRUENAME* are bound to
pathnames when processing a sysinit or userinit file
* bug fix: save-lisp-and-die is able to collect more garbage on
non-x86oid gencgc targets.
* bug fix: fixed out-of-bounds array read in optimized POSITION on
bit-vectors
* bug fix: signal emulation respects the 128-byte stack red zone on
x86-64 macOS.
New in version 1.3.21, 2017-08-31
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* minor incompatible change: the CLOBBER-IT restart for defstruct
redefintion has been removed after a 15 year deprecation cycle.
Use the new name, RECKLESSLY-CONTINUE. Note also that this
restart is hidden if deemed unsafe due to altered placement of
untagged slots in the structure.
* enhancement: the assignment of -DSBCL_PREFIX= in src/runtime/
GNUmakefile can be removed as a local patch, which results in an
sbcl executable that finds its core file relative to itself by
looking in "../lib/sbcl".
* enhancement: backends using the generational GC are able to
relocate dynamic space anywhere the operating system places it.
This feature can be disabled by removing :relocatable-heap from
the build configuration. Not supported on Windows.
* enhancement: DEFMETHOD no longer signals
IMPLICIT-GENERIC-FUNCTION-WARNING.
* enhancement: better type conflict detection for high order
functions, e.g. (find x "123" :test #'=)
* enhancement: the tabular output of ROOM is aligned dynamically,
preventing misaligned tables for larger sizes or counts.
* enhancement: ROOM reports on immobile space if applicable.
* optimization: optimized external-format routines.
* bug fix: SB-INTROSPECT:ALLOCATION-INFORMATION returns :IMMOBILE
instead of :FOREIGN for objects in immobile space.
* bug fix: dotted lists in special forms and function call forms
signal an appropriate error
* bug fix: EQUALP hash tables with pathname keys now ignore
internal slots. (#1712944, reported by Jason Miller)
New in version 1.3.20, 2017-07-31
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* minor incompatible change: DEF{GENERIC,METHOD} no longer accept
some illegal lambda lists such as (defgeneric bar (foo &key foo))
or (defgeneric baz (t)) that were accepted before.
* optimization: a valueless &AUX binding in a BOA constructor does
not force all slots reads in safe code to perform a full type
check.
* optimization: ATOMIC-PUSH and ATOMIC-POP generate better code
* bug fix: the low-level debugger would erroneously print - or not
print as the case may be - "(bad-address)" for some objects
depending whether the --dynamic-space-size argument was used at
Lisp startup
* bug fix: a DEFCONSTANT with a non non-eql-comparable object as
the value could cause miscompilation if that constant appeared as
the default expression for an &OPTIONAL binding
* bug fix: generic function lambda lists are now checked for
repeated and otherwise illegal entries. (#1704114)
* bug fix: setting gencgc_verbose = 1 could cause deadlock in
fprintf() depending on the platform's stdio implementation. The
relevant code has been changed to use snprintf() and write()
instead.
New in version 1.3.19, 2017-06-28
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* enhancement: specialized arrays can be printed readably without
using *read-eval*
* enhancement: SB-DEBUG:PRINT-BACKTRACE truncates huge string
arguments. The full string remains available for inspection via
(SB-DEBUG:ARG).
* bug fix: backtracing from several threads at once could fail
* bug fix: floating-point infinities could not be used as keys in
EQUALP hash tables. (#1696274)
* bug fix: random sb-fasteval failures. (#1642708)
* bug fix: align the stack in callback wrappers to defend against C
compiler over-aggressive use of SIMD. (#1697528)
* bug fix: don't try to find the class when reporting that a class
does not exist for a primitive type. (#1697226)
New in version 1.3.18, 2017-05-30
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* minor incompatible change: existing values of CFLAGS, ASFLAGS,
CPPFLAGS, and LINKFLAGS will be incorporated into C compiler
invocations when building from source.
* minor incompatible change: the result of WRITE-TO-STRING may be a
BASE-STRING if all characters written are of type BASE-CHAR.
* minor incompatible change: the broadcast stream with no output
streams is a singleton object. That object satisfies
OPEN-STREAM-P regardless of how many times CLOSE is invoked on
it.
* enhancement: x86[-64] backends contain an experimental feature
which aids in demonstrating reachability of any object starting
from a tenured object or a thread stack by producing a proof as a
sequence of pointers to follow. The file "tests/
traceroot.test.sh" contains an example usage.
* enhancement: if the alien symbol "gc_coalesce_string_literals" is
set to 1 prior to SAVE-LISP-AND-DIE, then similar string
constants loaded from different fasl files may be collapsed to
one object. If the variable is set to 2, then additionally
strings which are STRING= in code resulting from COMPILE can be
coalesced. For instance, two functions returning the literal
string "HI" might return EQ strings after collapsing, which may
be undesired in a particular use. The flag pertains to gencgc
only.
* enhancement: SXHASH values on pathnames are better distributed
* bug fix: MAKE-PATHNAME removes empty strings as components of a
directory, as is permitted: "Whenever a pathname is constructed
the components may be canonicalized if appropriate."
* optimization: various printer and FORMAT performance
enhancements.
* bug fix: GET-FOREGROUND no longer fails in case all other
interactive threads exit (#1682671, reported by Syll)
* bug fix: RELEASE-FOREGROUND always removes the current thread
from the list of interactive threads. (#1682867, reported by
Syll)
New in version 1.3.17, 2017-04-28
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* enhancement: memory overhead from the garbage collector's
metadata is reduced on 64-bit architectures; no change for
32-bit.
* enhancement: further garbage collector speedups affecting pinned
objects on conservative backends, and simple-vectors.
* enhancement: on Linux a custom handler for SIGSEGV can be called
for page faults outside of dynamic space by changing the C symbol
"sbcl_fallback_sigsegv_handler".
* bug fix: sb-cover does not lose source positions for AND/OR/COND.
* bug fix: random disassembler failures. (#1527931)
* The bundled sb-md5 contrib has been updated to release 2.0.4
which is licensed under Creative Commons CC0 per author's
statement https://github.com/pmai/md5/commit/
fd134e71b71a10ab78905833a7cb9d4d6817c589 (Refer to NEWS and
COPYING in the contrib/sb-md5 subdirectory)
New in version 1.3.16, 2017-03-27
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* optimization: various small tweaks give around 5% faster garbage
collection
* bug fix: better detection of when an impossible code path does
not need a warning. (#1668619)
* bug fix: stronger attempts to disable position-independent
executable building. (#1668986, patch from Mark Wright)
* bug fix: OPEN :IF-EXISTS NIL signalled a condition on Windows. (#
1674437, reported by Jan Idzikowski)
New in version 1.3.15, 2017-02-28
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* minor incompatible change: the reader will when feasible create
new symbols using a BASE-STRING for the print name. Additionally,
string literals can favor the base-string type if desired, though
the default is to always return UTF-32 strings for compatibility.
A preference for base-string does not disable reading Unicode.
The choice is controlled via (SETF
READTABLE-BASE-CHAR-PREFERENCE). If Unicode was disabled at build
time, this setting does nothing.
* enhancement: SBCL generates more debug information by default.
* enhancement: type errors provide context information, such as
which variable is being bound, which slot of which structure is
being set.
* enhancement: if #+immobile-symbols is in build-time *FEATURES*
(not enabled by default), then symbols will never be moved in
memory except by SAVE-LISP-AND-DIE. Immobility has helpful
implications for code generation as well as interaction with
foreign routines. This feature can only be enabled if #
+immobile-space is enabled.
* enhancement: undefined function errors can be restarted on
x86-64, to either retry calling the function again or call a user
supplied function.
* enhancement: sb-ext:restrict-compiler-policy accepts an upper
bound in addition to a lower bound.
* enhancement: #+immobile-code improves the speed of function
calling. Some delay may be noticed when redefining an existing
function from a saved core file however.
* defaults change: sb-ext:*disassemble-annotate* default to NIL,
due to its poor reliability.
* new feature: SB-LINKABLE-RUNTIME, allowing linking with extra
object files to help with delivery of executables. (Thanks to
Francois-Rene Rideau)
* bug fix: data race in GENTEMP fixed - it can no longer return the
same interned symbol to multiple threads if called concurrently
* bug fix: interrupting LOADing of FASLs does not leave functions
without source locations. (#540276)
* bug fix: DYNAMIC-EXTENT-declared results of NOTINLINE local
functions were treated as if they were actually stack allocated (
#1659964)
* bug fix: correctly handle the case of a non-local exit within a
function terminating the extent of dynamic-extent, dynamic-bound
variables in the presence of multiple-values (#1655011)
* bug fix: handling of SB-SYS:WITH-PINNED-OBJECTS in the
interpreters (both sb-eval and sb-fasteval) now actually pins
objects on gencgc.
* bug fix: AVX registers are preserved during exceptions on x86-64
macOS.
* bug fix: (directory "SOMETHING/*/**/MORE") is no longer
equivalent to (directory "SOMETHING/**/MORE")
* bug fix: better console IO on Windows (#1660906)
New in version 1.3.14, 2017-01-22
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* minor incompatible change: the SB-PCL walker no longer recognizes
macros expanding into a DECLARE expression. This is not a
language change, since ANSI forbids such usage (X3J13 issue
DECLARE-MACROS:FLUSH).
* enhancement: for several macros such as MULTIPLE-VALUE-
{BIND,SETQ}, COND, DO{,*,LIST}, {RESTART,HANDLER}-{BIND,CASE},
*CASE, conditions signaled during macroexpansion point to the
form that caused the problem more accurately.
* enhancement: the "--noinform" command-line option inhibits output
from save-lisp-and-die in addition to removing the startup
banner.
* bug fix: PROCESS-KILL failed to return errno if the system call
failed
* optimization: slightly more comprehensive treatment of the
keyword arguments to MAKE-ARRAY in compiler transformations.
New in version 1.3.13, 2016-12-31
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* enhancement: SET triggers package locks on undefined variables. (
#1645152)
* enhancement: new Windows specific option to run-program,
:escape-arguments (#1503496)
* enhancement: recompiling a MAKE-INSTANCE form with an initarg
:INITARG CONSTANT where CONSTANT names a constant variable picks
up the new value of CONSTANT in case it has been redefined. (#
1644944)
* optimization: faster TYPEP on undefined at compile-time types and
upcoming class definitions. (#1082967)
* optimization: memory consumption of each STANDARD-OBJECT instance
is reduced by 2 words if the compact-instance-header feature is
enabled.
* optimization: CONDITION instances are quicker to allocate.
* optimization: unoptimized calls to FILL on specialized vectors
are now just as fast as T vectors.
* bug fix: get-timezone returns corret DST on 64-bit Windows. (#
1641058)
* bug fix: cross reference information in fasls is no longer
incompatible between different cores (#1648186)
New in version 1.3.12, 2016-11-29
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* enhancement: on x86-64, compiled functions loaded from fasl files
can not be moved, but can be freed, by GC. Additionally, COMPILE
will produce immobile code if SB-C::*COMPILE-TO-MEMORY-SPACE* is
set to :IMMOBILE. (Caution: the flag is experimental and subject
to change.) The benefits are better physical separation of code
from data, and potentially easier examination of live images by
external tools.
* enhancement: the docstring for SAVE-LISP-AND-DIE has been amended
to say that the :ROOT-STRUCTURES parameter is not meaningless on
gencgc, depending on the platform.
* bug fix: calling a named function (e.g. a DEFUN) concurrently
with redefining that same function could lead to execution of
random bytes.
* bug fix: yes-or-no-p accepts formatter functions (#1639490)
* bug fix: better handling of exceptions on macOS.
New in version 1.3.11, 2016-10-30
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* minor incompatible change: SB-EXT:*INTEXP-MAXIMUM-EXPONENT* is
removed.
* enhancement: TRACE ... :REPORT {TRACE,NIL} now work as advertised
in the documentation string (based on patch by Patrick Stein)
* enhancement: support unboxed signed-word structure slots on x86,
x86-64 and ARM64. (#377616)
* optimization: faster logical bit-array operations on
multidimensional arrays.
* optimization: better GC performance in the presence of many
threads. (patch by Ilya Perminov, #1339924)
* optimization: multiple-value-call is optimized with multiple
argument forms, not just one. (#753803)
* bug fix: MAKE-ALIEN-STRING returns the number of allocated bytes
as a second value as advertised (reported by Johann 'Myrkraverk'
Oskarsson)
* bug fix: when TO-READTABLE is supplied to COPY-READTABLE, it will
contain only the macros in FROM-READTABLE and no others. (#
1631506)
* enhancement: gencgc has been modified for x86-64 on Linux and
macOS to a support mark-and-sweep as well as the traditional
copying strategy. It is conceivable that some applications might
be adversely affected. Please see ':immobile-space' in
'base-target-features.lisp-expr' for further details, and
possible reasons to disable this feature.
* enhancement: x86-64 supports shrinking the fixed overhead in a
structure from 2 words to 1 word, reducing memory consumption in
applications which create many small structures.
New in version 1.3.10, 2016-09-30
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* enhancement: more compact low-level error signaling code
* enhancement: more compact encoding of cross-reference information
* optimization: faster out of line fixnum-float comparisons.
* optimization: filling a known simple-vector with a constant value
is about as fast in unoptimized code as in code compiled with
(SPEED 3), and the x86-64 implementation is able to use SSE
instructions.
* bug fix: correctly handle the case of a non-local exit within a
function terminating the extent of dynamic-extent functions and
variables in the presence of multiple-values (#1563127)
* bug fix: restore builds on the latest OSX with the latest Xcode (
#1470996)
New in version 1.3.9, 2016-08-30
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* minor incompatible change: NAMESTRING prefers to return a
BASE-STRING instead of (ARRAY CHARACTER (*)) when possible.
* enhancement: cached make-instance/allocate-instance constructors
can now get garbage collected.
* optimization: better performance for some unoptimized operations
on complex numbers.
* bug fix: using the options :LOCAL-NICKNAMES and :LOCK in the same
DEFPACKAGE form no longer signals a bogus error
New in version 1.3.8, 2016-07-31
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* minor incompatible change: the system now understands that the
CONDITION type is disjoint with many other system types.
* minor incompatible change: argument types in condition report
functions are now declared (in combination with the above change,
this can result in early detection of erroneous code).
* enhancement: simple arrays of any rank can be stack-allocated on
platforms supporting stack allocation of vectors.
* optimization: improved type derivation for FIND, POSITION, COUNT,
SEARCH, MISMATCH and other array and sequence functions.
* optimization: ALLOCATE-INSTANCE is now as fast as MAKE-INSTANCE.
* optimization: more efficient CHANGE-CLASS.
* bug fix: versions of getresuid() and getresgid() in SB-POSIX no
longer cause memory faults, and should work properly (#1603806,
reported by Kieran Grant)
* bug fix: handle ENOENT from getprotobyname() (#1596043, reported
by Stephen Hassard)
New in version 1.3.7, 2016-06-30
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* bug fix: preserve the name of the destructive function for the
destroyed constant and important result warnings, even when
declared NOTINLINE.
* optimization: faster operations on list-sets.
* optimization: better type derivation of set functions. (#1592152)
* optimization: load-time TLS-INDEX assignment, and other
microoptimizations, on x86.
* optimizations in:
+ APPEND;
+ ECASE/ETYPECASE;
+ ARRAY-DIMENSIONS;
+ ARRAY-TOTAL-SIZE;
+ REMOVE, REMOVE-DUPLICATES, DELETE and DELETE-DUPLICATES on
lists.
New in version 1.3.6, 2016-05-28
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* bug fix: do not insert conditional newlines in
print-unreadable-object (#1398290). This reverses a change made
in #488979 which reversed a fix advertised in release 0.8.14 to
pass the GCL ANSI Test Suite.
* bug fix: constant negative rotations of 32-bit quantities are
compiled correctly on x86-64 and arm. (#1586614, reported by
Guillaume Le Vaillant)
New in version 1.3.5, 2016-04-28
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* enhancement: the platform's strtod() is exposed as
SB-POSIX:STRTOD
* enhancement: speed up debug info creation for highly nested
functions. (#1563355)
* enhancement: the interleaved structure slot optimization from
release 1.2.6 has been ported to all architectures.
* enhancement: support run-program I/O redirection into lisp
streams on Windows.
* bug fix: better wording in missed optimization note. (#1003265)
* bug fix: interpreted (CAS SVREF) was broken
* bug fix: support CLISP as build host for ARM (#1568256, thanks to
Tomas Hlavaty)
New in version 1.3.4, 2016-03-31
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* enhancement: who-sets and who-references work on DEFGLOBAL. (#
1552997)
* enhancement: CONSTANTP understands backquote. e.g. (CONSTANTP '
`(0 (,CHAR-CODE-LIMIT))) => T
* optimization: improvements to sequence functions: CONCATENATE,
SUBSTITUTE, REVERSE.
* bug fix: SB-EVAL does not signal an error for (THE KEYWORD :FOO)
* bug fix: a DEFTYPE name that is redefined into a DEFSTRUCT name
is less likely to cause confusion in the compiler.
* bug fix: DOCUMENTATION works as intended for classes with
non-standard metaclasses
* bug fix: (TYPEP ) no
longer returns NIL in certain situations
* bug fix: MAKE-SEQUENCE, MAP, CONCATENATE and MERGE accept class
objects as result-type
* bug fix: MAKE-SEQUENCE, MAP, CONCATENATE and MERGE expand
DEFTYPEs in result-type
New in version 1.3.3, 2016-02-29
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* enhancement: warn about argument mismatch for functions passed as
arguments to other functions (e.g. REDUCE, MAP) at compile-time.
* optimization: functions accepting other functions (e.g. REDUCE,
FIND) can now be constant-folded if all function arguments are
declared as foldable.
* optimization: improved logical operations on integers of unknown
type.
* bug fix: exception handling no longer leaks memory on OS X. (#
326238)
New in version 1.3.2, 2016-01-31
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* enhancement: {READ,WRITE}-SEQUENCE are much faster for some
combinations of short sequences and stream types
* enhancement: MAKE-LIST's result can be stack-allocated on x86-64
* bug fix: WRITE-SEQUENCE no longer fails to write lists containing
integers to bivalent streams
* bug fix: LOGTEST (and hence ODDP) no longer conses when given
fixnum arguments and small bit positions. (#1277690)
* bug fix: READ-FROM-STRING compiler-macro does not permute its
arguments
* bug fix: DEFUN of a function name that collides with a
system-generated structure accessor does not confuse the runtime.
(#540063)
* bug fix: heap corruption from miscompiled RESTART-BIND. (#1530390
)
New in version 1.3.1, 2015-11-27
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* enhancement: SB-THREAD support for ARM64.
* enhancement: compiling an out-of-line DEFSTRUCT constructor call
will warn if a defaulted value is incompatible with its slot
type.
* enhancement: a local INLINE declaration on a structure
constructor will work as intended, subject to any other factors
that inhibit inlining, even if the DEFSTRUCT was not itself
within a global INLINE proclamation for the named constructor
* enhancement: SB-EXT:DYNAMIC-SPACE-SIZE is now defined for
cheneygc.
* enhancement: x86[-64] platforms support SB-EXT:CAS on structure
slots of type SB-EXT:WORD
* enhancement: the interleaved structure slot optimization from
release 1.2.6 has been ported to 32-bit x86, Sparc, PowerPC,
ARM64.
* enhancement: SB-THREAD:JOIN-THREAD signals a proper error when an
attempt is made to join the current thread
* bug fix: NTH-VALUE does not cause stack overflow. (#1511419)
* bug fix: structure constructor type checking is better. (#1508735
)
* bug fix: supplied-p variables for unused optional or keyword
variables no longer confuse
SB-DI:PARSE-COMPILED-DEBUG-FUN-LAMBDA-LIST (and thus the
backtrace machinery) (#1498644)
* bug fix: Backtrace correctly handles undefined-function frames on
MIPS.
* bug fix: WITH-FLOAT-TRAPS-MASKED correctly clears accrued traps
on MIPS (fixes issues with floating-point type derivation in the
compiler).
* bug fix: FLOAT-NAN-P and FLOAT-TRAPPING-NAN-P now work correctly
on MIPS and HPPA.
* bug fix: MIPS context register access now masks to 32 bits
(fixing issues parsing negative-fixnum values for internal-error
arguments and escaped debug variables on 64-bit CPUs).
* bug fix: (SETF SAP-REF-DOUBLE) with constant offset on big-endian
MIPS now works correctly.
* bug fix: Callback parameter (argument) handling on MIPS is now
vastly more correct.
* bug fix: %DECREMENT-SEMAPHORE adjusts the remaining timeout after
a spurious wakeup
New in version 1.3.0, 2015-10-31
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* minor incompatible change: the environment passed to a macro/setf
/deftype expander is not always an object of type
SB-KERNEL:LEXENV. It can be nil, as is permissible by the
standard.
* enhancement: ported to ARM64 Linux.
* enhancement: a new interpreter is included which has many
benefits over sb-eval. It is disabled by default. See src/
interpreter/README for instructions to enable it, and further
details.
* bug fix: calling COMPILE when SB-EXT:*EVALUATOR-MODE* was
:INTERPRET would fail to perform "normal semantic processing such
as macro expansion" as stipulated by X3J13 issue LOAD-TIME-EVAL.
* bug fix: SB-UNICODE:CONFUSABLE-P no longer treats "<" and the
empty string as confusable. (#1504739)
* bug fix: (ASSERT (COMPUTE-IT ...)) would expand incorrectly if
COMPUTE-IT was a local macro that shadowed a global function.
* bug fix: SB-POSIX:CFSETISPEED and SB-POSIX:CFSETOSPEED now work
properly on platforms that use only the minimum specified set of
fields in struct termios (verified on Linux, still known not to
work on FreeBSD and NetBSD, very probably others). (partial fix
for #1500951)
New in version 1.2.16, 2015-09-30
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* enhancement: by default, timers with a repeat interval do not
"catch up" by repeatedly calling their function after a clock
discontinuity such as a suspend and resume cycle
* bug fix: correctly restore multiple values on the stack in the
presence of alien calls. (#1489590)
* bug fix: MAKE-STRING-OUTPUT-STREAM enforces that :ELEMENT-TYPE is
a subtype of CHARACTER.
* bug fix: an EQL method specializer no longer causes garbage
retention if there are no extant methods using the specializer. (
#492851)
New in version 1.2.15, 2015-08-30
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* new feature: DEPRECATION declaration for functions, variables and
types causes {EARLY,LATE,FINAL}-DEPRECATION-WARNING to be
signaled when subject of the declaration is used. Integrated with
DESCRIBE, DOCUMENTATION and SB-CLTL2:{VARIABLE,FUNCTION}
-INFORMATION. Documented in the "Deprecation" section of the
manual.
* enhancement: ASDF updated to 3.1.5. (#1476867)
* enhancement: definitions within PROGN get proper source locations
when compiled (needs latest Slime to take advantage of this). (#
1473147)
* enhancement: source locations for DEFCLASS slots now point
directly to the slot definitions, not the whole DEFCLASS form.
* bug fix: better source location in the presence of quoted forms.
(#1370561)
* bug fix: better source locations inside backqoute. (#1361502)
* bug fix: HANDLER-BIND requires that the handler-function be a
function designator at the time of binding establishment. (#
1480679)
* bug fix: inlined functions surrounded by nested macrolets are
properly inlined. (#309123)
New in version 1.2.14, 2015-07-29
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* minor incompatible change: The name of a compiled anonymous
lambda as returned by the third value of
FUNCTION-LAMBDA-EXPRESSION can have a lambda-list-like list
following the introductory LAMBDA that is not in general a
syntactically valid lambda list. Specifically, it won't retain
default values, supplied-p variables, or &KEY or &AUX bindings.
* enhancement: DESTRUCTURING-BIND has been totally reimplemented
from scratch to address a handful of performance and correctness
issues. Some minor behavioral differences exist regarding order
of evaluation of default forms for unsupplied &OPTIONAL and &KEY
arguments when nested destructuring patterns are involved. (#
707556, #707573, #707578, #708051)
* enhancement: DEFCONSTANT and DEFSTRUCT respect package locks. (#
1186238, #1036716)
* enhancement: sb-unicode:normalize-string has a new optional
argument, FILTER, a callback which controls which decomposed
characters are collected. Useful for stripping away diacritics
more efficiently.
* bug fix: (TYPE-OF ARRAY) for a non-simple array is subject to
change after a call of ADJUST-ARRAY. (#1333731)
* bug fix: Dynamic-extent allocation with a loop between allocating
a value and the start of its environment no longer discards the
allocated data when the loop is taken. (#1472785)
* bug fix: Variable-reference elimination no longer generates
incorrect code under certain circumstances. (#1446891)
* bug fix: variables with EQL types are no longer treated as
constants by VOPs, which caused problems with closures being
allocated for such variables, but they remained unused. (#1390149
)
* bug fix: Windows installer generates registry key name correctly.
(#1476447)
New in version 1.2.13, 2015-06-28
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* incompatible change: on success, TRY-SEMAPHORE and
WAIT-ON-SEMAPHORE return the new count
* enhancement: WAIT-ON-SEMAPHORE accepts a decrement parameter
* enhancement: JOIN-THREAD allows distinguishing timeout vs. abort
in all situations
* enhancement: On Windows DBG_PRINTEXCEPTION_C is handled and its
message is printed. (#1437947)
* bug-fix: TRUENAME works properly on broken symlinks presented as
directories. (#1400003)
* bug fix: Inlined DPB and DEPOSIT-FIELD don't interfere with
left-to-right order of argument evaluation. (#1458190)
* bug fix: (SETF (LDB (BYTE 1 2 JUNK) X) 0) is rightly rejected.
* bug fix: DEFSETF lambda lists should not permit argument
destructuring.
* bug fix: calls to (SETF SLOT-VALUE) on a missing slot would in
certain situations incorrectly return the result of a
SLOT-MISSING method instead of always returning the new value. (#
1460381)
* bug fix: a DEFMACRO occurring not at toplevel and capturing parts
of its lexical environment (thus being a closure) caused
expressions involving the macro name to cause corruption in the
pretty-printer due to faulty introspection of the lambda list of
a closure.
* bug fix: out of line MAP/MAP-INTO check that the results produced
by the function are of the matching sequence type. (#1459581)
* bug fix: pretty-printing of '(LET `((,X ,Y)) :B) is handled
correctly.
New in version 1.2.12, 2015-05-30
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* minor incompatible change: the SB-C::*POLICY* variable is no
longer a list. Code which manipulated it as such (including but
not limited to non-bundled releases of ASDF) will need to be
revised.
* enhancement: The input stream for COMPILE-FILE implements
STREAM-LINE-COLUMN.
* enhancement: EVAL errors that occur by way of LOAD report the
starting line and column number of the erring toplevel form. (#
565247)
* optimization: better MAP and MAP-INTO on known vector result
types.
* bug fix: Read/modify/write macros accessing a place which is a
composition of CAR+CDR operations, such as (SHIFTF (CADR X) (ELT
V 0)), do not access subforms more than once. (#1450968)
* bug fix: short form of DEFSETF no longer allows trailing junk.
* bug fix: DEFINE-MODIFY-MACRO respects the provisions of CLHS
5.1.3 regarding argument evaluation order. (#1452539)
* bug fix: POP works as specified in CLHS if the setter for its
argument has a side-effect on the existing CAR value. (#1454021)
* bug fix: Reading "#()" with a positive numeric argument signals a
reader error. As specified, reading "#1()" has undefined
consequences, so correct portable code should be indifferent to
this. (#1252100)
* bug fix: Malformed reader conditionals such as "(#
-no-such-feature)" and "(#+sbcl)" no longer parse as NIL. (#
1454400)
New in version 1.2.11, 2015-04-27
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* enhancement: SET-PPRINT-DISPATCH will warn when given an
expression in which any part is unrecognizable as a legal
type-specifier. The dispatch table will be altered, but the new
entry is disabled. Subsequent type-defining forms will cause
pprint-dispatch tables to re-examine whether any disabled entries
should be enabled. (#1429520)
* enhancement: Loading code containing calls to a deprecated
function will, under most circumstances, signal warnings similar
to compiling such code. The usual caveat holds about not
detecting calls through a computed name, as in (funcall (intern
"DEPRECATED-FUN" "SB-EXT")).
* enhancement: (SB-EXT:COMPILE-FILE-LINE) is a new macro that
expands to a constant (VALUES integer integer) indicating the
source line/column from which it was read, intended for logging
Lisp runtime errors in a style similar to that afforded by the C
preprocessor __LINE__ macro. Similarly
(SB-EXT:COMPILE-FILE-POSITION) returns a position in characters.
* enhancement: improved source locations for VOPs, alien types and
declarations.
* bug fix: functions in :FINAL deprecation have the correct
docstring. No visible change, as no such functions presently
exist. (#1439151)
* bug fix: (SETF (FDEFINITION this) (FDEFINITION OTHER)) signals an
error if OTHER names either a macro or special-operator. (#
1439921)
New in version 1.2.10, 2015-03-28
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* minor incompatible change: all SOCKINT::WIN32-* functions have
been deprecated with EARLY deprecation state
* minor incompatible change: performing introspection via the
system-internal SB-INT:INFO function could expose that :TYPE
:TRANSLATOR is not necessarily a function, as it always was
before. (Affects swank-fancy-inspector)
* enhancement: The value of SXHASH on bit-vectors of length equal
to the word size now depends on the vector's contents instead of
being constant; its value on bit-vectors of length divisible by
the word size now depends also on the contents of the vector's
last word.
* bug-fix: sb-bsd-sockets on win32 uses proper C function
declarations. (#1426667)
* bug fix: A new dead code elimination phase removes dead code
loops that confuse stack analysis. (#1255782, #308914)
* bug fix: A toplevel form which was simple enough to bypass the
main compiler in COMPILE-FILE, and which contained an empty SETQ
or PROGN would produce an invalid fasl file. (#1427050)
* bug fix: The compiler no longer signals an internal error when
encountering invalid FUNCTION forms like (function 1)
* bug fix: express proper dependencies in the ASDF contrib, to
support systems where make runs in parallel. (#1434768; thanks to
Nikhil Benesch)
New in version 1.2.9, 2015-02-27
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* minor incompatible change and bug fix: unboxed numeric constants
on x86oids are arranged in memory differently, and the
disassembler does not show them separately in DISASSEMBLE, but
does if DISASSEMBLE-CODE-COMPONENT is used. (#1421987)
* optimization: The compiler's treatment of type specifiers makes
it slightly faster and more memory-efficient. Portable code
should be indifferent to this change, however, users of
SB-INTROSPECT:FUNCTION-TYPE might notice that (MEMBER T NIL) and
(MEMBER NIL T) are both internally collapsed to the former, so
that the latter can never be obtained as part of an FTYPE.
* optimization: a TYPEP call in which the second argument is not a
QUOTE form but nevertheless recognized as a compile-time constant
might open-code the test. One scenario for this involves
backquote, such as (TYPEP x `(my-type ,some-arg)). Code which
relied upon deferring until runtime should declare (NOTINLINE
TYPEP). [Due to the sematic constraints of DEFTYPE etc in in CLHS
3.2.2.3, code requiring delayed evaluation could be unportable
though.]
* enhancement: unused variables at the top-level are now reported.
(#492200)
* bug fix: DEFCLASS handles cyclic {super,meta}class relations
better (#1418883)
* bug fix: compiler no longer signals an error when compiling
certain function calls. (#1416704, #404441, #1417822, #1234919)
* bug fix: compiler doesn't stumble on a LOGIOR transform. (#
1389433)
* bug fix: more robust debugger and backtraces. (#1413850, #1099500
, #1412881, #945261, #1419205, #1409402)
* bug fix: files larger than 4GB can now be compiled.
* bug fix: x86 truncated results from 64-bit foreign functions to
32 bits.
* bug fix: file-position didn't work on large files on win32. (#
1271545)
* bug fix: callbacks from foreign threads can work without enabling
sb-safepoint.
* bug fix: sb-introspect:function-lambda-list works properly on
interpeted macros. (#1387404)
* bug fix: ADJUST-ARRAY properly handles non-adjustable arrays. (#
886418)
* bug fix: compiler no longer fails to dump a multidimensional
array constant involving a circular reference to itself
* bug fix: conditional and nested DX allocation no longer confuse
the compiler in STACK analysis. (#1044465)
* bug fix: sb-rotate-byte constant folding bug fixed. (#1423682)
New in version 1.2.8, 2015-01-31
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* enhancement: better error and warning messages. (#1314767, #
736383)
* enhancement: backtrace for invalid argument count produces the
exact supplied arguments including the extra ones, on x86, x86-64
and ARM.
* enhancement: a STYLE-WARNING is signaled for DEFSTRUCT accessors
which are used before the structure is defined; similarly for the
predicate.
* optimization: FORMAT NIL with only ~a and string arguments is
transformed into CONCATENATE.
* optimization: POSITION and FIND when inlined into code that is
compiled with qualities of safety < 2 and speed > space will no
longer signal an error on circular lists, but will potentially
loop forever if given no :END constraint. As was always the case,
calls that are not inlined are safe regardless of lexical policy.
* bug fix: CLOS methods compiled with (OPTIMIZE (DEBUG 0)) no
longer cause debugger failure when printing a backtrace
* bug fix: more resilience to deleted code. (#1308328, #1390544)
* bug fix: the CLHS example of MAKE-LOAD-FORM involving
TREE-WITH-PARENT did not work, and now it does.
New in version 1.2.7, 2014-12-31
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* optimization: returning constant values refers to preboxed
constants more reliably. (#1398785)
* enhancement: a STYLE-WARNING is produced if a compiler-macro is
defined for a function after at least one ordinary (not inlined)
call to that function was compiled, indicating a likely
compilation order problem. Likewise a warning ensues if a call is
compiled to a function that is subsequently proclaimed INLINE.
* enhancement: always lose() when something goes wrong while saving
a core (instead of just printing an error on stderr in some
situations).
* enhancement: frames in the debugger are now restartable by
default.
* bug fix: restore error handling on Windows x86.
* bug fix: MAKE-SEQUENCE detects type errors in its
:INITIAL-ELEMENT at compile-time when possible. (#330299)
* bug fix: parsing of malformed type specifiers no longer results
in a memory-fault-error.
* bug fix: LOOP properly destructures nested lists in WITH.
* bug fix: MACROEXPANDing the redefinition of an alien structure
type no longer signals the wrong error.
* bug fix: PROGV doesn't get confused by forced DEBUG 3 (#1405456).
New in version 1.2.6, 2014-11-29
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* enhancement: SERVE-EVENTS uses the poll() system call in lieu of
select() if the OS has the former. Previously poll() was used
only if waiting on exactly one file descriptor.
* enhancement: efficiency of access to untagged structure slots is
improved on x86-64, and the order of slots in memory is exactly
as specified by defstruct, simplifying use of structures as
arguments to foreign calls.
* bug fix: SB-DEBUG:ARG now works in all TRACE options which
evaluate forms. (#1357826)
* bug fix: GC memory corruption during internal memory handling.
* bug fix: duplicate effective-slot-definition objects as compared
by EQ on name could be present in CLASS-SLOTS of a class whose
metaclass was structure-class or condition-class. (#1049423)
* bug fix: HANDLER-BIND with empty bindings works again; regression
in 1.2.5. (#1388707)
* bug fix: ATOMIC-INCF works on structure slots in interpreted
code. (#1381867)
* bug fix: MAKE-ARRAY properly handles character types like (eql #\
a) and (member #\a #\c). (#1392068)
* bug fix: READ sometimes accidentally preserved a whitespace
character after a token when it should not have. (#327790)
New in version 1.2.5, 2014-10-28
Back to top
* enhancement: sb-bsd-sockets now has basic support for IPv6
* enhancement: An sb-unicode package has been added, containing
many functions related to handling Unicode text
* enhancement: The reader now normalizes symbols to Normalization
Form KC (NFKC). This behavior can be disabled with
SB-EXT:READTABLE-NORMALIZATION
* enhancement: a style-warning is signaled if OPTIMIZE declarations
multiply specify a quality with differing values. (#310267)
* bug fix: conservatively pointed to pages wipe out unused dwords
so that they cannot act as false roots in turn.
* bug fix: the walker's handling of lexical variable and
symbol-macro bindings is improved (#375326, #1368305)
* bug fix: HANDLER-{BIND,CASE} no longer drop into ldb when a
clause contains an undefined condition type; regression in 1.1.19
(#1378939)
* bug fix: in interpreted code, inequality predicates did not
type-check arguments that weren't examined, and a 1-argument use
of MIN or MAX accepted a complex number. (#1373702)
* bug fix: APROPOS and APROPOS-LIST handle inherited symbols
correctly. (#1364413, thanks to Zach Beane)
New in version 1.2.4, 2014-09-27
Back to top
* enhancement: the sequence functions MAP, CONCATENATE and MERGE
now call the new generic functions SEQUENCE:MAP,
SEQUENCE:CONCATENATE and SEQUENCE:MERGE respectively when the
specified result type designates an extended sequence.
* bug fix: Wrong binding order of supplied-p parameters in macro
lambda lists. (#721135)
* bug fix: VALIDATE-SUPERCLASS returns T when the superclass is the
universal superclass (#1332983)
* bug fix: reading an uninterned symbol whose print name has the
syntax of an integer signals an error. (#310062)
* bug fix: the walker is less likely to be confused when walking
LET* forms with special bindings and use of those bindings and
others of the same name.
* bug fix: a rare bug affecting 32-bit platforms resulting in a
fatal condition with the message "Globaldb rehash failure" has
been fixed.
New in version 1.2.3, 2014-08-29
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* enhancement: DOCUMENTATION works on instances of
FUNCALLABLE-STANDARD-CLASS
* enhancement: ASSERT reports arguments of calls to lexical
functions in additional to global functions.
* enhancement: ASDF updated to 3.1.3
* enhancement: UIOP can be loaded without ASDF.
* bug fix: some methods on CHANGE-CLASS did not finalize the new
class before accessing its class-precedence list.
* bug fix: CHANGE-CLASS no longer fails on unbound slots in the
source object.
* bug fix: CHANGE-CLASS signals an appropriate error when the
destination class is a FORWARD-REFERENCED-CLASS.
* bug fix: CHANGE-CLASS no longer signals bogus TYPE-ERRORs for
slots for which initargs have been supplied.
* bug fix: saving cores on ARM was broken since the introduction of
GENCGC. (#1349795)
* bug fix: macroexpanding a backquoted expression involving ",."
outside of the compiler failed. (#1354623)
New in version 1.2.2, 2014-07-28
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* incompatible change: the #\` ("backquote") reader macro was
reimplemented to support robust pretty-printing. Reading a form
involving #\` produces an invocation of the QUASIQUOTE ordinary
macro which may contain subforms that are not lists. Code that
unportably attempts operations on un-evaluated forms resulting
therefrom, e.g. (SUBST a b (read-from-string "`(x (,y))")) might
generate incorrect results and/or errors.
* enhancement: support for GNU/kFreeBSD x86.
* enhancement: ATOMIC-INCF and ATOMIC-DECF can operate on (CAR x),
(CDR x) and DEFGLOBAL variables of type fixnum.
* enhancement: arithmetic constant reduction is now performed on
defconstant constants too. (#1337069).
* bug fix: certain ftype proclamations containing &optional t &rest
t no longer cause subsequent definitions to signal bogus
style-warnings.
* bug fix: #\Bell and #\Bel now read to different characters. (#
1319452).
* bug fix: CAS SYMBOL-VALUE on locally special variables didn't
work. (#1098355)
New in version 1.2.1, 2014-06-28
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* enhancement: GENCGC is enabled on ARM.
* enhancement: better error reporting for invalid calls to local
functions.
* enhancement: support for GNU/kFreeBSD distributions. (#1079954,
thanks to Christoph Egger)
* enhancement: experimental support for threads on NetBSD/x86-64.
(thanks to Robert Swindells)
* enhancement: support for DragonFly BSD. (#1292845, thanks to
Vasily Postnicov)
* bug fix: TYPE-OF must not return AND/OR/NOT expressions. (#
1317308)
* bug fix: accessing NIL arrays stopped producing errors. (#1311421
)
* bug fix: DISASSEMBLE no longer prints unwanted stuff. (#1251861)
* bug fix: compiling SVREF on unknown types no longer produces
scary errors. (#1258716)
* bug fix: assorted LOOP fixes and enhancements. (#645534, #1322923
, #700538, #613876, #695286, #798388)
* bug fix: silence compiler notes from the SEARCH transform. (#
1071310)
* bug fix: array type intersection handles T and unknown element
types correctly. (#1258716)
* bug fix: fix a corner case in array type unparsing that would
result in misleading translations from our internal type
representation.
* bug fix: array-rank now sees through union and intersection
types. (#1310574)
* bug fix: when DECLARE expressions are in the wrong place, be
careful not to attempt to evaluate the subforms. (#573747; thanks
to Roman Marynchak)
* bug fix: misplaced and missing declarations in DEFTRANSFORM. (#
1066451)
* bug fix: FBOUNDP returned NIL for a class of incorrect function
names instead of signaling an error. (#1095483)
* bug fix: fix a compile-time AVER in regalloc: lifetime analysis
used to (rarely) introduce duplicate conflict markers in a single
TN/block pair. (#1327008)
New in version 1.2.0, 2014-05-27
Back to top
* bug fix: read-time-eval backquote context mixup. (#1321047)
* enhancement: when SAVE-LISP-AND-DIE fails due multiple threads,
the report of the signaled conditions lists currently running
threads.
* enhancement: ported to ARM linux.
* enhancement: sb-gmp contrib has been updated. (#1305266)
* enhancement: new contrib sb-mpfr by Stephan Frank.
* bug fix: MAKE-SEQUENCE works with sequence types defined via
DEFTYPE (#1315846, thanks to Mark Cox)
* bug fix: SET-[DISPATCH-]MACRO-CHARACTER should coerce a symbolic
function-designator to a function only as needed. (#1012335)
* bug fix: remove references to asdf-install from the manual. (#
1207544, thanks to Thomas Hlavaty)
* bug fix: handle --without-xxx options to make.sh more carefully.
(#1246665, thanks to Richard M Kreuter)
* bug fix: prevent maybe-delete-exit from doing semantically broken
things with local exits. (#309099, #518099, #533930)
* bug fix: attempts to subclass BUILT-IN-CLASSes signal errors, as
required by AMOP. (#861004)
New in version 1.1.18, 2014-04-28
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* optimization: COERCE is now more effecient for more cases when
the type is known at compile-time. (#1309815)
* bug fix: correctly inherit condition initforms. (#1300904)
* bug fix: properly pprint literal functions inside nested lists. (
#1300716)
* bug fix: more-correctly handle array-type unity (broken for ages,
causing compilation problems since 1.1.13.x due to smarter TYPEP
type propagation, reported by jasom in #lisp).
New in version 1.1.17, 2014-03-30
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* enhancement: printing backtraces respects
SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* when printing call
arguments (#1261646)
* optimization: defstruct out-of-line accessor are now as fast as
inlined. (#1264924)
* bug fix: INVOKE-RESTART-INTERACTIVELY no longer refuses to invoke
RESTART instances with a test-function (reported by Vivitron in #
sbcl)
* bug fix: STREAM-ERROR-POSITION-INFO fails in fewer situations (#
1264902)
* bug fix: Change COND error message (#1254511)
* bug fix: LOAD is no longer confused when called on a directory. (
#1077996)
* bug fix: MAKE-CONDITION reports names of missing condition
classes properly (#1199223)
* bug fix: restore building with clang. (#1293643)
* bug fix: restore building on SPARC (broken since 1.1.15).
* bug fix: improved FreeBSD support.
* bug fix: PPC floating point conversion corrupted stack.
New in version 1.1.16, 2014-02-28
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* minor incompatible change: improve read/print consistency for
pathnames on Win32, by using the circumflex character #\^ as the
escape character. (#673625)
* enhancement: SB-EXT:DEFINE-LOAD-TIME-GLOBAL. (#1253688)
* enhancement: Loading fasls with symbols from an undefined package
includes the name of the symbol in the error message.
* bug fix: problems when redefining classes and doing TYPEP on
classes concurrently. (#1272742)
* bug fixes to the x86-64 XCHG instruction:
+ it was misencoded when used with RAX, R8-R15 registers.
(reported by Eric Marsden)
+ it was misencoded when used to exchange EAX with itself.
+ the disassembler wrongly printed XCHG RAX, R8 and the
corresponding 32- and 16-bit variations as NOP.
* bug fix: the disassembler outputs source annotations in the right
place and no longer randomly drops some of them. (#1249205)
* bug fix: fix commutative-arg-swap from introducing undumpable
structures into code, prevent code with errors from being
compiled. (#1276282)
* bug fix: pathnames with :back in their directory component are
succeffully resolved.
* bug fix: the deterministic profiler now uses ENCAPSULATE
functionality to wrap functions around. (#309086)
New in version 1.1.15, 2014-01-29
Back to top
* new feature: the iterative spilling/coloring register allocator
developed by Alexandra Barchunova during Google Summer of Code
2013 is now merged in. By default, it only activates for
functions that optimize with (speed 3) and (> speed
compilation-speed), but setting
sb-regalloc:*register-allocation-method* to :iterative forces its
execution. The previous behaviour can be obtained by instead
setting that variable to :greedy. Thanks again to Google for
their support, and, more crucially, to Alexandra Barchunova for
her hard work.
* optimization: make-array with known element-type and unknown
dimensions is much faster.
* optimization: make-array with unknown element-type is faster as
well. (#1004501)
* enhancement: sb-ext:save-lisp-and-die on Windows now accepts
:application-type argument, which can be :console or :gui. :gui
allows having GUI applications without an automatically appearing
console window.
* enhancement: reduced conservativism on GENCGC platforms:
conservative roots must be valid-looking tagged pointers or point
within a code object, not merely point to within the allocated
part of a page, in order to pin a page.
* enhancement: support for "Mac Roman" external format.
* enhancement: encapsulation of named generic functions now happens
without altering the identity of the function bound to the name.
* bug fix: Windows applications without the console window no
longer misbehave. (patch by Wilfredo Velazquez, #1256034).
* bug fix: modular arithmetic optimizations do not stumble on dead
branches with bad constants. (reported by Douglas Katzman)
* bug fix: CLISP can be used again as a cross-compilation host.
(Thanks to Vasily Postnicov, #1261451)
* bug fix: run-program crashed with :directory nil. (#1265077)
New in version 1.1.14, 2013-11-30
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* optimization: complicated TYPEP tests are less opaque to the type
propagation pass. (#1229340)
* optimization: [N]BUTLAST perform a single pass over the list. (#
1245697)
* optimization: EQUALP on structures with raw slots (double-float/
complex) no longer conses and is faster.
* optimization: RESTART-CASE expands to more compact code. Thanks
to Jan Moringen. (#1249055)
* enhancement: Top-level defmethod without defgeneric no longer
causes undefined-function warnings in subsequent forms. (#503095)
* enhancement: Better error messages for system errors on Windows.
* enhancement: run-sbcl.sh is usefully handled by rlwrap. Thanks to
William Cushing. (#1249183)
* enhancement: new function SB-EXT:ASSERT-VERSION->= accepts a
version specification (multiple integer arguments) and signals a
continuable error if the current SBCL version is lower (older)
than the specification. (#674372)
* enhancement: better ARRAY-RANK result derivation. (#1252108)
* bug fix: EQUALP now compares correctly structures with raw slots
larger than a single word.
* bug fix: contribs couldn't be built on Windows with MinGW.
* bug fix: Better pathname handling on Windows. (#922117)
* bug fix: OPEN reports a more meaningful error when an existing
file is opened for output with :if-exists :new-version. Thanks to
Philip Munksgaard. (#455381)
* bug fix: DEFSTRUCTs with NIL as a slot name no longer cause
strange CLOS-related errors. (#633911)
* bug fix: GC deadlocks caused by concurrent consing on Windows.
New in version 1.1.13, 2013-10-31
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* optimization: better distribution of SXHASH over small conses of
related values. (#309443)
* other improvements to SXHASH:
+ use the whole of the positive-fixnum range for SXHASH of
fixnums
* enhancement: The error message when calling an undefined alien
function includes the name of the function on x86-64.
* enhancement: sb-ext:run-program now supports :environment on
Windows.
* enhancement: ASDF is no longer required to load contribs at
runtime. (#1132254)
* enhancement: when called with a symbol, FIND-RESTART no longer
calls COMPUTE-RESTARTS, making it faster and cons less (#769615)
* enhancement: FIND-RESTART and COMPUTE-RESTARTS handle huge
restart clusters better in some cases
* enhancement: SOME/ANY/other quantification higher-order functions
no longer cons. (#1070635)
* bug fix: forward references to classes in fasls can now be
loaded. (#746132)
* bug fix: don't warn on a interpreted->compiled function
redefinition from the same location. (patch by Douglas Katzman, #
1042405)
* bug fix: Create vectors of proper internal length when reading
literal vectors from FASLs. (Reported by Jan Moringen)
* bug fix: COMPILE can now successfully compile setf functions.
(Reported by Douglas Katzman)
* bug fix: run-program performs more correct escaping of arguments
on Windows. (#1239242)
* bug fix: function-lambda-expression on generic functions returns
the actual name.
* bug fix: (the [type] [constant]) now warns when [constant]
matches [type] except for the number of values. (Reported by
Nathan Trapuzzano on sbcl-help)
* bug fix: signal errors in required cases of slot-definition
initialization protocol. (#309072)
* bug fix: run-sbcl.sh works better in the presence of symlinks on
OS X. (thanks to Stelian Ionescu, #1242643)
* bug fix: when given a restart object, FIND-RESTART checks whether
the restart is active and, when a condition is supplied, whether
the restart is associated to a different condition (#774410)
New in version 1.1.12, 2013-09-30
Back to top
* enhancement: Add sb-bsd-sockets:socket-shutdown, for calling
shutdown(3). (thanks to Jan Moringen, #1207483)
* enhancement: document extensible sequences. (thanks to Jan
Moringen, #994528)
* optimization: EQUAL and EQUALP transforms are smarter. (thanks to
Elias Martenson, #1220084)
* optimization: CHAR-EQUAL is faster for constant and base-char
arguments.
* bug fix: probe-file now can access symlinks to pipes and sockets
in /proc/pid/fd on Linux. (reported by Eric Schulte)
* bug fix: SBCL can now be built on Solaris x86-64.
* bug fix: Floating point exceptions do not persist on Solaris
anymore.
* bug fix: (setf . a) is pprinted correctly (reported by Douglas
Katzman).
* bug fix: handle compiler-error in LOAD when it's not run from
inside EVAL. (#1219601)
* bug fix: SB-GMP:MPZ-POW no longer segfaults given a non-bignum
base. (thanks to Stephan Frank)
* bug fix: space allocation of result bignums in SB-GMP is more
accurate. (thanks to Stephan Frank, #1206191)
* bug fix: sb-safepoint can now reliably handle signal
interruptions of foreign code. (#1133018)
* bug fix: the compiler-macro for MAKE-INSTANCE when emitting
"fallback" constructors no longer fails to merge actual and
default initargs (thanks to Jan Moringen, #1179858)
* bug fix: the compiler-macro for MAKE-INSTANCE when emitting
"fallback" constructors handles non-KEYWORD initialization
arguments more correctly.
* bug fix: loading the SB-SIMPLE-STREAMS contributed module no
longer clobbers FILE-NAMESTRING. (thanks to Anton Kovalenko, #
884603)
* bug fix: class definitions with CPLs inconsistent with their
metaclasses are less likely to destroy the object system's
integrity. (#309076)
* bug fix: restart clause parsing in RESTART-CASE is more in line
with the standard. (#1203585, thanks to Jan Moringen)
* bug fix: silence a note from RESTART-CASE under high-SPEED
optimization settings. (#1023721)
* bug fix: getting the order of arguments to
SB-MOP:SET-FUNCALLABLE-INSTANCE-FUNCTION wrong produces a
sensible error rather than a failed AVER. (reported by Paul
Nathan)
* bug fix: Parsing of &optional/&key/&rest arguments now never
overwrites arguments during copying on x86 and x86-64; it may
still happen on other platforms when there are more fixed
arguments than stack slots. (reported by Jan Moringen)
New in version 1.1.11, 2013-08-28
Back to top
* enhancement: support building the manual under texinfo version 5.
(#1189146)
* enhancement: Windows builds no longer display the "Kitten of
Death" message. A warning is instead appended to the regular
banner, and may be muted with --noinform. (#728247)
* enhancement: support building under new linker handling of
syscalls under NetBSD. (thanks to Robert Swindells)
* bug fix: undefined function errors are now properly reported on
PPC and MIPS. (regression since 1.1.9)
* bug fix: (funcall (function X junk)) didn't causes an error when
X had a compiler macro. (thanks to Douglas Katzman).
* bug fix: signal a warning when defining a setf-function when a
setf-expander is already present. (thanks to Douglas Katzman).
* bug fix: improved threading on PPC.
* bug fix: ROOM works again on Windows. (#1206456)
* bug fix: Streams were flushed even when there was one byte still
left in the buffer. (#910213)
* bug fix: OPEN handles correctly when :if-exists and
:if-does-not-exist are either NIL or :ERROR. (reported by Jan
Moringen)
New in version 1.1.10, 2013-07-28
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* enhancement: ASDF has been updated to 3.0.2.
* optimization: stack frames are packed more efficiently on
x86oids, which ought to reduce the frequency of Methuselahn
conservative references (it certainly helps with gc.impure.lisp /
BUG-936304 on x86).
* optimization: on x86 and x86-64, integer negation forms like (-
x) are now recognized in modular arithmetic contexts, and compile
to native negate, rather than going through bignums only to keep
the low bits.
* bug fix: Compiling potential modularic arithmetic forms does not
cause type errors when some integer types lack lower or upper
bounds. (#1199127)
* bug fix: Non-trivial modular arithmetic forms are always cut to
the right bitwidth before being used in a non-modular context. (#
1199428)
* bug fix: Multiple catch/unwind blocks in a single function are
now allocated in the right stack order on win32. (#1072739)
New in version 1.1.9, 2013-07-04
Back to top
* new feature: the contrib SB-GMP links with libgmp at runtime to
speed up arithmetic on bignums and ratios. (contributed by
Stephan Frank)
* enhancement: disassemble now annotates some previously missing
static functions, like LENGTH.
* enhancement: clean.sh now also cleans doc/internals.
* enhancement: SB-EXT:PRINT-SYMBOL-WITH-PREFIX can be used within ~
// to print a symbol with a package prefix.
* enhancement: The debugger and backtracing are more robust against
buggy PRINT-OBJECT methods.
* optimization: calls to static functions on x86-64 use less
instructions.
* optimization: compute encode-universal-time at compile time when
possible.
* optimization: when referencing internal functions as #'x, don't
go through an indirect fdefn structure.
* optimization: SLEEP doesn't cons on non-immediate floats and on
ratios.
* optimization: (mod fixnum) type-checks are performed using one
unsigned comparison, instead of two.
* optimization: enable more modular arithmetic transforms in the
presence of conditionals.
* optimization: bitwise OR forms can now trigger modular arithmetic
as well, when the result is known to be negative.
* optimization: recognize more cases of useless LOGAND/LOGIOR with
constants.
* optimization: comparisons between rationals and constant floats
or between integers and constant ratios are now converted to
rationals/integers at compile time.
* optimization: Smaller and faster DOUBLE-FLOAT-LOW-BITS on x86-64.
* bug fix: problems with NCONC type derivation (reported by Jerry
James).
* bug fix: EXPT type derivation no longer constructs bogus
floating-point types. (reported by Vsevolod Dyomkin)
* bug fix: sb-bsd-sockets has correct declaration of the canonname
field of addrinfo. (#1187041, patch by Jerry James)
* bug fix: uninitialized type-error conditions can now be printed.
(#1184586)
* bug fix: tests for sb-bsd-sockets no longer use a predefined port
for listening, allowing several tests to run in parallel.
* bug fix: during disassembly to *COMPILER-TRACE-OUTPUT*
instruction prefixes as used on x86 and x86-64 no longer
sometimes print incorrectly. (#1085729)
* bug fix: Specialised SIMD-PACK types can be negated.
* bug fix: Modular arithmetic is more robust. (incidentally fixes
another bug reported by Eric Marsden)
* bug fix: FP return values from foreign calls are always rounded
to single or double float precision on x87.
* bug fix: Known-safe vector access on x86oids should not fail
spuriously when the index is of the form (+ x
constant-positive-integer).
* bug fix: Remove GPL-licensed files from source distribution. (#
1185668)
* bug fix: backtrace printer no longer tries to create very large
lists when the arg-count register is clobberred by other code. (#
1192929)
* bug fix: x86 should never signal an FP exception while boxing an
FP value, a situation that lands us into ldb.
New in version 1.1.8, 2013-06-02
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* notice: The implementation of MAP-ALLOCATED-OBJECTS (the heart of
ROOM, plus a few SB-INTROSPECT functions) has been completely
rewritten; it may now exhibit different bugs than before.
* new feature: minimal runtime/compiler intrastructure support for
SSE SIMD values, as SB-EXT:SIMD-PACK. Enabled on x86-64 via the
build-time feature :sb-simd-pack. This should enable intrinsics
extensions as libraries, without patching SBCL itself. Thanks to
Alexander Gavrilov for maintaining a branch for so long.
* enhancement: RUN-PROGRAM supports a :DIRECTORY argument to set
the working directory of the spawned process. (#791800) (patch by
Matthias Benkard)
* enhancement: boxed vectors (vectors of T or of FIXNUM) can now be
stack-allocated on PPC.
* enhancement: "fixed objects" can now be stack-allocated on PPC.
* enhancement: WITH-PINNED-OBJECTS no longer conses on PPC/GENCGC.
* enhancement: (sb-introspect:find-definition-sources-by-name x
:vop) now also returns VOPs which do not translate any functions,
and finds defoptimizer types ir2convert and
stack-allocate-result.
* enhancement: better type derivation for APPEND, NCONC, LIST. (#
538957)
* enhancement: MAP-ALLOCATED-OBJECTS (the heart of ROOM) now walks
the heap in a manner similar to the GC rather than its previous
ad-hoc scheme, and is therefore no less and possibly more
accurate.
* fixes and enhancements related to Unicode:
+ the character database information has been updated to
Unicode 6.2;
+ support for canonical and compatibility decomposition of
characters has been added, along with support for primary
composition;
+ support for Unicode normalization forms of strings (NFC,
NFKC, NFD and NFKD) has been included;
+ querying the character database for code points not defined
by Unicode gives less wrong answers (#1178038, reported by
Ken Harris)
* enhancement: print intermediate evaluation results for some
ASSERTed expressions. (#789497) (patch by Alexandra Barchunova)
* enhancement: x86-64 disassemblies are annotated with unboxed
constant values when there are references to (RIP-relative)
unboxed constants.
* bug fix: type derivation for LOG{AND,IOR,XOR} scales linearly
instead of quadratically with the size of the input in the worst
case. (#1096444)
* bug fix: handle errors when initializing
*default-pathname-defaults*, sb-ext:*runtime-pathname*,
sb-ext:*posix-argv* on startup, like character decoding errors,
or directories being deleted.
* bug fix: Loading a core with a discontiguous dynamic space now
correctly computes the amount of dynamic space used.
* bug fix: disassembler missing ",8" on SHLD
* bug fix: backtracing through INTERNAL-ERROR signal handlers on
systems that provide an "invalid" stack frame link for the signal
handler itself now use the saved-fp-and-pc mechanism to pick up
from the stack frame in the interrupt (signal) context. This is
known to affect threaded FreeBSD/x86-64.
* bug fix: some LOOP statements couldn't be compiled. (#1178989)
* bug fix: sb-sequence:dosequence works on literal vectors.
* bug fix: errors in generic arithmetic show the assembly routine's
caller on x86 and x86-64. (#800343)
* bug fix: Compile-time type errors should never result in
COMPILE-FILE failure. (#943953)
* bug fix: Known bad local calls do not cause strange failures when
emitting or dumping code. (#504121)
* bug fix: Multiply-inlined structure constructor don't cause
IR2-time codegen errors: type checks are inserted as necessary. (
#1177703)
* bug fix: Unsigned modular arithmetic is correctly converted into
signed modular arithemtic (mostly to exploit fixnum-width VOPs).
(#1026634)
* bug fix: a combination of inlined local function with &optional
and recursion no longer causes undescriptive compiler errors. (#
1180992)
* bug fix: sub-word BOOLEAN alien types now disregard higher order
bits when testing for non-zero-ness.
* bug fix: (CONCATENATE 'null ...) no longer fails for generic
sequences. (#1162301)
* bug fix: Type mismatch for the value of conditional expressions
are correctly reported when detected at compile-time, instead of
complaining about a constant NIL (similar for non-EQ-comparable
catch tags).
* bug fix: Referring to INLINE global functions as values should
not result in a compilation failure. (#1035721)
* optimization: faster ISQRT on fixnums and small bignums
* optimization: faster and smaller INTEGER-LENGTH on fixnums on
x86-64.
* optimization: On x86-64, the number of multi-byte NOP
instructions used for code alignment is now always minimal.
* optimization: On 64-bit targets, the compiler generates much
faster code for type checks for types known at compile time that
are smaller than (SIGNED-BYTE 64) or (UNSIGNED-BYTE 64) and
larger than FIXNUM, and their COMPLEX variants.
* optimization: On x86 targets, more uses of ALIEN-FUNCALL during
cross compilation now inline the INVOKE-WITH-SAVED-FP-AND-PC
dance.
* optimization: ROOM no longer conses so egregiously on non-x86oid
systems.
* optimization: associative bitwise operations reassociate patterns
like (f (f x k1) k2) to expose (f x (f k1 k2)). Same for + and *
of rational values.
* optimization: quasiquote expressions now perform more constant
folding, instead of consing equal lists at runtime. (#1026439)
* optimization: local call analysis of inlined higher-order
function should converge more quickly, resulting in better code
for complex functions.
* optimization: On x86-64, medium (word-sized but wider than 32
bits) integer constants are handled more cleverly, especially
when they can be represented as sign-extended (signed-byte 32).
(Based on a patch by Douglas Katzman)
* optimization: IF/IF conversion should reliably result in sane
code when (some of) the results of the inner IF are always false
or always true.
* optimization: On x86oids, variable right shifts of machine words
are compiled into straight SAR/SHR, instead of going through the
generic VOP. (#1066204)
New in version 1.1.7, 2013-04-29
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* enhancement: TRACE :PRINT-ALL handles multiple-valued forms. (#
457053)
* bug fix: :allocation slot option works for condition slots (#
1049404)
* bug fix: redefining conditions does not lead to multiple
evaluations of hairy slot initfunctions anymore (#1164969)
* bug fix: CLASS-DIRECT-DEFAULT-INITARGS now works for condition
classes (#1164970)
* bug fix: function constants now work as initforms and default
initarg values of conditions (#539517)
* bug fix: svref/(setf svref) on symbol macros don't crash the
compiler anymore. (Minimal test case provided by James M.
Lawrence on sbcl-devel)
* bug fix: no more bogus ## references when pretty printing
backquoted forms with non-trivial structure sharing. (#1161218)
* bug fix: Don't signal an error on (setf (documentation nil
'function) "doc"). Signal a style-warning instead when trying to
set documentation of NIL for all other documentation types.
(Reported by Zach Beane; regression since 2e52fa05.)
* bug fix: modular arithmetic involving large constants and
conditionals should no longer result in spurious dead code
elimination. (Reported by Eric Marsden).
* bug fix: our mach exception handler can seemingly called very
early in the program execution process on OS X 10.8.0. Try and
handle that case robustly, without potentially leaking mach ports
too much.
* optimization: LOGBITP and LOGTEST optimizations from x86 ported
to x86_64.
New in version 1.1.6, 2013-03-29
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* enhancement: the continuable error when defknown-ing over extant
fndb entries can be ignored by passing :overwrite-fndb-silently t
as a keyword argument to sb-c:defknown (after attributes). Useful
to allow defknown to be re-loaded. Use with :allow-other-keys t
for backward compatibility.
* optimization: compiler is much faster in compiling SVREF and
(SETF SVREF) forms.
* bug fix: Prevent a make-array transform from modifying source
forms causing problems for inlined code. Thanks to Bart Botta.
(regression since 1.0.42.11-bis)
* bug fix: clear-output calls the correct gray stream routine,
sb-gray:stream-clear-output. (#1153257)
* bug fix: an error is signalled for an invalid format modifier: ~
<~@>. (#1153148)
* bug fix: Better error messages for package operations (#1154776)
* bug fix: delete-package on a nonexistent package should signal a
cerror. (regression since 1.0.37.44).
* bug fix: accessing &MORE (stack allocated &REST) arguments checks
bounds. (#1154946, #1072112)
* bug fix: compiling make-array no longer signals an error when the
element-type is an uknown type, a warning is issued instead.
Thanks to James Kalenius (#1156095)
* bug fix: SEARCH on generic (non-VECTOR non-LIST) sequence types
no longer produces wrong results for some inputs. (Thanks to Jan
Moringen.) (#1153312)
New in version 1.1.5, 2013-02-26
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* minor incompatible change: SB-SPROF:WITH-PROFILING no longer
loops by default.
* new feature: package local nicknames. See manual for details.
* new feature: SB-EXT:MAP-DIRECTORY provides a powerful interface
for directory traversal: it is the backend used by SBCL for
CL:DIRECTORY.
* enhancement: easier to use restarts for resolving name-conflicts
resulting from IMPORT, EXPORT, or USE-PACKAGE.
* enhancement: variant DEFPACKAGE forms now signal a full error
with restarts provided for resolving the situation. (#891351)
* enhancement: by setting SB-EXT:*ON-PACKAGE-VARIANCE*
appropriately variant DEFPACKAGE forms can now signal a full
error with restarts provided for resolving the situation. See
manual for details. (#891351)
* enhancement: make-random-state now uses CryptGenRandom as a seed
on Windows. (Thanks to Anton Kovalenko.) (#1102748)
* enhancement: backtrace improvements
+ secondary CLOS dispatch functions have better debug names (#
503081)
+ easier to read method names in backtraces. See
SB-DEBUG:*METHOD-FRAME-STYLE*.
+ SB-DEBUG:PRINT-BACKTRACE and SB-DEBUG:LIST-BACKTRACE are
available as forwards-compatible replacements for
SB-DEBUG:BACKTRACE and SB-DEBUG:BACKTRACE-AS-LIST.
+ SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS** has been deprecated, as
the same information is available in less intrusive form as
frame annotations.
* enhancement: SB-POSIX now provides MAP-ANON.
* enhancement: test-suite results are colorized, failures in red,
unexpected success in green. Works on Windows and on terminals
with ANSI escape code support. Can be disabled with --no-color.
* optimization: SB-CONCURRENCY:QUEUE implementation is more
efficient. (thanks to James M. Lawrence)
* bug fix: no more unused variable style warnings from RESTART-CASE
macroexpansion (#1113859)
* bug fix: no more unused variable style warnings when loading
sb-bsd-sockets.asd (#1114681)
* bug fix: deleting a package removes it from
implementation-package lists of other packages.
* bug fix: SB-SPROF:WITH-PROFILING is now usable in the Slime REPL
on Darwin. This does not fix the occasional "interrupt already
pending" issue, though.
* bug fix: (setf (documentation 'x 'function)) and (setf
(documentation #'x t)) set documentation in different places.
(regression since 1.0.43.63)
* bug fix: build on newer glibc. (#1095036)
New in version 1.1.4, 2013-01-30
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* optimization: LOOP expressions using "of-type character" have
slightly more efficient expansions.
* bug fix: very long (or infinite) constant lists in DOLIST do not
result in very long compile times or heap exhaustion anymore. (#
1095488)
* bug fix: `#3(1) is read as #(1 1 1), not as #(1). (#1095918)
* bug fix: adjust-array ignored :initial-element for
simple-vectors. (#1096359)
* bug fix: optimizations to MAKE-INSTANCE with literal list
initargs no longer cause infinite loops (on circular data) or
violate eqlity constraints. (#1099708)
* bug fix: FIRST was not being open coded. (regression from 1.1.0)
New in version 1.1.3, 2012-12-31
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* enhancement: warnings about bad locale settings, LANG, LC_CTYPE,
etc. (#727625)
* enhancement: support for C-c to interrupt the foreground thread
on Windows. (Thanks to Anton Kovalenko.)
* enhancement: STDCALL alien callbacks. (Thanks to Anton
Kovalenko.)
* enhancement: Safepoint builds on POSIX platforms can now
optionally be built without pseudo-atomic sequences and their
run-time overhead.
* enhancement: Threads created outside of Lisp can enter Lisp
through alien callbacks and appear as Lisp threads for the
duration of that function invocation. On safepoint builds only.
* enhancement: Miscellaneous improvements to namestrings and
underlying calls to OS functions for file system access on
Windows. (Thanks to Anton Kovalenko.)
* enhancement: The MSI installer support for Windows now uses
Windows Installer XML at least version 3.5 and includes various
usability improvements. (Thanks to Dmitry Kalyanov and Anton
Kovalenko.)
* enhancement: The sb-bsd-sockets contrib now supports
non-blocking-mode on Windows. (Thanks to Anton Kovalenko.)
* enhancement: The Windows backend now supports the x86-64
platform. (Thanks to Anton Kovalenko.)
* bug fix: fasls are now once again directly executable (on
platforms supporting shebang lines, with a suitably-installed
sbcl).
* bug fix: make.sh --help no longer runs clean.sh. (#937001)
* bug fix: Fix CAS access to slots of direct instances of structure
classes in the presence of subclasses sharing the same conc-name.
* bug fix: Logical pathname namestrings on Windows have been
changed to be lower-case, to minimize differences between POSIX
and Windows.
New in version 1.1.2, 2012-12-01
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* notice: System requirements for SBCL on Microsoft Windows:
Windows NT 5.1 or newer (Windows XP, Server 2003) is required.
Support for Windows 2000 (NT 5.0) is no longer being maintained.
* notice: Starting with this version, SBCL on Windows no longer
supports building with disabled thread support.
* enhancement: frlocks have been added to SB-CONCURRENCY contrib
module.
* enhancement: New feature sb-dynamic-core allows the runtime to be
rebuilt or relocated without requiring changes to the core file
on all linkage table platforms. Required on Windows. (Thanks to
Anton Kovalenko.)
* enhancement: Console I/O streams use UCS-2. (Thanks to Anton
Kovalenko.)
* enhancement: I/O on Windows unnamed pipes is interruptible
asynchronously using interrupt-thread, timers when running on
Windows NT version 6.1 or newer (Windows 7, Server 2008 R2).
(Thanks to Anton Kovalenko.)
* enhancement: Support for the experimental safepoint-based
stop-the-world protocol on the PowerPC platform.
* bug fix: Non-blocking reads from the Windows console were not
necessarily non-blocking. Thanks to Anton Kovalenko. (#308923)
* bug fix: stability of threads on Windows has been improved upon
through an updated stop-the-world protocol (thanks to Anton
Kovalenko).
New in version 1.1.1, 2012-11-02
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* enhancement: WITH-COMPILATION-UNIT no longer grabs the
world-lock. (COMPILE and COMPILE-FILE still do.)
* optimization: the SPARC backend now supports the precise
generational (GENCGC) garbage collection. Enabled by default on
Solaris/SPARC and Linux/SPARC. Thanks to Raymond Toy (via CMUCL).
* enhancement: add experimental support for the SB-THREAD feature
and the timer facility on Windows. Thanks to Dmitry Kalyanov and
Anton Kovalenko. Threads are enabled by default, and this version
of SBCL is considered to be the last and final release to
officially support building with threads disabled.
* optimization: The compiler no longer rotates loops in some cases
where this transformation actually lead to worse code being
generated.
* bug fix: SB-CLTL2:MACROEXPAND-ALL correctly handles shadowing of
symbol-macros by lexical bindings.
* bug fix: stack allocation was prevented by high DEBUG declaration
in several cases.
* bug fix: SB-EXT:GC-LOGFILE signaled an error when no logfile was
set. (thanks to SANO Masatoshi)
* bug fix: PARSE-NATIVE-NAMESTRING performed non-native parsing
when :JUNK-ALLOWED was true.
* bug fix: type derivation inferred overly conservative types for
unions of array types. (#1050768)
New in version 1.1.0, 2012-10-01
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* enhancement: New variable, sb-ext:*disassemble-annotate* for
controlling source annotation of DISASSEMBLE output. Defaults to
T.
* enhancement: TIMEOUT arguments added to WITH-MUTEX and
WITH-RECURSIVE-LOCK, and WAIT-P argument added to
WITH-RECURSIVE-LOCK.
* enhancement: SB-EXT:ATOMIC-PUSH and SB-EXT:ATOMIC-POP allow
atomic operations on list heads.
* enhancement: Optional features (not enabled by default) allow the
use of signals for inter-thread synchronization to be reduced on
certain supported platforms (currently Linux, Solaris, and
FreeBSD on x86 and x86-64). Set (and :sb-thread :sb-safepoint
:sb-thruption :sb-wtimer) to test these experimental features.
Known remaining bugs include minor thread safety issues, less
timely freeing of memory by GC, and certain (not yet optimally
low) runtime overhead. Thanks to Anton Kovalenko.
* optimization: CL:SORT and CL:STABLE-SORT of lists are faster and
use fewer comparisons, particularly on almost-sorted inputs.
* bug fix: Reading floats with large exponents no longer takes too
much time before reporting that the exponent is too large.
* bug fix: SB-BSD-SOCKETS:SOCKET-RECEIVE with a UDP socket now
works correctly when the received datagram is larger than the
provided buffer. (#1023438, thanks to Robert Uhl)
* bug fix: SB-EXT:GET-CAS-EXPANSION returned a bogus read-form when
given a SYMBOL-VALUE form with a constant symbol argument.
* bug fix: SB-EXT:GET-CAS-EXPANSION signaled an error when a macro
expanding into a DEFCAS defined place was used as the place.
* bug fix: FIND and POSITION signaled a type-error when non-bits
where looked for from bit-vectors.
* bug fix: a race condition around thread creation could (in SBCL
1.0.57) lead to internal errors or crashes (#1058799).
* documentation: a section on random number generation has been
added to the manual. (#656839)
New in version 1.0.58, 2012-08-06
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* enhancement: implicit generic function warnings now specify the
package in which the new generic function is being created.
* enhancement: SB-EXT:ATOMIC-UPDATE makes it easy to perform
non-destructive updates of CAS-able places (similar to Clojure's
swap!).
* enhancement: run-program no longer decodes and re-encodes
environment when :environment argument is not provided. (#985904)
* enhancement: errors during compiler-macro expansion no longer
cause runtime errors, only a compile-time warning, otherwise
behaving as if the compiler macro had declined to expand.
* optimization: On x86-64, code alignment of block headers is done
with multi-byte NOPs now instead of repetitions of the
single-byte NOP.
* optimization: MAP-INTO is substantially faster when the target
sequence is of unknown type; mapping into lists is no longer O(N^
2). (#1001043, thanks to James M. Lawrence)
* optimization: the compiler no longer heap-conses to check exits
in cases where the exit function is dynamic extent, or when it
can prove the exit function cannot escape. (#1002534)
* optimization: SB-SEQUENCE:DOSEQUENCE is faster on vectors of
unknown element type, and vectors that aren't SIMPLE-ARRAYs.
* optimization: CL:SORT and CL:STABLE-SORT are more efficient in
execution speed (around 1/3 the time in some cases), and a little
better in terms of comparison calls. (Thanks to Takeru Ohta)
* bug fix: On SPARC, a limitation on the number of code constants
emittable by the compiler has been lifted, allowing certain long
functions to compiled and assembled which had previously been
unsupported; fixes cl-bench on this ISA (#1008996).
* bug fix: potential for infinite recursion during compilation of
CLOS slot typechecks when dependency graph had loops. (#1001799)
* bug fix: error forms reported with some program-errors were not
escaped properly.
* bug fix: functions from EVAL are now on more equal footing with
functions from COMPILE. (#1000783, #851170, #922408)
* bug fix: ENSURE-GENERIC-METHOD-COMBINATION accepts method
combination objects as its :METHOD-COMBINATION argument, not just
lists designating method combinations. (#936513)
* bug fix: run-program no longer unconditionally uses /tmp/ for
temporary files. (#968837).
* bug fix: restore build on solaris/sparc. (#1008506)
* bug fix: an issue with LDB in the PowerPC backend has been
resolved; this fixes an issue found with cl-postgres (thanks to
Tomas Hlavaty).
* bug fix: compiler-macro lambda-lists specifying non-keyword
symbols as keyword arguments no longer accidentally match
unevaluated symbols against them.
* bug fix: FORMAT used to loop infinitely in some cases when a
COLINC parameter was zero, now it signals an error. (#905817,
fixed since 1.0.56.19)
* bug fix: run-program with :pty t no longer makes the pty as the
process's controling terminal.
* bug fix: spawning threads on OS X 10.8 no longer crashes the
process (#1012811).
New in version 1.0.57, 2012-05-20
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* RANDOM enhancements and bug fixes:
+ bug fix: the range and distribution of random integers could
be catastrophically wrong when the compiler derived the type
of its argument as a disjoint set of small integers.
+ bug fix: the distribution of random integers is now
completely uniform even when the specified limit is not a
power of two. (Previously some values could be about 0.1 %
more probable than others in the worst case.) (#309467)
+ RANDOM on large integer arguments is generally faster and
conses less than before; this is visible for fixnums above a
length of about 24 bits, but extremely so for bignums: the
old implementation used time and space quadratical in the
size of the argument there, the new one is linear.
* enhancement: redesigned protocol for quitting SBCL. SB-EXT:EXIT
is the new main entry point, SB-EXT:QUIT is deprecated.
* enhancement: additions to the SB-THREAD API: RETURN-FROM-THREAD,
ABORT-THREAD, MAIN-THREAD-P, and MAIN-THREAD.
* enhancement: FASL loading no longer grabs the world-lock.
* enhancement: GENCGC reclaims space more aggressively when objects
being allocated are a large fraction of the total available heap
space. (#936304)
* enhancement: backtraces show the correct number of arguments for
frames called with too many arguments.
* enhancement: support for abort(3), exit(3), and _exit(2) has been
added to SB-POSIX.
* enhancement: ASDF has been updated 2.21.
* optimization: fewer uses of full calls to signed modular
functions. (#903821)
* optimization: typechecking alien values is typically 5 x faster.
* optimization: FDEFINITION, SYMBOL-FUNCTION, MACRO-FUNCTION, and
FBOUNDP are 20% faster.
* bug fix: file compilation performance issues when dumping
subtypes of CHARACTER (#994487)
* bug fix: fixed disassembly of some SSE instructions on x86-64.
* bug fix: SB-SIMPLE-STREAMS signals an error for bogus :CLASS
arguments in OPEN. (#969352, thanks to Kambiz Darabi)
* bug fix: CASE normal-clauses do not allow T and OTHERWISE as
keys. (#959687)
* bug fix: (SETF (FIND-CLASS X) NIL) removed proper name of the
underlying classoid even if X was not the proper name of the
class. (#941102)
* bug fix: declaration leakage between lexical environments due to
careless use of NCONC in MAKE-LEXENV. (#924276)
* bug fix: ENSURE-DIRECTORIES-EXIST now works when
*default-pathname-defaults* contains NAME or TYPE components.
* bug fix: PPRINT couldn't print improper lists with CARs being
some symbols from CL package, e.g. (loop . 10).
* bug fix: run-program with existent or non-existent files for
:output or :input when :if-output-exists or
:if-input-does-not-exist are NIL properly returns NIL instead of
signalling an obscure error.
* bug fix: fix miscompilation of some logand forms with large
constant arguments. (#974406)
* bug fix: account for funcallable-instance objects properly in
ROOM.
* bug fix: incorrect octets reported for c-string decoding errors.
(#985505)
* bug fix: miscompilation of LDB on the PowerPC platform. (thanks
to Bruce O'Neel)
* bug fix: better input error reporting for COMPILE-FILE. (#493380)
* bug fix: default size of non-nursery generations has been shrunk
on GENCGC, allowing faster release of memory back to the OS. (#
991293)
* bug fix: WITH-DEADLINE (:SECONDS NIL :OVERRIDE T) now drops any
existing deadline for the dynamic scope of its body.
* bug fix: compiler-internal interval arithmetic needed to be more
conservative about open intervals when operated on by monotonic
but not strictly-monotonic functions. (#975528)
* bug fix: copy-tree caused stack exhaustion on long linear lists,
and now it's also slightly faster. (#998926)
* bug fix: better error messages for malformed declarations. (#
1000239)
* bug fix: define-condition didn't return the name of the defined
condition.
* documentation:
+ improved docstrings: REPLACE (#965592)
New in version 1.0.56, 2012-04-12
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* bug fix: fix copy-structure. When copying from stack to heap,
garbage could end up in the heap making GC unhappy. (Thanks to
James Knight, #911027)
* enhancements
+ SBCL can now be built using Clang.
+ ASDF has been updated 2.20.
* bug fix: compiler errors when weakening hairy integer types. (#
913232)
* bug fix: don't complain about a too-hairy lexical environment for
inlining when the function has never been requested for inlining.
(#963530)
New in version 1.0.55, 2012-01-09
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* enhancements to building SBCL using make.sh:
+ --fancy can be specified to enable all supported feature
enhancements.
+ --with- and --without- can be used to
specify which features to build with.
+ --arch option can be used to specify the architecture to
build for. (Mainly useful for building 32-bit SBCL's on
x86-64 hosts, not full-blows cross-compilation.)
* enhancement: extended package prefix syntax ::
which allows specifying name of the default
interning package for the whole form.
* enhancement: when *READ-EVAL* is true, arrays with element type
other than T can be printed readably using #.-based syntax.
(Thanks to Robert Brown)
* enhancement: MAKE-ALIEN signals a storage-condition instead of
returning a null alien when malloc() fails. (#891268)
* enhancement: SB-EXT:PRINT-UNREADABLY restart for
PRINT-NOT-READABLE conditions can be conveniently accessed
through function with the same name, analogously to CONTINUE.
* enhancement: SB-EXT:*SUPPRESS-PRINT-ERRORS* can be used to
suppress errors from the printer by type, causing an error marker
to be printed instead. (Thanks to Attila Lendvai)
* enhancement: BACKTRACE and DESCRIBE now bind *PRINT-CIRCLE* to T,
and generally behave better when errors occur during printing.
* enhancement: the test runner now takes a --report-skipped-tests
argument to report the individual tests skipped as well as the
number of skipped tests.
* enhancement: undefined functions now appear in backtraces as
("undefined function") instead of ("bogus stack frame") on
x86oids.
* enhancement: detected deadlocks no longer cause stderr to be
spammed, and deadlock errors are reported in an
easier-to-decipher manner.
* enhancement: DESCRIBE on type designators reports the expansion
in more cases.
* enhancement: SBCL now provides either an explicit :BIG-ENDIAN or
:LITTLE-ENDIAN in *FEATURES*, instead of :BIG-ENDIAN being
implied by lack of the :LITTLE-ENDIAN feature. (Thanks to Luis
Oliveira, #901661)
* enhancement: better disassembly of segment-prefixes on x86 and
other instruction prefixes (e.g. LOCK) on x86 and x86-64.
* optimization: FIND and POSITION on bit-vectors are orders of
magnitude faster (assuming KEY and TEST are not used, or are
sufficiently trivial.)
* optimization: SUBSEQ on vectors of unknown element type is
substantially faster. (#902537)
* optimization: specialized arrays with non-zero :INITIAL-ELEMENT
can be stack-allocated. (#902351)
* optimization: the compiler is smarter about representation
selection for floating point constants used in full calls.
* optimization: the compiler no longer refuses to coerce large
fixnums to single floats inline, except on x86 where this
limitation is still necessary.
* optimization: truncation operations on integers with constant
divisor arguments 1 and -1 are optimized away.
* bug fix: deadlock detection could report the same deadlock twice,
for two different threads. Now a single deadlock is reported
exactly once.
* bug fix: interval-arithmetic division during type derivation did
not account for signed zeros.
* bug fix: compiler error when typechecking a call to a function
with non-constant keyword arguments.
* bug fix: misoptimization of TRUNCATE causing erratic behaviour.
* bug fix: condition slot accessors no longer cause undefined
function style-warnings when used in the :REPORT clause of the
DEFINE-CONDITION form that defines them. (#896379)
* bug fix: DEFGENERIC warns about unsupported declarations, as
specified by ANSI. (#894202)
* bug fix: SUBTYPEP tests involving forward-referenced classes no
longer bogusly report NIL, T.
* bug fix: bogus style-warnings for DEFMETHOD forms that both
declared some required arguments ignored and performed
assignments to others. (#898331)
* bug fix: *EVALUATOR-MODE* :COMPILE treated (LET () ...)
identically to (LOCALLY ...) leading to internally inconsistent
toplevel-formness.
* bug fix: non-toplevel DEFSTRUCT signaled a style warning for
unknown type.
* bug fix: redefining a function whose previous definition
contained an unknown type no longer causes a style-warning. (#
806243)
* bug fix: undefined functions now appear in backtraces as
("undefined function") instead of ("bogus stack frame") on
non-x86oids.
* bug fix: backtraces are no longer cut off at ("undefined
function") when called under certain circumstances (involving a
caller-allocated stack frame) on PPC.
* bug fix: RUN-PROGRAM leaked a file-descriptor per call on
non-Windows systems. (regression since 1.0.53)
* bug fix: GC deadlocks from dladdr() on certain platforms.
* bug fix: broken standard streams no longer automatically cause
recursive errors on debugger entry.
* bug fix: build ignored --dynamic-space-size= argument to
make.sh (regression since 1.0.53)
* bug fix: attempts to stack allocate a required argument to a
function with an external entry point caused compiler-errors.
* bug fix: compiler notes for failed stack allocation for a
function argument no longer claim to be unable to stack allocate
the function.
* bug fix: COERCE now signals a type-error on several coercions to
subtypes of CHARACTER that are forbidden according to ANSI. (#
841312)
* bug fix: missing failure-to-stack-allocate compiler notes for
some forms of MAKE-ARRAY with dynamic-extent. (#902351)
* bug fix: some of the compile-time side-effects of DEFCLASS were
not caught by package locks.
* bug fix: Proper handling of --dynamic-space-size option on 32 bit
platforms.
New in version 1.0.54, 2011-12-05
Back to top
* minor incompatible changes:
+ RENAME-FILE on a symbolic links used to rename the linked-to
file instead of the link.
+ DELETE-DIRECTORY on symbolic link to a directory used to
delete the directory, but now signal an error instead. Use
TRUENAME to resolve the pathname if you wish to delete the
linked directory, and DELETE-FILE if you wish to delete the
+ The internal SB-THREAD::SPINLOCK API has been deprecated, and
using symbols associated with it will trigger a compile-time
warning.
* thread-related enhancements: (This work has been funded by the
SBCL Threading 2011 IndieGoGo campaign. Many thanks to generous
donors!)
+ Threading is now more reliable on non-Linux platforms. We
still don't consider threads on non-Linux platforms good
enough to enable them by default, but they're in a clearly
better shape now.
+ Deadlines supported now on all platforms.
+ All blocking functions in the threading API now have a
:TIMEOUT argument.
+ Semaphore notification objects have been added to SB-THREAD.
+ SB-CONCURRENCY contrib now includes Allegro-style GATE
objects.
+ SB-EXT:COMPARE-AND-SWAP has been extended to support
SLOT-VALUE, STANDARD-INSTANCE-ACCESS, and
FUNCALLABLE-STANDARD-INSTANCE-ACCESS.
+ Users can now defined new places usable with
SB-EXT:COMPARE-AND-SWAP using an API anologous to defining
new SETFable places.
* GC-related enhancements and bug fixes:
+ --dynamic-space-size and --control-stack-size now understand
Kb, Mb, and Gb suffixes. Default is megabytes as before.
+ on GENCGC targets, the default dynamic space size is now
512Mb for 32-bit systems, and 1Gb for 64-bit systems.
(OpenBSD/x86-64 is the only exception, defaulting to mere
444Mb to fit under default ulimits.) The new defaults are in
place to prevent hitting swap on low-end systems. Use
build-time option --dynamic-space-size to build an SBCL with
another default, or the runtime option to adjust the size at
startup: a good size is at most equal to the amount of
physical memory the system has.
+ on GENCGC targets, nursery and generation sizes now default
to 5% of dynamic-space size.
+ on GENCGC targets, SB-KERNEL:MAKE-LISP-OBJ no longer
categorically refuses to create SIMPLE-FUN objects.
+ on 64-bit GENCGC targets, setting the nursery size above 4Gb
now works. (#870868)
+ on CHENEYGC targets, SB-KERNEL:MAKE-LISP-OBJ now does the
same validation of pointer objects as GENCGC does, instead of
a comparatively weak bounds-check against the heap spaces.
* SB-BSD-SOCKETS bug fixes:
+ GET-PROTOCOL-BY-NAME had a significant memory leak.
+ GET-HOST-BY-NAME and GET-HOST-BY-ADDRESS small amounts of
memory on systems with getaddrinfo().
+ GET-HOST-BY-NAME and GET-HOST-BY-ADDRESS weren't thread or
interrupt safe outside systems with getaddrinfo().
* enhancement: ASDF has been updated 2.019.
* enhancement: special-case TCO prevention for functions which
never return extended to untrusted types, keeping one more
frame's worth of debug information around in many cases.
* enhancement: debug-names of anonymous and local function are more
descriptive. Affects backtraces and SB-SPROF results. (#805100)
* enhancement: on win32, ABS of complex floats guards better
against overflows. (#888410)
* enhancement: RUN-PROGRAM now distinguishes exec() failing from
child process exiting with code 1. (#676987)
* enhancement: convenience function SET-SBCL-SOURCE-LOCATION for
informing the system where on the filesystem the SBCL sources
themselves are located. (Thanks to Zach Beane)
* enhancement: the compiler is now able to derive tighter bounds
for floating point numbers in some cases. (Thanks to Lutz Euler,
#894498)
* bug fix: on 64-bit targets, atomic-incf/aref does index
computation correctly, even on wide-fixnum builds. (#887220)
* bug fix: (DIRECTORY "foo/*/*.*") did not follow symlinks in foo/
that resolved to directories.
* bug fix: type mismatch when assigning to lexical variables no
longer result in fasl-dumping internal type objects. (#890750)
* bug fix: type mismatch on (SETF AREF) and function return values
no longer result in fasl-dumping internal type objects.
* bug fix: With several combinations of argument types, for example
(EXPT <(complex double)>), EXPT now uses
double-precision throughout instead of partially calculating only
to single-precision. (#741564; thanks to Lutz Euler)
* bug fix: SYMBOL-VALUE-IN-THREAD is no longer able to construct
bogus objects when interrupted by GC on PPC.
New in version 1.0.53, 2011-11-06
Back to top
* enhancement: on 64-bit targets, in src/compiler/generic/
early-vm.lisp, the parameter n-fixnum-tag-bits may now vary from
1 (fixnum = (signed-byte 63)) to 3 (fixnum = (signed-byte 61)) at
build-time.
* enhancement: SB-EXT:WAIT-FOR allows waiting for arbitrary events.
* minor(?) incompatible(?) change: The default fixnum width on
64-bit targets is now 63 bits (up from 61).
* enhancement: DESCRIBE now reports a lambda-list and source
location for complext setf-expanders.
* bug fix: PUSH, PUSHNEW, POP, REMF, INCF, DECF,
DEFINE-MODIFY-MACRO, GETF, LOGBITP, LDB, and MASK-FIELD now
arrange for non-primary values of multiple-valued places to be
set to NIL, instead of signalling an error (per a careful reading
of CLHS 5.1.2.3).
* bug fix: floating-point traps now work on darwin/x86 and /x86-64.
* bug fix: repair crash in x86oid darwin signal handling emulation
when built with certain compilers.
* bug fix: SB-ROTATE-BYTE misrotated to the right when using
constant rotation arguments on x86-64. (#882151)
* bug fix: low-level control flow optimisations could result in
bogus code in functions with tail and non-tail calls to local
functions on x86oids. (#883500)
* bug fix: on SPARC/:sb-unicode, avoid crashing the assembler by
trying to emit literal characters > (code-char 4095), for
comparisons with constant characters.
* bug fix: ROOM reported only the low 32 bits of dynamic space
usage on 64 bit platforms. (#881445)
* bug fix: DELETE-FILE did not MERGE-PATHNAMES, making it possible
to delete the wrong file when using relative pathnames. (#882877)
* bug fix: optimized SEARCH of vectors-on-vectors mishandled
zero-length sequences and :KEY NIL.
New in version 1.0.52, 2011-10-09
Back to top
* enhancement: ASDF has been updated to version 2.017.
* enhancement: the --core command line option now accepts binaries
with an embedded core.
* enhancement: when built with :sb-core-compression, core files
(regular or executable) can be compressed with zlib. Use the
:COMPRESSION argument to SAVE-LISP-AND-DIE to specify a
compression level.
* enhancement: --[no-]merge-core-pages determines whether the
runtime hints the operating system that identical core pages
between SBCL processes should share the same physical memory.
Default is to only enable this for compressed cores.
* optimization: SLEEP no longer conses.
* optimization: *PRINT-PRETTY* no longer slows down printing of
strings or bit-vectors when using the standard pretty-print
dispatch table.
* bug fix: non-function FTYPE declarations no longer cause a
compiler-error. (#738464)
* bug fix: compiler-errors causes by MEMBER types in conjunction
with with AREF, CHAR, etc. (#826971)
* bug fix: compiler-errors causes by integer arguments with
composed of multiple ranges to ARRAY-IN-BOUNDS-P. (#826970)
* bug fix: ,@ and ,. now signal a read-time error for certain
non-list expressions. (#770184)
* bug fix: complex single float literals are correctly aligned when
used as arguments of arithmetic operators.
* bug fix: on 32-bit platforms, rounding of double floats larger
than a fixnum is correct. (reported by Peter Keller)
* bug fix: stray FD-HANDLERs are no longer left lying around after
unwinds from RUN-PROGRAM. (#840190, reported by Dominic Pearson;
fix from Max Mikhanosha)
* bug fix: redefining classes such that slots with custom
allocation are added or removed works again.
New in version 1.0.51, 2011-08-21
Back to top
* minor incompatible change: SB-BSD-SOCKET socket streams no longer
participate in SERVE-EVENT by default: pass :SERVE-EVENTS T to
MAKE-SOCKET-STREAM if using SERVE-EVENT.
* enhancement: added support for socket keepalive timeout intervals
and probe counts on Linux.
* enhancement: building 32-bit SBCL on Linux/x86-64 now works
without a chroot. (Use "SBCL_ARCH=x86 sh make.sh" to build.)
* enhancement: added new toplevel options --quit and
--non-interactive (#822712).
* enhancement: the Windows port of SBCL now builds and runs on Wine
(thanks to Anton Kovalenko).
* enhancement: more, and more correct, SSE instruction definitions
on x86-64 (thanks to Alexander Gavrilov).
* enhancement: SB-EXT:SPIN-LOOP-HINT assembles to an instruction
designed to help the processor execute spin loops, when
applicable. Currently implemented for x86 and x86-64.
* optimization: unsigned integer divisions by a constant are
implemented using multiplication (affects CEILING, FLOOR,
TRUNCATE, MOD, and REM.)
* optimization: improved type-derivation for LOAD-TIME-VALUE.
* bug fix: correct RIP offset calculation in SSE comparison and
shuffle instructions. (#814688)
* bug fix: COERCE to unfinalized extended sequence classes now
works. (reported by Jan Moringen; #815155)
* bug fix: a compiler error during typecheck generation, reported
by Eric Marsden. (#816564)
* bug fix: obsolete instance protocol fires when shared slots are
added or removed.
* bug fix: fixed-format floating point printing with scaling
factors. (#811386)
* bug fix: using GCC >= 4.6 to build SBCL on x86 no longer breaks
backtraces. (#818460)
* bug fix: better backtraces for interrupted syscall frames on x86.
(#549673)
* bug fix: SSE comparison instructions can be disassembled even
when one operand is in memory. (#814702)
* bug fix: incomplete writes when not using SERVE-EVENTS. (#820599)
* bug fix: MULTIPLE-VALUE-BIND + VALUES -> LET conversion could
lose derived type information associated with the VALUES form.
* bug fix: broken warnings/errors for type-errors involving
LOAD-TIME-VALUE forms. (#823014)
* bug fix: OPEN :IF-EXISTS :APPEND now returns correct
FILE-POSITION before first write (#561642).
* bug fix: compiled closures from EVAL could not be DESCRIBEd. (#
824974)
* bug fix: bound propagation involving conversion of large bignums
to floats no longer signals a SIMPLE-TYPE-ERROR, reported by Lutz
Euler. (#819269)
* bug fix: &REST to &MORE conversion still works in unsafe call to
known functions; reported by Lutz Euler (#826459).
* bug fix: bogus deadlocks from interrupts and GCs. (#807475,
regression since 1.0.48)
New in version 1.0.50, 2011-07-12
Back to top
* enhancement: errors from FD handlers now provide a restart to
remove the offending handler.
* enhancement: SB-INTROSPECT:FIND-DEFINITION-SOURCE now works on
structure copiers as well.
* enhancement: location of user or system initialization file can
now easily be customized for saved cores. See:
SB-EXT:*USERINIT-PATHNAME-FUNCTION* and
SB-EXT:*SYSINIT-PATHNAME-FUNCTION*.
* enhancement: SB-EXT:MAKE-THREAD accepts an argument list
designator for the thunk, as a keyword argument, :arguments.
* enhancement: constraint propagation is simplified (and sped up)
when COMPILATION-SPEED > SPEED.
* enhancement: SB-ALIEN exports alien type specifiers SIZE-T and
OFF-T.
* enhancement: debugger understands &MORE arguments better.
* optimization: extracting bits of a single-float on x86-64 has
been optimized. (#555201)
* optimization: MAP and MAP-INTO are more efficient for non-simple
vectors, when (> SPEED SPACE).
* optimization: local call trampolines (x86 and x86-64) are emitted
inline.
* optimization: implicit value cells for dynamic-extent closed-over
bindings on x86 and x86-64 can hold unboxed values as well.
* meta-optimization: improved compilation speed, especially for
large functions. (#792363 and #394206)
* bug fix: bound derivation for floating point operations is now
more careful about rounding possibly closing open bounds. (#
793771)
* bug fix: SB-POSIX:SYSCALL-ERROR's argument is now optional.
(accidental backwards incompatible change in 1.0.48.27)
* bug fix: occasional debugger errors in when a type-error occured
in a function with dynamic-extent &rest list.
* bug fix: &optional and &key supplied-p arguments in DEFSTRUCT
boa-construtors can be used to initialized structure slots.
* bug fix: FMAKUNBOUND removes the MACRO-FUNCTION, should one
exist. (#795705, regression)
* bug fix: DIRECTORY works better on logical pathnames.
* bug fix: RUN-PROGRAM no longer fails spuriously when argument
strings are of the order of ARRAY-TOTAL-SIZE-LIMIT. (#787237)
* bug fix: the compiler no longer constant-folds NaNs in MAKE-
{SINGLE,DOUBLE}-FLOAT. (#486812)
* bug fix: FORMAT now handles floating point rounding correct, eg.
(format nil "~,1F" 0.01) => "0.0" instead of "0.01" as
previously. (#308961)
* bug fix: style warning during lambda-list introspection of
generic functions with both optional and key argments.
* bug fix: regalloc doesn't barf on unused TNs due to type-directed
constant folding. (#729765)
* bug fix: Fixed an off-by-one in MAP-ALLOCATED-OBJECTS that might
have caused infinite loops.
New in version 1.0.49, 2011-06-05
Back to top
* minor incompatible change: WITH-LOCKED-HASH-TABLE no longer
disables interrupts for its body.
* enhancement: source locations are now available for files loaded
as source, compile-time-too evaluation, and initialization files.
* enhancement: WITH-COMPILATION-UNIT :SOURCE-NAMESTRING allows
providing virtual source-file information, eg. overriding
input-file of COMPILE-FILE when a temporary file is used for
compilation.
* enhancement: ASDF has been updated to version 2.015.3.
* enhancement: backtraces involving frames from the default
evaluator are more readable.
* enhancement: RUN-PROGRAM works with user-defined binary input and
output streams.
* enhancement: more informative compile-time warnings and runtime
errors for type-errors detected at compile-time.
* enhancement: deadlock detection for mutexes and spinlocks.
* enhancement: dynamic-extent for &rest lists stack allocate only
their spines, not their argumets. While portable code should not
rely on this, particularly in combination with inlining, it
should make dynamic-extent easier to use safely.
* enhancement: SB-POSIX improvements:
+ WNOHANG and WUNTRACED are exported.
+ SYSCALL-ERROR now also provides the name of the failing
system call.
* enhancement: --script improvements:
+ errors on standard input, output, and error streams are
handled and cause scripts to exit silently, making them
easier to use in shell pipelines.
+ backtraces from scripts now go to standard error instead of
the terminal even if one is available.
+ --script can be an argument, causing the script to be loaded
from standard input.
* enhancement: MAKE-ALIEN-STRING provides an easy way to transport
lisp strings to foreign memory.
* enhancement: (SETF GC-LOGFILE) allows logging garbage collections
to a file, making it easier to understand heap dynamics.
* optimization: using a &REST argument only in APPLY or VALUES-LIST
calls allows the compiler to automatically elide rest-list
allocation so long as the call sites are in functions that the
compiler knows cannot escape. (#504575)
* optimization: CALL-NEXT-METHOD using explicit arguments is
faster, especially in safe code when none of the required
arguments have changed their identities.
* bug fix: blocking reads from FIFOs created by RUN-PROGRAM were
uninterruptible, as well as blocking reads from socket streams
created with for which :SERVE-EVENTS NIL. (regression from
1.0.42.43)
* bug fix: SET-SYNTAX-FROM-CHAR now removes dispatch-macro
character syntax from the to-char if the from-char is not a
dispatch-macro character.
* bug fix: references to undefined variables in function calls that
are optimized away now signal a runtime error. (#722734)
* bug fix: miscompilation of MULTIPLE-VALUE-CALL when asserting
derived types from a function defined in the same file.
(regression from 1.0.43.57)
* bug fix: TRULY-THE forms are now macroexpandable and
setf-expandable. (#771673)
* bug fix: spurious errors during QUIT when standard streams were
closed.
New in version 1.0.48, 2011-05-09
Back to top
* incompatible change: SB!KERNEL:INSTANCE-LAMBDA, deprecated for
over five years, is now no longer supported.
* enhancement: read() and write() have been added to SB-POSIX.
* enhancement: types of DEFSTRUCT constructors are proclaimed more
accurately, allowing better typechecking of call-sites.
* enhancement: errors during compile-time-too processing (i.e.
EVAL-WHEN) are no longer caught. (reverted to pre 1.0.34
behaviour)
* optimization: slightly faster ISQRT. (#713343)
* bug fix: better support for Solaris /bin/sh in sh-based tests.
* bug fix: TRACE behaves better when attempting to trace undefined
functions. (#740717)
* bug fix: missed optimizations for (FUNCALL (LAMBDA ...) ...) in
comparison to (FUNCALL #'(LAMBDA ...) ...).
* bug fix: ((LAMBDA ...) ...) forms with invalid argument counts
resulted in a compile-time error. (#720382)
* bug fix: forms such as (FUNCALL (FUNCTION NAME OOPS) ...) were
compiled without complaints.
* bug fix: less verbose source forms for functions from EVAL. (#
747485)
* bug fix: sense of SLOT-BOUNDP-USING-CLASS was inverted in a
MAKE-INSTANCE optimization. (regression from 1.0.45.18/1.0.46.15)
* bug fix: package locks did not protects against compile-time
side-effects of DEFUN. (#675584)
* bug fix: --dynamic-space-size argument is validated more
carefully. (#721457)
* bug fix: memory fault from printing a malformed simple-condition.
(#705690)
* bug fix: redefining classes so that slot-definition classes
change now engages the obsolete instance protocol. (#766271)
* bug fix: constant improper lists could break source coverage
recording. (#767959)
* bug fix: compiling calls to eg. MEMBER with massive constant list
arguments could exhaust stack.
New in version 1.0.47, 2011-03-27
Back to top
* bug fix: fix mach port rights leaks in mach exception handling
code on darwin/x86 and /x86-64. (thanks to Willem Oudshoorn for
motivation and the initial patch)
* enhancement: --script muffles style-warnings and compiler notes.
(#677779)
* enhancement: redefinition warnings for macros from different
files. (#434657)
* enhancement: better MACHINE-VERSION on Darwin x86 and x86-64. (#
668332)
* enhancement: (FORMAT "foo" ...) and similar signal a compile-time
warning. (#327223)
* enhancement: no more "in: LAMBDA NIL" messages from the compiler
for forms processed using EVAL -- now the appropriate toplevel
form is reported instead.
* enhancement: more legible style-warnings for inappropriate IGNORE
and IGNORABLE declarations. (#726331)
* enhancement: :NOT-NULL option has been added to alien C-STRING
type to indicate that NIL/NULL is excluded from the type.
* enhancement: SB-INTROSPECT:MAP-ROOT allows mapping over pointers
contained in arbitrary objects.
* optimization: SLOT-VALUE &co are faster in the presence of
SLOT-VALUE-USING-CLASS and its compatriots.
* optimization: core startup time is reduced by 30% on x86-64. (#
557357)
* bug fix: SB-DEBUG:BACKTRACE-AS-LIST guards against potentially
leaking stack-allocated values out of their dynamic-extent. (#
310175)
* bug fix: attempts to use SB-SPROF for wallclock profiling on
threaded x86-64 builds caused a type-error.
* bug fix: calling COMPILE with something else than a
lambda-expression as the second argument reports a more sensible
error. (#718905)
* bug fix: invalid combinations of :PREDICATE and :TYPE options in
DEFSTRUCT are detected. (#520607)
* bug fix: constant keyword argument checking didn't take
:ALLOW-OTHER-KEYS into account.
* bug fix: SLOT-BOUNDP information is correct during MAKE-INSTANCE
in the presence of (SETF SLOT-VALUE-USING-CLASS) and
SLOT-BOUNDP-USING-CLASS methods. (regression from 1.0.45.18)
* bug fix: INITIALIZE-INSTANCE :AROUND methods supplying initargs
via CALL-NEXT-METHOD work correctly. (regression from 1.0.45.19)
* bug fix: several foreign functions accepting string also accepted
NIL and consequently caused a memory fault at 0 now signal a
type-error instead. (#721087)
* bug fix: under rare circumstances, constraint propagation could
rewrite a variable reference to refer to a variable not in scope,
causing an error during physical environment analysis when
attempting to close over the variable. (#551227)
* bug fix: SIMPLE-CONDITION :FORMAT-CONTROL defaults to NIL.
New in version 1.0.46, 2011-02-20
Back to top
* enhancement: largefile support on Solaris.
* enhancement: SB-PROFILE:REPORT now supports :LIMIT and
:PRINT-NO-CALL-LIST arguments (#710017)
* enhancement: SB-PCL:+SLOT-UNBOUND+ is exported, making it
possible to distinguish unbound instance slots when using
STANDARD-INSTANCE-ACCESS &co. (#718039)
* optimization: ERROR and CERROR are approximately 5 times faster.
* optimization: optimized constructors are used for MAKE-INSTANCE
of classes with applicable non-standard (SETF
SLOT-VALUE-USING-CLASS), SLOT-BOUNDP-USING-CLASS, and
INITIALIZE-INSTANCE :AROUND methods, speeding up instance
creation in those cases.
* optimization: arithmetic operations with multiple constant
arguments in now have them reduced at compile-time. (#676414)
* optimization: determining current character position on
string-streams for pretty-printing was overly slow.
* bug fix: local tail calls to DYNAMIC-EXTENT functions can no
longer cause lifetime analysis to overwrite closed-over variables
(#681092).
* bug fix: encoding errors from some multibyte external formats
such as EUC-JP were not handled correctly (#713063).
* bug fix: printing waitqueue objects without setting
*PRINT-CIRCLE* to T is now safe (#673630).
* bug fix: Solaris/x86-64 wasn't getting built with lutex support
by mistake. (#667297).
* bug fix: CONSTANTLY generated functions had bogus lambda-lists. (
#713626)
* bug fix: RUN-PROGRAM :PTY option was racy on OpenBSD. (#669485)
* bug fix: UNINTERN takes a symbol, not a symbol designator --
could previously unintern the wrong symbol with the same name. (#
693796)
* bug fix: COPY-PPRINT-DISPATCH always has access to a pristine
table, making it possible to restore the initial table if it has
been messed up. (#678409)
New in version 1.0.45, 2010-12-06
Back to top
* enhancement: ~/ and ~user/ are treated specially in pathnames.
Refer to documentation for details.
* enhancement: ASDF has been updated to version 2.010.
* optimization: mutated closed-over variables that are only
accessed by DYNAMIC-EXTENT closures (currently only FLET and
LABELS functions declared to be DYNAMIC-EXTENT) are stored
directly in their containing stack frame, rather than allocating
a VALUE-CELL (#586103).
* optimization: UNWIND-PROTECT cleanup functions are now declared
DYNAMIC-EXTENT.
* bug fix: backtracing function with &REST arguments now shows the
full argument list. (#310173)
* bug fix: return types for functions with complex lambda-lists are
now derived properly (#384892)
* bug fix: when SPEED > SPACE compiling CONCATENATE 'STRING with
constant long string arguments slowed the compiler down to a
crawl.
* bug fix: closure VALUE-CELLs are no longer stack-allocated (#
308934).
* bug fix: non-standard MAKE-METHOD-LAMBDA methods could break
RETURN-FROM in the DEFMETHOD body.
* bug fix: # should no longer appear in
compiler messages, being instead replaced with the corresponding
function name.
* bug fix: don't derive overly complex unions of numeric types for
arithmetic operators. (#309448)
New in version 1.0.44, 2010-11-06
Back to top
* enhancement: RUN-PROGRAM accepts :EXTERNAL-FORMAT argument to
select the external-format for its :INPUT, :OUTPUT, AND :ERROR
:STREAMs.
* enhancement: ALLOCATION-INFORMATION also provides the page the
object resides on.
* enhancement: default dynamic-space size can be configured at
build-time without touching source, using the
--dynamic-space-size argument to make.sh.
* enhancement: DESCRIBE recognizes symbols naming optimization
policy qualities, and mentions ALWAYS-BOUND declarations.
* enhancement: ATOMIC-INCF now supports AREF of (SIMPLE-ARRAY
SB-EXT:WORD (*)) as a place.
* enhancement: ASDF has been updated to 2.009.
* enhancement: the system detects known type-erros in calls better,
signalling a full warning about violated proclaimed FTYPEs and
violations of derived FTYPEs within the same file, including
self-calls.
* enhancement: new function: SB-EXT:DELETE-DIRECTORY is now
provided.
* optimization: constant-folding exploits numeric and character
types, in addition member types.
* optimization: numeric, character and member types that are
inhabited by exactly one value are tested with EQL.
* optimization: more conditional branches are eliminated during
IR1. Branches are simplified before performing if/if-conversion,
and simple equivalent branches (that only read the same constant
or variable) are merged.
* improvements to the Windows port:
+ change: canonical unparsing form for pathname namestrings now
uses / as directory separator. NATIVE-NAMESTRING still uses \
as the separator.
+ bug fix: stackoverwriting due to incorrect usage of
PeekConsoleInput on Windows. (thanks to Kalyanov Dmitry)
+ bug fix: build now works on cygwin with GCC 4.x installed.
(thanks to Kalyanov Dmitry)
+ bug fix: run-sbcl.sh now works on Cygwin. (thanks to Kalyanov
Dmitry)
* bug fix: compiler failed to derive the result-type of MAKE-ARRAY
as (AND VECTOR (NOT SIMPLE-ARRAY)) when appropriate. (#309130)
* bug fix: (THE (VALUES ...)) in LOAD-TIME-VALUE caused a
compiler-error. (#646796)
* bug fix: interrupts arriving during CL:OPEN caused an error.
* bug fix: overeager character buffering could cause input to block
spuriously when reading from a pipe (#643686)
* bug fix: more efficient timer expiry should avoid starvation on
systems where number of SIGALRMs per second is restricted. (#
375515)
* bug fix: non-unicode builds no longer fail (broken since
1.0.36.15).
* bug fix: compile-times no longer scale linearly with the size of
quoted lists in source-code. (#654289)
* bug fix: better errors for unknown external-formats in OPEN. (#
561974)
* bug fix: DEBUG>SPEED no longer degrades ALIEN-FUNCALL performance
quite so badly. (#654485)
* bug fix: SB-INTROSPECT:FIND-DEFINITION-SOURCES-BY-NAME no longer
signals an error for eg. STRUCTURE. (#458015)
* bug fix: LOOP WITH NIL = ... signalled an unused variable
style-warning. (#613871, thanks to Roman Marynchak)
* bug fix: more reliable &REST list type derivation. (#655203)
* bug fix: PPRINT-LOGICAL-BLOCK multiply-evaluated
:PER-LINE-PREFIX, and issued pointles code-deletion notes for it,
:PREFIX, and :SUFFIX.
* bug fix: the compiler didn't utilize the proclaimed ftype for
functions also declared NOTINLINE. (#655581)
* bug fix: the compiler could attempt to emit constant left shifts
of greater value than n-word-bits. (#309063)
* bug fix: (SETF SYMBOL-FUNCTION) and (SETF FDEFINITION) clear
derived type information for the function being set. (#659220)
* bug fix: the system used to signal bogus STYLE-WARNINGs when
functions containing self-calls were recompiled with a new
signature, and failed to warn when a self-call using the old
signature was left in. (#655126)
* bug fix: incorrect FILE-POSITION on streams opened using
:EXTERNAL-FORMAT :DEFAULT when the default external had character
size other than 8 bits. (#657183)
* bug fix: derived types of functions in the same file were
implicitly trusted, leading to potential heap corruption when
those function were defined incompatibly. (#657499)
* bug fix: existing ASDF source registries are ignored when
building contribs (#659105)
* bug fix: short-form DEFSETF checks that the second argument is a
symbol (#655824, thanks to Roman Marynchak)
* bug fix: (SETF MACRO-FUNCTION) clobbered macro-definitions before
package-lock violation was detected. (#660752)
* bug fix: the system can store different docstrings for a single
function under different names. (#661631, regression from
1.0.29.24)
* bug fix: source-locations of DEFGENERIC forms weren't getting
recorded properly. (#384801)
* bug fix: (COERCE X '(SIMPLE-VECTOR 5)) and similar coercions to
vectors of specified length could confuse the type derivation in
unsafe code. (#655872)
* bug fix: SB-POSIX:FORK now signals an error if an attempt to fork
with multiple Lisp threads running is made on every platform, not
just Darwin. (#451111)
* bug fix: SB-BSD-SOCKETS and SB-SIMPLE-STREAMS could leave stale
finalizers around when core was saved, which could cause
undefined behaviour when the core was reified.
* bug fix: Allow UNTRACE of functions that are no longer defined (#
667657, thanks to Attila Lendvai)
* bug fix: MAKE-ARRAY calls with invalid keyword argument lists now
signal a compile-time warning (#664373, thanks to Stas Boukarev)
New in version 1.0.43, 2010-09-30
Back to top
* incompatible change: FD-STREAMS no longer participate in the
serve-event event-loop by default. (#316072)
+ In addition to streams created by explicit calls to
MAKE-FD-STREAM this affects streams from CL:OPEN.
+ Streams from SOCKET-MAKE-STREAM still participate in
serve-event by default, but this is liable to change:
applications needing serve-event for socket streams should
explicitly request it using :SERVE-EVENTS T in the call.
* enhancement: SB-EXT:WORD type is provided for use with
SB-EXT:ATOMIC-INCF &co.
* enhancement: CLOS effective method functions and defclass slot
typechecking function now have debug names for use in backtraces
and profiles.
* enhancement: ASDF has been updated to version 2.004. (#605260,
thanks to Fare Rideau)
* enhancement: symbols are printed using fully qualified names in
several error and warning messages which are often associated
with package conflicts or mixups (#622789, thanks to Attila
Lendvai)
* bug fix: SB-BSD-SOCKETS:SOCKET-CONNECT was not thread safe. (#
505497, thanks to Andrew Golding)
* bug fix: reading /proc files on Linux works. (#425199)
* bug fix: DOTIMES accepted literal non-integer reals. (#619393,
thanks to Roman Marynchak)
* bug fix: WRITE-TO-STRING compiler macro binding special variable
names, breaking code that tried to write the value of a printer
control variable. (#581564, thanks to Stas Boukarev)
* bug fix: WRITE compiler macro did not handle output stream
designators correctly. (#598374, thanks to Stas Boukarev)
* bug fix: better availability of names of foreign functions in
backtraces on Linux. (#626962, thanks to Stas Boukarev)
* bug fix: scripting and build for Solaris and FreeBSD. (#615497, #
627581, thanks to Josh Elsasser and Jim Wise)
* bug fix: build fixes for OpenBSD -current and 4.8 (#615489, #
615492, thanks to Josh Elsasser)
* bug fix: using aliases for builtin classes as defmethod
specializers without adding DEFTYPEs for them works. (#618387)
* bug fix: timetravel by getrusage() no longer causes type-errors
during GC. (#544421)
* bug fix: legally dynamic-extent lists and vectors used as
initialization arguments to MAKE-ARRAY can be stack allocated. (#
586105)
* bug fix: inline-expansion creating references to dead
lambda-variables (#454681, thanks to Alexey Dejneka)
* bug fix: better error message for bogus numerical arguments to
RANDOM. (#598986, thanks to Stas Boukarev)
* bug fix: the compiler occasionally inlined references from
incompatible environments occurs. (#308951)
* bug fix: the compiler threw an error when trying to compile a
local function (labels or flet) known to take a specialized
complex argument. (not in launchpad, reported by sykopomp in #
lispgames)
* bug fix: package-locks failed to protect against compile-time
effects of DEFUN when the symbol previously had a macro
definition. (#576637)
* bug fix: spurious ignore warnings even given (DECLARE IGNORE) in
methods when parameter bindings mutated. (reported by Fare
Rideau; lp #611361)
* bug fix: workaround for compiler hang in ORDER-UVL-SETS (#308914)
* bug fix: evaluation in debugger REPL works using the global
context when in frames that do not have sufficient debug
information.
* bug fix: exceeding FD_SETSIZE limit now results in an sensible
error (#316068)
* bug fix: (SETF DOCUMENTATION) of a macro works properly. (#643958
, thanks to Stas Boukarev)
* bug fix: interrupt taking longer than the requested period caused
SLEEP to hang on Darwin. (#640516, thanks to Joe Lebroco for the
analysis)
New in version 1.0.42, 2010-08-29
Back to top
* build changes
+ Cross-compilation host is now specified to make.sh using
command-line argument --xc-host= instead of a
positional argument. (thanks to Daniel Herring)
+ Install location can be specified to make.sh using
command-line argument --prefix=. (#550889s, thanks to
Daniel Herring)
* optimization: The default implementation of
COMPUTE-DISCRIMINATING-FUNCTION does much less wasted work.
* enhancement: Explicit memory barrier operations are now available
for use by multithreaded code. See documentation for details.
* enhancement: Experimental support for threading on Linux/PPC.
* bug fix: RENAME-PACKAGE returns the package. (Thanks to Eric
Marsden)
* bug fix: EXPT signals an error if first argument is a zero and
second argument is a floating point zero. (#571581, thanks to
Roman Marynchak)
* bug fix: DEFTYPE signals an error for non-list lambda-lists. (#
576594, thanks to Roman Marynchak)
* bug fix: make ASDF-INSTALL compatible with the now-included
ASDF2. (#612998, reported by Phil Hargett; patch from Jim Wise)
New in version 1.0.41, 2010-07-30
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* optimization: validity of observed keyword initargs to
MAKE-INSTANCE is cached, leading to many fewer expensive calls to
COMPUTE-APPLICABLE-METHODS.
* optimization: in the (unoptimized) general method for
MAKE-INSTANCE on a CLASS argument, search for and call an
appropriate optimized ctor function if it exists.
* bug fix: WRITE always returns the correct value.
New in version 1.0.40, 2010-06-30
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* bug fix: readdir now works on :inode64 darwin builds (#592897)
* bug fix: Name conflicts between symbols passed as arguments to a
single call to IMPORT no longer add multiple symbols with the
same name to the package (detectable via DO-SYMBOLS).
* bug fix: support building without the dlshim on darwin x86 and
x86-64 (#533470).
* bug fix: TRACE :ENCAPSULATE NIL now works on ppc/linux.
New in version 1.0.39, 2010-05-29
Back to top
* bug fix: Backtrace from undefined function on x86 and x86-64 now
show the calling frame.
* bug fix: linkage-table entries on PPC now no longer overflow
their space allocation (potentially causing crashes if they are
written out of order).
* bug fix: Scrub control stack after scavenging in gencgc on
non-x86oid platforms, preventing the GC from seeing stale
pointers on the control stack in subsequent GCs (which would, and
does, break invariants).
* bug fix: 32-bit unicode external formats now work on big-endian
systems.
* bug fix: Literal characters with code points greater than about
32767 now work on PPC UNICODE builds.
* bug fix: Any noise left by SSE operations (sqrt and conversions)
in the high order bits are explicitly cleared out. In some
contrived situations, this could lead to wrong results in mixed
real/complex float arithmetic.
* bug fix: Fix function/macro redefinition warnings when building
with clisp. (#576787, thanks to Josh Elsasser)
* new platform: experimental support for ppc/openbsd (thanks to
Josh Elsasser).
* bug fix: Floating-point traps now work on ppc/linux.
New in version 1.0.38, 2010-04-30
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* incompatible change: Thread names are now restricted to
SIMPLE-STRINGs like for any other thread-related datastructure,
MUTEX, etc. (#547095)
* deprecation: the SB-QUEUE contrib was merged into the
SB-CONCURRENCY contrib module. New code should depend on
SB-CONCURRENCY, not SB-QUEUE.
* deprecation: SB-THEAD:GET-MUTEX was deprecated in favor of
SB-THREAD:GRAB-MUTEX.
* new contributed module: SB-CONCURRENCY is a new contrib; it's
supposed to contain additional data structures and tools for
concurrent programming; at the moment it contains a lock-free
queue, and a lock-free mailbox implementation.
* new feature: added SB-THREAD:GRAB-MUTEX; it's like the now
deprecated GET-MUTEX but takes &key rather than &optional
parameters. Also added :TIMEOUT argument to GRAB-MUTEX on
non-sb-lutex platforms like Linux and BSD.
* new feature: added SB-THREAD:TRY-SEMAPHORE, a non-blocking
variant of SB-THREAD:WAIT-ON-SEMAPHORE.
* new feature: SB-EXT:ATOMIC-DECF has been added as a companion to
SB-EXT:ATOMIC-INCF.
* new feature: a CANCEL-DEADLINE is associated with
DEADLINE-TIMEOUT conditions to defer the deadline for forever.
* enhancement: *STANDARD-OUTPUT*, *STANDARD-INPUT*, and
*ERROR-OUTPUT* are now bivalent.
* enhancement: errors from NO-APPLICABLE-METHOD and
NO-PRIMARY-METHOD now have a RETRY restart available to retry the
generic function call.
* enhancement: SB-BSD-SOCKET improvements
+ sockets and socket streams now have a more informative
printed representation based on the corresponding SOCKET-NAME
and SOCKET-PEERNAME.
+ SOCKET-MAKE-STREAM once more supports the :AUTO-CLOSE option.
(#540413)
+ SOCKET-CLOSE now accepts :ABORT argument, which is passed on
to CL:CLOSE when appropriate, and no longer disassociates the
stream from the socket if close failed. (#543951)
* improvements to the instrumenting profiler
+ new feature: report per-function GC overhead. (thanks to John
Fremlin)
+ optimization: counters no longer use locks for the overflow
mode.
+ bug fix: whenever a profiling counter wrapped into overflow
mode, it incurred an off-by-one miscount.
* enhancement: improved MAKE-HASH-TABLE documentation (#543473)
* enhancement: improved DEFMETHOD pretty-printing.
* enhancement: perform range reduction when arguments are too large
for x87's transcendentals (instead of returning 0). (#327192)
* enhancement: eliminate some spurious TYPE-WARNINGs. Should help
with some of CL-PPCRE's macros. (#570079)
* enhancement: our machine code is slightly less hostile to
valgrind on x86-64.
* enhancement: up-to-date versions of NetBSD-current are supported.
(Thanks to Robert Swindells and Aleksej Saushev)
* bug fix: correct restart text for the continuable error in
MAKE-PACKAGE.
* bug fix: a rare case of startup-time page table corruption.
* bug fix: a semaphore with multiple waiters and some of them
unwinding due to timeouts could be left in an inconsistent state.
* bug fix: fix typo in "Reporting Bugs" section of the manual (#
520366)
* bug fix: misoptimization of multiplication by one in
(SB-C::FLOAT-ACCURACY 0) policies.
* bug fix: miscounts in SB-PROFILE.
* bug fix: Fix lost wakeup bug between SB-THREAD:CONDITION-WAIT and
CONDITION-NOTIFY on Linux. See threads "lost wakeup in
condition-wait / condition-notify" (Feb 2010) and
"Condition-Wait, Deadline handler, waking up itself" (March 2010)
for further details.
* bug fix: allow forward FIND and POSITION on lists to elide
checking :END against length of the list if the element is found
before the specified END is reached. (thanks to Alec Berryman, #
554385)
* bug fix: errors signalled during package graph modification no
longer block FIND-SYMBOL and FIND-PACKAGE in other threads. (#
511072)
* bug fix: SB-POSIX build was broken when SBCL was compiled without
the :SB-DOC feature. (#552564)
* bug fix: SB-INTROSPECT build issues on GENGC/PPC. (#490490)
* bug fix: more robust runtime executable path detection. (#375549)
* bug fix: GCD always returns positive values. (#413680)
* bug fix: Converting division to multiplication by reciprocal
handles denormals.
* bug fix: We were too eager in eliding range reduction tests on
x87. The maximal magnitude is 2^63, not 2^64.
* bug fix: Transforms for TRUNCATE don't die when the result is
completely ignored anymore.
* bug fix: Maybe restore buildability on Alpha.
* bug fix: READ-BYTE isn't inline anymore, fixing weird streams
failures. (#569404)
* bug fix: RANDOM-STATE can be printed readably again.
* bug fix: Unreadable objects were sometimes printed like #<\nFoo>.
* bug fix: Using EQL with non-constant values of constant type
(e.g. EQL types) could result in type mismatches during
compilation.
New in version 1.0.37, 2010-03-28
Back to top
* enhancement: Backtrace from THROW to uncaught tag on x86oids now
shows stack frame thrown from.
* enhancement: WITH-COMPILATION-UNIT :POLICY allows restricting
changes to compiler optimization qualities inside dynamic extent
of its body.
* enhancement: LOAD-LOGICAL-PATHNAME-TRANSLATIONS can be used to
load translations from SYS:SITE;.TRANSLATIONS.NEWEST
(thanks to Michael Weber)
* optimization: SLOT-VALUE and (SETF SLOT-VALUE) take advantage of
constraint propgation, allowing better compilation eg. when used
to access structures with WITH-SLOTS. (#520366)
* optimization: the compiler is now more aware of the type of the
underlying storage vector for multidimensional simple arrays
resulting in better code for accessing such arrays.
* optimization: passing NIL as the environment argument to TYPEP no
longer inhibits optimizing it. (#309788)
* optimization: more efficient register usage when handling
single-float arguments on x86-64. (thanks to Lutz Euler)
* optimization: ADJUST-ARRAY and STABLE-SORT on vectors no longer
use pre-allocated temporary vectors. (#496249)
* bug fix: Fix compiler error involving MAKE-ARRAY and IF forms in
:INITIAL-CONTENTS. (#523612)
* bug fix: FUNCTION-LAMBDA-EXPRESSION lost declarations from
interpreted functions. (#524707)
* bug fix: bogus style warnings from certain (SETF SLOT-VALUE) and
WITH-SLOTS usages during compilation.
* bug fix: SB-C::CLASS-INFO now prints correctly. (#514762)
* enhancement: Can now build with ud2 instead of int3 as trap
instruction on all x86oid platforms with :UD2-BREAKPOINTS target
feature.
* bug fix: Breakpoints now work when using ud2 instead of int3 as
trap instruction (tested on x86oid linux with ud2-breakpoints).
* bug fix: slam.sh now works on win32.
* bug fix: better differences of numeric types. (#309124)
* bug fix: arrays declared intersection and union types can have
their upgraded element type derived. (#316078)
* bug fix: SB-SPROF allocation profiling for all threads failed to
profile threads started during profiling. (#472499)
* bug fix: SB-INTROSPECT test failure when building without SB-EVAL
feature. (#535658)
* bug fix: SB-CLTL2:DECLARATION-INFORMATION did not take
SB-EXT:RESTRICT-COMPILER-POLICY into account. (#313337)
* bug fix: Comma inside a backquoted array or structure resulted in
nonsense values instead of signaling an error. (#309093)
* bug fix: Spurious unused variable warning in a DEFSTRUCT edge
case. (#528807)
* bug fix: More consistent warnings and notes for ignored
DYNAMIC-EXTENT declarations (#497321)
* bug fix: FIND and POSITION on lists did not check sequence bounds
properly and failed to detect circular lists (#452008)
* bug fix: leakage from ~/.asdf-install into the ASDf-INSTALL
contrib build (#538974)
* bug fix: LOOP OF-TYPE VECTOR compile-time error. (#540186)
* bug fix: SIGNAL SB-SYS:INTERACTIVE-INTERRUPT before entering the
debugger due to it, so that handlers can run.
* bug fix: reparsing undefined types if they have become defined
since parsing. (#309128)
* bug fix: missing &REST type in a proclamation for a function with
both &REST and &KEY in lambda-list caused miscompilation (#458354
)
* bug fix: WHO-CALLS information for source-transformed and
compiler-macro expanded calls (#542174)
* bug fix: more accurate WHO-MACROEXPANDS information; point into
rather than just at toplevel form.
New in version 1.0.36, 2010-02-28
Back to top
* new feature: SB-EXT:TYPEXPAND-1, SB-EXT:TYPEXPAND, and
SB-EXT:TYPEXPAND-ALL behave exactly like their MACROEXPAND
counterparts but work on type specifiers.
* new feature: SB-EXT:DEFINED-TYPE-NAME-P returns whether a symbol
is known to name a type specifier.
* new feature: SB-EXT:VALID-TYPE-SPECIFIER-P returns whether a
given type specifier is valid where "valid" basically means
"would be accepted as second argument of TYPEP".
* new feature: SB-INTROSPECT:FUNCTION-TYPE takes a
function-designator and returns the function's declared, or
derived FTYPE.
* new feature: SB-POSIX now supports accessing the d_ino member of
dirent structures. (Thanks to Philipp Marek and Pierre THEIRRY)
* new feature: The function SB-EXT:SEED-RANDOM-STATE has been added
to provide for seeding a RANDOM-STATE object with user-provided
data or from the operating system's PRNG. Also,
(MAKE-RANDOM-STATE T) will attempt to initialize the returned
state from the operating system's PRNG where possible. (Thanks to
Fare Rideau; launchpad bug #310116)
* bug fix: Fix SB-SIMPLE-STREAMS:READ-VECTOR to correctly set the
FILE-POSITION of the stream being read from. (launchpad bug #
491087)
* bug fix: Fix grammar and style issues for the docstrings of
printer-related variables and functions. (Thanks to mon_key;
launchpad bug #518696)
* bug fix: Fix compilation on chenygc platforms. Thanks to Larry
Valkama and Bruce O'Neel.
* bug fix: SB-THREAD:CONDITION-WAIT sometimes signaled a deadline
twice in a row even though a handler defered the deadline long
into the future. (#512914)
* bug fix: A deadline handler was run without interrupts enabled
for a deadline signaled within SB-THREAD:CONDITION-WAIT. That
could result in infinitely spinning, non-killable threads.
* bug fix: Backtrace from internal-errors on x86-64 os x was
truncated before reaching the erring stack frame.
* bug fix: Fix type derivation for EXPT when raising a fixnum to a
real power. (launchpad bug #525949)
* bug fix: Fix SB-EXT:GENERATION-* accessors for generations > 0 on
GENCGC platforms. (launchpad bug #529014)
* bug fix: More robust checks for invalid DEFMETHOD argument
specializers. (launchpad bug #525916)
* bug fix: Fix building on Darwin when sysctl is not in the user's
PATH. (Thanks to Robert Goldman)
New in version 1.0.35, 2010-01-31
Back to top
* optimization: ROUND with a single single-float or double-float
argument is properly inlined when possible.
* optimization: Slightly better code is generated for integer<->
float conversions and for single-float<->double-float conversions
on x86-64.
* optimization: SB-ROTATE-BYTE:ROTATE-BYTE now generates more
efficient code for 32-bit and 64-bit rotations on x86-64.
* bug fix: The install script changes the ownership of directories
as well as files for contrib modules using asdf. (thanks to
Eugene Ossintsev; launchpad bug #508485)
* bug fix: TRUNCATE with a single single-float or double-float
argument is properly inlined when possible. (launchpad bug #
489388)
* bug fix: Passing a rotation count of zero to
SB-ROTATE-BYTE:ROTATE-BYTE no longer causes a compiler error on
x86 and ppc.
* bug fix: GET-MACRO-CHARACTER bogusly computed its second return
value always relative to *READTABLE* rather than the passed
argument.
New in version 1.0.34, 2009-12-30
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* minor incompatible change: threading support is now enabled by
default on x86[-64] Linux.
* enhancement: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST now also works on
most builtin types.
* enhancement: Errors during compile-time-too processing (i.e.
EVAL-WHEN) are now caught and reported just like errors during
macroexpansion.
* enhancement: SB-POSIX now provides access to tcdrain(), tcflow(),
tcflush(), tcgetsid(), and tcsendbreak(). (thanks to Jerry James)
* enhancement: ASDF systems can now depends on SB-QUEUE.
* fixes and improvements related to Unicode and external formats:
+ bug fix: error handling and restart usage in the ucs-2
external format has been improved.
+ there is now an implementation of the ucs-4 external format.
+ the utf-16 and utf-32 external formats are supported.
* bug fix: SB-POSIX wrapper for putenv no longer tries to put lisp
strings in the environment. setenv() and unsetenv() are also
provided. (reported by Fare Rideau; launchpad bug #460455)
* bug fix: LOAD of both .fasl and .FASL type files now forces
fasl-style loading. This ensures sensible errors for .FASL files
from other implementations on case-insensitive filesystems.
(reported by Willem Broekema; launchpad bug #489417)
* bug fix: #p"\\\\" can now be read without error on Win32.
(reported by Willem Broekema; launchpad bug #489698).
* bug fix: some minor code rearrangements to reenable warning-free
building from CMUCL (reported by xme@gmx.net; launchpad bug #
491104)
* bug fix: PRINT-OBJECT for clos instances respects the right
margin when pretty printing
* bug fix: FIND-PACKAGE & DEFPACKAGE were not thread safe.
(reported by Attila Lendvai)
New in version 1.0.33, 2009-11-27
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* new port: support added for x86-64 NetBSD. (thanks to Aymeric
Vincent)
* improvement: support O_LARGEFILE access to files larger than 2GB
on x86-64/linux. (thanks to Daniel Janus; launchpad bug #453080)
* new feature: SB-INTROSPECT:WHO-SPECIALIZES-DIRECTLY to get a list
of definitions for methods specializing on the passed class
itself.
* new feature: SB-INTROSPECT:WHO-SPECIALIZES-GENERALLY to get a
list of definitions for methods specializing on the passed class
itself, or on subclasses of it.
* new build flag: :sb-xref-for-internals; SBCL will collect xref
information about itself during the build (e.g. for M-? in
Slime), if this flag is enabled in
customize-target-features.lisp. This will increase the core size
by about 5-6mb, though, so it's mostly interesting to SBCL
developers.
* new feature: various GENCGC tuning parameters have been
experimentally documented and exported from SB-EXT. See
documentation for details.
* fixes and improvements related to Unicode and external formats:
+ the Unicode character database has been upgraded to the
Unicode 5.2 standard, giving names and properties to a number
of new characters, and providing a few extra characters with
case transformations.
+ improvement: restarts for providing replacement input/output
on coding errors for fd-stream external formats.
+ improvement: where : is a keyword corresponding to
an external format the system supports, it is now possible to
specify (: :replacement ) as an external
format which will automatically substitute on
encoding or decoding errors for streams and for
STRING-TO-OCTETS and its inverse. (launchpad bug #317072)
+ improvement: the file streams underlying the standard streams
(such as *STANDARD-INPUT*, *TERMINAL-IO*) are opened with an
external format which uses the replacement mechanism to
handle encoding errors, preventing various infinite error
chains and unrecoverable I/O confusion.
+ minor incompatible change: the utf-8 external format now
correctly refuses to encode Lisp characters in the surrogate
range (char-codes between #xd800 and #xdfff).
+ fix a typo preventing conversion of strings into octet
vectors in the latin-2 encoding. (reported by Attila Lendvai;
launchpad bug #471689)
+ fix a bug in the octet multibyte handling of decoding errors
and the USE-VALUE restart. (launchpad bug #314939)
+ fix the bug underlying the expected failure in the
FORCE-END-OF-FILE restart on fd-stream decoding errors.
+ fix a bug in the ATTEMPT-RESYNC fd-stream decoding restart
when the error is near the end of file.
+ fix a double-error case in unibyte octet conversions, when
the first use of USE-VALUE is ignored.
+ fix bugs in handling of undefined code points in unibyte
encodings.
+ fix LISTEN (and consequent hangs in READ-CHAR-NO-HANG) on
bivalent streams after an UNREAD-CHAR.
* enhancement: SB-INTROSPECT:ALLOCATION-INFORMATION also reports if
the object is allocated in a boxed region of dynamic space.
* enhancement: SB-POSIX:FORK now signals an error if an attempt to
fork with multiple Lisp threads running is made, instead of going
ahead with unpredictable consequences. (reported by Leslie
Polzer)
* bug fix: uses of slot accessors on specialized method parameters
within the bodies of SLOT-VALUE-USING-CLASS methods no longer
triggers a type error while finalizing the class. This fix may
cause classes with slot accessors to be finalized later than
previously. (reported by Lars Rune Nostdal; launchpad bug #473699
)
* bug fix: restore buildability on the MIPS platform. (regression
from 1.0.30.38, reported by Samium Gromoff)
* bug fix: inspecting closures is less likely to fail with a type
error.
* bug fix: no timer starvation when setting the system clock back.
(launchpad bug #460283)
* bug fix: WITH-STANDARD-IO-SYNTAX now binds
*PRINT-PPRINT-DISPATCH* to the standard pprint dispatch table as
specified by CLHS.
* bug fix: give CLISP a hint about a type declaration to enable it
to build the cross-compiler without warnings. (thanks to Josh
Elasser; launchpad bug #396597)
* bug fix: correctly dump literal objects in defaulting forms of
arglists. (reported by Attila Lendvai; launchpad bug #310132)
* bug fix: distinguish in type specifiers between arrays that might
be complex and arrays that are definitely complex. (launchpad bug
#309129)
* bug fix: SUBTYPEP knows that the SYMBOL type is not SUBTYPEP the
KEYWORD type. (reported by Levente Meszaros; launchpad bug #
485972)
* bug fix: setting the value of a symbol-macro within a method in
the presence of type declarations works properly again. (reported
by Iban Hatchondo; launchpad bug #485019)
New in version 1.0.32, 2009-10-25
Back to top
* optimization: faster FIND and POSITION on strings of unknown
element type in high SPEED policies. (thanks to Karol Swietlicki)
* optimization: faster CONCATENATE 'STRING in low SPEED policies
(reported by David Vazquez)
* improvement: better error signalling for bogus parameter
specializer names in DEFMETHOD forms (reported by Pluijzer)
* bug fix: DELETE-FILE once again works on logical pathnames
(regression since 1.0.30.49)
* bug fix: LOGICAL-PATHNAME signals a TYPE-ERROR if pathspec is
specified incorrectly.
* bug fix: redefinition of a class via DEFCLASS without
:DEFAULT-INITARGS removes previous default initargs (reported by
Lars Rune Nostdal and Samium Gromoff)
* bug fix: correct WHO-CALLS information for inlined lambdas with
complex lambda-lists. (reported by Peter Seibel)
* bug fix: SAVE-LISP-AND-DIE option :SAVE-RUNTIME-OPTIONS did not
work correctly when starting from an executable core without
saved runtime options (reported by Fare Rideau, thanks to Zach
Beane)
* bug fix: (SETF SLOT-VALUE) signalled a warning which should have
been an optimization note instead. (reported by Martin Cracauer)
* bug fix: WITH-SLOTS did not work with THE forms. (thanks to David
Tolpin)
* bug fix: Have RUN-PROGRAM with :INPUT T only run the subprocess
in a new process group if it doesn't need to share stdin with the
sbcl process. (thanks to Leslie Polzer)
* bug fix: SATISFIES could be misoptimized to refer to a local
function. (reported by Stanislaw Halik)
New in version 1.0.31, 2009-08-27
Back to top
* improvement: stack allocation is should now be possible in all
nested inlining cases: failure to stack allocate when equivalent
code is manually open coded is now considered a bug.
* improvements related to Unicode:
+ the Unicode character database has been upgraded to the
Unicode 5.1 standard, giving names and properties to a number
of new characters, and providing a few extra characters with
case transformations.
+ the system now recognizes and produces names for Unicode
Hangul syllable characters.
+ the EBCDIC-US external-format is now supported for octet
operations (as well as for stream operations).
* new feature: experimental :EMIT-CFASL parameter to COMPILE-FILE
can be used to output toplevel compile-time effects into a
separate .CFASL file.
* optimization: COERCE to VECTOR, STRING, SIMPLE-STRING and
recognizable one-dimenstional subtypes of ARRAY is upto 70%
faster when the coercion is actually needed.
* optimization: TRUNCATE on known single- and double-floats is upto
25% faster.
* optimization: division of floating point numbers by constants
uses multiplication by reciprocal when an exact reciprocal
exists.
* optimization: multiplication of single- and double-floats floats
by constant two has been optimized.
* optimization: ARRAY-IN-BOUNDS-P is resolved at compile-time when
sufficient type information is available. (thanks to Leslie
Polzer)
* optimization: SLOT-VALUE and (SETF SLOT-VALUE) with constant slot
names on known structure objects are as efficient as defstruct
generated accessors.
* optimization: unused vector creation can now be optimized away.
* improvement: ASDF systems can now depends on SB-INTROSPECT.
* improvement: a STYLE-WARNING is signalled when a generic function
clobbers an earlier FTYPE proclamation.
* improvement: the compiler is able to track the effective type of
generic function across method addition and removal even in the
absence of an explicit DEFGENERIC.
* improvement: DESCRIBE now reports on symbols naming undefined but
assumed or declared function as well.
* improvement: recompilation of systems using SB-GROVEL now works
(thanks to Leslie Polzer)
* improvements to SB-CLTL2 (thanks to Larry D'Anna):
+ functions DECLARATION-INFORMATION, PARSE-MACRO, and ENCLOSE
have been documented.
+ AUGMENT-ENVIRONMENT and DEFINE-DECLARATION have been
implemented.
+ DECLARATION-INFORMATION now supports declaration name
DECLARATION as well as user defined declaration names.
+ VARIABLE-INFORMATION is now aware of alien variables.
* improvement: improved address space layout on OpenBSD (thanks to
Josh Elsasser)
* improvement: pretty-printing of various Lisp forms has been
improved (thanks to Tobias Rittweiler)
* bug fix: calls to DECODE-FLOAT and INTEGER-DECODE-FLOAT whose
value was unused were deleted in safe code. (reported by John
Fremlin)
* bug fix: a failing AVER compiling certain MAKE-ARRAY forms.
(reported by James Wright)
* bug fix: some out-of-line array predicates were missing (reported
by Stelian Ionescu)
* bug fix: a failing AVER in CONVERT-MV-CALL has been fixed.
(thanks to Larry D'Anna)
* bug fix: a failing AVER in %ALLOCATE-CLOSURES conversion has been
fixed (thanks to Larry D'Anna)
* bug fix: SLEEP supports times over 100 million seconds on long on
OpenBSD as well. (reported by Josh Elsasser)
* bug fix: DELETE-FILE on streams no longer closes the stream with
:ABORT T, leading to possible attempts to delete the same file
twice. See docstring on DELETE-FILE for details. (reported by
John Fremlin)
* bug fix: DELETE-FILE once again deletes the file named by the
pathname designator argument, rather than its truename. (reported
by Luis Oliveira)
* bug fix: the low-level debugger had 32-bit assumptions and was
missing information about some array types. (thanks to Luis
Oliveira)
* bug fix: moderately complex combinations of inline expansions
could be miscompiled if the result was declared to be dynamic
extent.
* bug fix: on x86, SAP-REF of sizes greater than 8 bits with
offsets of the form (+ ) were miscompiled
under certain circumstances.
* bug fix: in some cases no compiler note about failure to stack
allocate was emitted, even if the objects were in fact heap
allocated.
* bug fix: minor violation of "otherwise inaccessible" rule for
stack allocation could cause objects users might reasonably
expect to be heap allocated to be stack allocated.
* bug fix: DESCRIBE signalled an error for generic functions under
certain circumstances. (thanks to Leslie Polzer)
* bug fix: Fixed spelling of an error message.
New in version 1.0.30, 2009-07-17
Back to top
* minor incompatible change: SB-THREAD:JOIN-THREAD-ERROR-THREAD and
SB-THREAD:INTERRUPT-THREAD-ERROR-THREAD have been deprecated in
favor of SB-THREAD:THREAD-ERROR-THREAD.
* new contrib module: SB-QUEUE provides thread-safe lockless FIFO
queues.
* new feature: docstrings for local and anonymous functions are no
longer discarded. (thanks to Leslie Polzer)
* new feature: SB-THREAD:SYMBOL-VALUE-IN-THREAD provides access to
symbol values in other threads.
* new feature: SB-INTROSPECT:ALLOCATION-INFORMATION provides
information about object allocation.
* optimization: division of a real float by a complex float is
implemented with a specialised code sequence.
* optimization: MAKE-INSTANCE with non-constant class-argument but
constant keywords is an order of magnitude faster.
* optimization: MAKE-INSTANCE with constant keyword arguments is
x2-4 faster in the presence of :AROUND or non-standard primary
INITIALIZE-INSTANCE methods, and similarly for non-standard
metaclass classes as long as there are no methods additional on
MAKE-INSTANCE.
* optimization: more efficient type-checks for FIXNUMs when the
value is known to be a signed word on x86 and x86-64.
* optimization: compiler now optimizes (EXPT -1 INTEGER), (EXPT
-1.0 INTEGER), and (EXPT -1.0d0 INTEGER) into an ODDP test.
(thanks to Stas Boukarev and Paul Khuong)
* optimization: compiler is smarter about delegating argument type
checks to callees.
* optimization: several character functions are now compiled
somewhat more efficiently. (reported by Lynn Quam)
* optimization: the compiler now derives simple types for
LOAD-VALUE-FORMs.
* improvement: less unsafe constant folding in floating point
arithmetic, especially for mixed complex/real -float operations.
* optimization: constant double and single floats are stored in
native unboxed format on x86[-64].
* optimization: smarter code for arithmetic operations with
constant floats, complex floats, or integers on x86[-64].
* optimization: smarter code for conjugate/multiplication of float
complexes and abs/negate of floats on x86-64.
* optimization: more efficient complex float and real float
operations on x86-64.
* improvement: complex float division is slightly more stable.
* improvement: DESCRIBE output has been reworked to be easier to
read and contains more pertinent information.
* improvement: failure to provide requested stack allocation
compiler notes provided in all cases (requested stack allocation
not happening without a note being issued is now considered a
bug.)
* bug fix: SB-POSIX exports the documented types and functions
FILE-DESCRIPTOR and FILENAME, and also the corresponding
-DESCRIPTOR types. (reported by "abhi")
* bug fix: on 64 bit platforms FILL worked incorrectly on arrays
with upgraded element type (COMPLEX SINGLE-FLOAT), regression
from 1.0.28.55. (thanks to Paul Khuong)
* bug fix: looping around HANDLER-CASE could silently consume stack
space on each iteration. (reported by "foobar")
* bug fix: better error signalling when calls to functions seeking
elements from lists (eg. ADJOIN) are compiled with both :TEST and
:TEST-NOT. (reported by Tobias Rittweiler)
* bug fix: regressions in DIRECTORY from 1.0.28.61: pattern
matching of directory components now works as it used to.
(various prolems reported by Michael Becker, Gabriel Dos Reis,
Cyrus Harmon, and Harald Hanche-Olsen)
* bug fix: :PTY option in RUN-PROGRAM was broken with stream
arguments. (reported by Elliot Slaughter, thanks to Stas
Boukarev)
* bug fix: bogus undefined variable warnings from fopcompiled
references to global variables. (thanks to Lars Rune Nostdal)
* bug fix: foreign function names should now appear in backtraces
on FC6 as well. (reported by Tomasz Skutnik and Tobias
Rautenkranz)
* bug fix: SETF compiler macro documentation strings are not
discarded anymore.
* bug fix: GENTEMP is now unaffected by pretty printer dispatch
table. (thanks to Alex Plotnick)
* bug fix: SLEEP accepts large integer arguments, truncating them
to SIGNED-WORD on the assumption that sleeping for 68 years is
sufficient for anyone. (reported by Leslie Polzer, thanks to Stas
Boukarev)
* bug fix: compiler notes for expensive slot type checks could be
emitted at runtime MAKE-INSTANCE calls. (reported by Samium
Gromoff)
New in version 1.0.29, 2009-06-04
Back to top
* IMPORTANT: bug database has moved from the BUGS file to Launchpad
https://bugs.launchpad.net/sbcl Bugs can be reported directly
there, or by sending email to sbcl-bugs@lists.sourceforge.net (no
subscription required.)
* minor incompatible change: under weak type checking policy
integer types are weakened less aggressively.
* minor incompatible change: SAVE-LISP-AND-DIE :TOPLEVEL function
is now allowed to return, which causes SBCL to quit with exit
status 0. Previously if the function returned with a small
integer return value, that value was accidentally reused as the
exit status.
* new feature: SB-EXT:DEFINE-HASH-TABLE-TEST allows defining new
arguments to MAKE-HASH-TABLE :TEST, and MAKE-HASH-TABLE has been
extended with :HASH-FUNCTION argument. Refer to user manual for
details.
* new feature: SB-EXT:DEFGLOBAL macro allows defining global
non-special variables.
* new feature: SB-EXT:GET-TIME-OF-DAY provides access to seconds
and microseconds since the Unix epoch on all platforms.
* new feature: SB-EXT:ALWAYS-BOUND proclamation inhibits
MAKUNBOUND, and allows the compiler to safely elide boundedness
checks for special variables.
* new feature: SB-EXT:GLOBAL proclamation inhibits SPECIAL
proclamations for the symbol, prohibits both lexical and dynamic
binding. This is mainly an efficiency measure for threaded
platforms, but also valueable in expressing intent.
* new feature: UNC pathnames are now understood by the system on
Windows.
* optimization: the compiler uses a specialized version of FILL
when the element type is know in more cases, making eg.
(UNSIGNED-BYTE 8) case almost 90% faster.
* optimization: accesses to potentially non-simple arrays where
element type is known are 50% faster.
* optimization: compiler now generates faster array typechecking
code.
* optimization: ARRAY-DIMENSION is now faster for multidimensional
and non-simple arrays.
* optimization: multidimensional array accesses in the absence of
type information regarding array rank are approximately 10%
faster due to open coding of ARRAY-RANK.
* optimization: result of (FILL (MAKE-ARRAY ...) ...) and (REPLACE
(MAKE-ARRAY ...) ...) can be stack allocated if the result of
MAKE-ARRAY form can be.
* optimization: result of call to VECTOR can now be stack
allocated.
* optimization: MAKE-ARRAY with :INITIAL-CONTENTS is now vastly
faster as long as the resulting array is one-dimensional and has
a known element type. In particular, :INITIAL-CONTENTS (LIST ...)
where the length of the list matches the known length of the
vector does not allocate the list as an intermediate step. Ditto
for VECTOR and simple backquoted forms.
* optimization: MAKE-ARRAY can now stack allocate in the presence
of :INITIAL-CONTENTS and :INITIAL-ELEMENT as long as the result
has a known element type, and is known to be simple and one
dimensional.
* improvement: SBCL now emits a compiler note where stack
allocation was requested but could not be provided (not in all
cases, unfortunately)
* improvement: better MACHINE-VERSION responses. (thanks to Josh
Elsasser)
* improvement: pretty-printing loop has been implemented properly.
(thanks to Tobias Rittweiler)
* documentation: CLOS slot typechecing policy has been documented.
* bug fix: FILE-AUTHOR no longer signals an error on Windows.
* bug fix: SB-SPROF could be foiled by foreign code not have a
frame pointer, leading to memory faults. (thanks to Bart Botta)
* bug fix: better floating point exception handling on x86/OpenBSD.
(thanks to Josh Elsasser)
* bug fix: exit status from QUIT when called under --script was
lost (reported by Hubert Kauker)
* bug fix: MAKE-ARRAY for non-zero :INITIAL-ELEMENT always used the
same implementation of FILL to initialize the array, even if a
more efficient one was available (reported by Stas Boukarev,
thanks to Paul Khuong)
* bug fix: potential miscompilation of array stack allocation on
x86 and x86-64. (reported by Time Tossavainen)
* bug fix: some forms of AND, OR, and COND resulted in expansions
that could result in their subforms being treated as top level
forms. (reported by James Knight)
* bug fix: On x86/x86-64 alien functions declared to return
integers shorter than a machine register could leave garbage in
the high bits of the result register (bug 316325).
* bug fix: disable address space randomization Linux/x86-64 as
well, not just x86-64. (reported by Ken Olum)
* bug fix: Attempting to DEREF an (ALIEN (* T)) would produce a
WARNING and generate incorrect code.
* bug fix: #201; type inference for CONS and ARRAY types could
derive wrong results in the presence of eg. RPLACA or
ADJUST-ARRAY.
* bug fix: special variables with a proclaimed specific subtype of
FUNCTION could not be assigned to or bound with PROGV. (reported
by Lorenz Mosenlechner)
* bug fix: the value of CL:- in the inspector was the previous
expression evaluated rather than the expression being evaluated.
* bug fix: constants can no longer be locally declared special.
* bug fix: signals delivered to threads started from foreign land
(read: directly by pthread_create, not by MAKE-THREAD) are
redirected to a Lisp thread by blocking all signals and
resignalling.
* bug fix: SHARED-INITIALIZE initialized unbound :ALLOCATION :CLASS
slots from :INITFORM, if any.
New in version 1.0.28, 2009-04-30
Back to top
* a number of bugs in cross-compilation have been fixed, with the
ultimate result that building under (at least) clisp should be
much more reliable.
* minor incompatible changes: echo-streams now propagate
unread-char to the underlying input stream, and no longer permit
unreading more than one character.
* improvement: on x86/x86-64 Lisp call frames now have the same
layout as C frames, allowing for instance more reliable
backtraces.
* improvement: the debugger REPL can now reference lexical
variables by name directly for code compiled with (DEBUG 3).
* improvement: errors from malformed declarations now have better
source paths associated with them. (thanks to Tobias Rittweiler)
* optimization: faster local calls on x86/x86-64
* bug fix: some error messages for out-of-bound array indexes
confused the index and the bound. (thanks to Stas Boukarev)
* bug fix: pretty printing malformed DEFPACKAGE forms (thanks to
Sidney Markowitz)
* bug fix: running regressions tests in shells without OSTYPE set
now works. (reported by Harald Hanche-Olsen)
* bug fix: more robust static space exhaustion signalling from
MAKE-STATIC-VECTOR (thanks to Daniel Lowe)
* bug fix: (SETF DOCUMENTATION) for anonymous function now throws
the docstring away instead of storing it under names such as
(LAMBDA (X)). (reported by Leslie Polzer)
* bug fix: timers could go off in the wrong order, be delayed
indefinitely (thanks to Ole Arndt for the patch)
* bug fix: RESTART-FRAME and RETURN-FROM-FRAME stack corruption
* bug fix: the discriminating function for PRINT-OBJECT no longer
preserves potentially-invalid effective methods in its cache.
* bug fix: SB-INTROSPECT:FIND-DEFINITION-SOURCE now works with
funcallable instances as well (thanks to Paul Khuong)
* bug fix: using RUN-PROGRAM does not interfere with SB-POSIX:WAIT,
SB-POSIX:WAITPID and their C equivalents.
* bug fix: RUN-PROGRAM does not crash on Darwin when stressed.
New in version 1.0.27, 2009-04-02
Back to top
* new port: support added for x86-64 OpenBSD. (thanks to Josh
Elsasser)
* new port: support added for x86-64 Solaris. (thanks to Alex
Viskovatoff)
* improvement: the system either recovers from stack exhaustion or
dies properly as opposed to leaving the user uncertain of whether
the handler trampled on some random memory next to the stack or
having to rely on --lose-on-corruption (which is still a good
idea to use in production because stack exhaustion can happen in
signal handlers which will likely lead to hangs.)
* bug fix: fix gc related interrupt handling bug on ppc (regression
from 1.0.25.37, reported by Harald Hanche-Olsen)
* bug fix: work around signal delivery bug in darwin (regression
from 1.0.25.44, reported by Sidney Markowitz)
* bug fix: fix ERROR leaking memory (reported by David Thompson)
New in version 1.0.26, 2009-03-01
Back to top
* incompatible change: an interruption (be it a function passed to
INTERRUPT-THREAD or a timer function) runs in an environment
where interrupts can be enabled. The interruption can use
WITH-INTERRUPTS or WITHOUT-INTERRUPTS as it sees fit. Use
WITHOUT-INTERRUPTS to avoid nesting of interruptions and
potentially running out of stack. Keep in mind that in the
absence of WITHOUT-INTERRUPTS some potentially blocking operation
such as acquiring a lock can enable interrupts.
* incompatible change: GC-OFF and GC-ON are removed, as they were
always unsafe. Use WITHOUT-GCING instead.
* new feature: runtime option --disable-ldb
* new feature: runtime option --lose-on-corruption to die at the
slightest hint of possibly non-recoverable errors: running out of
memory, stack, alien stack, binding stack, encountering a memory
fault, etc. In the absence of --lose-on-corruption a warning is
printed to stderr.
* enhancement: detect binding stack exhaustion
* enhancement: detect alien stack exhaustion on x86/x86-64
* improvement: generally more stable and reliable interrupt
handling
* improvement: there is a per thread interruption queue,
interruptions are executed in order of arrival
* improvement: a repeating timer reschedules itself when the it has
finished, but expiration times are spaced equally. If an
expiration time is in the past it will trigger after a short
grace period that may give a chance to other things to run.
* optimization: slightly faster gc on multithreaded builds
* optimization: faster WITHOUT-GCING
* bug fix: when JOIN-THREAD signals an error, do it when not
holding important locks so that the debugger/handler doesn't
produce recursive errors or deadlock.
* bug fix: real-time signals are not used anymore, so no more
hanging when the system wide real-time signal queue gets full.
* bug fix: INTERRUPT-THREAD on a dying thread could produce memory
fault.
* bug fix: finalizers, gc hooks never run in a WITHOUT-INTERRUPTS
* bug fix: fix random memory faults related to interrupts on alpha
* bug fix: fix random memory faults related to interrupts on sparc
* bug fix: fix deadlocks related to starting threads
* bug fix: fix deadlines on locks on futex platforms
* bug fix: restore errno in signal handlers
* bug fix: fix deadlocks related to hash tables
* bug fix: fix deadlocks in pcl
New in version 1.0.25, 2009-02-03
Back to top
* incompatible change: SB-INTROSPECT:FUNCTION-ARGLIST is
deprecated, to be removed later. Please use
SB-INTROSPECT:FUNCTION-LAMBDA-LIST instead.
* new feature: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST allows retrieval
of DEFTYPE lambda lists. (thanks to Tobias Rittweiler)
* enhancement: MUTEX-VALUE is to be superseded by MUTEX-OWNER that
has a better name and does not return values so stale on
multiprocessor systems. Also, HOLDING-MUTEX-P was added for about
the only sane usage of MUTEX-OWNER.
* improvement: unithread builds keep track of MUTEX-VALUE.
* improvement: reading from a TWO-WAY-STREAM does not touch the
output stream anymore making it thread safe to have a concurrent
reader and a writer, for instance, in a pipe.
* improvement: GET-SETF-EXPANDER avoids adding bindings for
constant arguments, making compiler-macros for SETF-functions
able to inspect their constant arguments.
* improvement: COMPILE-FILE reports times with millisecond accuracy
(thanks to Luis Oliveira)
* optimization: CHAR-CODE type derivation has been improved, making
TYPEP elimination on subtypes of CHARACTER work better. (reported
by Tobias Rittweiler, patch by Paul Khuong)
* bug fix: setting alien structure fields of type struct by value
now computes the right offset for the memory copy.
* bug fix: compilation problem involving inlined calls to aliens
with result type VOID. (reported by Ken Olum)
* bug fix: #235a; sequential inline expasion in different policies
no longer reuses the functional from the previous expansion site.
* bug fix: DEFTYPE no longer breaks on bodies consisting of a
single unquoted symbol. Regression from 1.0.22.8. (reported by
Ariel Badichi)
* bug fix: named ENUMs in multiply-referenced alien record types no
longer cause an implied type redefinition. Regression from
1.0.21.29.
* bug fix: sign-extension of small signed return values now works
with C code compiled with gcc 4.3 or newer. (reported by Liam
Healy)
* improvements to the Windows port:
+ SB-BSD-SOCKETS now works from saved cores as well. (reported
by Stephen Westfold, thanks to Rudi Schlatte)
New in version 1.0.24, 2008-12-31
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* new feature: ARRAY-STORAGE-VECTOR provides access to the
underlying data vector of a multidimensional SIMPLE-ARRAY.
* new feature: the system now signals a continuable error if
standard readtable modification is attempted. (thanks to Tobias
Rittweiler)
* new feature: DIRECTORY has been extended with a non-standard
keyword argument :RESOLVE-SYMLINKS. (thanks to TC-Rucho)
* enhancement: SB-BSD-SOCKETS:MAKE-SOCKET-STREAM keyword argument
handling has been robustified and documented better. (thanks to
Robert Goldman)
* optimization: faster generic arithmetic dispatch on x86 and
x86-64.
* optimization: FORMAT ~D and ~F are now approximately 5% faster.
* tradeoff: constant FORMAT control strings are now compiled unless
SPACE > SPEED (previously only when SPEED > SPACE.)
* bug fix: Red Hat Enterprise 3 mmap randomization workaround.
(thanks to Thomas Burdick)
* bug fix: DEFCLASS and ENSURE-CLASS-USING-CLASS are now expected
to be thread safe.
* bug fix: lexical type declarations are now correctly reported by
SB-CLTL2. (reported by Larry D'Anna)
* bug fix: STRING-TO-OCTETS did not handle :START properly when
using UTF-8 as external format. (thanks to Luis Oliveira)
* bug fix: errors from invalid fill-pointer values to (SETF
FILL-POINTER) are signalled correctly. (thanks to Stas Boukarev)
* bug fix: SET-MACRO-CHARACTER accepts NIL as the readtable
designator. (thanks to Tobias Rittweiler)
* bug fix: SET-DISPATCH-MACRO-CHARACTER accepts NIL as the
readtable designator, and returns T instead of the function.
(thanks to Tobias Rittweiler)
* bug fix: direct superclasses of STANDARD-CLASS and
FUNCALLABLE-STANDARD-CLASS now default to STANDARD-OBJECT and
FUNCALLABLE-STANDARD-OBJECT as required by AMOP.
* bug fix: compiling a call to SLOT-VALUE with a constant slot-name
when no class with the named slot yet exists no longer causes a
compile-time style-warning.
* bug fix: :ALLOCATION :CLASS slots are type-checked properly in
safe code. (reported by Didier Verna)
* bug fix: #430; nested structure constructors can stack allocate.
* bug fix: on some 64-bit platforms dynamic space size was
truncated to #xffff0000 bytes. (reported by Benjamin Lambert)
* bug fix: setting *READ-SUPPRESS* to T no longer renders the
default REPL unusable. (reported by Daniel Herring)
* bug fix: return values of READ-SEQUENCE did not take :START into
account on file streams, regressions since 1.0.12.22. (reported
by Thomas Russ, patch by Paul Khuong)
* bug fix: using SET or (SETF SYMBOL-VALUE) to change the value of
a method specializer used to confuse permuation vector
optimization.
* bug fix: system inserted bogus implicit type declarations for
local special variables in DEFMETHOD bodies.
* bug fix: #354; duplicated frames in backtraces due to
non-tail-call-optimized XEPs to functions with return type NIL
have been elimited.
* bug fix: #357; MAKE-INSTANCE/SHARED-INITIALIZE now initializes
structure object slots according to DEFSTRUCT initforms, and
DEFSTRUCT forms :INCLUDEind structure classes defined using
DEFCLASS :METACLASS STRUCTURE-CLASS now inherit their initforms.
(reported by Bruno Haible and Stephen Wilson)
* bug fix: #395; fill-pointer output streams used now support
element-type BASE-CHAR as well.
* bug fix: compiler error when attempting to derive return value of
ARRAY-ELEMENT-TYPE when the array type was a union of
intersection types.
* bug fix: address-spaces overlapped on OpenBSD. (thanks to Josh
Elsasser)
* bug fix: Mac OS X binaries should now be portable between Leopard
and Tiger.
New in version 1.0.23, 2008-12-01
Back to top
* enhancement: when disassembling method functions, disassembly for
the associated fast function is also produced.
* enhancement: system stores DEFTYPE lambda-lists, so DESCRIBE can
report them.
* optimization: printing with *PRINT-PRETTY* true is now more
efficient as long as the object being printed doesn't require
special handling by the pretty printer.
* bug fix: slot symbol-macros from WITH-SLOTS inside DEFMETHOD
bodies now interact correctly with type declarations.
* partial bug fix: PCL detects infinite recursion during wrapper
validation. (thanks to Attila Lendvai)
* bug fix: #426; nested function calls are inlined properly.
Previously if FOO was an inline function, in calls of the form
(FOO (FOO ...)) the outer call was not inlined.
* bug fix: long long arguments passed in registers to alien
functions on PowerPC Linux and NetBSD are now handled correctly
when preceded by SYSTEM-AREA-POINTERs. (reported by Josh
Elsasser)
New in version 1.0.22, 2008-10-30
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* minor incompatible change: LOAD-SHARED-OBJECT no longer by
default looks for the shared object in the current directory, but
passes the native namestring of the designated pathname to the
operation system's shared object loading function as-it.
* minor incompatible change: --disable-debugger toplevel option now
takes effect before processing of initialization files and --eval
or --load options.
* new feature: new commandline argument: --script, which supports
shebang lines. See documentation for details. (based on work by
Kevin Reid)
* new feature: SAVE-LISP-AND-DIE can save current values of
--dynamic-space-size and --control-stack-size in the executable
core, causing it to skip normal runtime option processing. See
documentation for details. (thanks to Zach Beane)
* enhancement: inoccous calls to EVAL or generic functions
dispatching on subclasses of eg. STREAM no longer cause compiler
notes to appear.
* enhancement: the system no longer resignals errors from --load
and --eval toplevel arguments as SIMPLE-ERRORS, which caused
restarts associated with the original error to be lost. (thanks
to Ariel Badichi)
* enhancement: :DONT-SAVE keyword argument has been added to
LOAD-SHARED-OBJECT for controlling interaction with
SAVE-LISP-AND-DIE, and UNLOAD-SHARED-OBJECT can be used to undo
the effects of an earlier LOAD-SHARED-OBJECT call.
* bug fix: ADJUST-ARRAY on multidimensional arrays used bogusly
give them a fill pointer unless :DISPLACED-TO or
:INITIAL-CONTENTS were provided. (reported by Cedric St-Jean)
* bug fix: circularity handling in the reader did not treat raw
structure slots correctly. (reported by Cedric St-Jean)
* bug fix: SERVE-EVENT occasionally signaled an error about bogus
file descriptors when there were none.
* bug fix: DEFINE-COMPILER-MACRO support of destructuring
lambda-lists was broken. (reporteed by Willem Broekema)
* bug fix: SB-EXT:NATIVE-NAMESTRING on Windows did not work on
pathnames without a directory.
* bug fix: COMPILE-FILE did not warn about undefined variable
references at toplevel, and LOAD of the resulting fasl did not
signal an error.
* bug fix: functions with non-required arguments used to end up
with (SB-C::&OPTIONAL-DISPATCH ...) as their name.
* bug fix: redefining a function with non-required arguments didn't
update the system's knowledge about its call signature properly.
* bug fix: fixed #431; incompatible alien record type redefinitions
are detected and handled. (reported by Neil Haven)
* bug fix: using RESTRICT-COMPILER-POLICY with DEBUG 3 could cause
PROGV miscompilation. (reported by Matthias Benkard, patch by
Juho Snellman)
* bug fix: on x86 and x86-64 backtraces were sometimes truncated
after alien stack frames.
* bug fix: strings passed to mk{s,d}temp lacked null termination
New in version 1.0.21, 2008-10-02
Back to top
* new feature: the compiler is able to track the effective type of
a generic function across method addition and removal.
* new feature: SB-EXT:ATOMIC-INCF allows atomic incrementation of
appropriately typed structure slots without locking.
* new feature: SB-EXT:CALL-WITH-TIMING provides access to timing
information like those gathered by TIME using a
programming-friendly interface.
* new feature: TIME reports time taken even if the form performs a
non-local transfer of control.
* enhancement: reduced conservativism on GENCGC platforms: on
average 45% less pages pinned (measured from SBCL self build).
* bug fix: SB-EXT:COMPARE-AND-SWAP on SYMBOL-VALUE can no longer
mutate constant symbols or violate declaimed type of the symbol.
* bug fix: SB-THREAD:SIGNAL-SEMAPHORE could fail to wakeup threads
sleeping on the semaphore in heavily contested semaphores.
* bug fix: semaphores and condition variables were not interrupt
safe.
* bug fix: SB-THREAD:CONDITION-WAIT doesn't allow waits on mutexes
owned by other threads anymore.
* bug fix: FIND on lists called KEY outside the specified
subsequence. (reported by budden)
* bug fix: LOG doesn't use single-float intermediate results when
given mixed integer and double-float arguments, leading to better
precision. (reported by Bob Felts)
* bug fix: LOG with base zero returned values of inconsistent type.
New in version 1.0.20, 2008-09-01
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* minor incompatible change: OPTIMIZE qualities
SB-C::STACK-ALLOCATE-DYNAMIC-EXTENT, SB-C::STACK-ALLOCATE-VECTOR,
and SB-C::STACK-ALLOCATE-VALUE-CELLS no longer exist. See
documentation and SB-EXT:*STACK-ALLOCATE-DYNAMIC-EXTENT* for
details.
* documentation: some slot access efficiency guidelines have been
added to the user manual.
* optimization: ASSOC-IF, ASSOC-IF-NOT, MEMBER-IF, MEMBER-IF-NOT,
RASSOC, RASSOC-IF, and RASSOC-IF-NOT are now equally efficient as
ASSOC and MEMEBER.
* optimization: calls to ASSOC, MEMBER, and RASSOC can be
transformed to more efficient EQ-comparison versions more often.
* optimization: enhanced derivation of DOLIST iteration variable
type for constant lists.
* optimization: constant folding of simple (LIST ...) forms as
DOLIST arguments.
* optimization: runtime lookup of function definitions can be
elided in more cases, eg: (let ((x 'foo)) (funcall foo)).
* optimization: compiler is able to derive the return type of (AREF
(THE STRING X) Y) as being CHARACTER.
* optimization: CLRHASH on empty hash-tables no longer does
pointless work. (thanks to Alec Berryman)
* optimization: REPLACE deftransforms don't punt when :START1 or
:START2 is given
* bug fix: compiling DESTRUCTURING-BIND on constant list arguments
no longer emits a code deletion note. (reported by Andrew
Gasparovic)
* bug fix: bogus odd-number-of-keywords STYLE-WARNINGs from calls
to functions with an odd number of &OPTIONAL arguments, a &REST
argument, and one or more &KEY arguments at the call site.
* bug fix: STYLE-WARNINGs for functions with both &OPTIONAL and &
KEY arguments appeared at call sites as well.
* bug fix: fixed #425; CLOSE drops input buffers from streams, so
READ-LINE &co can no longer read from them afterwards. (reported
by Damien Cassou)
* bug fix: fixed #427: unused local aliens no longer cause compiler
breakage. (reported by Stelian Ionescu, Andy Hefner and Stanislaw
Halik)
* bug fix: non-local exit from a WITH-ALIEN form no longer causes
alien-stack leakage. (reported by Andy Hefner)
* bug fix: PROGV signals an error when an attempt to violate
declared type of a variable or bind a constant is made.
* bug fix: SET signals an error when an attempt to violate declared
type of a variable is made.
* bug fix: restart computation during the execution of a restart
test function no longer causes infinite recursion. (reported by
Michael Weber)
* bug fix: calling SB-COVER:REPORT with a non-directory pathname
now signals an error. (thanks to Pierre Mai)
* bug fix: EXPORT left symbol unexported in conflict situations.
(thanks to Michael Weber)
* bug fix: correctly handle name conflicts involving CL:NIL.
(thanks to Michael Weber)
* bug fix: RESOLVE-CONFLICT restart for name conflicts handles
conflicts arising from USEing package with conflicting symbols
correctly. (thanks to Michael Weber)
New in version 1.0.19, 2008-07-30
Back to top
* new feature: user-customizable variable
SB-EXT:*MUFFLED-WARNINGS*; warnings that go otherwise unhandled
will be muffled if they are of the type that's the value of this
variable.
* optimization: stack allocation is slightly more efficient on x86
and x86-64.
* bug fix: DEFSTRUCT forms with user-specified :CONSTRUCTOR
options, where a raw slot always is initialized using the
initform whose type is not know sufficiently well a compile-time
are now compiled correctly. (reported by John Morrison)
* bug fix: compiler no longer makes erronous assumptions in the
presence of non-foldable SATISFIES types.
* bug fix: stack analysis missed cleanups of dynamic-extent
arguments in non-let-converted calls to local functions.
* improvements to the Windows port:
+ adjusted address spaces for building on both Win32 and Win64.
(thanks for John Connors)
* fixed some bugs revealed by Paul Dietz' test suite:
+ interval arithmetic during type derivation used inexact
integer to single-float coercions.
+ arithmetic operations involving large integers and single
floats give the same results in compiled and interpreted
code.
+ deriving the result type of COERCE no longer signals an error
if the derived type of the second argument is a MEMBER type
containing invalid type specifiers.
+ ADJOIN with constant NIL as second argument works correctly.
+ FUNCTION-KEYWORDS was called
SB-PCL::FUNCTION-KEYWORD-PARAMETERS.
New in version 1.0.18, 2008-06-29
Back to top
* minor incompatible change: SB-SPROF:WITH-PROFILING now by default
profiles only the current thread.
* minor incompatible change: changes to SYMBOL-VALUE of constants
defined with DEFCONSTANT now signal an error.
* enhancement: SB-SPROF now has support for wallclock profiling,
and is also able to profile specific threads. REPORT output has
also additional sorting options.
* enhancement: better pretty-printing of DEFPACKAGE forms. (Thanks
to Michael Weber)
* optimization: structure allocation has been improved
+ constructors created by non-toplevel DEFSTRUCTs are ~40%
faster.
+ out of line constructors are ~10% faster.
+ inline constructors are ~15% faster.
+ inline constructors are capable of dynamic extent allocation
(generally on x86 and x86-64, in some cases on other
platforms as well.)
* optimization: simple uses of HANDLER-CASE and HANDLER-BIND no
longer cons.
* optimization: file compiler is now able to coalesce non-circular
lists, non-base strings, and bit-vectors. Additionally, constants
are never referenced through SYMBOL-VALUE at runtime.
* optimization: code defining methods on PRINT-OBJECT (and other
generic functions in the COMMON-LISP package) now loads faster.
* bug fix: EAI_NODATA is deprecated since RFC 3493. Stop using it
in sb-bsd-sockets.
* bug fix: if COMPILE-FILE aborts due to an unwind, the partial
fasl is now deleted. (reported by Attila Lendvai)
* bug fix: READ-LINE always returned NIL for the last line in
files. (reported by Yoshinori Tahara)
* bug fix: more accurate disassembly annotations of foreign
function calls. (thanks to Andy Hefner)
* bug fix: trimming non-simple strings and non-string string
designators when the there is nothing to trim works properly.
(thanks to James Knight)
* new feature: SB-POSIX bindings for mlockall, munlockall, and
setsid. (thanks to Travis Cross)
* fixed some bugs revealed by Paul Dietz' test suite:
+ NIL is a valid function name (regression at 1.0.13.38)
+ FILL on lists was missing its return value (regression at
1.0.12.27)
+ STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not
respect fill pointers properly (regression at 1.0.12.23)
+ STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not
respect displacement indices properly (regression at
1.0.12.23)
New in version 1.0.17, 2008-05-28
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* temporary regression: user code can no longer allocate closure
variable storage on stack, due to bug 419 without explicitly
requesting it. Please consult sbcl-devel for advice if you need
to use this feature in the meanwhile.
* new feature: runtime argument --control-stack-size can be used to
adjust thread default control stack size.
* enhancement: improved TIME output
+ all times are reported using the measured accuracy
(milliseconds for real and GC times, microseconds for
everything else.)
+ processor cycle counts on x86 and x86-64.
+ interpreted forms are counted for both evaluator modes.
+ number of lambdas converted by the compiler is reported.
+ CPU percentage report (computed from real and total run
time.)
+ more comprehensive run time reporting, using a condenced
format
+ interperted form, lambda, and page fault counts are omitted
when zero.
* optimization: ADJOIN and PUSHNEW are upto ~70% faster in normal
SPEED policies.
* optimization: APPEND is upto ~10% faster in normal SPEED
policies.
* optimization: two argument forms of LAST are upto ~10% faster in
normal SPEED policies.
* optimization: NCONC no longer needs to heap cons its &REST list
in normal SPEED policies.
* bug fix: SB-FLUID build feature no longer breaks the build.
(thanks to Sidney Markowitz)
* bug fix: UNION and NUNION work with :TEST-NOT once more,
regression since 1.0.9.1. (thanks to Eric Marsden)
* bug fix: result of MAKE-ARRAY can be stack allocated - regression
since 1.0.15.36. (thanks to Paul Khuong)
* bug fix: LAST when always returned the whole list when given a
bignum as the second argument.
* bug fix: dynamic extent allocation of nested lists and vectors
could leak to otherwise accessible parts.
* bug fix: invalid optimization of heap-allocated alien variable
reference.
* bug fix: fasl header checking is less vulnerable to different
platform word lengths.
* bug fix: more correct assembler syntax for GNU binutils
2.18.50.0.4 support. (thanks to Marijn Schouten)
* bug fix: fix ECASE warnings from CMUCL-as-xc-host. (reported by
Andreas Franke)
* bug fix: the fopcompiler can handle LOCALLY forms (with no
declarations) successfully. (reported by Attila Lendvai)
New in version 1.0.16, 2008-04-13
Back to top
* minor incompatible change: revert the changes to sb-posix's error
signaling added in 1.0.14.
* minor incompatible change: change PROBE-FILE back to returning
NIL whenever we can't get a truename, as was the case before
1.0.14.
* minor incompatible change: SB-BSD-SOCKETS:NAME-SERVICE-ERROR now
inherits from ERROR instead of just CONDITION.
* new feature: SB-INTROSPECT can provide source locations for
instances as well. (thanks to Tobias Rittweiler)
* optimization: binding special variables now generates smaller
code on threaded platforms.
* optimization: MEMBER and ASSOC are over 50% faster for :TEST #'EQ
and cases where no :TEST is given but the compiler can infer that
the element to search is of type (OR FIXNUM (NOT NUMBER)).
* optimization: better LOGNOT on fixnums.
* optimization: modular arithmetic for a particular requested width
is implemented using a tagged representation unless a better
representation is available.
* fixed bug 423: TRULY-THE and *CHECK-CONSISTENCY* interaction.
* bug fix: SB-BSD-SOCKETS:MAKE-INET-ADDRESS checks the input string
for wellformedness and returns a specialized vector. (reported by
Francois-Rene Rideau)
* bug fix: FIND-CLASS was not thread-safe. (reported by Attila
Lendvai)
* bug fix: ~R was broken for vigtillions. (thanks to Luis Oliveira)
* bug fix: attempt to obtain *SCHEDULER-LOCK* recursively when
unscheduling timer at the same time as another timer fires.
* bug fix: don't reschedule timers for dead threads.
* bug fix: periodic polling was broken. (thanks to Espen S Johnsen)
* bug fix: copying output from RUN-PROGRAM to a stream signalled
bogus errors if select() was interrupted.
* enhancement: add support for fcntl's struct flock to SB-POSIX.
New in version 1.0.15, 2008-02-26
Back to top
* enhancement: cleaner backtraces for interactive interrupts, as
well as other cases where the interesting frames used to be
obscured by interrupt handling frames.
* enhancement: untracing a whole package using (UNTRACE "FOO") is
now supported, and tracing a whole package using (TRACE "FOO")
now traces SETF-functions as well.
* enhancement: implement SB-POSIX:MKTEMP and SB-POSIX:MKDTEMP.
* SB-DEBUG:PRINT-FRAME-CALL now prints the entry-point kind even
when SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS* is NIL.
* unreadably printed representation of hash-tables now includes
weakness if any.
* bug fix: partially fixed #188: type propagation from assignments
is now more efficient.
* bug fix: fixed #407: (COERCE X 'SINGLE-FLOAT) and (COERCE X
'DOUBLE-FLOAT) are not flushable.
* bug fix: on x86 and x86-64 pointer based EQ-hashing now uses the
full address of the object, and none of the tag bits.
* bug fix: readably printing hash-tables now respects other printer
control variables. (reported by Cedric St-Jean)
* bug fix: compiler gave a bogus STYLE-WARNING for the
:SYNCHRONIZED keyword with MAKE-HASH-TABLE.
* bug fix: export SB-POSIX:MKSTEMP.
* bug fix: SORT was not interrupt safe.
* bug fix: XREF accounts for the last node of each basic-block as
well.
* bug fix: MAKE-INSTANCE optimizations interacted badly with
non-keyword :DEFAULT-INITARGS in the presence of :BEFORE/:AFTER
methods on SHARED-INITIALIZE. (thanks to Matt Marjanovic)
* bug fix: the CTOR optimization for MAKE-INSTANCE should no longer
create obsolete instances in the case of redefinition or
obsoletion of a superclass. (thanks to Andy Hefner)
* bug fix: Support for the Alpha architecture has been revived; it
had suffered somewhat from lack of maintenance since sbcl-1.0.
* improvements to the Windows port:
+ The system detects the codepage to use at startup, instead of
using the value from the saved core. (thanks to Kei Suzuki)
New in version 1.0.14, 2008-01-27
Back to top
* new feature: SB-EXT:*EXIT-HOOKS* are called when the process
exits (see documentation for details.)
* revived support for OpenBSD (contributed by Josh Elsasser)
* partially fixed bug #108: ROOM no longer suffers from occasional
(AVER (SAP= CURRENT END)) failures.
* fixed bug #402: proclaimed non-standard declarations in DEFMETHOD
bodies no longer cause a WARNING to be signalled. (reported by
Vincent Arkesteijn)
* bug fix: (TRUNCATE X 0) when X is a bignum now correctly signals
DIVISION-BY-ZERO. Similarly for MOD and REM (which suffered due
to the bug in TRUNCATE.) (reported by Michael Weber)
* bug fix: SB-SPROF:REPORT no longer signals an error if there are
no samples. (reported by Andy Hefner)
* bug fix: functions compiled using (COMPILE NIL '(LAMBDA ...)) no
longer appear as (NIL ...) frames in backtraces.
* bug fix: RESOLVE-CONFLICT (and the other name conflict machinery)
is now actually exported from SB-EXT as documented. (reported by
Maciej Katafiasz)
* bug fix: sb-aclrepl now correctly understands how to inspect
single-floats on 64-bit platforms where single-floats are not
boxed.
* bug fix: SB-MOP:CLASS-SLOTS now signals an error if the class has
not yet been finalized. (reported by Levente Meszaros)
* bug fix: CLOSE :ABORT T behaves more correctly on Windows.
* DESCRIBE and (DOCUMENTATION ... 'OPTIMIZE) describe meaning of
SBCL-specific optimize qualities.
New in version 1.0.13
Back to top
* minor incompatible change: RUN-PROGRAM now uses execvp(3) to find
an executable in the search path, and does so in the child
process's PATH. The function FIND-EXECUTABLE-IN-SEARCH-PATH has
been removed; it can be found in the CVS history, for somebody
who needs that search behavior (see the manual).
* minor incompatible change: compiler policy re. weakening type
checks has changed: now type checks are weakened only if SAFETY <
2 and SAFETY < SPEED.
* SB-EXT:NATIVE-NAMESTRING takes a new keyword AS-FILE, forcing
unparsing of directory pathnames as files. Analogously,
SB-EXT:PARSE-NATIVE-NAMESTRING takes an AS-DIRECTORY, forcing a
filename to parse into a directory pathname.
* enhancement: implicit generic function creation now signals a
specific style-warning IMPLICIT-GENERIC-FUNCTION-WARNING, which
users can bind handlers for and muffle around calls to LOAD.
* enhancement: RUN-PROGRAM allows unicode arguments and
environments to be used (using the default stream external
format), and allows non-simple strings to be used. (thanks to
Harald Hanche-Olsen)
* optimization: COPY-SEQ, FILL, and SUBSEQ are 30-80% faster for
strings and vectors whose element-type or simplicity is not fully
known at compile-time.
* optimization: STRING-TRIM and related functions no longer
allocate a new string when no trimming needs to be performed.
These functions are also faster than before when the input string
has been declared as a simple-string.
* optimization: READ-SEQUENCE on simple-strings is up to 80%
faster.
* optimization: READ-LINE is significantly faster for files
containing long lines.
* optimization: non-open coded uses of character comparison
operators (e.g. char=) no longer cons when called with more than
one parameter on platforms supporting dynamic-extent allocation.
* bug fix: READ-SEQUENCE on composite stream wrapping a Gray stream
with STREAM-ELEMENT-TYPE (UNSIGNED-BYTE 8) signalled an error.
* bug fix: COPY-SEQ on lists did not signal a type-error on
improper lists in safe code.
* bug fix: some sequence functions elided bounds checking when
SPEED > SAFETY.
* bug fix: too liberal weakening of union-type checks when SPEED >
SAFETY.
* bug fix: more bogus fixnum declarations in ROOM implementation
have been fixed.
New in version 1.0.12, 2007-11-26
Back to top
* new feature: MAKE-HASH-TABLE now experimentally accepts a
:SYNCHRONIZED argument, which makes the hash-table safe for
concurrent accesses (but not iteration.) See also:
SB-EXT:WITH-LOCKED-HASH-TABLE, and
SB-EXT:HASH-TABLE-SYNCHRONIZED-P.
* optimization: CONCATENATE on strings is an order of magnitude
faster in code compiled with (> SPEED SPACE).
* optimization: SUBSEQ is ~50% faster on lists.
* bug fix: bug 417 fixed -- source location reporting is now more
robust.
* bug fix: SUBSEQ on a list will now correctly signal an error if
if END is smaller then START.
* bug fix: SB-PROFILE will no longer report extra consing for
nested calls to profiled functions.
* bug fix: ROOM implementation had bogus fixnum declarations which
could cause type-errors when calling ROOM on large images.
* bug fix: if file compilation is aborted, the partial fasl is now
deleted, and COMPILE-FILE returns NIL as the primary value.
* bug fix: number of thread safety issues relating to SBCL's
internal hash-table usage have been fixed.
* bug fix: SB-SYS:WITH-PINNED-OBJECTS could cause garbage values to
be returned from its body when the values were being returned
using unknown-values return convection and the W-P-O was wrapped
inside an UNWIND-PROTECT.
* bug fix: sb-posix should now compile again under Windows,
enabling slime to work again.
New in version 1.0.11, 2007-10-25
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* incompatible change: hash-table accessor functions are no longer
automatically protected by locks. Concurrent accesses on the same
hash-table from multiple threads can give inconsistent results or
even corrupt the hash-table completely. Multi-threaded
applications should do their own locking at the correct
granularity. In the current implementation it is still safe to
have multiple readers access the same table, but it's not
guaranteed that this property will be maintained in future
releases.
* minor incompatible change: (SETF MUTEX-VALUE) is not longer
supported, and will signal an error at runtime.
* enhancement: SB-THREAD package now exports a semaphore interface.
* enhancement: CONS can now stack-allocate on x86 and x86-64.
(Earlier LIST and LIST* supported stack-allocation, but CONS did
not.)
* enhancement: nested lists can now be stack allocated on platforms
providing stack allocation support.
* enhancement: dynamic-extent support has been extended to support
cases where there are multiple possible sources for the stack
allocated value.
* optimization: RELEASE-MUTEX no longer needs to perform a syscall
if the mutex is uncontested on Linux.
* bug fix: symbol-macro expansion now uses the *MACROEXPAND-HOOK*
as specified by the CLHS. (thanks to Tobias Rittweiler)
* bug fix: NaN comparison now works on x86-64.
* bug fix: CLOSE :ABORT T on a stream with pending output now
works.
* bug fix: instances of non-standard metaclasses using standard
instance structure protocol sometimes missed the slot type checks
in safe code.
* bug fix: known functions can be inlined in high-debug code.
New in version 1.0.10, 2007-09-25
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* minor incompatible change: the MSI installer on Windows no longer
associates .lisp and .fasl files with the installed SBCL.
* minor incompatible change: :UNIX is no longer present in
*FEATURES* on Windows. (thanks to Luis Oliviera)
* new feature: SB-CLTL2 contrib module now implements
FUNCTION-INFORMATION. (thanks to Larry D'Anna)
* optimization: scavenging weak pointers is now more efficient,
requiring O(1) instead of O(N) per weak pointer to identify
scanvenged vs. unscavenged pointers. (thanks to Paul Khuong)
* optimization: typechecking (SETF SLOT-VALUE) is now ~5x faster in
method bodies using constant slot-names when the first argument
is a specializer parameter for the method.
* optimization: SLOT-VALUE &co are now ~50% faster for variable
slot names, when the class of the instance is a direct instance
STANDARD-CLASS or FUNCALLABLE-STANDARD-CLASS (making them only 3x
as slow as the constant slot-name case.)
* optimization: member type construction is now O(N) instead of O(N
^2).
* optimization: UNION and NUNION are now O(N+M) for large inputs as
long as the :TEST function is one of EQ, EQL, EQUAL, or EQUALP.
* enhancement: DEFINE-MODIFY-MACRO lambda-list information is now
more readable in environments like Slime which display it.
(thanks to Tobias C. Rittweiler)
* bug fix: SB-EXT:COMPARE-AND-SWAP was non-atomic unless the
compiler was able to infer the correct argument type for the
object on which the CAS operation was being performed.
* bug fix: copy propagation interfered with parallel assignment
semantics in local calls. (reported by Paul Khuong)
* bug fix: the signed modular fixnum shift compiled to wrong code
on x86 and x86-64. (spotted by a slight modification to some of
PFD's random tests)
New in version 1.0.9, 2007-08-27
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* minor incompatible change: SB-SYS:OUTPUT-RAW-BYTES is deprecated.
* enhancement: SB-EXT:FINALIZE accepts a :DONT-SAVE keyword
argument, indicating the finalizer should be cancelled when
SAVE-LISP-AND-DIE is called.
* enhancement: default PRINT-OBJECT methods for classes,
slot-definitions, and generic function now print the object
identity for anonymous instances. (thanks to Attila Lendvai)
* enhancement: as an extension to MOP, SBCL now supports SETF of
STANDARD-INSTANCE-ACCESS and
FUNCALLABLE-STANDARD-INSTANCE-ACCESS. (thanks to Attila Lendvai)
* enhancement: sb-cover has an alternate annotation mode which puts
the form annotations at the car of the form, instead of
annotating it completely. The benefit of this mode is that it
shows better which forms were instrumented by the compiler.
* bug fix: new compiler transforms for MEMBER and ASSOC were
affected by printer control variables. (reported by Dan Corkill)
* bug fix: system leaked memory when delayed output was performed
by the OS in smaller chunks then expected. (thanks to David
Smith)
* bug fix: system leaked memory when file streams were not closed
properly.
* bug fix: large objects written to slow streams that were modified
after the write could end up with the modified state written to
the underlying file descriptor.
* bug fix: multiple threads operating in parallel on the same
stream could cause buffer-overflows.
* bug fix: source location information is stored correctly (broken
since 1.0.6). This bug would generally show up as the Slime
debugger highlighting the wrong form when the sldb-show-source
command was used.
* bug fix: Branch forms are again annotated as branches in the
sb-cover annotations.
* bug fix: GCD on MOST-NEGATIVE-FIXNUM no longer causes an infinite
loop on x86-64. (reported by Gregory Vanuxem)
* bug fix: EQUALP could return wrong results for structures with
raw slots (slots with a :TYPE of SINGLE-FLOAT, DOUBLE-FLOAT, or a
machine word). (reported by Vjacheslav Fyodorov)
* bug fix: sb-sprof sampling didn't work on non-x86oid platforms.
(patch by Pierre Mai)
New in version 1.0.8, 2007-07-25
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* enhancement: experimental macro SB-EXT:COMPARE-AND-SWAP provides
atomic compare-and-swap operations on threaded platforms.
* enhancement: experimental function
SB-EXT:RESTRICT-COMPILER-POLICY allows assigning a global minimum
value to optimization qualities (overriding proclamations and
declarations).
* enhancement: closed over variables can be stack-allocated on x86
and x86-64.
* performance bug fix: GETHASH and (SETF GETHASH) are once again
non-consing.
* optimization: slot definition lookup is now O(1). This speeds up
eg. SLOT-VALUE and (SETF SLOT-VALUE) with variable slot names.
* optimization: STRING-TO-OCTETS is now up to 60% faster for UTF-8.
* optimization: ASSOC and MEMBER can now be open-coded for all
combinations of keyword arguments when second argument is
constant and SPEED >= SPACE. In other cases a specialized version
is selected.
* bug fix: using obsoleted structure instances with TYPEP and
generic functions now signals a sensible error.
* bug fix: threads waiting on GET-FOREGROUND can be interrupted.
(reported by Kristoffer Kvello)
* bug fix: backtrace construction is now more careful when making
lisp-objects from pointers on the stack, to avoid creating bogus
objects that can be seen by the GC.
* bug fix: defaulting of values in contexts expecting more than 7
variables now works on x86-64. (reported by Christopher Laux)
* bug fix: modifications to packages (INTERN, EXPORT, etc) are now
thread safe.
* bug fix: (SETF SYMBOL-PLIST) no longer allows assigning a
non-list as the property-list of a symbol.
* bug fix: DEFMETHOD forms with CALL-NEXT-METHOD in the method
body, in EVAL-WHEN forms with both :COMPILE-TOPLEVEL and
:LOAD-TOPLEVEL situations requested, are once again
file-compileable. (reported by Sascha Wilde)
New in version 1.0.7, 2007-06-27
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* MOP improvement: support for user-defined subclasses of
SB-MOP:SPECIALIZER has been enhanced. The experimental interface
function SB-PCL:MAKE-METHOD-SPECIALIZERS-FORM, called as part of
the expansion of DEFMETHOD, is responsible for generating a form
which creates a list of specializers when evaluated. Additional
functions SB-PCL:[UN]PARSE-SPECIALIZER-USING-CLASS provide
debugging and introspective support.
* minor incompatible change: the (unsupported) spinlock interface
has changed: free spinlock now has the value NIL, and a held
spinlock has the owning thread as its value.
* enhancement: WITHOUT-INTERRUPTS now binds ALLOW-WITH-INTERRUPTS
and WITH-LOCAL-INTERRUPTS as local macros. Refer to documentation
string for details.
* enhancement: name of a socket-stream is now "a socket" instead of
"a constant string".
* enhancement: SB-POSIX now supports lockf(). (Thanks to Zach
Beane.)
* enhancement: SB-POSIX now supports getcwd(). (Thanks to Tassilo
Horn.)
* enhancement: SB-INTROSPECT:FUNCTION-ARGLIST shows nicer argument
lists for generic functions. (Thanks to Tobias C. Rittweiler)
* optimization: bignum printing speed has been improved by 20-40%
(depending on the bignum size.)
* bug fix: WITH-MUTEX and WITH-RECURSIVE-LOCK are now interrupt
safe on Linux.
* bug fix: the cache used by the CLOS to store precomputed
effective methods, slot offsets, and constant return values is
now thread and interrupt safe.
* bug fix: generic function dispatch function updating is now
thread and interrupt safe (in the sense that the known issues
have been fixed.)
* bug fix: ADD/REMOVE-METHOD is now thread and interrupt safe.
* bug fix: interning EQL-specializers is now thread and interrupt
safe.
* bug fix: asdf systems with dependencies to the SB-POSIX or
SB-BSD-SOCKETS contribs can be loaded with :FORCE T.
* bug fix: interrupt safety of applicable method computation has
been improved.
New in version 1.0.6, 2007-05-27
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* new contrib: sb-cover, an experimental code coverage tool, is
included as a contrib module.
* optimization: STRING-TO-OCTETS for unibyte encodings and UTF-8 is
significantly faster.
* optimization: calls of the form (AREF FOO (+ INDEX ))
now produce more efficient code on x86-64 if the compiler can
determine that (+ INDEX ) does not require a bounds
check and FOO has an element type at least 8 bits wide.
* enhancement: a new, experimental synchronous timeout facility is
provided. Refer to SB-SYS:WITH-DEADLINE for details.
* enhancement: when a symbol name conflict error arises, the
conflicting symbols are always printed with a package prefix.
(thanks to Kevin Reid)
* enhancement: stepping is now once again supported on the SPARC
and MIPS platforms. (It is also now more likely to work on
CheneyGC builds on the PPC.)
* enhancement: sb-sprof can now also track and report accurate call
counts.
* bug fixes: the treatment of non-standard subclasses of
SB-MOP:SPECIALIZER is more correct.
* incompatible change: PURIFY no longer copies the data from the
dynamic space into the static and read-only spaces on platforms
that use the generational garbage collector
* bug fix: GETHASH, (SETF GETHASH), CLRHASH and REMHASH are now
interrupt safe.
* bug fix: GC race condition occasionally resulting in crashes with
the error message "SIG_STOP_FOR_GC blocked at a bad place" has
been fixed.
* bug fix: &ENVIRONMENT variables in macro lambda lists can now be
declared ignored.
* bug fix: DEFSETF lambda lists without &ENVIRONMENT no longer
cause a STYLE-WARNING to be signalled (regression from 1.0.4.)
* bug fix: an asynchronous interrupt could previously leave the
system running with GC inhibited.
* bug fix: a DECLARE form evaluated at top-level now causes an
error rather than silently (or verbosely) returning NIL.
* bug fix: trying to dissassemble functions compiled at high DEBUG
could result in a error being signalled due to source form lookup
errors. (reported by Peter Graves)
New in version 1.0.5, 2007-04-28
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* incompatible change: removed writer methods for host-ent-name,
host-ent-addresses -- changing the values did not update the DNS
information anyway.
* minor incompatible change: changed experimental JOIN-THREAD
interface
* documentation: the manual now lists reader and writer methods in
class slot documentation sections. (thanks to Richard M Kreuter)
* documentation: unwinding from asyncronous events has been
documented as unsafe.
* documentation: SB-SYS:WITHOUT-GCING has been documented as unsafe
in multithreaded application code.
* optimization: GET-INTERNAL-REAL-TIME has been optimized on POSIX
platforms. (thanks to James Anderson for the optimization hint)
* optimization: REPLACE, SUBSEQ, and COPY-SEQ are now optimized in
more cases.
* optimization: STRING-{EQUAL,LESSP,GREATER-P} and their NOT-
variants no longer cons.
* optimization: Direct calls to CHAR-{EQUAL,LESSP,GREATERP} and
their NOT- variants no longer cons.
* optimization: EQUAL hash tables no longer use SXHASH for objects
of all data types, but instead use an EQL hash for types for
which EQUAL is the same as EQL.
* optimization: the non-inlined generic versions of AREF and (SETF
AREF) are significantly faster.
* optimization: new STRING-OUTPUT-STREAM implementation is much
faster for large outputs and conses 30% less on average.
* enhancement: XREF information is now collected for references
made to global variables using SYMBOL-VALUE and a constant
argument.
* enhancement: SIGINT now causes a specific condition
SB-SYS:INTERACTIVE-INTERRUPT to be signalled.
* bug fix: FILE-POSITION used to signal an error in some cases
where ANSI requires it to return NIL.
* bug fix: ADJUST-ARRAY is now interrupt-safe.
* bug fix: adding and removing fd-handlers is now interrupt-safe.
* bug fix: inlined calls to C now ensure 16byte stack alignment on
x86/Darwin.
* bug fix: bad type declaration in the CLOS implementation has been
fixed. (reported by James Anderson)
* bug fix: incorrect ROOM reporting on x86-64 has been fixed.
(thanks to Lutz Euler)
* bug fix: DEFSETF now allows &ENVIRONMENT and disallows &AUX as
required by the CLHS. (reported by Samium Gromoff)
* bug fix: dead unbound variable references now signal an error.
(reported by Marco Monteiro)
* bug fix: / with an unused value was being deleted in safe code.
(thanks to Marco Monteiro and Kevin Reid)
* bug fix: number of characters that can be written onto a single
line in a file is unlimited.
* bug fix: some GC deadlocks caused by asynchronous interrupts have
been fixed by inhibiting interrupts for when GC is disabled.
* bug fix: some interrupt safety issues with GETHASH, (SETF
GETHASH), CLRHASH and REMHASH have been fixed.
* bug fix: binding *BREAK-ON-SIGNALS* to a value that is not a type
specifier no longer causes infinite recursion.
* bug fix: SB-EXT:MUFFLE-CONDITIONS declarations no longer trigger
a bogus warning in DEFMETHOD bodies. (reported by Kevin Reid)
* bug fix: an &environment argument with the correct variable
information is passed to macros that are expanded during byte
compilation. (reported by Samium Gromoff)
* bug fix: a logic error was causing the hash function for bignums
to have excessive amounts of collisions. (reported by Fare
Rideau)
* bug fix: modifying the contents of an array could change the
return value of SXHASH on that array, which is only allowed for
strings and bit vectors. (bug introduced in 0.9.16)
* improvement: the x86-64/darwin port now passes all tests (except
for the debugger tests) but should still be considered
experimental until this is fixed.
* improvement: a style-warning is signaled for CASE (etc) clauses
with duplicate keys. (thanks to Kevin Reid)
* improvement: macos/x86 and macos/x86-64 now use mach exception
handlers for dealing with illegal instructions (for trapping and
error handling) and memory protection violations (for GC).
New in version 1.0.4, 2007-03-25
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* new platform: experimental support for x86-64/darwin (MacOS).
* incompatible change: the thread-safe (on most platforms)
getaddrinfo and getnameinfo sockets functions are used instead of
gethostbyaddr and gethostbyname, on platforms where the newer
functions are available. As a result, the ALIASES field of
HOST-ENT will always be NIL on these platforms.
* change: runtimes with embedded cores (i.e. saved with :EXECUTABLE
T) don't print the startup banner, but behave as if --noinform
was passed as a command line argument. (thanks to Kevin Reid)
* new experimental feature: added JOIN-THREAD (by NIIMI Satoshi)
* optimization: code using alien values with undeclared types is
much faster.
* optimization: the compiler is now able to open code SEARCH in
more cases.
* optimization: more compact typechecks on x86-64 (thanks to Lutz
Euler)
* bug fix: using standardized COMMON-LISP special variables as loop
variables no longer signals bogus package lock violations.
(reported by Eric Marsden)
* bug fix: declaring local loop variables to be of a range-limited
type such as (SINGLE-FLOAT 1.0 2.0) no longer causes a
compile-time error. (reported by Andras Simon)
* bug fix: >= and <= gave wrong results when used with NaNs. (Some
NaN bugs remain on x86-64.)
* bug fix: the #= and ## reader macros now interact reasonably with
funcallable instances.
* bug fix: type-checks for function arguments were compiled using
the compiler policy settings of the wrong lexical environment (in
1.0.2 and 1.0.3).
* bug fix: SHADOW accepts characters as string designators, as
required by the spec (thanks to Eric Marsden)
* bug fix: fixed GC safety issues when foreign functions are called
with non-base strings as arguments
* bug fix: more consistent error output for
fatal-compiler-warnings, like reader errors
* bug fix: functions with proper names were showing up as NIL in
backtraces (reported by Edi Weitz, regression in 1.0.2)
New in version 1.0.3, 2007-02-27
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* new platform: NetBSD/PPC. (thanks to Aymeric Vincent)
* optimization: calls of the form (AREF FOO (+ INDEX ))
now produce more efficient code on the x86 if the compiler can
determine that (+ INDEX ) does not require a bounds
check and FOO has an element type at least 8 bits wide.
* bug fix: references to undefined variables are handled the same
way in toplevel forms as in the normal compiler
* bug fix: the build scripts again work with non-bash /bin/sh
(thanks to Magnus Henoch)
* bug fix: use "gtar" as the asdf-install *TAR-PROGRAM* on NetBSD
(thanks to Jon Buller)
* improvement: faster compilation times for complex functions
* improvement: added readlink support to SB-POSIX (thanks to
Richard M Kreuter)
New in version 1.0.2, 2007-01-25
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* improvement: experimental support for mach exception handling on
x86/macos. requires building with :MACH-EXCEPTION-HANDLER feature
to use.
* improvement: support for GBK external format. (thanks to Chun
Tian (binghe))
* improvement: the debugger now displays variables that have been
closed over, in code compiled with (DEBUG 2) or higher
* improvement: support for executable cores on NetBSD (thanks to
Richard Kreuter)
* new feature: added a RESTART-FRAME debugger command
* new feature: new generic function SB-GRAY:STREAM-FILE-POSITION
can be used to provide an implementation for FILE-POSITION on
Gray streams (thanks to Eric Marsden)
* new feature: add syslog, openlog and closelog support to SB-POSIX
(thanks to Richard Kreuter)
* optimization: the function call overhead in code compiled with a
high DEBUG optimization setting is significantly
* bug fix: an error is signaled for attempts to use READ-SEQUENCE
for a (SIGNED-BYTE 8) stream and (UNSIGNED-BYTE 8) vector, or
vice versa. (thanks to Tony Martinez)
* bug fix: the initforms for DEFMETHOD &AUX parameters are only
evaluated once (reported by Kevin Reid)
* bug fix: the :SHOW-PROGRESS keyword parameter to
SB-SPROF:WITH-PROFILING works again (thanks to Kilian Sprotte)
* bug fix: an error is signaled for tagbodies with duplicate tags
(thanks to Stephen Wilson)
* bug fix: NIL can be used as a tagbody tag (thanks to Stephen
Wilson)
* bug fix: Win32 port can now handle foreign code unwinding Lisp
stack frames from alien callbacks.
* bug fix: ATANH returned incorrect results on win32 (thanks to
Pierre Mai)
* bug fix: SBCL works on Linux/ppc systems with a kernel configured
to use 65k pages (thanks to David Woodhouse)
* bug fix: fix SB-POSIX dirent and socket on NetBSD (thanks to
Richard Kreuter)
New in version 1.0.1
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* new platform: FreeBSD/x86-64, including support for threading.
* new feature: the compiler stores cross-referencing information
about function calls (who-calls), macroexpansion
(who-macroexpands) and special variables (who-binds, who-sets,
who-references) for code compiled with (< SPACE 3). This
information is available through the sb-introspect contrib.
* new feature: users may subclass SEQUENCE, and have instances of
these classes interoperate with standard Common Lisp functions if
a number of methods are defined. (This feature is experimental
and the interface subject to change based on feedback from SBCL
users and the general community)
* improvement: sb-sprof traces call stacks to an arbitrary depth on
x86/x86-64, rather than the previous fixed depth of 8
* improvement: another pthread back-end of mutex "pthread-futex".
* bug fix: non-ascii command-line arguments are processed correctly
(thanks to Yaroslav Kavenchuk)
* bug fix: non-required arguments were not passed correctly when a
method defined using DEFMETHOD was called from a mop-generated
method using CALL-NEXT-METHOD (reported by Pascal Costanza)
* bug fix: recursion is now permitted in accessors through
SLOT-UNBOUND. (reported by Pascal Costanza)
* bug fix: an error was signaled at startup if the HOME environment
variable was defined, but had an empty value (reported by Peter
Van Eynde)
* bug fix: non ordinary lambda-list keyword in ordinary lambda
lists signal a PROGRAM-ERROR, not a BUG.
* bug fix: SB-POSIX:READDIR works when built with large file
support.
* bug fix: ENOUGH-NAMESTRING works relative to #p"/" as well.
(thanks to Marco Monteiro)
* enhancement: DESTRUCTURING-BIND lambda-list uses &BODY instead of
&REST for better automatic indentation support. (thanks to Matt
Pillsbury)
* optimization: loading generic functions no longer takes O(n^2)
time, proportional to the amount of methods in the generic
function (reported by Todd Sabin and Jeremy Brown)
* optimization: the FIND and POSITION family of sequence functions
are significantly faster on arrays whose element types have been
declared.
* improvements to the Windows port:
+ Intermittent heap corruption problems have been fixed.
(thanks to Alastair Bridgewater)
+ TRACE :ENCAPSULATE NIL (and function end breakpoints) work on
Windows.
+ Lisp is able to unwind foreign exception frames from alien
callbacks. (thanks to Alastair Bridgewater)
New in version 1.0, 2006-11-30
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* improvement: experimental support for threading on FreeBSD/x86.
(thanks to NIIMI Satoshi)
* improvement: runtime option --dynamic-space-size can be used to
set the size of the dynamic space reserved on startup.
* improvement: floating point modes in effect are now saved in
core, and restored on startup.
* improvement: GET-INTERNAL-REAL-TIME now reports the time since
startup, not time since first call to GET-INTERNAL-REAL-TIME.
* improvement: SAVE-LISP-AND-DIE explicitly checks that multiple
threads are not running after *SAVE-HOOKS* have run.
* improvement: writes to CLOS instance slots are type-checked in
code compiled with (SAFETY 3)
* improvement: floating-point exception handling on FreeBSD (thanks
to NIIMI Satoshi)
* improvement: SB-POSIX supports time(2), utime(2) and utimes(2)
(thanks to Zach Beane)
* improvement: support for files larger than 2GB for CL streams and
SB-POSIX on Linux/x86
* improvement: added support for the Shift-JIS external format.
(contributed by NIIMI Satoshi)
* improvement: callbacks are supported on Linux/PPC. (thanks to
Joshua Ross)
* bug fix: compiler bug triggered by a (non-standard) VALUES
declaration in a LET* was fixed. (reported by Kaersten Poeck)
* bug fix: file compiler no longer confuses validated and already
dumped structurres. (reported by Kaersten Poeck)
* bug fix: ADJUST-ARRAY :FILL-POINTER T on an array without a
fill-pointer signals a type-error as required. (thanks to Lars
Brinkhoff)
* bug fix: disassemly of funcallable instances works.
* bug fix: single stepping on PPC.
* bug fix: fix thread-safety problems in the type system (generally
manifesting as nonsensical errors like "STRING is a bad type
specifier for sequences" or "The value 1 is not of type FIXNUM")
* bug fix: version components are handled correctly in
TRANSLATE-PATHNAME (reported by Josip Gracin)
* bug fix: an error is signaled for attempts to displace arrays
with incompatible element types (thanks to Mario Mommer)
* bug fix: more correct handling of wide characters in debug info
(bug reported by Attila Lendvai and fixed by Juho Snellman)
* optimization: method calls with &OPTIONAL or &KEY arguments are
faster and don't cause extra consing
* optimization: MAP and MAP-INTO are significantly faster on
vectors whose elements types have been declared.
* Improvements to SB-SPROF:
+ Support for allocation profiling
+ Reduced profiling overhead, especially for long profiling
runs
* Improvements to the Windows port:
+ floating point exceptions are now reported correctly.
+ stack exhaustion detection works partially.
+ more accurate GET-INTERNAL-REAL-TIME.
+ better RUN-PROGRAM behaviour in case of errors in the child
process.
+ PROBE-FILE now simplifies pathnames correctly.
+ DIRECTORY now works correctly with :WILD-INFERIORS.
+ DECODE-UNIVERSAL-TIME works on times before 00:00:00 January
1st 1970 (although time timezone data will be unreliable).
+ Hyperbolic functions TANH, ASINH, ACOSH, and ATANH work.
New in version 0.9.18, 2006-10-25
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* enhancement: SB-POSIX now supports cfsetispeed(3), cfsetospeed
(3), cfgetispeed(3), cfgetospeed(3), and related constants.
(thanks to Max-Gerd Retzlaff)
* bug fix: two potential GC deadlocks affecting threaded builds.
* bug fix: (TYPEP #\A '(NOT (MEMBER #\" #\{ #\:))) now correctly
returns T (reported by Anton Kazennikov)
* bug fix: the STORE-VALUE restart of CHECK-TYPE works correctly
with non-variable places
* bug fix: remove a race condition in the setting of
funcallable-instance functions, this should make threaded CLOS
code more stable against memory faults.
* bug fix: corruption of specials when unbinding is interrupted by
an asynchronous unwind (reported by Hannu Koivisto)
* improvement: the debugger will now also display local variables
that are only used once, for code compiled with a DEBUG
optimization quality of 2 or higher.
New in version 0.9.17, 2006-09-26
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* feature: weak hash tables, see MAKE-HASH-TABLE documentation
* incompatible change: External-format support for FFI calls. The
SB-ALIEN:C-STRING no longer implies an ASCII external-format.
Instead the string is subject to external-format conversion.
Additionally return values of type SB-ALIEN:C-STRING are by
default of type (SIMPLE-ARRAY CHARACTER), not SIMPLE-BASE-STRING.
For an alien type that behaves like the old SB-ALIEN:C-STRING
type, use (SB-ALIEN:C-STRING :EXTERNAL-FORMAT :ASCII
:ELEMENT-TYPE BASE-CHAR). (thanks to Yaroslav Kavenchuk)
* incompatible change: SB-EXT package no longer contains the
following unused symbols: *GC-NOTIFY-AFTER*, *GC-NOTIFY-BEFORE*,
*GC-NOTIFY-STREAM*, *ERROR-PRINT-LENGTH*, *ERROR-PRINT-LEVEL*,
*ERROR-PRINT-LINES*
* incompatible change: the single-stepper is no longer available on
Alpha, Mips and Sparc platforms.
* minor incompatible change: the direct superclasses of
SB-MOP:FUNCALLABLE-STANDARD-OBJECT are (FUNCTION
STANDARD-OBJECT), not (STANDARD-OBJECT FUNCTION). This makes the
class-precedence-lists of GENERIC-FUNCTION and
STANDARD-GENERIC-FUNCTION comply with the requirement of ANSI
1.4.4.5.
* minor incompatible change: the default stream external format on
non-unicode SBCL is no longer detected from the locale, but is
always ISO-8859-1
* new feature: Add a version of evaluator that uses an interpreter
instead of the compiler. EVAL still uses the compiler by default,
to switch it to use the interpreter, set the value of the
variable SB-EXT:*EVALUATOR-MODE* to :INTERPRET.
* minor incompatible change: the single-stepper REPL has been
merged with the normal debugger (see the "Stepping" heading of
the debugger help for more details). The debugger command STEP
will no longer switch to the single-stepper REPL.
* bug fix: ENOUGH-NAMESTRING on pathnames with no name and a
pattern for a type now works.
* bug fix: loading of default sysinit file works. (thanks to Leonid
Slobodov)
* bug fix: better detection of circularities in the file-compiler.
(reported by Marco Monteiro)
* bug fix: the CL pathname functions now work with files that have
non-ASCII characters in their names (thanks to Yaroslav
Kavenchuk)
* bug fix: The :PTY argument for RUN-PROGRAM will now work on
systems with Unix98 pty semantics.
* bug fix: ASDF-INSTALL will now work with bsd tar.
* bug fix: ASDF-INSTALL uses GNU tar on Solaris (thanks to Josip
Gracin).
* bug fix: timers expiring in dead threads no longer cause a
type-error (reported by Paul "Nonny Mouse").
* bug fix: thanks to more lightweight single-stepper
instrumentation, code compiled with (DEBUG 3) will compile and
execute significantly faster, and will have more accurate
type-inferencing than before
* bug fix: SLOT-VALUE optimizations are no longer done on method
parameters whose bindings are modified
* improvements to the win32 port (thanks to Yaroslav Kavenchuk):
+ bug fix: arguments to RUN-PROGRAM are escaped correctly
+ replace dummy implementations of CL:MACHINE-INSTANCE and
CL:SOFTWARE-VERSION with proper version
New in version 0.9.16, 2006-08-25
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* feature: implemented the READER-METHOD-CLASS and
WRITER-METHOD-CLASS portion of the Class Initialization Protocol
as specified by AMOP.
* incompatible change: variable SB-EXT:*USE-IMPLEMENTATION-TYPES*
no longer exists.
* optimization: faster LOGCOUNT implementation on x86 and x86-64
(thanks to Lutz Euler)
* optimization: hashing of general arrays and vectors has been
improved. (reported by Any Fingerhut)
* enhancement: SB-INTROSPECT is now able to find definitions of
profiled functions. (thanks to Troels Henriksen)
* enhancement: compiler-macro expansion applies now to FUNCALL
forms as well, allowing compiler-macros for SETF-functions to
expand.
* enhancement: step-instrumentation no longer wraps known
single-value functions with multiple-value context, allowing
better type inference.
* fixed bug #337: use of MAKE-METHOD in method combination now
works even in the presence of user-defined method classes.
(reported by Bruno Haible and Pascal Costanza)
* fixed bug #339(c): if there are applicable methods not part of
any long-form method-combination group, call
INVALID-METHOD-ERROR. (reported by Bruno Haible)
* fixed bug #361: the :FUNCTION initarg in the protocol for
initialization of methods can now be used to override
internally-produced optimized functions. (reported by Bruno
Haible)
* bug fix: extensions of MAKE-METHOD-LAMBDA which wrap the
system-provided lambda expression no longer cause warnings about
unbound #:|pv-table| symbols.
* bug fix: improved the handling of type declarations and the
detection of violations for keyword arguments with non-constant
defaults.
* bug fix: potentially erronous calls to PATHNAME and
MERGE-PATHNAMES were being flushed in some cases. (reported by
Richard Kreuter)
* bug fix: compiled calls to TYPEP were mishandling obsolete
instances. (reported by James Bielman and Attila Lendvai)
* bug fix: format strings with ~> without matching ~< no longer
trigger an AVER, but signal an understandable error instead.
(reported by Antonio Martinez)
* bug fix: specifying an output-file without a pathname-type for
COMPILE-FILE or COMPILE-FILE-PATHNAME resulted in using the type
of input-file instead of "fasl". (reported by Robert Dodier)
* bug fix: compiler-macro lambda-list parsing of FUNCALL forms.
(reported by James Y Knight).
* bug fix: compiler-macros-function did not consider the
environment argument for shadowing by local functions.
* bug fix: compiler-macros expansion was inhibited by local INLINE
declarations.
* bug fix: inline expansions of known functions were subject to
step-instrumentation in high debug policies, leading to problems
with type-inference.
* bug fix: compiler failed to differentiate between different CONS
types in some cases.
* bug fix: fixed input, output and error redirection in RUN-PROGRAM
for win32. (thanks to Mike Thomas and Yaroslav Kavenchuk)
* bug fix: #368: incorrect use of expressed vs. upgraded array
element type.
* bug fix: #306a: more precise unions of array types.
* thread-safety improvements:
+ CONDITION-WAIT could return early on Linux, if the thread was
interrupted and subsequently continued with SIGCONT.
+ STABLE-SORT and ADJUST-ARRAY were not reentrant.
New in version 0.9.15
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* added support for the ucs-2 external format. (contributed by Ivan
Boldyrev)
* minor incompatible change: pretty printing of objects of type
(cons symbol) is, in the default pprint-dispatch-table, now
sensitive to whether the symbol satisfies FBOUNDP. (thanks to
Marcus Pearce)
* minor incompatible change: SB-MOP:FINALIZE-INHERITANCE is now
called later in a class's lifetime, possibly as late as when the
first instance of the class is created. Previously,
SB-MOP:FINALIZE-INHERITANCE was called by the system as soon as a
class became finalizeable.
* fixed bug: FILE-POSITION sometimes returned inconsistent results
for multibyte external-format streams. (thanks to "vbzoli")
* fixed bug: CHANGE-CLASS would fail to preserve the values of
slots with :ALLOCATION :CLASS inherited from superclasses of the
original class.
* fixed bug: anonymous classes can now be created using the :NAME
initarg and MAKE-INSTANCE / REINITIALIZE-INSTANCE, as specified
by AMOP. (reported by Leonid Slobodov on comp.lang.lisp)
* fixed bug: core-files saved with :EXECUTABLE T can again be
executed when SBCL_HOME isn't set. (reported by James Knight)
* fixed bug: toplevel LOCALLY forms with declarations could
occasionally get miscompiled. (reported by Yaroslav Kavenchuk)
* fixed bug: printing from several different threads using
different values of *print-case* could cause invalid output, due
to some internal special variables of the printer not being bound
thread-locally (reported by Max Mikhanosha)
* fixed bug: SPECIALIZER metaobjects (including anonymous classes
and EQL-SPECIALIZERs) can be used as specializers to DEFMETHOD.
(reported by Pascal Costanza)
* fixed bug: FINALIZE-INHERITANCE is called from
REINITIALIZE-INSTANCE on classes when the class has previously
been finalized, as required by AMOP.
* minor code generation optimizations:
+ better register allocation in CLOS dispatching functions
+ overflow detection when coercing signed bytes to fixnums on
x86-64
+ is now implemented with one IMUL instruction instead of three
shifts
+ more efficient bit-vector access on x86 and x86-64
+ more efficient access to raw structure slots on x86 and
x86-64
* fixed some bugs revealed by Paul Dietz' test suite:
+ ENSURE-DIRECTORIES-EXIST.8: ENSURE-DIRECTORIES-EXIST must
return its argument.
New in version 0.9.14, 2006-06-26
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* feature: thread support on Solaris/x86, and experimental thread
support on OS X/x86.
* feature: SBCL now tries to signal a STORAGE-CONDITION when
running out of heap.
* feature: SBCL now provides USE-VALUE and STORE-VALUE restarts in
the default method for SLOT-UNBOUND.
* minor incompatible change: prevent the user from specializing the
new-value argument to SB-MOP:SLOT-VALUE-USING-CLASS. It's
somewhat counter to the intent of the protocol, I (CSR) think,
and additionally it just doesn't work in SBCL as currently
implemented, thanks to optimizations (that are always valid for
the other three SLOT-VALUEish functions, but not for the setter).
* minor incompatible change: the :SB-LDB feature is now enabled by
default, and DISABLE-DEBUGGER and ENABLE-DEBUGGER also affect the
low-level debugger.
* enchancement: RUN-PROGRAM is now able to extract the
file-descriptor from SYNONYM-STREAM and TWO-WAY-STREAM provided
they can be decomposed down to an SB-SYS:FD-STREAM, allowing
direct communication in more cases. Temporary files and pipes are
still used as a fallback strategy.
* thread-safety: DECODE-UNIVERSAL-TIME & GET-DECODED-TIME depended
on the non-reentrant C functions localtime(3) and gmtime(3).
* bug fix: global optimization policy was not visible in LOCALLY
and MACROLET forms.
* bug fix: class objects can be used as specializers in methods.
(reported by Pascal Costanza)
* bug fix: native unparsing of pathnames with :DIRECTORY NIL failed
with a type error. (reported by blitz_ on #lisp)
* bug fix: unparsing logical pathnames with :NAME :WILD :TYPE NIL
failed with a type error. (reported by Pascal Bourguignon)
* bug fix: merging pathnames against defaults with :DIRECTORY
starting with '(:RELATIVE :BACK) should preserve the :BACK.
(reported by James Y Knight)
* bug fix: saving large (>2GB) cores on x86-64 now works
* bug fix: a x86-64 backend bug when compiling (setf aref) with a
constant index and a (simple-array (signed-byte 32)) array
* bug fix: NAME-CHAR on an invalid symbol no longer signals an
error (patch by Robert J. Macomber)
* feature: TIME now displays the amount of run-time spent in GC
* bug fix: The debugger now does a better job of respecting (PUSH '
(*PRINT-CIRCLE* . T) SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*) when
printing SB-DEBUG:*DEBUG-CONDITION*. (This is a debugger-only
workaround for bug 403.)
* bug fix: floating point exception handling now works on FreeBSD
(thanks to NIIMI Satoshi)
* fixed some bugs revealed by Paul Dietz' test suite:
+ MISC.641: LET-conversion were not supposed to work in late
compilation stages.
* improvements to the Win32/x86 port:
+ GET-INTERNAL-RUN-TIME implemented, thanks to Frank Buss.
+ improved SB-BSD-SOCKETS support, thanks to Timothy Ritchey.
New in version 0.9.13, 2006-05-27
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* new feature: source path information is generated for
macro-expansion errors for use in IDE's like Slime (thanks to
Helmut Eller)
* bug fix: calls to the compiler no longer modify *RANDOM-STATE*
* bug fix: compiler does not loop forever on an invalid type in
TYPEP.
* improvement: compilation of most CLOS applications is
significantly faster
* optimization: added a limited bytecode compiler for simple
toplevel forms, speeding up compilation and FASL loading
* bug fix: the statistical profiler now properly distinguishes
anonymous functions
New in version 0.9.12, 2006-04-26
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* minor incompatible change: in sbcl-0.9.11 (but not earlier
versions) SB-MOP:FINALIZE-INHERITANCE would recursively descend
into subclasses of the finalized class. Now user calls to
FINALIZE-INHERITANCE finalize just the one class, and calls by
the system return before any subclasses are finalized.
* minor incompatible change: The reader no longer ignores errors
regarding non-existent packages in #+ and #- feature tests.
* new feature: command line options --no-sysinit, --no-userinit to
inhibit loading the corresponding init files
* new feature: add a generic function SOCKET-SEND to
SB-BSD-SOCKETS, for sending data through UDP sockets (thanks to
Francois-Rene Rideau)
* minor incompatible change: SIGPIPE is ignored and "Broken pipe"
error is signalled instead (thanks to Francois-Rene Rideau)
* minor incompatible change: Error signalling behaviour of lexical
operations violating package locks has changed slightly. Refer to
documentation on package locks for details.
* enhancement: EVAL can process IF-expressions without resorting to
the compiler.
* bug fix: Some operations involving SIN, COS, or TAN weren't being
constant-folded properly due to missing out-of-line functions.
(reported by Mika Pihlajamaki)
* bug fix: LISTEN sometimes returned T even in cases where no data
was immediately available from the stream
* fixed bug: types of the last two arguments to
SET-SYNTAX-FROM-CHAR were reversed. (reported by Levente
Meszaros)
* fixed bug: Tests for the (VECTOR T) type gave the wrong answer
when given a vector displaced to an adjustable array. (reported
by Utz-Uwe Haus)
* bug fix: derivation of float boundaries from numbers outside the
appropriate float range (reported by John Wiseman)
* bug fix: MAKE-LOAD-FORM-SAVING-SLOTS accepts en empty slot name
list.
* bug fix: precomputing cache entries for generic functions with
some subclasses of specializers as yet invalid does not attempt
to fill a cache line with a negative offset. (reported by Levente
Meszaroz)
* improvements to DOCUMENTATION for TYPE and STRUCTURE doc-types:
allow condition class objects as arguments to DOCUMENTATION and
(SETF DOCUMENTATION); only find and set documentation for
structure names for the STRUCTURE doc-type. (suggested by Gary
King)
* improvements to the Win32/x86 port:
+ (user-homedir-pathname) and default initialization file
locations now know about the user's "Documents and Settings"
directory (thanks to Yaroslav Kavenchuk)
+ run-program is implemented (thanks to Mike Thomas)
+ sockets support (thanks to Timothy Ritchey)
+ better backtrace support (thanks to Alastair Bridgewater)
+ sb-grovel supported
+ asdf-install and sb-posix work somewhat
+ capable of running Slime using SWANK:*COMMUNICATION-STYLE*
NIL
* improvements to the Solaris/x86 port:
+ works on Solaris 11/Solaris Express
+ floating-point exception handling support
+ support for the breakpoint-based TRACE :ENCAPSULATE NIL
facility
* fixed some bugs revealed by Paul Dietz' test suite:
+ REMOVE-METHOD returns its generic function argument even when
the method is not one of the generic functions' methods.
+ objects declared as MEMBER types can be admissible arguments
to structure accessors.
+ printing characters should simply be printed by the FORMAT
~:C directive.
+ compiler failure when compiling functions with hairy constant
defaults for optional parameters.
+ compiler produces wrong code when MAYBE-INLINE-expanding a
function, which is already optimized.
New in version 0.9.11, 2006-03-26
Back to top
* new platform: experimental support for SBCL x86/Darwin, including
MacOS X 10.4.5 on Intel.
* new feature: Unicode character names are now known to the system
(through CHAR-NAME and NAME-CHAR).
* new feature: the filesystem location of SBCL's core file is
exposed to lisp through the variable SB-EXT:*CORE-PATHNAME*.
* minor incompatible change: the contrib modules SB-POSIX and
SB-BSD-SOCKETS no longer depend on stub C libraries; the intent
of this change is to make it easier to distribute
location-independent binaries.
* bug fix: as implied by AMOP, standardized classes no longer have
slots named by external symbols of public packages. (reported by
Pascal Costanza)
* optimization: calling functions via constant symbols -- as in
(FUNCALL 'FOO) -- is now roughly as efficient as calling them via
the function object as in (FUNCALL #'FOO).
* optimization: on x86 and x86-64, the calling convention for the
case of dealing with an unknown number of values has been altered
to be friendlier to the prediction heuristics implemented,
particularly with reference to CALL and RET pairing. (thanks to
Alastair Bridgewater)
* optimization: on x86, the code for access to thread-local symbol
values and binding/unbinding of thread-local symbols is smaller.
(thanks to Alastair Bridgewater)
* enhancement: CONSTANTP is now able to determine constantness of
more complex forms, including calls to constant-foldable
standardized functions and some special forms beyond QUOTE.
* fixed bug: occasional GC crashes on Solaris/x86
* optimization: x86-64 supports stack allocation of results of
simple calls of MAKE-ARRAY, bound to variables, declared
DYNAMIC-EXTENT
* enchancement: the PROCESS-INPUT and -OUTPUT streams created by
SB-EXT:RUN-PROGRAM can be used for both character and byte IO
(thanks to James Knight)
* fixed bug: CL:LISTEN always returns NIL at end of file, as
required by the standard (thanks to Stephen Compall)
New in version 0.9.10, 2006-02-27
Back to top
* new feature: new SAVE-LISP-AND-DIE keyword argument :EXECUTABLE
can be used for bundling the runtime and the core file into one
executable binary. This feature is not currently supported on all
SBCL platforms. (thanks to James Bielman and NIIMI Satoshi)
* new feature: a generational or ephemeral garbage collector is now
the default on the PowerPC platform (both Linux and Darwin). The
old Cheney (stop and copy) collector is a build-time option.
(thanks to Cyrus Harmon, after Raymond Toy)
* minor incompatible change: the method by which SBCL finds its
contributed modules has changed; it no longer relies on symbolic
links from an $SBCL_HOME/systems directory, but searches directly
in the subdirectories of $SBCL_HOME.
* enhancement: the dynamic heap size on the Linux/PPC platform is
markedly larger, even using the older Cheney garbage collector.
* fixed bug #399: full call to DATA-VECTOR-REF in accesses to
certain complicated string types. (reported by Gary King)
* fixed bug: STRING-TO-OCTETS and OCTETS-TO-STRING did not convert
character codes. (thanks to Yaroslav Kavenchuk and Ivan Boldyrev)
* fixed bug: DOCUMENTATION on structures no longer signals an error
if no structure type of the right name exists. (reported by Glenn
Ehrlich)
* fixed bug: compiled calls to MAKE-INSTANCE where there is an
applicable non-standard primary or :AROUND method on
INITIALIZE-INSTANCE or SHARED-INITIALIZE and a non-keyword
initarg no longer cause unbound variable errors. (reported by
Kevin Reid)
* fixed bug: metacircle resolution in cases where methods have
slots added before the slots from STANDARD-METHOD. (reported by
Jean Bresson)
* fixed bug: the Power PC assembly code for calling into lisp
sometimes computed its return address wrongly (depending on the
15th bit of the address, fixed at link time). This used to
manifest itself in a segmentation violation while building PCL.
(reported by Kevin Rosenberg, Eric Marsden, Lars Brinkhoff and
many others over the years)
* fixed bug: ROOM no longer reports silly numbers for stack usage
if the stack pointer (treated as a signed integer) is negative.
(thanks to Peter van Eynde)
New in version 0.9.9, 2006-01-26
Back to top
* new platform: experimental support for the Windows operating
system has been added. (thanks to Alastair Bridgewater)
* fixed several bugs in and robustified the PPC FFI (including
callbacks). (thanks to Cyrus Harmon and Heiner Schwarte)
* bug fix: allow non-simple string symbol names (reported by Paul
Dietz)
* bug fix: interrupt handling on NetBSD (thanks to Richard M
Kreuter)
* bug fix: saving a core corrupted callbacks on x86/x86-64
* bug fix: closed a loophole in metacircularity detection and
grounding in the PCL implementation of CLOS.
* bug fix: TRUENAME on "/" no longer returns a relative pathname.
(reported by tomppa on #lisp)
* bug fix: clear the direction flag on Lisp -> C transitions, as
required by the x86-64 ABI. Fixes mysterious GC crashes on SuSE.
(reported by Andrej Grozin and Hendrik Maryns)
* optimization: major improvements to GC efficiency on GENCGC
platforms
* optimization: faster implementation of EQUAL
* optimization: emit more efficient opcodes for some common
immediate->register MOV instructions on x86-64. (thanks to Lutz
Euler)
* optimization: several other minor code-generation improvements on
x86-64
* fixed segfaults on x86 FreeBSD 7-current. (thanks to NIIMI
Satoshi)
New in version 0.9.8, 2005-12-27
Back to top
* minor incompatible change: (SETF CLASS-NAME) and (SETF
GENERIC-FUNCTION-NAME) are generic functions once more (reverting
the change in the 0.9.7 release). (SETF CLASS-NAME) is specified
by ANSI as a generic function, and for consistency (SETF
GENERIC-FUNCTION-NAME) is treated likewise.
* fixed bug #233.b: make constraint propagation notice when a
variable value is changed after it is referenced but before it is
used
* fixed bug #296: no more arbitrary behaviour from filenames with
odd characters as --load arguments. (reported by Adam Warner)
* fixed bug #390: :CHARACTER-SET pathname components now work as
expected. (reported by Tim Daly Jr)
* fixed bug #391: complicated :TYPE intersections in slot
definitions no longer cause an error in PCL internals.
* fixed bug #392: plugged a hole in the obsolete-instance protocol.
* bug fix: FILE-STRING-LENGTH is now external-format sensitive,
returning the number of octets which would be written to the
file-stream. (thanks to Robert J. Macomber)
* bug fix: the SB-SIMPLE-STREAMS contrib passes external-format
arguments to the internal stream functions. (thanks to David
Lichteblau)
* bug fix: stack exhaustion is now handled on the x86/SunOS
platform. (thanks to Daisuke Homma)
* bug fix: more accurate ROOM results on GENCGC platforms
* optimization: improved type inference for arithmetic-for index
variables in LOOP
* optimization: faster floating-point SQRT on x86-64
* fixed some bugs revealed by Paul Dietz' test suite:
+ DOCUMENTATION returns NIL instead of "" for method
combinations that don't have a docstring
New in version 0.9.7, 2005-11-28
Back to top
* minor incompatible change: (SETF CLASS-NAME) and (SETF
GENERIC-FUNCTION-NAME) are no longer generic functions, and
therefore are not customizeable by user code (as seems to be at
least permitted and maybe required by AMOP). As a consolation,
however, the SBCL implementation of these functions now calls
REINITIALIZE-INSTANCE as specified by AMOP.
* bug fix: slot-definition documentation is propagated as per ANSI
7.6.2 to EFFECTIVE-SLOT-DEFINITIONS.
COMPUTE-EFFECTIVE-SLOT-DEFINITION now receives a :DOCUMENTATION
argument, as do eslotd initialization methods. (from Pascal
Costanza's "Closer" project)
* bug fix: REINITIALIZE-INSTANCE on generic functions calls
COMPUTE-DISCRIMINATING-FUNCTION (almost) unconditionally, as
specified by AMOP.
* bug fix: it is now possible to have more than one subclass of
STANDARD-GENERIC-FUNCTION without causing stack overflow.
(reported by Bruno Haible, Pascal Costanza and others)
* bug fix: the dependent update protocol now works for generic
functions. (thanks to Gerd Moellmann; reported by Bruno Haible
and Pascal Costanza)
* bug fix: condition-class instances corresponding to
DEFINE-CONDITION forms are now created eagerly. (reported by
Kalle Olavi Niemitalo on comp.lang.lisp)
* bug fix: floating point printing is more accurate in some
circumstances. (thanks to Simon Alexander)
* bug fix: *COMPILE-FILE-PATHNAME* now contains the user's pathname
merged with *DEFAULT-PATHNAME-DEFAULTS*.
* bug fix: callbacks on OS X now preserve stack-alignment. (thanks
to Cyrus Harmon)
* enhancement: the x86-64 disassembler is much better at
disassembling SSE instructions. (thanks to Lutz Euler)
* enhancement: CHECK-TYPE on a variable now allows type-inference
(thanks to Vincent Arkesteijn)
* optimization: improved performance of EUC-JP external format.
(thanks to NIIMI Satoshi)
* optimization: performance improvements to IO on file streams of
:ELEMENT-TYPE CHARACTER
* optimization: much faster memory allocation on x86-64
* optimization: faster garbage collections (latency and throughput)
on gencgc
* optimization: faster bignum subtraction and division on x86 and
x86-64 (thanks to Lutz Euler)
* optimization: more accurate type-inference for loops that use a
floating point index variable or a negative step.
New in version 0.9.6, 2005-10-27
Back to top
* bug fix: add a workaround to SBCL looping infinitely at startup
on Linux kernels with apparently buggy implementations of
personality(). (thanks to Svein Ove Aas)
* bug fix: Unicode symbols are correctly printed in LDB backtraces
(thanks to David Lichteblau)
* bug fix: local bindings shadow global symbol macros for
macroexpansion. (reported by Matthew D Swank on comp.lang.lisp)
* optimization: non-open coded uses of numeric comparison operators
(e.g. >) no longer cons when called with more than one parameter
on platforms supporting dynamic-extent allocation.
* enhancement: saving cores with foreign code loaded is now
supported on MIPS/Linux in addition to the previously supported
platforms.
* bug fix: FIND-RESTART now tests for activity, not applicability
when given a restart object as identifier. (reported by Helmut
Eller for CMUCL)
* bug fix: division by zero in sb-sprof when no samples were
collected
* bug fix: a race when a slow to arrive sigprof signal killed sbcl
* bug fix: asdf-install uses CRLF as required by the HTTP spec.
(thanks to Alexander Kjeldaas)
* new feature: ignoring the return values of destructive functions
like NREVERSE signals a compile-time style-warning. (thanks to
Kevin Reid)
* new feature: the alignment of alien structure fields can be
explicitly specified. (thanks to Cyrus Harmon)
* bug fix: run cleanup forms (in all threads) when receiving a
SIGTERM and dump core on SIGQUIT
* threads
+ incompatible change: threads do not inherit values of
specials from their parents (see manual)
+ bug fix: threads stacks belonging to dead threads are freed
by the next exiting thread, no need to gc to collect thread
stacks anymore
+ minor incompatible change: INTERRUPT-THREAD-ERROR-ERRNO
removed
+ WITH-RECURSIVE-LOCK can be nested in a WITH-MUTEX for the
same lock
+ bug fix: dynamic variable and thread start related gc lossage
+ bug fix: job control (SIGSTOP/SIGCONT) no longer confuses
threads suspended for gc
* fixed some bugs revealed by Paul Dietz' test suite:
+ SUBTYPEP is slightly more accurate on heinously complicated
CONS types where some of the members have uncertain (in the
NIL, NIL sense) type relationships to each other.
* GENCGC
+ Cores produced by SAVE-LISP-AND-DIE on GENCGC platforms are
no longer purified unless :PURIFY T is explicitly specified.
+ Non-purified cores are significantly smaller than before
New in version 0.9.5, 2005-09-27
Back to top
* new feature: timers based on Zach Beane's excellent timer package
* added support for the following external formats: koi8-u,
x-mac-cyrillic, cp437, cp850, cp852, cp855, cp857, cp860, cp861,
cp862, cp863, cp864, cp865, cp866, cp869, cp874, iso-8859-2,
iso-8859-3, iso-8859-4, iso-8859-5, iso-8859-6, iso-8859-7,
iso-8859-8, iso-8859-9, iso-8859-10, iso-8859-11, iso-8859-13,
iso-8859-14, cp1250, cp1251, cp1252, cp1253, cp1254,
cp1255,cp1256, cp1257, cp1258 (contributed by Ivan Boldyrev)
* incompatible change: a threaded SBCL will no longer revert to
non-threaded mode on non-NPTL systems, but refuse to start
entirely.
* bug fix: interrupts are disabled until startup is complete; no
more sigsegvs when receiving a signal to soon
* optimization: faster 32-bit SB-ROTATE-BYTE:ROTATE-BYTE on non-x86
/ppc platforms
* bug fix: add a workaround for the memory randomization features
in Linux kernels >= 2.6.12 that interfere with SBCL's memory
maps. This workaround will only be in effect on systems with the
proc filesystem mounted.
* bug fix: printing objects of type HASH-TABLE signals a
PRINT-NOT-READABLE error when *READ-EVAL* is NIL. (reported by
Fare Rideau)
* bug fix: GET-INTERNAL-REAL-TIME now works even for processes that
have been running for over 50 days. (reported by Gilbert Baumann)
* bug fix: the logic for getting names of functions gets less
confused when confronded with alternate-metaclass
funcallable-instances. (reported by Cyrus Harmon)
* bug fix: FUNCTIONP and (LAMBDA (X) (TYPEP X 'FUNCTION)) are now
consistent, even on internal alternate-metaclass objects.
* bug fix: flush closure information collected by physical
environment analysis prepass before the main pass. (bug reported
by Vasile Rotaru)
* bug fix: compiler pack phase does not modify a hashtable, which
is iterated. (reported by Bryan O'Connor, fixed by Rob
MacLachlan)
* bug fix: backquote does not optimize (LIST* x y) to CONS when x
may be expanded. (reported by Alexander on c.l.l)
* bug fix: no more style-warnings when compiling code using LAST
under high-SPEED low-SPACE settings. (reported by David Wallin
aka froog on #lisp)
* fixed some incompatibilities between SBCL's MOP and the MOP
specified by AMOP:
+ the METAOBJECT class is now implemented;
+ FUNCALLABLE-STANDARD-OBJECT is now a subclass of
STANDARD-OBJECT, as required;
+ the classes STANDARD-CLASS and FUNCALLABLE-STANDARD-CLASS are
now compatible (as required by VALIDATE-SUPERCLASS); there
remains a consistency requirement over the presence or
absence of the FUNCTION class in the superclass list of
finalized classes; see the manual for more details;
+ the :AROUND method for COMPUTE-SLOTS on
FUNCALLABLE-STANDARD-CLASS now honours the primary method's
requested slot ordering.
* threads
+ bug fix: parent thread now can be gc'ed even with a live
child thread
+ bug fix: binding a special with PROGV to no value is not the
same as that symbol not having been bound (thanks to Hannu
Koivisto)
+ bug fix: binding specials is thread safe (thanks to Hannu
Koivisto)
+ bug fix: interrupt handlers are now per-process, RUN-PROGRAM
and SB-SPROF do not die with 'no handler for signal XX in
interrupt_handle_now(..)' anymore
+ bug fix: WITH-TIMEOUT works with multiple running threads
* fixed some bugs revealed by Paul Dietz' test suite:
+ ENSURE-GENERIC-FUNCTION should take a method class object for
the :method-class keyword argument.
New in version 0.9.4, 2005-08-26
Back to top
* new port: the Solaris operating system on x86 processors is now
mostly supported, though some rough edges in the environment
remain. (thanks to Daisuke Homma)
* enhancement: SBCL on MIPS platforms now has a much larger dynamic
space for its heap. (thanks to Thiemo Seufer)
* optimization: SBCL on MIPS platforms now supports dynamic-extent
closures. (thanks to Thiemo Seufer)
* minor incompatible change: eof selects abort in the debugger.
* minor incompatible change: *INVOKE-DEBUGGER-HOOK* is run before
*DEBUGGER-HOOK* => *DEBUGGER-HOOK* is not run when the debugger
is disabled.
* minor incompatible change: SB-KERNEL:INSTANCE-LAMBDA is
deprecated, and will go away in a future revision of SBCL.
* minor incompatible change: GC-ON and GC-OFF are no longer
implemented with a counter, it does not matter how many times gc
is switched on or off
* bug fix: discriminating functions for generic function classes
with non-standard methods for COMPUTE-APPLICABLE-METHODS no
longer make invalid assumptions about method precedence order.
(reported by Bruno Haible)
* bug fix: TRUNCATE now correctly signals division by zero on MIPS
platforms. (thanks to Thiemo Seufer)
* bug fix: degree sign () could not be encoded in KOI8-R.
* bug fix: correct pathname printing with printer escaping is on.
(thanks to Kevin Reid)
* bug fix: complex VOP definitions in "user-space" no longer
trigger package locks. (reported by Zach Beane)
* fixed bug 343: SB-KERNEL:INSTANCE-LAMBDA is no longer necessary
for funcallable-instance functions, and is no different from
regular LAMBDA.
* bug fix: PARSE-INTEGER no longer depends on the whitespaceness of
characters in the current readtable. (reported by Nicholas Neuss)
* bug fix: SUBTYPEP on various CONS types returns more a more
accurate acknowledgment of its certainty.
* optimizations: REMOVE-DUPLICATES now runs in linear time on lists
in some cases. This partially fixes bug 384.
* flush all standard streams before prompting in the REPL and the
debugger.
* bug fix: signal handling and triggering gc do not conflict
directly anymore, in particular a high frequency sb-sprof does
not prevent gc from running
* bug fix: DECODE-UNIVERSAL-TIME now uses a more reasonable
approximation for timezone and DST information between the
universal time epoch and the smallest negative 32-bit time_t.
* bug fix: ENCODE-UNIVERSAL-TIME no longer errors when passed the
year 1899 so long as the encoded time is non-negative.
* bug fix: on the x86 platform, SB-ROTATE-BYTE:ROTATE-BYTE returns
the correct answer for non-constant rotate amounts when
performing an inline 32-bit rotation.
* threads
+ bug fix: RELEASE-FOREGROUND doesn't choke on session lock if
there is only one thread in the session
+ bug fix: memory leak for streams created in one thread and
written to in another
+ bug fix: lockup when compiled with gcc4
+ bug fix: race that allows the gc to be triggered when gc is
inhibited
+ bug fix: one less memory fault in INTERRUPT-THREAD, again
+ bug fix: gc and INTERRUPT-THREAD don't hang when the RT
signal queue is full
+ bug fix: finished threads are gc'ed properly
* fixed some bugs revealed by Paul Dietz' test suite:
+ CALL-NEXT-METHOD signals an error (in safe code) when the
call has arguments with a different set of applicable methods
from the orignal arguments.
+ The type error thrown by MAP now has a correct expected-type
cell.
+ DISASSEMBLE now throws a TYPE-ERROR when its argument does
not name a compiled function.
+ Three MISC tests where a large bignum was improperly coerced
to a float that couldn't represent that bignum during type
derivation were fixed.
+ SUBTYPEP can now handle types involving the negation of a
list-form FUNCTION type.
+ SUBTYPEP also now handles certain COMPLEX type specifiers
such as (COMPLEX (AND RATIO (NOT FIXNUM))).
+ READ-BYTE and WRITE-BYTE no longer take stream designators.
New in version 0.9.3, 2005-07-25
Back to top
* New feature: Experimental support for bivalent streams: streams
opened with :element-type :default now allow character and binary
(unsigned-byte 8) I/O
* Support for the koi8-r external format. (thanks to Ivan Boldyrev)
* Bug fix: OPEN no longer fails when *PRINT-READABLY* is T. (thanks
to Zach Beane)
* bug fix: no more highly sporadic "couldn't check whether ~S is
readable" when reading a stream and an interrupt hits in the
middle of a select system call
* compiler better recognizes complex arrays (reported by Eduardo
Munoz)
* bug fix: out-of-line SB-SYS:FOREIGN-SYMBOL-ADDRESS did not work
for variables on SBCL built with linkage-tables. (reported by
Luis Oliveira)
* various error reporting improvements.
* optimizations: LOGNOR on fixnums is improved in the MIPS backend.
(Thanks to Thiemo Seufer)
* bug fix: nested reader invokations work correctly
* bug fix: it is possible to have simultaneous references to
foreign code and foreign data with the same name.
* threads
+ added x86-64 support
+ incompatible change: the threading api now works with thread
objects instead of thread ids
+ bug fix: threads are protected from signals and interruption
when starting up or going down
+ bug fix: a race where an exiting thread could lose its stack
to gc
+ bug fix: don't halt on infinite error in threads if possible
+ fixed numerous gc deadlocks introduced in the pthread merge
+ bug fix: fixed thread safety issues in read and print
+ bug fix: debugger doesn't hang on session lock if interrupted
at an inappropriate moment
+ bug fix: run-program is now thread safe(r)
+ bug fix: inner with-recursive-lock no longer releases the
mutex
* fixed a bug in (DECODE-UNIVERSAL-TIME 0) (reported by Paul Dietz)
* fixed some bugs revealed by Paul Dietz' test suite:
+ TYPE-ERRORs from signalled by COERCE now have DATUM and
EXPECTED-TYPE slots filled.
+ MULTIPLE-VALUE-SETQ always returns the primary value of the
values form.
+ MAKE-CONDITION accepts classes as type-designators.
+ COMPILE may never return NIL.
+ ENCODE-UNIVERSAL-TIME now guards against times out of Unix's
range before calling Unix time functions
New in version 0.9.2, 2005-06-27
Back to top
* numerous signal handling fixes to increase stability
* Support for EUC-JP external format. (thanks to NIIMI Satoshi)
* minor incompatible change: we now correctly canonize default
initargs, making them be a list of (INITARG INITFORM
INITFUNCTION) as per the MOP, rather than the historical (INITARG
INITFUNCTION INITFORM). (reported by Bruno Haible)
* new feature: WITH-COMPILATION-UNIT now accepts a non-standard
:SOURCE-PLIST option. See (DOCUMENTATION #'WITH-COMPILATION-UNIT
T) for more information.
* TRUENAME and PROBE-FILE now correctly resolve symlinks even if
the pathname is a directory pathname.
* SB-SPROF now works (more) reliably on non-GENCGC platforms.
* dynamic space size on PPC has been increased to 768Mb. (thanks to
Cyrus Harmon)
* SB-MOP:ENSURE-CLASS-USING-CLASS now accepts a class as the
:METACLASS argument in addition to a class name. (reported by
Bruno Haible for CMUCL, patch for CMUCL by Gerd Moellmann)
* RESTART-CASE can now be wrapped around CALL-METHOD forms.
(reported by Bruno Haible; patch from Gerd Moellmann)
* bug fix: sbcl runtime can now be compiled with gcc4 (thanks to
Sascha Wilde)
* bug fix: more cleanups to the floating point exception handling
on x86-64 (thanks to James Knight)
* bug fix: the compiler does not try to constant fold calls of
COERCE and BIT-* functions when they return freshly constructed
objects. (reported by Nikodemus Siivola and Paul Dietz)
* optimization: improved the MIPS versions of generic (in the
generic sense) arithmetic routines. (thanks to Thiemo Seufer)
* optimization: direct conversion of (unsigned-byte 32) to floats
on the PowerPC platform.
* optimization: structure instances with raw slots now use less
memory, and probably show better memory locality. (thanks to
David Lichteblau)
* optimization: DYNAMIC-EXTENT declarations for lists and closures
are treated as requests for stack allocation on the x86-64,
Alpha-32, PPC and SPARC platforms.
* contrib improvement: it's harder to cause SOCKET-CLOSE to close()
the wrong file descriptor; implementation of SOCKET-OPEN-P.
(thanks to Tony Martinez)
* threads
+ gcing a dead thread can no longer lead to lockups
+ threads block signals until they are set up properly
+ errno is no longer shared by threads
+ interrupt-thread restores the eflags register on x86
+ fixed some lockups due to gc/thread interaction
* fixed some bugs revealed by Paul Dietz' test suite:
+ invalid dotted lists no longer raise a read error when
*READ-SUPPRESS* is T
+ signal an error if a symbol that names a declaration is used
as the name of a type, or vice versa
+ allow using the (declare (typespec var*)) abbreviation for
(declare (type typespec var*)) with all type specifiers
+ circularity detection works properly with
PPRINT-LOGICAL-BLOCK
+ always return NIL from PPRINT-POP when OBJECT is NIL
+ don't signal errors when pretty-printing malformed LABELS,
FLET or MACROLET forms
+ declarations in a DOLIST body are also in scope for the
DOLIST return-form
+ COMPILE-FILE accepts all pathname designators as INPUT-FILE
and OUTPUT-FILE
+ the ELEMENT-TYPE keyword argument to WITH-OUTPUT-STREAM is
always evaluated
New in version 0.9.1, 2005-05-26
Back to top
* fixed cross-compiler leakages that prevented building a 32-bit
target with a 64-bit host compiler.
* fixed a bug in CLOSE :ABORT T: no longer attempts to remove files
opened with :IF-EXISTS :OVERWRITE.
* fixed bug 281: error for an invalid qualifier in a short-form
method combination method is not signalled until the faulty
method is called.
* bug fix: iteration variable type inferrer failed to deal with
open intervals. (reported by Alan Shields)
* bug fix: dynamically loading (via LOAD-SHARED-OBJECT or similar)
"frameworks" on Mac OS X no longer causes an EXC_BAD_ACCESS if
two or more runtime options were provided to the sbcl binary.
* compiled code is not steppable if COMPILATION-SPEED >= DEBUG.
* contrib improvement: implement SB-POSIX:MKSTEMP (Yannick Gingras)
* optimization: there's now a fast-path for fixnum arguments in the
generic subtraction routines on x86/x86-64. (Thanks to Lutz
Euler)
* optimization: the code generated on x86-64 is more compact thanks
to not outputting unnecessary prefix bytes. (Thanks to Lutz
Euler)
* bug fix: floating-point exception handling now partly works on
x86-64. (Thanks to James Knight)
* improvement to the MIPS backend from Thiemo Seufer: C-style
64-bit long long arguments and return values to alien functions
are now supported.
* fixed some bugs revealed by Paul Dietz' test suite:
+ the type-error signalled from WARN has a filled-in DATUM
slot.
+ the type-error required when a stream is not associated with
a file has the stream as its datum.
+ type-errors on single-floats on x86-64 no longer have
:INVALID-OBJECT as the datum
+ the type-errors signalled for invalid function names now have
a correct expected type
+ (SETF (DOCUMENTATION ... 'STRUCTURE)) no longer signals an
error for structures defined with a :TYPE. Documentation
strings for typed structures are no longer immediately
discarded
+ FILE-STRING-LENGTH and STREAM-EXTERNAL-FORMAT now work on
broadcast streams and synonym streams. FILE-LENGTH now also
works on broadcast streams.
New in version 0.9.0, 2005-04-24
Back to top
* incompatible change: the --noprogrammer option, deprecated since
version 0.7.5, has been removed. Please use the equivalent
--disable-debugger option instead.
* incompatible change: finalizers and *AFTER-GC-HOOKS* are now run
with interrupts enabled.
* incompatible change: support for *BEFORE-GC-HOOKS* (that have
been inoperational for a while now) has been completely removed.
* null lexical environments are now printed as #,
significantly reducing the amount of clutter in typical
backtraces.
* documentation on weak pointers, finalization, and after GC hooks
has been added to the manual.
* optimization: REPLACE on declared (UNSIGNED-BYTE 8) vectors, as
well as other specialized array types, is much faster. SUBSEQ and
COPY-SEQ on such arrays have also been sped up.
* optimization: EQL is now more efficient when at least other
argument is known to be of type (OR FIXNUM (NOT NUMBER)).
* fixed bug: the runtime is now less vulnerable to changes in the
size of the SBCL object on OS X, and virtual memory is reserved
for all spaces that need to be at a fixed address.
* fixed bug: finalizers are now thread-safe. (thanks to Gabor
Mellis)
* fixed bug: finalizers and after GC hooks that cause consing are
now safe.
* fixed bug: compiler error messages and summaries are now printed
to *ERROR-OUTPUT*, not *STANDARD-OUTPUT*.
* fixed inference of the upper bound of an iteration variable.
(reported by Rajat Datta).
* fixed bug 211e: calling local functions with duplicated constant
keyword argument no longer causes a bogus style warning about an
unused variable.
* fixed bug 305: INLINE/NOTINLINE declaration no longer causes
local ftype declaration to be disregarded. (reported by Dave
Roberts)
* fixed bug 373: caused by erronous compilation of references to
alien variables in the runtime on ppc/darwin.
* fixed bug 376: CONJUGATE type deriver.
* fixed infinite looping of ALIEN-FUNCALL, compiled with high
DEBUG. (reported by Baughn on #lisp)
* a cross-compiler bug on non-x86 platforms has been identified and
fixed. (thanks to Bruno Haible)
* improvements to the MIPS runtime code for increased stability.
(thanks to Thiemo Seufer)
* increased the maximimum compact environment size to allow purify
on images with large amounts of functions. (thanks to Cyrus
Harmon)
* partial workaround for bug 135: don't name the function we're
calling for hairy cases of EVAL, so as not to accumulate one
environment entry per call to EVAL. (reported by Kevin Reid)
* improvements to the x86-64 disassembler. (thanks to Lutz Euler)
* optimization: type testing for non-vector arrays should be
faster.
* fixed TRACE :ENCAPSULATE NIL, added support for :ENCAPSULATE NIL
on x86-64
* bug fix: setting 31st element of a bit vector to zero did not
work on Alpha-32.
* bug fix: redefining a class definition which failed due to a
previous accessor / function clash now works (but see BUGS entry
#380 for more problems in this area). (thanks to Zach Beane)
* the long form of DEFINE-METHOD-COMBINATION disables method group
checking when given a single method group with pattern *. (thanks
to Wendall Marvel)
* on x86 compiler supports stack allocation of results of simple
calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT.
* support for building and running on Mac OS X 10.4 "Tiger" has
been added
+ Binaries built on Tiger will not run on 10.2 "Jaguar"
currently
* fixed some bugs related to Unicode integration:
+ the restarts for recovering from input and output encoding
errors only appear when there is in fact such an error to
handle.
* fixed some bugs revealed by Paul Dietz' test suite:
+ MISC.549 and similar: late transformation of unsafe type
assertions into derived types caused unexpected code
transformations.
+ SCALE-FLOAT type deriver is less wrong.
+ type derivers for EXP, LOG and similar functions compute
result types for complex arguments better.
+ (MISC.563) CONJUGATE type deriver works for very restricted
complex types.
+ out-of-line type testers for character strings are available.
+ EQUAL compiler transform understands specialness of objects
of type BIT-VECTOR.
+ accessing double-floats stored on the stack now works on
x86-64.
+ debugger internals could sometimes create invalid lispobjs,
resulting in GC crashes.
+ MISC.548: type check weakening can convert required type into
optional.
+ initialization forms for bindings are not in scope of free
special declarations.
New in version 0.8.21, 2005-03-27
Back to top
* incompatible change: thread support for non-NPTL systems has been
removed - locking is buggy and unreliable. A threaded SBCL build
will now warn at startup and refuse to create new threads, unless
futex support is detected in the kernel
* incompatible change: the top level REPL now has only an ABORT
restart associated with it, not TOPLEVEL and ABORT as it used to.
TOP and TOPLEVEL are now available as debugger commands for
returning to the top level.
* incompatible change: forms evaluated in the REPL now use the
global optimization policy.
* incompatible change: user- and system-initialization files are no
longer processed with LOAD, but by READ and EVAL; hence the
global optimization policy, startup package, readtable, etc, can
be set by them.
* The .fasl file format number has been incremented because of
various incompatible changes.
* internal entry point details and argument counts no longer appear
in backtraces unless explicitly requested by setting
SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS*.
* built-in and standard functions no longer have names like "top
level local call to FOO".
* fixed bug 32: functions defined in non-null lexical environments
now have more legible printed representation
* fixed bug 33: functions defined in non-null lexical environemnts
are now more amenable to inspection by INSPECT.
* workaround for bug 354: XEPs no longer appear in backtraces
unless explicitly requested.
* fixed bug: receiving the signal which results from attempting to
write to mprotect()ed memory (SIGSEGV on Linux and some *BSDs,
SIGBUS on other *BSDs) on architectures where the C stack is also
the Lisp stack (x86 and x86-64) from foreign code no longer leads
to debugger confusion or wild instability. (reported by Cheuksan
Wang)
* fixed bug: COUNT and EQUAL no longer issue compiler efficiency
notes when operating on objects known to be SIMPLE-BIT-VECTORs.
(reported by Lutz Euler)
* fixed bug: (TYPEP X '(MEMBER ...)) no longer returns a list in
compiled code. (reported by Paul Dietz)
* fixed bug 276b: mutating with MULTIPLE-VALUE-SETQ a binding of a
specialized parameter to a method to something that is not TYPEP
the specializer is now possible.
* fixed bug: the MAKE-INSTANCE optimization is now correct in the
face of package deletion.
* fixed bug: LOAD should bind *LOAD-PATHNAME* to the merged
pathname. (reported by David Tolpin on c.l.l)
* contrib improvement: the SB-SIMPLE-STREAMS contrib now defines
STRING-SIMPLE-STREAM and FILE-SIMPLE-STREAM as subclasses of
STRING-STREAM and FILE-STREAM, respectively.
* contrib improvement: SB-INTROSPECT handles more of SLIME's needs
than previously; in addition, its test suite is now run on build.
(thanks to Luke Gorrie)
* a more robust x86-64 disassembler. (thanks to Lutz Euler)
* optimization: added a immediate representation for single-floats
on x86-64
* fixed some bugs revealed by Paul Dietz' test suite:
+ MISC.564: defined out-of-line version of %ATAN2 on x86.
+ attempting to create a package with a colliding nickname
causes correctable errors to be signalled.
+ MISC.572-574: :START1 and :START2 broken for
simple-base-strings.
+ several x86-64 backend bugs related to sign-extension of
immediate operands.
New in version 0.8.20, 2005-03-01
Back to top
* fixed inspection of specialized arrays. (thanks to Simon
Alexander)
* fixed disassembly of SHLD and SHRD on x86. (thanks to David
Lichteblau)
* fixed loading of multiply forward-referenced layouts. (thanks to
Cheuksan Wang)
* fixed bug 7: less verbose COMPILE-FILE output. Additionally, the
output is now directed to *STANDARD-OUTPUT* as specified by ANSI.
(see COMPILE-FILE documentation for details of :PRINT option)
* fixed bugs 19 and 317: fixed-format floating point printing is
more accurate. This also fixes a bug reported by Adam Warner
related to the ~@F format directive.
* fixed bug 371: bignum print/read inconsistency. (thanks to Harald
Hanche-Olsen)
* fixed bug: SET-SYNTAX-FROM-CHAR correctly shallow-copies a
dispatch table if the from-char is a dispatch macro character.
* fixed bug: COUNT and EQUAL on bit vectors with lengths divisible
by the wordsize no longer ignore the last word. (reported by Lutz
Euler)
* fixed bug in type checking of dynamic-extent variables. (reported
by Svein Ove Aas)
* optimization: sequence traversal functions use their freedom to
coerce function designators to functions.
* optimization: code with many calls to CLOS methods specialized on
CLOS classes has had redundant type checks removed.
* optimization: added declarations to speed up operations that
access the internal character database (for example
STRING-UPCASE)
* optimization: comparison operations between floats and
sufficiently small fixnums no longer create extra rationals
* fixed some bugs related to Unicode integration:
+ portions of multibyte characters at the end of buffers for
character-based file input are correctly transferred to the
start of the buffer at the next read.
+ COMPILE-FILE now respects any EXTERNAL-FORMAT argument given,
passing it through to OPEN.
+ LOAD on source files likewise passes any EXTERNAL-FORMAT
argument given to internal calls to OPEN.
+ the built-in comment readers (introduced by character
sequences ";" and "#|") are more forgiving to encoding
errors; they will STYLE-WARN and then attempt to resync the
stream at a character boundary. (thanks to Teemu Kalvas)
* fixed some bugs in the x86-64 port:
+ Negative short int return values from c-calls are
sign-extended correctly.
+ The stack is aligned to 16-bytes for c-calls, as required by
the ABI. (thanks to Cheuksan Wang)
+ The disassembler understands more x86-64. (thanks to Cheuksan
Wang)
+ The regression tests use SB-ALIEN:INT instead of
SB-ALIEN:INTEGER for enums. (thanks to Vincent Arkesteijn)
+ Multiple small optimizations and bugfixes for floating point
operations.
* fixed some bugs revealed by Paul Dietz' test suite:
+ Space, Tab, Linefeed, Return and Page have the invalid
secondary constituent character trait.
+ SET-SYNTAX-FROM-CHAR correctly copies multiple-escape
character syntax.
+ WITH-INPUT-FROM-STRING should only update the index place on
normal termination.
+ Pretty-printing backquoted forms when *PRINT-CIRCLE* is true
works more reliably.
+ Bit-array operations (BIT-AND and similar) worked incorrectly
with one-dimensional arrays with fill pointers.
+ TYPE-OF failed on a complex with an integer realpart and a
RATIO imagpart.
+ compiler failure during type inference for the code of form
(IF (EQL X (THE ...)) ...) (MISC.535).
New in version 0.8.19, 2005-01-23
Back to top
* new port: SBCL now works in native 64-bit mode on x86-64/Linux
platform. The port supports 61-bit fixnums, large memory spaces
and reloading shared object files.
* enhancement: saving cores with foreign code loaded is now
supported on ppc/Darwin in addition to the previously supported
platforms.
* enhancement: the statistical profiler now walks deeper into the
call stack for more meaningful call-graphs and accrued time
reports (x86/x86-64 only). It also now reports time spent in
foreign functions.
* enhancement: it is now possible to trace most individual methods
of a generic function in addition to tracing the generic function
itself.
* bug fix: invalid :DEFAULT-INITARGS are detected in compiled calls
to MAKE-INSTANCE.
* bug fix: defaulted initargs are passed to INITIALIZE-INSTANCE and
SHARED-INITIALIZE methods from compiled calls to MAKE-INSTANCE.
* bug fix: COERCE to (COMPLEX FLOAT) of a complex number no longer
produces an error. (thanks to Vincent Arkesteijn)
* bug fix: NAMESTRING on pathnames with :WILD components in their
directories works correctly. (thanks to Artem V. Andreev)
* fixed bug 125: compiler preserves identity of closures. (reported
by Gabe Garza)
* bug fixed: functions with &REST arguments sometimes failed with
"Undefined function" when compiled with (DEBUG 3). (reported by
Robert J. Macomber)
* bug fix: overflow during compiling of setting element of a bit
vector with constant index and value. (reported by Timmy Douglas)
* build fix: fixed the dependence on *LOAD-PATHNAME* and
*COMPILE-FILE-PATHNAME* being absolute pathnames.
* on x86 compiler partially supports stack allocation of
dynamic-extent closures.
* GO and RETURN-FROM do not check the extent of their exit points
when compiled with SAFETY 0.
* fixed some bugs related to Unicode integration:
+ encoding and decoding errors are now much more robustly
handled; it should now be possible to recover even from
invalid input or output to the terminal. (thanks to Teemu
Kalvas)
+ provided a first cut at implementing STRING-TO-OCTETS and
OCTETS-TO-STRING. (thanks to Robert J. Macomber)
+ altered the SB-MD5 contributed module slightly, changing the
interface just enough for it to be supportable for builds
where lisp characters are not eight bits.
* fixed some bugs revealed by Paul Dietz' test suite:
+ the FORMATTER-generated functions for ~V[ conditionals
require the correct number of arguments.
+ READ-FROM-STRING returns the mandated second value when
applied to displaced strings.
+ the #\Rubout and #\Backspace characters are treated as
invalid constituent characters by the tokenizer.
New in version 0.8.18, 2004-12-28
Back to top
* new feature: reloading changed shared object files with
LOAD-SHARED-OBJECT now causes the new definitions to take effect.
* new feature: references to foreign variables and functions can
now be compiled and loaded before the corresponding shared object
file is loaded, as long as the foreign definitions are available
at runtime.
* Solaris 10 (aka SunOS 5.10) on the SPARC platform is now
supported. (thanks to Dan Debertin)
* SB-ALIEN enums can now be represented in Lisp by any symbols, not
just keywords. (thanks to Vincent Arkesteijn)
* fixed bug #331: structure-class instances corresponding to
DEFSTRUCT forms are now created eagerly.
* fixed bug #345: backtraces from calls to undefined functions work
on x86 as well. Related bug #61 is now also partially fixed on
x86 (backtraces from throws to unknown catch tags.)
* bug fix: lambda-list parsing is now stricter vrt. order and
number of lambda-list keywords.
* bug fix: as specified by AMOP, an error is signalled if a
class-option appears multiple times in a DEFCLASS form. (reported
by Bruno Haible)
* bug fix: RANDOM can be compiled when the compiler derives the
type of its numeric argument as a disjoint set of small integers.
(reported by Paul Dietz)
* bug fix: starting a core saved with shared objects loaded when
those objects are not available no longer causes threaded SBCL to
hang. (reported by Sean Ross)
* bug fix: evaluated FUNCTION no longer bypasses encapsulation (eg.
TRACE).
* bug fix: (SETF MACRO-FUNCTION) now accepts an optional
environment argument, which must always be NIL. (reported by
Kalle Niemitalo)
* bug fix: printing 1.0d+23 no longer results in an error.
(reported by Rolf Wester for CMUCL; bug fix from Raymond Toy)
* bug fix: structure slot setters preserve evaluation order.
(thanks to Gabor Melis)
* fixed some bugs related to Unicode integration:
+ RUN-PROGRAM can allow its child to take input from a Lisp
stream. (reported by Stefan Scholl)
+ ASDF-INSTALL successfully downloads .tar.gz files in all
locales. (reported by Ken Causey)
* fixed some bugs revealed by Paul Dietz' test suite:
+ INCF, DECF and REMF evaluate their place form as specified in
CLtS 5.1.3.
+ FORMATTER expands ~{ ~} iteration directives with V or #
parameters correctly.
+ FORMATTER deals with the ~@[ ~] conditional directive where
the consequent uses no arguments correctly.
+ the system has a partial understanding of the (COMPLEX RATIO)
type specifier.
+ UPGRADED-COMPLEX-PART-TYPE obeys the lattice upgrading rules
required.
New in version 0.8.17, 2004-11-28
Back to top
* new feature: a build-time option (controlled by the :SB-UNICODE
keyword feature, enabled by default) for building the system with
support for the entire 21-bit character space defined by the
Unicode consortium.
* new feature: the system now has rudimentary external-format
support; the primary user-visible change at this time is that
characters with the high bit set (such as lower-case-e-acute)
will print correctly to a terminal in a UTF-8 environment.
* minor incompatible change: BASE-CHAR no longer names a class;
however, CHARACTER continues to do so, as required by ANSI.
* minor incompatible change: SB-DEBUG:*DEBUG-PRINT-FOO* variables
are no longer supported, and
SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* has been moved to the
SB-EXT package (temporarily re-exported from SB-DEBUG).
* minor incompatible change: SB-C::*COMPILER-ERROR-PRINT-FOO*
variables are no longer supported: use
SB-EXT:*COMPILER-PRINT-VARIABLE-ALIST* instead.
* fixed bug #351: better error-handlind and reporting for malformed
LET and LET* forms.
* fixed bug #350: bignum-printing is now more memory-efficient,
allowing printing of very large bignums, eg. (expt 2 10000000).
(reported by Bruno Haible)
* fixed bug #302: better primitive-type selection for intersection
types.
* fixed bug #308: non-graphic characters now all have names, as
required. (reported by Bruno Haible)
* bug fix: redefining a class with different superclasses now
correctly removes it from the direct-subclasses of its previous
superclasses. (reported by David Morse)
* bug fix: (SETF FIND-CLASS) using a FORWARD-REFERENCED-CLASS as
the new value now works. (reported by Bruno Haible)
* bug fix: correct canonicalization of multiple non-standard slot
options in DEFCLASS as per AMOP 5.4.2. (reported by Bruno Haible)
* bug fix: SB-MOP:CLASS-PROTOTYPE now signals an error if the class
is not yet finalized, as required by AMOP. (reported by Bruno
Haible)
* bug fix: SB-MOP:ALLOCATE-INSTANCE method for instances of
BUILT-IN-CLASS now exists, an signals an error.
* bug fix: duplicate LOOP variable bindings now signal
PROGRAM-ERROR during macroexpansion for non-iteration variables
as well. (reported by Bruno Haible for CMUCL)
* bug fix: Cyclic structures and unprintable objects in compiler
messages no longer cause errors. (reported by Bruno Haible)
* bug fix: READ, READ-PRESERVING-WHITESPACE, READ-DELIMITED-LIST,
and READ-FROM-STRING all now return a primary value of NIL if
*READ-SUPPRESS* is true. (reported by Bruno Haible for CMUCL)
* bug fix: Default value of EOF-ERROR-P in READ-FROM-STRING is
true. (reported by Bruno Haible for CMUCL)
* bug fix: ERROR now signals a TYPE-ERROR if the arguments to ERROR
do not designate a condition. (reported by Bruno Haible for
CMUCL)
* bug fix: UNINTERN, USE-PACKAGE, IMPORT and EXPORT all signal an
SB-EXT:NAME-CONFLICT condition (subtype of PACKAGE-ERROR) in the
name conflict situations in CLHS 11.1.1.2.5, and provide a
restart permitting resolution in favour of any of the conflicting
symbols. (reported by Bruno Haible for CMUCL)
* bug fix: EQUAL compiler optimizations is less aggressive on
strings which can potentially compare true despite having
distinct specialized array element types.
* bug fix: unit enumerations can be defined without dividing by
zero. (thanks to Vincent Arkesteijn)
* FORMAT compile-time argument count checking has been enhanced.
(report from Bruno Haible for CMUCL)
* a partial workaround for the bug 262: the compiler does not try
to inline-expand a local function doing RETURN-FROM from a
deleted BLOCK. (thanks to Peter Denno for the bug report and to
David Wragg for the simple test case)
* fixed some bugs revealed by Paul Dietz' test suite:
+ RENAME-PACKAGE allows all package designators as new package
names.
+ constraint propagation and lambda variable substitution are
more cautious in dealing with partially deleted code.
+ compiler sometimes lost reoptimization passes.
+ CERROR, given a condition as condition designator, passes its
remaining arguments to the continue format control without
complaint.
+ Case-altering FORMAT directives work correctly on non-ASCII
characters.
+ The REAL type specifier handles bounds outside the floating
point ranges without signalling FLOATING-POINT-OVERFLOW.
+ Functions with IR1-transformations can create intercomponent
references to global functions.
+ NIL parameter to the FORMAT directive ~^ means `unsupplied
parameter'.
+ FORMAT ~R treats a nil value for its first parameter
correctly.
New in version 0.8.16, 2004-10-25
Back to top
* enhancement: saving cores with foreign code loaded is now
supported on x86/NetBSD and sparc/Linux in addition to the
previously supported platforms.
* bug fix: on some platforms repeated installations caused multiple
copies of HTML documentation to be installed -- should not happen
any more. (reported by Stefan Scholl)
* bug fix: parsing self-recursive alien record types multiple times
no longer causes infinite recursion. (reported by Thomas F.
Burdick, original patch by Helmut Eller for CMUCL)
* bug fix: stack-exhaustion detection works now on NetBSD as well.
(thanks to Richard Kreuter)
* bug fix: defining classes whose accessors are methods on existing
generic functions in other (locked) packages no longer signals
bogus package lock violations. (reported by Francois-Rene Rideau)
* bug fix: special variables as DEFMETHOD parameters no longer have
associated bogus type declarations. (reported by David Wragg and
Bruno Haible)
* bug fix: read-write consistency on streams of element-type
(SIGNED-BYTE N) for N > 32. (reported by Bruno Haible for CMUCL)
* bug fix: redefiniton of the only method of a generic function
with no DEFGENERIC no longer emits a full WARNING. In addition,
redefinition of generic functions with no DEFGENERIC to an
incompatible lambda list now signals an error. (thanks to Zach
Beane)
* bug fix: DEFGENERIC now works even when there's a function of the
same name in an enclosing lexical environment. (thanks to Zach
Beane)
* fixed compiler failure, caused by instrumenting code during
IR1-optimization. (Debian bug report #273606 by Gabor Melis)
* optimization: added loop analysis and improved register
allocation
* fixed some bugs revealed by Paul Dietz' test suite:
+ POSITION on displaced vectors with non-zero displacement
returns the right answer.
+ (SIMPLE-STRING) is a valid type specifier for sequence
creators.
+ *PRINT-LEVEL* handling for slotless structures is
pedantically correct.
+ PPRINT-INDENT accepts a request for an indentation of any
REAL.
+ PPRINT-TAB (and the FORMAT ~T directive) now indent by the
correct amounts.
+ The justification version of the FORMAT ~< directive treats
non-zero minpad parameter correctly.
New in version 0.8.15, 2004-09-29
Back to top
* incompatible change: SB-INT:*BEFORE-SAVE-INITIALIZATIONS* and
SB-INT:*AFTER-SAVE-INITIALIZATIONS* have been renamed
SB-EXT:*SAVE-HOOKS* and SB-EXT:*INIT-HOOKS*, and are now part of
the supported interface.
* new feature: Single-stepping of code compiled with DEBUG 2 or
higher and (> DEBUG (MAX SPACE SPEED)) is now possible.
* new feature: saving cores with foreign code loaded is now
supported on x86/FreeBSD, x86/Linux, and sparc/SunOS. (based on
Timothy Moore's work for CMUCL)
* bug fix: DEFTYPE lambda-list parsing now binds unsupplied keyword
parameters to * instead of NIL if no initform is supplied.
(reported by Johan Bockgaard)
* bug fix: DEFINE-COMPILER-MACRO lambda-list parsing now binds
correctly when FUNCALL appears as the car of the form. Note:
despite this FUNCALL forms are not currently subject to
compiler-macro expansion. (port of Raymond Toy's fix for the same
from CMUCL, reported by Johan Bockgaard)
* bug fix: FOR ... ON ... -clauses in LOOP now work on dotted lists
(thanks for Teemu Kalvas)
* bug fix: in FORMAT ~^ inside ~:{ now correctly steps to the next
case instead of terminating the iteration (thanks for Julian
Squires, Sean Champ and Raymond Toy)
* bug fix: incorrect expansion of defgeneric that caused a style
warning. (thanks for Zach Beane)
* bug fix: slot accessor effective method computation works
properly for classes with multiple non-standard applicable
methods on SB-MOP:SLOT-VALUE-USING-CLASS. (reported by Ralf
Mattes)
* on x86 compiler supports stack allocation of results of LIST and
LIST*, bound to variables, declared DYNAMIC-EXTENT. (based on
CMUCL implementation by Gerd Moellmann)
* fixed some bugs revealed by Paul Dietz' test suite:
+ FORMAT strings with both the ~<~:;~> form of the
justification directive and pretty-printing directives cause
an error.
New in version 0.8.14, 2004-08-30
Back to top
* incompatible change: the internal functions
SB-KERNEL:32BIT-LOGICAL-FOO, intended for providing efficient
logical operations on (UNSIGNED-BYTE 32) values, have been
renamed to SB-KERNEL:WORD-LOGICAL-FOO. Modular arithmetic should
be used instead of the old functions.
* new feature: on platforms where "dladdr" is available foreign
function names now appear in backtraces. (based on Helmut Eller's
work for CMUCL)
* documentation: documentation for SB-BSD-SOCKETS, SB-GRAY,
SB-SIMPLE-STREAMS, and SB-PROFILE have been integrated into the
user manual.
* documentation: ASDF manual is now distributed with SBCL.
* bug fix: SBCL can now load its contributed modules with REQUIRE
even if the system-provided entries have been removed from
ASDF:*CENTRAL-REGISTRY*. Infinite recursion in REQUIRE is also
detected.
* bug fix: backtraces involving undefined functions or assembly
routines are more informative. (thanks to Brian Downing)
* bug fix: mutually referent alien structures now work correctly.
(reported by Rick Taube)
* bug fix: structures defined by WITH-ALIEN can be referred to
within other definitions in the same WITH-ALIEN.
* bug fix: division operators (MOD, TRUNCATE and the like) with
constant zero divisors and integer dividends no longer generate
left shifts.
* bug fix: provide default methods for INPUT-STREAM-P and
OUTPUT-STREAM-P specialized on SB-GRAY:FUNDAMENTAL-STREAM.
* bug fix: improve the detection and resolution of MOP metacycles
(where effective method computation depends on the generic
function having its effective method computed). (reported by
Bruno Haible)
* bug fix: pass the right initargs to :BEFORE or :AFTER methods on
SHARED-INITIALIZE or INITIALIZE-INSTANCE in optimized
MAKE-INSTANCE constructors. (reported by Axel Schairer for cmucl)
* bug fix: pathnames with relative directory components can be
represented relative to default pathnames.
* optimization: in taking the GCD of bignums, reduce the two
bignums to approximately the same size (using Euclid's algorithm)
before applying the more sophisticated binary GCD. (thanks to
Juho Snellman)
* optimization: COUNT on bitvectors now operates word-at-a-time.
* optimization: ASH with a positive, but not necessarily constant,
(leftwards) shift, when in a modular context, is compiled to a
hardware shift.
* fixed some bugs revealed by Paul Dietz' test suite:
+ FORMAT variable parameters ("~V") are defaulted
properly if the corresponding argument is NIL.
+ FORMAT directives accepting a minpad parameter treat negative
values as 0.
+ literal commas as character parameters to FORMAT directives
are parsed correctly.
+ literal spaces directly after ~ directives within a
format-logical-block (~:< ~@:>) do not induce :FILL-style
conditional newlines.
+ PRINT-UNREADABLE-OBJECT inserts spaces as specified (and only
as specified: it no longer includes conditional newlines).
+ PRINC-TO-STRING binds *PRINT-READABLY* to NIL (as well as
*PRINT-ESCAPE*).
+ PPRINT-LOGICAL-BLOCK signals a TYPE-ERROR if its :PREFIX or
:PER-LINE-PREFIX argument does not evaluate to a string.
New in version 0.8.13, 2004-07-25
Back to top
* new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
the manual for details; for now, package locks can be disabled by
removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
if no major problems are found then it is likely that they will
be compiled in unconditionally.
* major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are
now unsupported operators on all platforms. To load a shared
library into SBCL, use SB-ALIEN:LOAD-SHARED-OBJECT. To load a
non-shared object file, link it into a shared library outside of
SBCL and load it using SB-ALIEN:LOAD-SHARED-OBJECT. (incidentally
fixes bug #79)
* bug workaround: ROOM T and the GC were not working together
reliably, because invariants expected by the SB!VM:INSTANCE-USAGE
reporting facility aren't preserved. That reporting has been
disabled, so now until and unless someone figures out how to make
it work reliably with the current GC, (ROOM T) is equivalent to
(ROOM).
* minor incompatible change: as threatened around sbcl-0.8.0, the
home package of MOP-related symbols is now SB-MOP, not SB-PCL.
The symbols are also exported from SB-PCL for backwards
compatibility, but more so than before SB-PCL should be treated
as an implementation-internal package.
* fasl format changed: SBCL 0.8.13 fasls are incompatible with
those of earlier versions
* the SB-SPROF contrib now works on (most) non-x86 architectures.
It is known as of this release not to work on the Alpha, however.
* fixed bug #167: errors signalled due to illegal syntax in method
bodies are now more legible.
* fixed bug #338: instances of EQL-SPECIFIER are now valid type
designators and can hence be used with TYPEP.
* fixed bug #333: CHECK-TYPE now ensures that the type error
signalled, if any, has the right object to be accessed by
TYPE-ERROR-DATUM. (reported by Tony Martinez)
* fixed bug #340: SETF of VALUES obeys the specification in ANSI
5.1.2.3 for multiple-value place subforms. (reported by Kalle
Olavi Niemetalo)
* fixed bug #334: programmatic addition of slots using specialized
methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
and :ALLOCATION :CLASS slots.
* fixed bug #269: SCALE-FLOAT scales floats by any integer, not
just float exponents. (rereported by Peter Seibel)
* fixed a bug: #\Space (and other whitespace characters) are no
longer considered to be macro characters in standard syntax by
GET-MACRO-CHARACTER.
* fixed bug: initialization of condition class metaobjects no
longer causes an instance of the condition to be created.
(reported by Marco Baringer)
* fixed bug: it is now possible to have slots such that
SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
description is neither :INSTANCE nor :CLASS.
* fixed bug: the ctor optimization of MAKE-INSTANCE now respects
user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
SLOT-VALUE-USING-CLASS), and no longer causes errors with
non-standard SLOT-DEFINITION-ALLOCATION values.
* fixed bugs: various race conditions handling exiting threads.
CL-PPCRE's thread torture test now passes.
* fixed arguably-a-bug: GC time proportional to number of threads
in system even when most of them are idle
* optimization: improved performance of BIT and SBIT on
bit-vectors.
* .fasl file incompatibility: The fasl file version number has been
incremented because of changes associated with package locks.
New in version 0.8.12, 2004-06-25
Back to top
* minor incompatible change: the system no longer provides
optimization hints (conditions which are TYPEP
SB-EXT:COMPILER-NOTE) for conforming code in default compilation
mode; these hints are still emitted when higher SPEED
optimization is requested.
* new contrib module: a sampling profiler (profiling by statistical
sampling, rather than by instrumenting functions) is available as
the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho
Snellman)
* the behaviour of the standard function ED is now customizeable by
third parties through a hook variable: see ED's documentation
string for information on the protocol.
* the compiler no longer emits efficiency notes for (FUNCALL X)
when the type of X is uncertain under default optimization
settings.
* fixed bug 276: mutating a binding of a specialized parameter to a
method to something that is not TYPEP the specializer is now
possible.
* fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
exhibit the required behaviour on the x86 platform. (thanks to
Peter van Eynde, Eric Marsden and Bruno Haible)
* fixed bug 335: ATANH now computes the inverse hyperbolic tangent
even for difficult arguments. (reported by Peter Graves)
* fixed bug 141a: the backquote printer now descends quoted
structure.
* fixed another bug in backquote printing: no more destructive
modification of the form's list structure. (reported by Brian
Downing)
* fixed bug in INTERRUPT-THREAD: pin the function, so that it
cannot move between its address being taken and the call to
interrupt_thread, fixing a crashing race condition.
* the SB-POSIX contrib implementation has been adjusted so that it
no longer exhibits ridiculously poor performance when
constructing instances corresponding to C structs.
New in version 0.8.11, 2004-06-07
Back to top
* minor incompatible change: the sb-grovel contrib now treats C
structures as alien (in the sense of SB-ALIEN) objects rather
than as undistinguished (simple-array (unsigned-byte 8) (*))s.
This has implications for memory management of client code
(sb-grovel-returned objects must now be manually managed) and for
type safety (alien objects now have full types).
* new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
used to control emission of compiler diagnostics, rather than the
SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
quality should be considered deprecated.
* install.sh now installs the user manual as well
* (not quite a new documentable feature, but worth considering in
the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
beginnings of a semantically meaningful condition hierarchy is
under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
IDEs.
* fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
designator as the defaults argument.
* fixed bug: Displaced arrays whose displaced-to array has become
too small now cause ARRAY-DIMENSION to signal an error, providing
for safer bounds-checking. (reported by Bruno Haible)
* fixed bug: DEFCLASS slot definitions with identical :READER and
:WRITER names now signal a reasonable error. (reported by Thomas
Burdick)
* fixed bug: CLOSE :ABORT T on appending stream no longer causes
file deletion.
* fixed bug: Invalid slot specification errors now print correctly.
(thanks to Zach Beane)
* fixed bug 320: Shared to local slot value transfers in class
redefinitions now happen corrently from superclasses as well.
(reported by Bruno Haible)
* fixed bug 316: SHIFTF now accepts VALUES forms. (reported by
Bruno Haible)
* fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
improper lists correctly. (reported by Bruno Haible)
* fixed bug 313: source-transform for was erroneously
applied to a call of a value of a variable with name .
(reported by Antonio Menezes Leitao)
* fixed bug 307: The obsolete instance protocol ensures that
subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
* fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
remove dead unknown-values globs from the middle of the stack.
* added a new restart to *BREAK-ON-SIGNALS* handling to make it
easier to resume long computations after using *BREAK-ON-SIGNALS*
to diagnose and fix failures. (thanks to Nikodemus Siivola)
* fixed bug reported by PFD in lisppaste #747 (and Bruno Haible
from CLISP test suite): WRITE-TO-STRING is not constant-foldable.
* fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
is now consistent with (COMPLEX ); bugs in treatment of
COMPLEX MEMBER and UNION types have likewise been fixed. (thanks
to Bruno Haible)
* fixed a (fairly theoretical) bug in string printing: if
*PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
does not have array-element-type equal to the most general string
type.
* fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
function name. (thanks to Nikodemus Siivola)
* fixed bug: compile-time format string checker failed on
non-closed ~{. (reported by Thomas F Burdick)
* fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
don't warn on legal loop code involving more than one aggregate
boolean. (thanks to Nikodemus Siivola)
* fixed bug: as reported by Peter Graves on #lisp IRC, passing a
NIL in keyword position to MAKE-PACKAGE was not being reported as
invalid.
* fixed bug: as reported by Juan Ripoll on cmucl-imp,
MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
keywords.
* fixed bugs 280 and 312: the checking for multiple definitions in
a file is less likely to become confused by uses of inline
functions.
* fixed bug: the #S reader macro performs the keyword coercion
specified for slot names. (reported by Kalle Niemitalo)
* fixed bug: lambda lists may contain symbols whose names start
with & but are not lambda-list-keywords; their occurrence
triggers a STYLE-WARNING.
* fixed bug 321: define-method-combination argument lambda lists do
not cause invalid code to be generated when &optional or &aux
variables have default values. (reported by Bruno Haible)
* fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
have CLOS classes; this appears also to have fixed reported
instability in stack exhaustion detection.
* fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
MUFFLE-WARNING when no associated restart is present is now
printable.
* optimization: rearranged the expansion of various defining macros
so that each expands into only one top-level form in a
:LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
approximately 10%.
* optimization: used a previously little-used slot in symbols to
cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
to Juho Snellman)
* fixed some bugs revealed by Paul Dietz' test suite:
+ MAKE-INSTANCES-OBSOLETE returns the class name when called
with a symbol.
+ Fixed an optimization bug related to inheritance of initforms
from local to shared slots.
+ FILE-POSITION works as specified on BROADCAST-STREAMs.
+ CAST optimizer forgot to flush argument derived type.
+ print/read consistency on floats is now orders of magnitude
more likely. (thanks also to Bruno Haible for a similar
report and discussions)
+ removed stack cleaning in the cleanup part of UNWIND-PROTECT.
+ IMAGPART is specified (infelicitously) to return (* 0
) for objects of type REAL. Make it so.
+ SXHASH is specified (infelicitously) to respect similarity,
which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
it so. (thanks to Markus Ziegler)
+ on the Alpha, the compiler succeeds in compiling functions
returning a known number of arguments greater than 63.
+ fixed handling of invalid NIL arguments in keyword position
in local calls.
+ fixed non-pretty printing of arrays with *PRINT-RADIX* being
true.
+ provided a readably-printable representation for RANDOM-STATE
objects.
+ ensured that pathnames, where they have a namestring, always
print using #P"..." syntax.
New in version 0.8.10, 2004-04-25
Back to top
* Support for the forthcoming 2.0 version of the NetBSD kernel
running on x86 hardware has been added. (thanks to Perry E.
Metzger most immediately, and others for their past work)
* SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
current release version; SBCL's OpenBSD support had been broken
since about the time of OpenBSD's switch to ELF binary format.)
* [placeholder for DX summary]
+ user code with &REST lists declared dynamic-extent, under
high speed or space and low safety and debug optimization
policy.
* The manual has been converted to Texinfo format and the debugger
chapter from the cmucl manual has been added.
* A facility has been added to extract documentation strings from
sbcl and store them as Texinfo-formatted snippets for inclusion
in the manual (via Texinfo's @include directive)
* bug fix: compiler emitted division in optimized DEREF. (thanks
for the test case to Dave Roberts)
* bug fix: multidimensional simple arrays loaded from FASLs had
fill pointers. (reported by Sean Ross)
* bug fix: PROFILE output is printed nicely even for large
numerical values. (thanks to Zach Beane)
* bug fix: streams with element-type (SIGNED-BYTE ) for
greater than 32 handle EOF correctly.
* bug fix: on X86 an immediate argument of the IMUL instruction is
correctly printed in disassembly. (thanks to Lutz Euler)
* bug fix: class slots in redefined classes preserve their old
values. (thanks to Bruno Haible and Nikodemus Siivola)
* bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
succeeds. (reported by Marco Baringer)
* fixed some bugs revealed by Paul Dietz' test suite:
+ READ-SEQUENCE now works on ECHO-STREAMs.
+ RATIONALIZE works more according to its specification.
(thanks to Bruno Haible)
New in version 0.8.9, 2004-03-24
Back to top
* deprecation of old extension: *DEBUG-PRINT-LEVEL* and
*DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
should matter to you only if you rebind the printer control
variables and then find you want different bindings in the
debugger than in the ordinary execution of your program.)
* The runtime build system has been tweaked to support building (on
SPARC/SunOS) using a C compiler which invokes Sun's own assembler
and linker. (thanks to Nikodemus Siivola)
* Unbound, undefined, undeclared variables now trigger full
WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
more often programmer error than deliberate exploitation of
undefined behaviour.
* optimization: the hash algorithm for strings has changed to one
that is less vulnerable to spurious collisions. (thanks to Juho
Snellman)
* optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
needless bounds checking. (thanks to Juho Snellman)
* optimization: implemented multiplication as a modular
(UNSIGNED-BYTE 32) operation on the PPC backend.
* fixed some bugs revealed by Paul Dietz' test suite:
+ ADJUST-ARRAY now copies the datum in a zero rank array if
required.
+ ADJUST-ARRAY no longer adjusts non-adjustable arrays.
+ MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
+ MAKE-STRING-INPUT-STREAM functions correctly for strings with
element-type NIL.
+ CLEAR-INPUT accepts NIL and T for its (optional) stream
argument.
+ Ratios can now be printed correctly with *PRINT-BASE* bound
to 2, 8 or 16.
+ ECHO-STREAMs no longer attempt to echo the end of file value
to their output stream on EOF from read.
+ CONCATENATED-STREAM-STREAMS discards constituent streams
which have been read to end-of-file.
+ CLOSE works as expected on the null CONCATENATED-STREAM, and
on STRING-STREAMS.
+ Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
description of determination of which consecutive characters
constitute a word.
+ Printing the "Space" character with escaping on now yields "#
\\ ", rather than "#\\Space", as mandated by ANSI 22.1.3.2.
+ Reading floating-point numbers with *READ-BASE* set to a
number less than 10 works correctly.
+ Reading floating-point numbers with *READ-BASE* set to a
number more than 10 works correctly.
+ Printing with *PRINT-READABLY* targets the standard
readtable, not the readtable currently in effect.
New in version 0.8.8, 2004-02-24
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* minor incompatible change: parsing of namestrings on a physical
(Unix) host has changed; numbers after the final #\. in a
namestring are no longer interpreted as a version field. This is
intented to be largely invisible to the user, except that the
meaning of the namestring "*.*.*" has changed: it now refers to a
pathname with :TYPE :WILD :NAME #. This namestring
should usually be replaced by (make-pathname :name :wild :type
:wild :version :wild) with the added benefit that this is more
likely to be portable. As a consequence of this change, the
:IF-EXISTS :NEW-VERSION option to OPEN now signals an error if
the file being opened exists; this may have an impact on existing
code.
* fixed bug 190: RUN-PROGRAM should now work properly, respecting
signals received, on the PowerPC platforms (both Linux and
Darwin). (thanks to Pierre Mai for pointing out the location of
the error)
* several fixes on OS X: The system now builds and runs cleanly on
Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
(thanks to Brian Mastenbrook)
* bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments
with second-resolution: integer multiples of 1/3600 between -24
and 24. (thanks to Vincent Arkesteijn)
* bug fix: functions =, /=, <, <=, >, >= did not check the argument
type when called with 1 argument; PEEK-CHAR checked type of
PEEK-TYPE only after having read first character from a stream.
(reported by Peter Graves)
* bug fix: the garbage collector now has much better locality
behaviour, and in particular no longer treats all memory as being
exhausted when many small objects point to each other in a deeply
recursive manner.
* bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
recognized as being TYPEP their class.
* bug fix: the PUSHNEW documentation string has been corrected.
(thanks to Vincent Arkesteijn)
* bug fix: defaulting of the value for the last of an atypically
large number of multiple values being bound was not being
performed correctly on the Alpha or PPC platforms
* optimization: implemented multiplication as a modular
(UNSIGNED-BYTE 32) operation on the x86 backend.
* optimization: SEARCH on simple-base-strings can now be
open-coded. (see also contrib/compiler-extras.lisp for
inspiration for teaching the compiler about the Boyer-Moore
algorithm).
* value, returned by MAX (and MIN) called with several EQUALP, but
not EQL, arguments now does not depend on compiler settings.
* fixed some bugs revealed by Paul Dietz' test suite:
+ in stack analysis liveness information is propagated from
non-local entry points.
+ pathwise CAST removing failed when the CAST node did not
start a block.
+ INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
stream.
+ LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
host is already defined.
+ RENAME-FILE works on streams instead of signalling an
internal type error.
+ PEEK-CHAR uses the current readtable when determining whether
or not a character is whitespace.
+ MERGE-PATHNAMES handles the case when the pathname does not
specify a name while the default-pathname specifies a
version.
+ Pathnames now stand a better chance of respecting print/read
consistency.
+ Attempting to use standardized file system operators with a
pathname with invalid :DIRECTORY components signals a
FILE-ERROR.
+ OPEN :DIRECTION :IO no longer fails to work on non-existent
files.
+ DIRECTORY on logical pathnames is more correct.
+ CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
signal a TYPE-ERROR if their argument is not a stream.
+ READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
designator argument does not designate a stream.
+ OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
examining the synonym.
+ STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
work as specified.
+ OPEN and WITH-OPEN-STREAM allow opening streams with
element-type larger than ([UN]SIGNED-BYTE 32).
New in version 0.8.7, 2003-12-28
Back to top
* When built with the :SB-FUTEX feature, threaded builds now take
advantage of the "fast userspace mutex" facility in Linux kernel
2.6 for faster/more reliable mutex and condition variable
support.
* Incompatible change (but one you probably shouldn't have been
using anyway): the interface and code for arbitrating between
multiple threads in the same user session has been redesigned.
* bug fix: GET-SETF-EXPANSION no longer throws an internal type
error when called without an explicit environment argument.
(thanks to Nikodemus Siivola)
* bug fix: buffered :DIRECTION :IO streams are less likely to
become confused about their position. (thanks to Adam Warner and
Gerd Moellmann)
* bug fix: Pretty printing backquoted forms with unquotations in
the argument list position of various code constructs such as
LAMBDA now works correctly. (reported by Paul Dietz)
* bug fix: Pretty printing unquotations no longer loses all stream
position information.
* optimization: performance of string output streams is now less
poor for multiple small sequence writes.
* optimization: performance of CSUBTYPEP in the presence of complex
expressions involving CONS and NOT many times has been improved.
(reported by Paul Dietz)
* ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
Sean Ross)
* SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
streams for the REPL, for the debugger, and so on. (thanks to
David Licteblau)
* DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
* fixed some bugs revealed by Paul Dietz' test suite:
+ the value of the :REHASH-THRESHOLD argument to
MAKE-HASH-TABLE is ignored if it is too small, rather than
propagating through to cause DIVIDE-BY-ZERO or
FLOATING-POINT-OVERFLOW errors.
+ extremely complex negations of CONS types were not being
sufficiently canonicalized, leading to inconsistencies in
SUBTYPEP.
+ VALUES tranformer lost derived type.
New in version 0.8.6, 2003-11-25
Back to top
* fixed a bootstrapping bug: the build process no longer assumes
that the various BOOLE-related constants have the same value in
host and target lisps. (noted by Paul Dietz' test suite on an
SBCL binary built from CLISP)
* The system can now be dynamically linked on the MIPS platform,
which enables dynamic loading of foreign code from Lisp. (thanks
to Ralf Baechle for discussions on the MIPS ABI)
* The system now records debugging information for its own source
files in a filesystem-position-independent manner, relative to
the "SYS" logical host.
* fixed a compiler bug: MV-LET convertion did not check references
to the "max args" entry point. (reported by Brian Downing)
* tweaked disassembly notes to be less confident about proclaiming
some instruction as an LRA. (thanks to Brian Downing)
* contrib update: SB-ACLREPL is now threadsafe; multiple listeners
now each have their own history, command character, and other
characteristics. (thanks to David Lichteblau)
* fixed some bugs revealed by Paul Dietz' test suite:
+ compiler failure in compiling LOGAND expressions including a
constant 0
+ Implementation of ASH-MOD32 on X86 and PPC did not work for
the shift greater than 32.
+ FLUSH-DEST did not mark blocks for type check regeneration.
+ HANDLER-CASE failed to accept declarations in handler clauses
in some circumstances.
New in version 0.8.5
Back to top
* New code in contrib/sb-introspect (still probably not entirely
stable yet) provides some support for smart Lisp development
environments like SLIME.
* The conditions signalled for errors occurring when loading .fasl
files have been systematized (inheriting from
SB-EXT:INVALID-FASL) in a way which should help ASDF recover
gracefully.
* The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS* stuff
has been cleaned up. If you code contrib/ stuff, this might
affect you, and you can look at contrib/README, contrib/
STANDARDS, and/or the 0.8.4.27 diff to check.
* In full calls the compiler now does not generate checks for
declared argument types for all arguments.
* various threading fixes
+ and some experimental patches which didn't make it into the
main tree for this release, but which are shipped in contrib/
experimental-thread.patch as a possible fix for some failures
(deadlock, spinning...) in GC-intensive multithreaded
applications.
* fixed PPC build problem (source code incompatibility of different
library versions): added offsetof() hackery which attempts to
divine where glibc maintainers put uc_mcontext today
* fixed bug 282: compiler does not trust type assertions while
passing arguments to a full call.
* fixed bug 261: compiler allows NIL or "no value" to be accepted
for &OPTIONAL VALUES type parameter.
* fix bug 214: algorithm for noting rejected templates is now more
similar to that of template seletion. (also reported by rydis on
#lisp)
* fixed bug 141b: printing backquoted information readably and
prettily inserts a space where necessary.
* bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
(CHARACTER 10) are now reported as errors, rather than propagated
as unknown types. (reported by piso on #lisp)
* bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
with values NIL and :ERROR. (thanks to Milan Zamazal)
* fixed bug 191c: CLOS now does proper keyword argument checking as
described in CLHS 7.6.5 and 7.6.5.1.
* bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
longer raise an error; further, using a list as a
for-as-arithmetic counter now raises a meaningful error.
* fixed bug 213a: even fairly unreasonable CONS type specifiers are
now understood by sequence creation functions such as
MAKE-SEQUENCE and COERCE.
* fixed bug 46k: READ-BYTE now signals an error when asked to read
from a STRING-INPUT-STREAM.
* compiler enhancement: SIGNUM is now better able to derive the
type of its result.
* type declarations inside WITH-SLOTS are checked. (reported by
salex on #lisp)
* fixed some bugs revealed by Paul Dietz' test suite:
+ incorrect optimization of TRUNCATE for a positive first
argument and negative second.
+ compiler failure in let-convertion during flushing dead code.
+ compiler failure while deriving type of TRUNCATE on an
interval, containing 0.
+ ASH of a negative bignum by a negative bignum count now
returns -1, not 0.
+ intersection of CONS types now canonicalizes properly, fixing
inconsistencies in SUBTYPEP.
New in version 0.8.4, 2003-10-02
Back to top
* incompatible change: The --disable-debugger command line option
now clobbers the debugger at a more fundamental level, by
redefining #'INVOKE-DEBUGGER instead of by rebinding
*DEBUGGER-HOOK*. The main difference is that BREAK is specified
by ANSI to ignore *DEBUGGER-HOOK* and INVOKE-DEBUGGER regardless.
Under the old system, BREAK would enter the debugger REPL and
then suffer recursive errors because *DEBUG-IO* is also messed up
in --disable-debugger mode; while under the new system, BREAK in
--disable-debugger mode terminates the system just as an
unhandled error would.
* fixed compiler performance when processing loops with a step >1;
* bug fix: DOCUMENTATION now retrieves generic function
documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
support has been systematized, and now supports the methods
specified by ANSI, along with a default method and a method for
slot documentation. (reported by Nathan Froyd)
* bug fix: effective methods associated with a generic function are
no longer cached over a change of that generic function's method
combination. (reported by Andreas Fuchs)
* bug fix: RUN-PROGRAM now does not fail if some element in $PATH
names a non-existent directory. (thanks to Andreas Fuchs)
* bug fix: ROUND and TRUNCATE could, under certain circumstances on
the PPC platform, lead to stack corruption; this has been fixed.
(reported by Rainer Joswig)
* bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or
lower no longer ever returns 1 instead of 0. (thanks to Lars
Brinkhoff)
* fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
arithmetic in general, is now much more reliable on the PPC
platform.
* bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
platform now returns the right answer.
* optimization: restored some effective method precomputation in
CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
precomputation is now tunable.
* optimization: compiler-internal data structure use has been
reviewed, and changes have been made that should improve the
performance of the compiler by about 20%.
* optimization: performance of FILL (and :INITIAL-ELEMENT) on
simple-base-strings and simple-bit-vectors is improved.
* optimization: the optimization of 32-bit logical and arithmetic
functions introduced in version 0.8.3 on the x86 has been
implemented on the mips, ppc and sparc platforms; an
implementation of the same facility, but for 64-bit arithmetic,
has been added for the alpha.
* microoptimization: the compiler is better able to make use of the
x86 LEA instruction for multiplication by constants.
* bug fix: in some situations compiler did not report usage of
generic arithmetic in (SPEED 3) policy.
* bug 145b fix: compiler used wrong type specifier while converting
MEMBER-types to numeric.
* bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
McNaught)
* bug fix: (SETF AREF) on byte-sized-element arrays with constant
index argument now works properly on the Alpha platform.
* bug fix: floating point exception treatment on the Alpha platform
is improved.
* bug fix: FILE-POSITION works much better on string input and
output streams. (thanks to Nikodemus Siivola)
* bug fix: many threading/garbage collection symptoms sorted.
SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
might be pseudo-atomic.
* internal change: Stopping for GC is now done with signals not
ptrace. GC is now done in whichever thread wanted it, instead of
in the parent.
* bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
work again.
* bug fix: result form in DO is not contained in the implicit
TAGBODY.
* incompatible change: ICR structure is changed; the value part of
CONTINUATION is now called LVAR; corresponding functions are
renamed (e.g. SB-C::CONTINUATION-TYPE has become
SB-C::LVAR-TYPE).
* added type deriver for ISQRT (thanks to Robert E. Brown).
* bug fix: better support for loading from the command line when an
initialization file sets (READTABLE-CASE *READTABLE*). (thanks to
Adam Warner)
* fixed some bugs revealed by Paul Dietz' test suite:
+ the RETURN clause in LOOP is now equivalent to DO (RETURN
...).
+ ROUND and FROUND now give the right answer when given very
small float arguments.
+ (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
circumstances.
+ optimizer for (EXPT X 0) did not work for X not of type
FLOAT.
+ (GCD 0 ) returned .
+ LCM should return a non-negative integer.
+ PARSE-INTEGER returned the index of a terminator instead of
the upper bounding index of a substring in case :JUNK-ALLOWED
NIL.
+ PARSE-INTEGER returned an incorrect index being applied to a
displaced string.
+ LCM with two arguments of 0 returns 0 rather than signalling
DIVISION-BY-ZERO.
+ unsigned addition of a 32-bit constant with the high bit set
no longer causes an internal compiler error on the x86.
+ LOGBITP accepts a non-negative bignum as its INDEX argument.
+ compiler incorrectly derived types of DPB and DEPOSIT-FIELD
with negative last argument.
+ byte specifiers with zero size and position no longer cause
an error during type derivation.
+ bignum multiplication on the Alpha platform now returns the
right answer.
* porting: The system now builds on SuSE AMD64, although it still
generates a 32-bit binary.
* .fasl file incompatibility: The fasl file version number has been
incremented (because of the changes to internal compiler data
structures referred to above).
New in version 0.8.3, 2003-08-25
Back to top
* SBCL now builds and runs on MacOS X (version 10.2), or perhaps
more accurately, on the Darwin kernel running on PowerPC
hardware. (thanks to Brian Mastenbrook, Pierre Mai and Patrik
Nordebo)
* Compiler code deletion notes now signal a condition of type
SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE)
with an associated MUFFLE-WARNING restart.
* The compiler now performs limited argument count validation of
constant format strings in FORMAT, and where appropriate in
ERROR, CERROR and WARN. (thanks to Gerd Moellmann)
* New ASDF-INSTALL contrib can be used for automatic download and
installation of third-party Lisp code from CCLAN or other sites
via CLiki.
* Threaded builds (:SB-THREAD) now support
SB-THREAD:INTERRUPT-THREAD, which forces another thread to
execute a function supplied by the caller.
* bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
now accept and act upon their :ELEMENT-TYPE keyword argument.
(reported by Martin Atzmueller, Edi Weitz)
* bug fix: FILE-POSITION now accepts position designators up to
ARRAY-DIMENSION-LIMIT or the extreme of the off_t range,
whichever is the greater. (thanks to Patrik Nordebo)
* bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
Kalle Olavi Niemitalo)
* bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
printable. (reported by Eric Marsden)
* bug fix in sb-posix: mmap() now works on systems with a 64-bit
off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
* x86 bug fix in control stack exhaustion checking: now shows
backtrace
* bug fix in WITH-TIMEOUT: now the body can have more than one
form. (thanks to Stig Sandoe)
* bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
UNREAD-CHAR now correctly includes the unread character in the
target sequence. (thanks to Gerd Moellmann)
* bug fix in threaded builds: the system can now be suspended and
resumed by shell job control with minimal disruption.
* bug fixes in times and timezones >2038AD
* better handling of "where is GNU make?" problem in build scripts
(thanks to Nikodemus Siivola)
* new optimization: inside a named function any reference to a
function with the same name is considered to be a self-reference;
this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
optimization quality.
* new optimization on x86: logical functions and + now have
optimized (UNSIGNED-BYTE 32) versions, which are automatically
used when the result is truncated to 32 bits.
* VALUES declaration is partially enabled.
* fixes in SB-GROVEL (thanks to Andreas Fuchs)
* fixed some bugs revealed by Paul Dietz' test suite:
+ The system now obeys the constraint imposed by
UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
types form a lattice under type intersection.
+ FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
+ ASSOC now ignores NIL elements in an alist.
+ CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
and (1+ MOST-POSITIVE-FIXNUM) answers.
+ The addition of a method with invalid qualifiers to a generic
function does not cause an error to be signalled immediately;
a warning is signalled, and the error is generated only on
calling the generic function.
* changed .fasl file version number, in part to add type codes for
new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
obscure ANSI requirements
New in version 0.8.2, 2003-07-25
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* fixed bug 148: failure to inline-expand a local function left
garbage, confusing the compiler.
* fixed bugs 3cd: structure slot readers perform type check if the
slot can have an invalid value (i.e. it is either not initialized
or can be written with a less specific slot writer).
* bug fix: the compiler now traps array references to elements off
the end of an array; previously, the bounds checking in some
circumstances could go off-by-one.
* improved MACHINE-VERSION, especially on Linux (thanks to Lars
Brinkhoff)
* type declarations for array element types now obey the
description on the CLHS page "Declaration TYPE", as per
discussions on sbcl-help around 2003-05-08. This means that a
declaration (TYPE (ARRAY FOO) BAR) means that, within the scope
of the declaration, all references to BAR will be asserted or
assumed (with THE, so dependent on compiler policy) to involve
objects of type FOO. Note that no such declaration is implied in
(MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
* declared types of functions from the "Conditions" chapter.
(reported by Paul Dietz)
* bug fix: CERROR accepts a function as its first argument.
* bug fix: NTH an NTHCDR accept a bignum as index arguments.
(reported by Adam Warner)
* optimization: character compare routines now optimize comparing
against a constant character. (reported by Gilbert Baumann)
* bug fix: (SETF AREF) on byte-sized-element arrays with constant
index argument now works properly on the MIPS platform.
* fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
* repeated evaluation of the same DEFSTRUCT, a slot of which is
declared to have a functional type, does not cause an error
anymore.
* fixed bug: sometimes MAKE-INSTANCE did not work with classes with
many :DEFAULT-INITARGS. (reported by Istvan Marko)
* fixed bug: if last continuation of a deleted block has a
destination, this destination should be deleted too. (reported by
ohler on #lisp)
* fixed a bug in the bootstrap process: the host compiler's values
of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer
leak into the newly-built SBCL. (reported by Eric Marsden on #
lisp, test case from Patrik Nordebo)
* improved the ability of the disassembler on the PPC platform to
provide helpful disassembly notes.
* SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
the class in more cases than previously.
* bug fix: FILE-POSITION now understands :START and :END for
STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
* bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
8) data. (thanks to David Lichteblau)
* bug fix: it is possible to add a method to a generic function
without lambda list.
* bug fix: reader failed to signal END-OF-FILE inside an object
representation. (reported by Nikodemus Siivola)
* fixed some bugs revealed by Paul Dietz' test suite:
+ LAST and [N]BUTLAST should accept a bignum.
+ condition slot accessors are methods.
+ (VECTOR NIL) is a subtype of STRING.
New in version 0.8.1, 2003-06-22
Back to top
* minor incompatible change: some nonsensical specialized lambda
lists (used in DEFMETHOD) which were previously ignored now
signal errors.
* minor incompatible change: the system is now aware of the types
of variables in the COMMON-LISP package, and will signal errors
for most violations of these type constraints (where previously
they were silently accepted).
* minor incompatible change: COMPILE-FILE now uses the freedom
afforded (ANSI 3.2.2.3) to use derived function types for
functions defined in the same file. This also permits the system
to warn on static type mismatches and function redefinition.
(Currently it does not work with high DEBUG level.)
* minor incompatible change: VALUES declaration is disabled.
* When issuing notes, the compiler now signals a condition of type
SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
restart for use in user handlers. It is expected that the
COMPILER-NOTE condition will eventually become a condition
supertype to a hierarchy of note types, which will then be
handleable in a similar fashion. However, at the moment, no such
note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists, but
it's an implementation detail, not a classification for the
purpose above.)
* Changes in type checking closed the following bugs:
+ type checking of unused values (192b, 194d, 203);
+ template selection based on unsafe type assertions (192c,
236);
+ type checking in branches (194bc).
* A short form of VALUES type specifier has ANSI meaning (it has
increased the number of situations when SBCL cannot perform type
checking).
* fixed bug in DEFSTRUCT: once again, naming structure slots with
keywords or constants is permissible.
* STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
classes. (thanks to Antonio Martinez)
* improved ANSIness in DESCRIBE: The DESCRIBE function no longer
outputs FRESH-LINE or TERPRI, and no longer converts its stream
argument to a pretty-print stream. Instead, it leaves any such
operations to DESCRIBE-OBJECT methods.
* bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
by Teemu Kalvas)
* bug fix: NIL is now a valid destructuring argument in DEFMACRO
lambda lists. (thanks to David Lichteblau)
* bug fix: Defining a generic function with a :METHOD-CLASS being a
subclass of STANDARD-METHOD no longer causes stack exhaustion.
(thanks to Gerd Moellmann)
* fixed bug 246: increased compilation speed of long
MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
integer argument)
* a contributed module implementing COMPILER-LET and
MACROEXPAND-ALL has been included.
* DEFCONSTANT now throws a condition of type
SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
constant to a non-EQL value; CONTINUE and ABORT restarts
respectively change and preserve the value.
* fixed bug 63: The code walker, part of the implementation of
CLOS, is now better at handling symbol macros.
* bug fix: There is no longer an internal implementation type named
CL:LENGTH. (reported by Raymond Toy)
* bug fix: In macro-like defining macros/special operators the
implicit block does not enclose the lambda list.
* fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols
(not enclosed in parentheses) are not suitable as type
specifiers, and their use properly signals an error now.
* bug fix: An argument count mismatch for a type specifier in code
being compiled no longer causes an unhandled error at compile
time, but signals a compile-time warning.
* fixed simple vector readable printing
* bug fix: DESCRIBE takes more care over whether the class
precedence list slot of a class is bound before accessing it.
(reported by Markus Krummenacker)
* bug fix: FORMATTER can successfully compile pretty-printer format
strings which use variants of the ~* directive inside.
* bug fix: SEARCH now applies its TEST predicate to the elements of
the arguments in the correct order. (thanks to Wolfhard Buss)
* fixed bug 235b: The compiler uses return types of MAPCAR and
friends in type inference. (thanks to Robert E. Brown)
* bug fix: Reading in symbols with an explicit package name of ""
(e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
* fixed some bugs revealed by Paul Dietz' test suite:
+ NIL is now allowed as a structure slot name.
+ Arbitrary numbers, not just REALs, are allowed in certain
circumstances in LOOP for-as-arithmetic clauses.
+ Multiple class redefinitions before slot access no longer
causes a type error.
+ (SETF FIND-CLASS) now accepts NIL as an argument to remove
the association between the name and a class.
+ Generic functions with non-standard method-combination and
over five methods all of which return constants no longer
return NIL after the first few invocations. (thanks to Gerd
Moellmann)
+ CALL-NEXT-METHOD with no arguments now passes the original
values of the arguments, even in the presence of assignment.
+ Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
object.
+ DISASSEMBLE works with closures and funcallable instances.
+ ADD-METHOD now returns the generic function, not the new
method.
+ FIND-METHOD signals an error if the lengths of the
specializers is incompatible with the generic function, even
if the ERRORP argument is true.
+ TYPE-OF returns recognizeable subtypes of all built-in-types
of which its argument is a member.
+ DEFCLASS only redefines the class named by its class-name
argument if that name is the proper name of the class;
otherwise, it creates a new class.
+ SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME
slot of the UNBOUND-SLOT condition to the name of the slot.
+ (SETF (AREF bv 0) ...) did not work for bit vectors.
+ SLOT-UNBOUND and SLOT-MISSING now have their return values
treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
SLOT-MAKUNBOUND in the specified fashion.
New in version 0.8.0, 2003-05-25
Back to top
* SBCL now builds using CLISP (version of late April 2003 from CVS)
as cross-compilation host. As a consequence, we can now bootstrap
our way up to SBCL starting with a bare gcc toolchain and
human-readable source code (first the source to CLISP, then the
source to SBCL).
* A contributed module containing a partial implementation of the
simple-streams interface has been included. (thanks to Rudi
Schlatte)
* A contributed module implementing the RFC1321 Message Digest
Algorithm, known as MD5, has been included.
* minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
no longer has any effect, as the code controlled by this feature
has been deleted. (As far as we know, no-one has ever built using
this feature, and its semantics were confused in any case).
* minor incompatible change: As a consequence of making
SLOT-EXISTS-P work on conditions (as required by the ANSI
specification), SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP
likewise have the expected behaviour on conditions. Users should
note, however, that such behaviour is not required by the ANSI
specification, and so use of this behaviour may render their code
unportable.
* fixed some bugs revealed by Paul Dietz' test suite:
+ the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
types.
+ &ENVIRONMENT parameter in macro lambda list is bound first.
+ SXHASH on condition objects no longer returns NIL.
+ :ALLOCATION :CLASS slots are better treated; their values are
updated on class redefinition, and initforms inherited from
superclasses are applied.
+ REMOVE-METHOD returns its generic function argument even when
no method was removed.
+ SHARED-INITIALIZE now initializes the values of the requested
slots, including those with :ALLOCATION :CLASS.
+ ALLOCATE-INSTANCE now works on structure classes defined via
DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
STRUCTURE-CLASS).
+ SLOT-EXISTS-P now works on conditions, as well as structures
and CLOS instances.
+ MAKE-LOAD-FORM now has the required methods on
STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
+ MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
keyword, and now implements the SLOT-NAMES argument.
+ methods with &OPTIONAL arguments no longer allow too many
arguments to be passed in the call without error.
+ DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
option is consistent with the required arguments of the
generic function lambda list.
* bug fix: REQUIRE accepts a string designator. (Thanks to Antonio
Martinez.)
* bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
specified-by-AMOP lambda list of (CLASS &REST INITARGS).
* bug fix: The compiler now checks for duplicated variables in
macro lambda lists.
* bug fix: SETQ on globals returns the correct value.
* fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
not a COMPILER-ERROR (followed by some other strange error on
choosing the CONTINUE restart).
* bug fix: make.sh and friends are now more consistent in the way
that they look for GNU "make".
New in version 0.8alpha.0, 2003-04-30
Back to top
* experimental native threads support (on x86 Linux >=2.4 only).
This is not compiled in by default: you need to add :SB-THREAD to
the target features. See the "Beyond ANSI" chapter of the manual
for details.
* fix for longstanding nonANSIism: The old distinction between
CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
The return value from CL:FIND-CLASS is now a CLOS class, and
likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
* An interface to the MetaObject Protocol, as described in
Kiczales, des Rivieres and Bobrow's "The Art of the Metaobject
Protocol", MIT Press, 1991, is available from the SB-MOP package.
* incompatible change: the SB-PCL package should now be considered
a private implementation detail, and no longer a semi-private MOP
interface.
* minor incompatible change: due to rearrangement for threads, the
control stack and binding stack are now allocated at arbitrary
addresses instead of being hardcoded per-port. Users affected by
this probably have to be doing advanced things with shared
libraries, and will know who they are.
* minor incompatible change: Previously, all --eval forms used were
processed with READ before any of them were processed with EVAL.
Now each --eval form is processed with both READ and EVAL before
the next --eval form is processed. (Thus package operations like
sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
work as the user might reasonably expect.)
* minor incompatible change: *STANDARD-INPUT* is now only an
INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
Martinez)
* minor incompatible change: Y-OR-N-P is now character-oriented,
not line oriented. Also, YES-OR-NO-P now works without errors.
(thanks to Antonio Martinez)
* sb-aclrepl module improvements: an integrated inspector, added
repl features, and a bug fix to :trace command.
* Known functions, which cannot be open coded by the backend, are
considered to be able to check types of their arguments. (fixing
a bug report by Nathan J. Froyd)
* fixed a bug in computing method discriminating functions: It is
now possible to define methods specialized on classes which have
forward-referenced superclasses. (thanks to Gerd Moellmann)
* fixed evaluation order in optional entries (reported by Gilbert
Baumann)
* SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
* SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
required-by-AMOP NAME argument, as well as CLASS and
DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
* fixed bug 20: DEFMETHOD can define methods using names that are
not the proper names of classes to designate class specializers.
* bug fix: INTERACTIVE-STREAM-P now works on streams associated
with Unix file descriptors, instead of blowing up. (thanks to
Antonio Martinez)
* Garbage collection refactoring: user-visible change is that a
call to the GC function during WITHOUT-GCING will not do garbage
collection until the end of the WITHOUT-GCING. If you were doing
this you were probably losing anyway.
* fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
(SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
TYPEP the latter but not the former.
* The compiler issues a full WARNING for calls to undefined
functions with names from the CL package.
* MAP-INTO for a vector destination is open coded. (reported by
Brian Downing on c.l.l)
* bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
documentation string.
* fixed some bugs revealed by Paul Dietz' test suite:
+ COPY-ALIST now signals an error if its argument is a dotted
list.
+ Condition slots are now accessed more correctly in the
presence of multiple initargs for a given slot.
+ The USE-VALUE, CONTINUE and STORE-VALUE functions now
correctly exclude restarts of the same name associated with a
different condition.
+ DEFCLASS of forward-referenced classes with another
forward-referenced class in the superclasses list no longer
causes an error.
+ Condition slots are now initialized once each, not multiple
times. (thanks to Gerd Moellmann)
+ CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
Gerd Moellmann)
+ &WHOLE and &REST arguments in macro lambda lists are
patterns.
+ NSET-EXCLUSIVE-OR does not return extra elements when its
arguments contain duplicated elements.
+ RESTART-CASE understands local macros.
+ RESTART-CASE associates exactly its own restarts with a
condition.
+ ENDP in safe mode checks its argument to be of type LIST.
+ COPY-SYMBOL in a threaded build no longer fails when the
symbol in question is unbound.
+ Optimized MAKE-INSTANCE functions no longer cause internal
assertion failures in the presence of duplicate initargs.
+ SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
+ Side-effectful :DEFAULT-INITARGS have their side-effects
propagated even in the ctor optimized implementation of
MAKE-INSTANCE.
+ :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
New in version 0.7.14, 2003-03-24
Back to top
* a better implementation of SXHASH on (simple) bit vectors,
measured both in execution speed and in distribution of results
over the positive fixnums, has been installed. Likewise, a better
implementation of EQUAL for simple bit vectors is now available.
* fixed CEILING optimization for a divisor of form 2^k.
* fixed bug 240 (emitting extra style warnings "using the lexical
binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
by Antonio Martinez)
* fixed SXHASH, giving different results for NIL depending on type
declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
* fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
variable. (found by Rolf Wester)
* SBCL does not ignore type declarations for special variables.
(reported by rif on c.l.l 2003-03-05)
* some bug fixes in contrib/sb-aclrepl/
* fixed some bugs revealed by Paul Dietz' test suite:
+ a bug in the CONS type specifier, whereby the CAR and CDR
types got intertwined, has been fixed;
+ the type system is now able to reason about the interaction
between INTEGER and RATIO types more completely;
+ APPEND, [N]REVERSE and NRECONC check that those their
arguments, which must be proper lists, are really so;
+ An array specialized to be unable to hold elements has been
implemented, as required -- yes, really -- by ANSI;
+ GETF and GET-PROPERTIES throw a TYPE-ERROR, not a
SIMPLE-ERROR, on malformed property lists;
New in version 0.7.13, 2003-02-26
Back to top
* incompatible packaging change: in line with Unix convention, SBCL
now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
* REQUIRE and PROVIDE are now optionally capable of doing something
useful. See the documentation string for REQUIRE.
* infrastructure for a managed SBCL contrib system: contributed
modules in this release include:
+ the ASDF system definition facility;
+ an interface to the BSD Sockets API;
+ an ACL-like convenience interface to the repl; (thanks to
Kevin Rosenberg)
+ an implementation of ROTATE-BYTE, with efficient
implementation on x86 hardware;
* fixed a bug in LOG, so that LOG of a rational argument near 1 now
gives a closer approximation to the right answer than previously.
(thanks to Raymond Toy)
* fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
optional environment arguments, as required by ANSI.
* fixed bugs in other functions taking environment objects,
allowing calls with an explicit NIL environment argument to be
compiled without error.
* fixed bug 228: primary return values from
FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input
to COMPILE or FUNCTION.
* fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
:TYPE will no longer signal errors on innocuous objects.
* fixed bug 231b: SETQ is better at respecting type declarations in
the lexical environment.
* fixed a bug in DEFCLASS: classes named by symbols with no or
unprintable packages can now be defined.
* fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
* fixed compiler failure related to checking types of functions.
(reported by Robert E. Brown)
* the compiler is now much more consistent in its error-checking
treatment of bounding index arguments to sequence functions: in
(SAFETY 3) code, errors will be signalled in almost all cases if
invalid sequence bounding indices are passed to functions defined
by ANSI to operate on sequences.
* fixed a bug in the build procedure: documentation of
SBCL-specific packages is now preserved and available in the
final Lisp image.
* lifted FDEFINITION lookup out of loops in the implementation of
many list operations. (thanks to Robert E. Brown)
* fixed a bug in the reader: the #n# reader macro now works for
objects of type STANDARD-OBJECT. (reported by Tony Martinez)
* the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert E.
Brown and Tony Martinez respectively)
* PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
SLOT-BOUNDP: in particular, it is now able to optimize them much
better, and is now not vulnerable to having packages renamed.
Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
always called when a slot is not present in an instance. (thanks
to Gerd Moellmann)
* fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
longer signal an error on unreading a character following EOF on
the previous constituent stream. (thanks to Tony Martinez)
* fixed some bugs revealed by Paul Dietz' test suite:
+ ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
not just nonnegative fixnums;
+ the logical bit-array operators such as BIT-AND now accept an
explicit NIL for their "opt-arg" argument (to indicate a
freshly-consed result bit-array);
+ ELT now signals an error on an invalid sequence index in safe
code;
+ the type system is now cleverer about negations of numeric
types, and consequently understands the BIGNUM and RATIO
types better;
+ the type system is now cleverer about the interaction between
INTEGER and RATIO types: while bugs still remain, many more
cases are accurately computed;
+ in TYPECASE, OTHERWISE now only introduces an
otherwise-clause if it is in the last clause;
+ CONSTANTLY now correctly returns a side-effect-free function
in all cases;
+ DECLARE is no longer treated as a special-operator; in
particular, SPECIAL-OPERATOR-P no longer returns T for
DECLARE;
* incremented fasl file version number due to the change in the
DEFSTRUCT-SLOT-DESCRIPTION structure.
New in version 0.7.12, 2003-01-25
Back to top
* minor incompatible change: code processed by the "interpreter" or
EVAL now has a compilation optimization policy of (DEBUG 2)
(changed from (DEBUG 1)) to improve debuggability of interactive
development, and to allow the use of the debug RETURN command in
such code.
* an experimental implementation of the RETURN command for the
debugger has been included. (thanks to Frederik Kuivinen)
* fixed bug 62: constraints were not propagated into a loop.
* fixed bug in embedded calls of SORT (reported and investigated by
Wolfgang Jenkner).
* fixed some bugs revealed by Paul Dietz' test suite:
+ printing and reading of arrays with some dimensions having
length 0 (thanks to Gerd Moellmann);
+ BOA constructor with &AUX argument without a default value
does not cause a type error;
+ CONSTANTP now returns true for all self-evaluating objects.
New in version 0.7.11, 2002-12-31
Back to top
* fixed bug 127: DEFSTRUCT now does not clobber old structure
accessors that are related by inheritance, as specified in the
:CONC-NAME section of the specification of DEFSTRUCT. (thanks to
Valtteri Vuorikoski)
* The compiler is now able to inline functions that were defined in
a complex lexical environment (e.g. inside a MACROLET).
* fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
to Lutz Euler)
* Support for the upcoming FreeBSD-5.0 release has been included.
(thanks to Dag-Erling Smorgrav)
* fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
effect when it is not in a toplevel context.
* fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
stand a better chance of being correct. (thanks to Gerd
Moellmann)
* fixed bug in COERCE, which now signals an error on coercing a
rational to a bounded real type which excludes the expected
answer.
* The compiler is now able to derive types more accurately from the
COERCE and COMPILE functions.
* fixed bug 223: functional binding is considered to be constant
only for symbols in the CL package.
* fixed bug 231: SETQ did not check the type of a variable being
set (reported by Robert E. Brown)
* A new optimization for MAKE-INSTANCE has been included, fixing
various bugs (including relating to :ALLOCATION :CLASS slots and
:DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
Moellmann)
* fixed some LOOP bugs revealed by Paul Dietz' test suite:
+ As required by ANSI, LOOP now disallows anonymous collection
clauses such as COLLECT I in conjunction with aggregate
boolean clauses such as THEREIS (= I 1);
+ LOOP now signals an error when any variable is reused in the
same loop (including the potentially useful construct
analogous to WITH A = 1 WITH A = (1+ A);
+ IT is only a special loop symbol within the first clause of a
conditional loop clause;
+ LOOP with a typed iteration variable over a hashtable now
signals a type error iff it should.
* fixed some other bugs revealed by Paul Dietz' test suite:
+ FILE-STREAM now names the class previously known as
FD-STREAM;
+ in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
argument) no longer signals an error;
+ likewise in DEFSTRUCT, :CONC-NAME NIL now respects the
package of the slot symbol, rather than using the current
package ((:CONC-NAME "") continues to intern the slot's name
in the current package);
* incremented fasl file version number, because of the incompatible
change to the DEFSTRUCT-DESCRIPTION structure, and again because
of the new implementation of DEFINE-COMPILER-MACRO.
New in version 0.7.10, 2002-11-27
Back to top
* Support for building SBCL for MIPS platforms running in
little-endian mode has now been checked in, and basic
functionality on said platforms verified.
* minor incompatible change: PCL now records the pathname of a file
in which methods and the like are defined, rather than its
truename.
* minor incompatible change: TRUENAME now considers the truename of
a file naming a directory to be the pathname with :DIRECTORY
component indicating that directory.
* minor incompatible change: a NAMED clause in the extended form of
LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
reason for the previous behaviour is unclear.
* more systematization and improvement of CLOS and MOP conformance
in PCL (thanks to Gerd Moellman and Pierre Mai):
+ the standard ANSI CL generic function NO-NEXT-METHOD is now
implemented;
+ DEFINE-METHOD-COMBINATION no longer signals an error for
primary methods with no specializers;
+ the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
implemented;
+ the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
FORWARD-REFERENCED-CLASSes; error reporting on
CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
has been improved;
+ SXHASH on CLOS instances now uses a slot internal to the
instance to return different numbers on distinct instances,
while preserving the same return value through invocations of
CHANGE-CLASS;
+ DEFMETHOD signals errors when methods with longer incongruent
lambda lists are added to generic functions;
+ COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
CLASS, as specified in AMOP;
+ COMPUTE-SLOTS :AROUND now assigns locations sequentially
based on the order returned by the primary method for classes
of class STANDARD-CLASS;
+ DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS
option.
* fixed some bugs shown by Paul Dietz' test suite:
+ DOLIST puts its body in TAGBODY;
+ SET-EXCLUSIVE-OR sends arguments to :TEST function in the
correct order;
+ MULTIPLE-VALUE-SETQ evaluates side-effectful places before
value producing form;
+ if more variables are given to PROGV than values, extra
variables are bound and made to have no value;
+ NSUBSTITUTE on list arguments gets the right answer with
:FROM-END;
+ ELT signals an error of type TYPE-ERROR when the index
argument is not a valid sequence index;
+ LOOP signals (at macroexpansion time) an error of type
PROGRAM-ERROR when duplicate variable names are found;
+ LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew
Danish)
+ FUNCALL of special-operators now cause an error of type
UNDEFINED-FUNCTION;
+ PSETQ now works as required in the presence of side-effecting
symbol-macro places;
+ NCONC accepts any object as its last argument;
+ :COUNT argument to sequence functions may be BIGNUM; (thanks
to Gerd Moellman)
+ loop-for-as-package does not require a package to be
explicitely specified;
+ LOOP WITH now treats NIL in the d-var-spec correctly as an
ignored binding.
* fixed bug 166: compiler preserves "there is a way to go"
invariant when deleting code.
* fixed bug 172: macro lambda lists with required arguments after &
REST arguments now cause an error to be signalled. (thanks to
Matthew Danish)
* fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM bug.
(thanks to Matthew Danish)
* fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
Baumann)
* fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
arguments are lexically rebound. (thanks to Gerd Moellmann and
Pierre Mai)
* fixed bug 194: error messages are now more informative when there
is no primary method applicable in a call to a generic function.
(thanks to Gerd Moellmann)
* fixed bug in command line argument checking (thanks to Julian
Fondren)
* fixed bug in COUNT-IF, making it handle :FROM-END correctly
(thanks to Matthew Danish)
* incremented fasl file version number, because of the
SXHASH-related changes in the layout of CLOS data structures
New in version 0.7.9, 2002-10-25
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* minor incompatible change: The runtime (the Unix executable named
"sbcl") is now much pickier about the .core files it will load.
Essentially it now requires .core files to descend from the same
build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
as the runtime does. (The intent is to prevent the crashes which
can occur, and which can even be reported as mysterious failures,
when people patch the sources or change the build parameters
without changing LISP-IMPLEMENTATION-VERSION, then mix and match
sbcl and .core files.)
* fixed bug: VALUES-LIST is no longer optimized away.
* fixed bug 142: The FFI conversion of C string values to Lisp
string values no longer conses excessively. (thanks to Nathan
Froyd porting Raymond Toy's fix to CMU CL)
* began to systematize and improve MOP conformance in PCL (thanks
to Nathan Froyd, Gerd Moellman and Pierre Mai):
+ SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
itself;
+ GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now
implemented;
+ FINALIZE-INHERITANCE is now called on class finalization;
+ DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
argument precedence order.
* fixed bug 202: The compiler no longer fails on functions whose
derived types contradict their declared type.
* DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
so it can be non-toplevel.
* The fasl file version number has changed (because of the new
implementation of DEFMACRO).
* (mostly) fixed bugs 46b and 46c: sequence functions now check, in
safe code, that any length requirement by their type-specifier
argument is valid. The exceptions to this are described in bug
213.
* fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
functions now check the types of their inputs as required by
ANSI.
* fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
introduced symbol is DECLAREd to be SPECIAL.
* fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
* fixed bug: :COUNT argument to sequence functions may be negative
* fixed bug: body of DO-SYMBOLS may contain declarations
* fixed bug: PUSHNEW now evaluates its arguments from left to right
(reported by Paul F. Dietz, fixed by Gerd Moellman)
* fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
symbol macro only once
* fixed printing of call frame when argument list is unavailable
* fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
* compiler no longer signals WARNING on unknown keyword
:ALLOW-OTHER-KEYS
New in version 0.7.8, 2002-09-26
Back to top
* A beta-quality port to the mips architecture running Linux, based
on the old CMUCL backend, has been made. It has been tested on a
big-endian kernel, and works sufficiently well to be able to
rebuild itself; it has not been tested in little-endian mode.
* fixed an inconsistency between gencgc.c and purify.c which made
dumping/loading .core files unreliable
* fixed bug 120a: The compiler now deals correctly with IFs where
the consequent is the same as the alternative, instead of
misderiving the return type. (thanks to Alexey Dejneka)
* fixed bug 113: Logical pathnames are now dumpable (the logical
host is resolved at load-time, throwing an error if it is not
found).
* fixed bug 174: FORMAT's error message is slightly clearer when a
non-printing character is used in a format directive.
* fixed several bugs in compiler checking of type declarations,
i.e. violations of the Python "declarations are assertions"
principle (thanks to Alexey Dejneka)
* fixed several bugs in PCL's error checking (thanks to Gerd
Moellmann)
* fixed bug: printing of FILE-ERROR (thanks to Antonio
Martinez-Shotton)
* fixed bug in compilation of functions as first class values
(thanks to Antonio Martinez-Shotton)
* The compiler's handling TYPE-ERRORs which it can prove will
inevitably happen at runtime has been cleaned up and corrected in
several ways. (thanks to Alexey Dejneka)
* improved argument type checking for various basic arithmetic
operations (MAX, +, LOGXOR, etc.) which have had so much TLC
lavished on them in the past that they can be compiled in many
ways in different special cases
* fixed bug 181: compiler checks validity of user supplied type
specifiers
* cleaned up code flushing in optimization: Function calls which
should signal errors for safety purposes (e.g. which ANSI says
should signal errors when their arguments are of incorrect type)
are no longer optimized away.
* added new extension: SB-DEBUG:BACKTRACE-AS-LIST
* incremented fasl file version number, because changes in the
implementation of sequence functions like COERCE caused internal
utility functions like COERCE-TO-SIMPLE-VECTOR (used in old
inline expansions) to become undefined. (Actually these changes
were later undone, so we might very well be binary compatible
with 0.7.7 after all, but leaving the version number incremented
seemed like the simplest and most conservative thing to do.)
New in version 0.7.7, 2002-08-25
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* An alpha-quality port to the parisc architecture running Linux,
based on the old CMUCL backend, has been made. This, even more so
than the other backends, should be considered still a work in
progress; known problems include that the Linux kernel in 64-bit
mode does not propagate the correct sigcontext structure to
userspace, and consequently SBCL on a parisc64 kernel will not
work yet.
* fixed bug 189: The compiler now respects NOTINLINE declarations
for functions declared in FLET and LABELS. (I.e. "LET conversion"
is suppressed.) Also now that the compiler is looking at
declarations in the environment, it checks optimization
declarations as well, and suppresses inlining when (> DEBUG
SPEED).
* More fixes have been made to treatment of floating point
exception treatment and other Unix signals. In particular,
floating point exceptions no longer cause Bus errors on the SPARC
/Linux platform.
* The detection and handling of control stack exhaustion (infinite
or very deeply nested recursion) has changed. Stack exhaustion
detection is now done by write-protecting pages at the OS level
and applies at all optimization settings; when found, a
SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
STORAGE-CONDITION) is signalled, so stack exhaustion can no
longer be caught using IGNORE-ERRORS.
* Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
correctly when transforming recursive LABELS functions to LETs.
(thanks to Alexey Dejneka)
* Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
that are names of constants or global variables.
* Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
alien routines with docstrings.
* Bug 184 fixed: Division of ratios by the integer 0 now signals an
error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
Raymond Toy)
* Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
(thanks to Eric Marsden)
* Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
* Bug fix: The SPARC backend can now compile functions involving
LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
* Bug fix: We no longer segfault on passing a non-FILE-STREAM
stream to a functions expecting a PATHNAME-DESIGNATOR.
* Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
lambda lists. (thanks to Alexey Dejneka)
* Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
functions so that EXPORTing the name of the class doesn't cause
MAKE-INSTANCE functions from earlier DEFCLASSes to get lost
(thanks to Antonio Martinez for reporting this)
* Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
constant-folded without failing an assertion. (thanks to Einar
Floystad Dorum for reporting this)
* Bugs 123 and 165 fixed: array specializations on as-yet-undefined
types are now dealt with more correctly by the compiler.
* Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
behaviour analogous to RENAME-FILE. This puts its behaviour more
in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
Marco Antinotti)
* The fasl file version number has changed again. (because of the
bug fix involving the names of PCL MAKE-INSTANCE functions)
New in version 0.7.6, 2002-07-23
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* bug fix: Floating point exceptions are treated much more
consistently on the x86/Linux and PPC/Linux platforms.
* Array initialization with :INITIAL-ELEMENT is now much faster for
cases when the compiler cannot open code the array creation, but
does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
array accesses have also seen a speed increase.
* bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
specified. (This was at the root of some bad interactions between
SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
reporting the bug.)
* bug fix: Internal error arguments for undefined functions are now
computed correctly on the PPC/Linux platform.
* bug fix: Bad &REST syntax is now checked correctly. (thanks to
Raymond Toy's patch for CMU CL)
* Support for the Solaris 9 operating environment has been included
(thanks to Daniel Merritt)
* A very ugly but hopefully complete draft of the missing FFI
chapter of the manual has been created by reformatting the
corresponding CMU CL manual chapter into (currently very ugly and
incoherent) DocBook and bringing it up to date for SBCL behavior.
Thus, the manual is now essentially complete, at least by my
extreme once-and-only-once standards, whereby it's acceptable to
refer to the doc strings of SB-EXT functions as the primary
documentation.
* The fasl file version number has changed again, due to cleanup of
(user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
is no longer a static symbol.)
New in version 0.7.5, 2002-06-23
Back to top
* SBCL now builds with OpenMCL (version 0.12) as the
cross-compilation host; also, more progress has been made toward
bootstrapping under CLISP.
* SBCL now runs on the Tru64 (aka OSF/1) operating system on the
Alpha architecture.
* bug 158 fixed: The compiler can now deal with integer loop
increments different from 1; fixing this turned out also to fix
bug 164.
* bug 169 fixed: no more bogus warnings about using lexical
bindings despite the presence of perfectly good SPECIAL
declarations (thanks to David Lichteblau)
* bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
* bug 179 fixed: DIRECTORY can now deal with filenames with pattern
characters in them.
* bug 180 fixed: Method combination specifications no longer ignore
the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
* bug fix: Structure type predicate functions now check their
argument count as they should.
* bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
correctly. (thanks to Pierre Mai)
* minor incompatible change: The --noprogrammer option is
deprecated in favor of the new --disable-debugger option, which
is very similar. (The major difference is that it takes effect at
a slightly different time at startup, causing handling of errors
in --sysinit and --userinit files will be affected differently.)
The SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions
have been added to allow this functionality to be controlled from
ordinary Lisp code. (ENABLE-DEBUGGER should help people like the
Debian maintainers, who might want to run non-interactive scripts
to build SBCL cores which will later be used interactively.)
* minor incompatible change: The LOAD function no longer, when
given a wild pathname to load, loads all files matching that
pathname. Instead, an error of type FILE-ERROR is signalled.
New in version 0.7.4
Back to top
* bug 147 fixed: The compiler preserves its block link/count
invariants more correctly now so that it doesn't crash. (thanks
to Alexey Dejneka)
* Dynamic loading of object files in OpenBSD is now supported.
(thanks to Pierre Mai)
* COMPILE now works correctly on macros. (thanks to Matthias
Hoelzl)
* GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
no-value-for-this-character as NIL (as specified by ANSI).
* HOST-NAMESTRING on physical pathnames now returns a string that
is valid as a host argument to MERGE-PATHNAMES and to
MAKE-PATHNAME. (thanks to Christophe Rhodes)
* The Alpha port handles icache flushing more correctly. (thanks to
Dan Barlow)
* More progress has been made toward bootstrapping under CLISP.
(thanks to Christophe Rhodes)
* The fasl file format has changed again, because dynamic loading
on OpenBSD (which has non-ELF object files) motivated some
cleanups in the way that foreign symbols are transformed and
passed around.
* minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE
127), is no longer treated as whitespace by the reader, but
instead as an ordinary character. Thus e.g. (READ-FROM-STRING "A
B") returns |A B|, instead of A as it used to.
New in version 0.7.3
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* ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
Froyd porting CMU CL code originally by Douglas Thomas Crosher)
* SBCL now runs on the PPC archtiecture under Linux. It actually
did this as of 0.7.1.45, but was left out of the previous news
section (thanks to Dan Barlow)
* SBCL now runs on the Solaris operating system on SPARC
architectures (thanks to Christophe Rhodes's port of the CMUCL
runtime)
* cleanups to the runtime on SPARC, both Linux and Solaris, and for
gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
* SPARC backend cleanups, allowing builds of cores optimized for V8
and V9 SPARCS, and also emission of code targeted to a particular
backend chosen at runtime (thanks to Christophe Rhodes and
Raymond Toy)
* SBCL is closer to bootstrapping under CLISP, thanks to various
fixes by Christophe Rhodes.
* The fasl file format has changed again, to allow the compiler's
INFO database to support symbol macros.
* The user manual (in doc/) is formatted into HTML more nicely.
(thanks to coreythomas)
* The system is smarter about SUBTYPEP relationships, especially
those involving NOT types (including types such as ATOM which are
represented internally using NOT types). Thus SUBTYPEP is less
likely to return (VALUES NIL NIL) in general, and in particular
bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
Christophe Rhodes)
* The fasl file format has changed again, because the internal
representation of types now includes a new slot to support the
new SUBTYPEP-of-NOT-types logic.
* (not a change in the main branch of SBCL, but a related prototype
which can hopefully be merged into the main branch of SBCL in the
future:) Brian Spilsbury has produced a Unicode-enabled variant
of sbcl-0.7.0, available as a patch against sbcl-0.7.0 at .
* Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for
undefined dispatch macro character combinations. (thanks to
Alexey Dejneka)
* Bugfix in PARSE-NAMESTRING: we now correctly parse unix
namestrings that superficially look like logical namestrings
correctly.
* USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
can deal with.
* Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept
(name default supplied-p) for &optional and &key arguments.
(thanks to Martin Atzmueller)
New in version 0.7.2, 2002-03-24
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* incompatible change: The compiler is now less aggressive about
tail call optimization, doing it only when (> SPACE DEBUG) or (>
SPEED DEBUG). (This is an incompatible change because there are
programs which relied on the old CMU-CL-style behavior to
optimize away their unbounded recursion which will now die of
stack overflow.)
* minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
for non-GENCGC systems has been increased to 20M (since that
seems much closer to the likely performance optimum for modern
systems than the old 4M value was)
* minor incompatible change: new larger values for
*DEBUG-PRINT-LENGTH* and *DEBUG-PRINT-LEVEL*
* SBCL runs on SPARC systems now. (thanks to Christophe Rhodes'
port of CMU CL's support for SPARC, and various endianness and
other SBCL portability fixes due to Christophe Rhodes and Dan
Barlow)
* new syntactic sugar for the Unix command line: --load foo.bar is
now an alternate notation for --eval '(load "foo.bar")'.
* bug fixes:
+ The system now detects stack overflow and handles it
gracefully, at least for (OR (> SAFETY (MAX SPEED SPACE)) (=
SAFETY 3)) optimization settings. (This is a good thing in
general, and its introduction in this version should be
particularly timely for anyone whose code fails because of
suppression of tail recursion!)
+ The system now hunts for the C variable "environ" in a more
devious way, to avoid segfaults when the C library version
differs between compile time and run time. (thanks to
Christophe Rhodes)
+ INTEGER-valued CATCH tags now work. (thanks to Alexey
Dejneka, and also to Christophe Rhodes for porting the fix to
non-X86 CPUs)
+ The compiler no longer issues bogus style warnings for
undefined classes in the same source file as the DEFCLASSes
which defined them. (thanks to Stig E Sandoe for reporting
and Martin Atzmueller for fixing this)
+ fixes in CONDITION class precedence list for undefined
function errors (thanks to Alexei Dejneka)
+ *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
correctly. (thanks to Dan Barlow)
+ portability fixes aiming at bootstrapping under CLISP (thanks
to Dave McDonald and Christophe Rhodes)
+ FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
+ fixes in type translation and and type inference (thanks to
Christophe Rhodes)
+ fixes to optimizer internal errors (thanks to Alexei Dejneka)
+ various fixes in the new ports (thanks to Dan Barlow)
* several changes related to debugging:
+ suppression of tail recursion, as noted above
+ stack overflow detection, as noted above
+ The default implementation of TRACE has changed. :ENCAPSULATE
T is now the default. (For some time encapsulation has been
more reliable than the breakpoint-based :ENCAPSULATE NIL
implementation, at least on X86 systems; and I just noticed
that encapsulation also seems closer to the spirit of the
ANSI specification.)
New in version 0.7.1, 2002-01-26
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* mostly bug fixes:
+ SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set up
properly again. (There was a packaging bug in 0.7.0 which
left their definitions in SB-SYS::LOAD-FOREIGN and
SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
vital for most things which interface to C-level interfaces,
like extensions working with sockets or databases or
Perl-compatible regexes or whatever, and the need to fix this
bug is the main reason that 0.7.1 was released so soon after
0.7.0.)
+ DEFGENERIC is now choosier about the methods it redefines, so
that reLOADing a previously-LOADed file containing
DEFGENERICs does the right thing now. Thus, the Lispy edit/
reLOAD-a-little/test cycle now works as it should. (thanks to
Alexey Dejneka)
+ Bug 106 (types (COMPLEX FOO) where FOO is an obscure type)
was fixed by Christophe Rhodes. (He actually submitted this
patch months ago, and I delayed until after 0.7.0.)
+ Bug 111 (internal compiler confusion about runtime checks on
FUNCTION types) was fixed by Alexey Dejneka.
* Some internal cleanups (getting rid of variables which aren't
needed now that the byte interpreter is gone) caused the fasl
file format number to change again.
New in version 0.7.0, 2002-01-19
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* major incompatible change: The default fasl file extension, i.e.
the default extension for files produced by COMPILE-FILE, has
changed to ".fasl", for all architectures. (No longer ".x86f" and
".axpf".)
* compiler changes:
+ There are many changes in the implementation of the compiler.
SBCL is now essentially a compiler-only implementation of
ANSI Common Lisp. EVAL still "interprets" a few special
cases, but almost all the interesting cases are handled by
creating a LAMBDA expression, calling COMPILE on it, then
calling FUNCALL on the result.
+ The EVAL-WHEN code has been rewritten to be ANSI-compliant,
and various related bugs (IR1-1, IR1-2, IR1-3, IR1-3a) have
gone away. Since the code is newer, there might still be some
new bugs (though not as many as before Martin Atzmueller's
fixes:-). But the new code is substantially simpler and
clearer, and hopefully any remaining bugs will be simpler,
less fundamental, and more fixable then the bugs in the old
code.
+ The revised compiler is still a little unsteady on its feet.
In particular,
o The debugging information it produces (particularly the
names of FUNCTION objects) is sometimes much less useful
than what the old compiler produced.
o The support for inlining FOO when you (DECLAIM (INLINE
FOO)) then do (DEFUN FOO ..) in a non-null lexical
environment (e.g. within a MACROLET) has been temporarily
weakened.
+ There are new compiler optimizations for various functions:
o the sequence functions FIND, POSITION, FIND-IF,
POSITION-IF, FIND-IF-NOT, POSITION-IF-NOT, and FILL
o the math functions TRUNCATE, FLOOR, and CEILING
o the function-of-all-trades COERCE Mostly these should be
transparent, but there's one potentially-annoying problem
(bug 117): when the compiler inline-expands a function
and does type analysis on the result, it can create
control paths which have type mismatches, and when it
can't prove that those control paths aren't taken, it
will issue WARNINGs about the type mismatches. This is a
particular problem in practice for the new sequence
functions. It's not clear how this should be fixed, and
for now, a workaround is given in the entry for 117 in
the BUGS file.
+ (Because of the interaction between the two previous items --
occasional inlining problems and new inline expansions --
some of the new sequence function optimizations won't really
kick in completely until debugging information, and then
inlining, are straightened out in some future version.)
* minor incompatible changes:
+ As part of a bug fix by Christophe Rhodes to DIRECTORY
behavior, DIRECTORY no longer implicitly promotes NIL slots
of its pathname argument to :WILD. In particular, when you
ask for the contents of a directory (which you used to be
able to do without explicit wildcards, e.g. (DIRECTORY "/tmp/
")) you now need to use explicit wildcards, e.g. (DIRECTORY "
/tmp/*.*").
+ changes in behavior that ANSI explicitly defines to be
implementation dependent:
o The new compiler-only implementation still conforms with
ANSI, but acts a little different than before. Besides
the obvious changes in performance tradeoffs (that the
cost per form passed to EVAL has gone up, and the cost
per form executed by EVAL has gone down), the behavior of
the system changes a little because there are no longer
any interpreted function objects. COMPILED-FUNCTION-P is
now synonymous with FUNCTIONP, and e.g. doing COMPILE on
the output of interactive DEFUN is now a no-op.
o The value of INTERNAL-TIME-UNITS-PER-SECOND has been
increased from 100 to 1000.
o The default for the USE list in MAKE-PACKAGE and
DEFPACKAGE has changed from (:CL) to NIL.
o The CHAR-NAME of unprintable ASCII characters which,
unlike e.g. #\Newline and #\Tab, don't have names
specified in the ANSI Common Lisp standard, is now based
on their ASCII symbolic names (#\Nul, #\Soh, #\Stx, etc.)
The old CMU-CL-style names (#\Null, #\^a, #\^b, etc.) are
still accepted by NAME-CHAR, but are no longer used for
output.
+ changes in internal implementation constants:
o The default value of *BYTES-CONSED-BETWEEN-GCS* has
doubled, to 4 million. (If your application spends a lot
of time GCing and you have a lot of RAM, you might want
to experiment with increasing it even more.)
+ The SB-C-CALL package has been merged into the SB-ALIEN
package. However, almost all old code should still continue
to work without immediate update, as SB-C-CALL is now a
(deprecated) nickname for SB-ALIEN.
+ Old operator names in the style DEF-FOO are now deprecated in
favor of new corresponding names DEFINE-FOO, for consistency
with the naming convention used in the ANSI standard
(DEFSTRUCT, DEFVAR, DEFINE-CONDITION, DEFINE-MODIFY-MACRO..).
This mostly affects internal symbols, but a few supported
extensions like SB-ALIEN:DEF-ALIEN-FUNCTION are also
affected. (So e.g. DEF-ALIEN-FUNCTION becomes
DEFINE-ALIEN-FUNCTION.)
+ The debugger prompt sequence now goes "5]", "5[2]", "5[3]",
etc. as you get deeper into recursive calls to the debugger
command loop, instead of the old "5]", "5]]", "5]]]"
sequence. (I was motivated to do this when squabbles between
ILISP and SBCL left me very deeply nested in the debugger. In
the short term, this change will probably provoke more ILISP/
SBCL squabbles, but hopefully it will be an improvement in
the long run.)
+ SB-ALIEN:DEFINE-ALIEN-FUNCTION (also known by the old
deprecated name DEF-ALIEN-FUNCTION) now does DECLAIM FTYPE
for the defined function, since declaiming return types
involving aliens is (1) annoyingly messy to do by hand and
(2) vital to efficient compilation of code which calls such
functions.
+ SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are no
longer reexported by the SB-EXT package. They're solely
useful for alien code, so it seems more logical that you
should get them from the SB-ALIEN package, not in SB-EXT.
+ :SB-CONSTRAIN-FLOAT-TYPE, :SB-PROPAGATE-FLOAT-TYPE, and
:SB-PROPAGATE-FUN-TYPE are no longer considered to be
optional features. Instead, the code that they used to
control is always built into the system.
* many other bug fixes
+ DEFSTRUCT and DEFCLASS have been substantially updated to
take advantage of the new EVAL-WHEN stuff and to clean them
up in general, and they are now more ANSI-compliant in a
number of ways. Martin Atzmueller is responsible for a lot of
this.
+ Besides the cleanups discussed above, Martin Atzmueller fixed
several other bugs:
o fixes in READ-SEQUENCE and WRITE-SEQUENCE
o correct ERROR type for various file operations
o some fixes for Lisp streams
o DEFMETHOD syntax checking
o changing old weird representation of debug information as
strings (which, among their other deficiencies, don't
transform correctly when you rename packages, and don't
change their print representation when you change things
like *PACKAGE* and *PRINT-LENGTH*) to symbols and lists
of symbols He also made several improvements and fixed
several bugs in DESCRIBE.
+ Alexey Dejneka fixed many bugs, including classic bugs and
bugs he discovered himself:
o misbehavior of WRITE-STRING/WRITE-LINE
o LOOP over keys of a hash table, LOOP bugs 49b and 81 and
103, and several other LOOP problems as well
o DIRECTORY when similar filenames are present
o DEFGENERIC with :METHOD options
o bug 126, in (MAKE-STRING N :INITIAL-ELEMENT #\SPACE))
o bug in the optimization of ARRAY-ELEMENT-TYPE
o argument ordering in FIND with :TEST option
o mishandled package designator argument in APROPOS-LIST
o various problems in the backquote readmacro
o a bug in APROPOS
o probably some others that I'm not describing very well
here, since the CVS log documents them by reference to
sbcl-devel messages, and the SourceForge archives aren't
working well.:-(
+ Dan Barlow improved the Alpha port (and is making progress on
the PPC port, for those of you who think different).
+ Besides the DIRECTORY fixes and changes mentioned elsewhere,
Christophe Rhodes cleaned up the system self-test scripts (in
tests/*), contributed the optimization of FIND-IF-NOT and
POSITION-IF-NOT, and continues to work on the SPARC port (for
those of you in a position to look down upon our little
PC-compatible boxes from a great height).
+ PPRINT-LOGICAL-BLOCK now copies the *PRINT-LINES* value on
entry and uses that copy, rather than the current dynamic
value, when it's trying to decide whether to truncate output.
Thus e.g. (let ((*print-lines* 50)) (pprint-logical-block
(stream nil) (dotimes (i 10) (let ((*print-lines* 8)) (print
(aref possiblybigthings i) stream))))) should now truncate
the logical block only at 50 lines, instead of often
truncating it at 8 lines, as it did before.
* The doc/cmucl/ directory, containing old CMU CL documentation
from the time of the fork, is no longer part of the base system.
SourceForge has shut down its anonymous FTP service, and with it
my original plan for distributing the old CMU CL documentation
there. For now, if you need these files you can download an old
SBCL source release and extract them from it.
* The fasl file version number changed again, for dozens of
reasons, some of which are apparent above.
New in version 0.6.13, 2001-08-06
Back to top
* a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
* Martin Atzmueller ported Tim Moore's marvellous CMU CL
DISASSEMBLE patch, so that DISASSEMBLE output is much nicer.
* The code in the SB-PROFILE package now seems reasonably stable. I
still haven't decided what the final interface should look like
(I'd like PROFILE to interact cleanly with TRACE, since both
facilities use function encapsulation) but if you have a need for
profiling now, you can probably use it successfully with the
current CMU-CL-style interface.
* Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
ANSI-compliant, thanks to various fixes and tests from Dan
Barlow. Also, at Dan Barlow's suggestion, TRUENAME on a dangling
symbolic link now returns the dangling link itself, and for
similar reasons, TRUENAME on a cyclic symbolic link returns the
cyclic link itself. (In these cases the old code signalled an
error and looped endlessly, respectively.) Thus, DIRECTORY now
works even in the presence of dangling and cyclic symbolic links.
* Compiler trace output (the :TRACE-FILE option to COMPILE-FILE) is
now a supported extension again, since the consensus on
sbcl-devel was that it can be useful for ordinary development
work, not just for debugging SBCL itself.
* The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
NIL, i.e. ANSI behavior, i.e. the compiler now recognizes that
currently-defined functions might be redefined later with
different return types.
* Hash tables can be printed readably, as inspired by CMU CL code
of Eric Marsden and SBCL code of Martin Atzmueller.
* better error handling in CLOS method combination, thanks to
Martin Atzmueller porting Pierre Mai's CMU CL patches
* more overflow fixes for >16Mbyte I/O buffers
* A bug in READ has been fixed, so that now a single Ctrl-D
character suffices to cause end-of-file on character streams. In
particular, now you only need one Ctrl-D at the command line (not
two) to exit SBCL.
* fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
undisplaced arrays.
* fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
does the right thing.
* The implementation of some type tests, especially for CONDITION
types, is now tidier and maybe faster, due to CMU CL code
originally by Douglas Crosher, ported by Martin Atzmueller.
* Some math functions have been fixed, and there are new optimizers
for deriving the types of COERCE and ARRAY-ELEMENT-TYPE, thanks
to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
* (There are also some new optimizers in contrib/*-extras.lisp.
Those aren't built into sbcl-0.6.13, but are a sneak preview of
what's likely to be built into sbcl-0.7.0.)
* A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
CL, ported to SBCL by Martin Atzmueller)
* DESCRIBE now gives more information in some cases. (Pierre Mai's
patch to CMU CL, ported to SBCL by Martin Atzmueller)
* Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
* There's a new slam.sh hack to shorten the edit/compile/debug
cycle for low-level changes to SBCL itself, and a new
:SB-AFTER-XC-CORE target feature to control the generation of the
after-xc.core file needed by slam.sh.
* minor incompatible change: The ENTRY-POINTS &KEY argument to
COMPILE-FILE is no longer supported, so that now every function
gets an entry point, so that block compilation looks a little
more like the plain vanilla ANSI section 3.2.2.3 scheme.
* minor incompatible change: SB-EXT:GET-BYTES-CONSED now returns
the number of bytes consed since the system started, rather than
the number consed since the first time the function was called.
(The new definition parallels ANSI functions like
CL:GET-INTERNAL-RUN-TIME.)
* minor incompatible change: The old CMU-CL-style DIRECTORY
options, i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no
longer supported. Now DIRECTORY always does the abstract
Common-Lisp-y thing, i.e. :ALL T :FOLLOW-LINKS T
:CHECK-FOR-SUBDIRS T.
* Fasl file version numbers are now independent of the target CPU,
since historically most system changes which required version
number changes have affected all CPUs equally. Similarly, the
byte fasl file version is now equal to the ordinary fasl file
version.
New in version 0.6.12, 2001-05-05
Back to top
* incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE
declaration is no longer recognized. I apologize for this,
because it was listed in SB-EXT as a supported extension, but I
found that its existing behavior was poorly specified, as well as
incorrectly specified, and it looked like too much of a mess to
straighten it out. I have enough on my hands trying to get ANSI
stuff to work..
* many patches ported from CMU CL by Martin Atzmueller, with half a
dozen bug fixes in pretty-printing and the debugger, and half a
dozen others elsewhere
* fixed bug 13: Floating point infinities are now supported again.
They might still be a little bit flaky, but thanks to bug reports
from Nathan Froyd and CMU CL patches from Raymond Toy they're not
as flaky as they were.
* The --noprogrammer command line option is now supported. (Its
behavior is slightly different in detail from what the old man
page claimed it would do, but it's still appropriate under the
same circumstances that the man page talks about.)
* The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
are now supported, and enabled by default. Thus, the compiler can
handle many floating point and complex operations much less
inefficiently. (Thus e.g. you can implement a complex FFT without
consing!)
* The compiler now detects type mismatches between DECLAIM FTYPE
and DEFUN better, and implements CHECK-TYPE more correctly, and
SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
thanks to patches from Martin Atzmueller.
* various fixes to make the cross-compiler more portable to
ANSI-conforming-but-different cross-compilation hosts (notably
Lispworks for Windows, following bug reports from Arthur Lemmens)
* A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross ANSI
noncompliance in DEFMACRO &KEY argument parsing, have been fixed
thanks to Pierre Mai's CMU CL patches.
* fixes to keep the system from overflowing internal counters when
it tries to use i/o buffers larger than 16M bytes
* fixed bug 45a: Various internal functions required to support
complex special functions have been merged from CMU CL sources.
(When I was first setting up SBCL, I misunderstood a compile-time
conditional #-OLD-SPECFUN, and so accidentally deleted them.)
* improved support for type intersection and union, fixing bug 12
(e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other more
obscure bugs as well
* some steps toward byte-compiling non-performance-critical parts
of the system, courtesy of patches from Martin Atzmueller
* Christophe Rhodes has made some debian packages of sbcl at . From his
sbcl-devel e-mail of 2001-04-08 they're not completely stable,
but are nonetheless usable. When he's ready, I'd be happy to add
them to the SourceForge "File Releases" section. (And if anyone
wants to do RPMs or *BSD packages, they'd be welcome too.)
* new fasl file format version number (because of changes in
internal representation of (OR ..) types to accommodate the new
support for (AND ..) types, among other things)
New in version 0.6.11, 2001-02-25
Back to top
* Martin Atzmueller pointed out that bugs #9 and #25 are gone in
current SBCL.
* bug 34 fixed by Martin Atzmueller: dumping/loading instances
works better
* fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE, and
UPGRADED-COMPLEX-PART-TYPE now work better with of compound types
built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
* DESCRIBE now works on structure objects again.
* Most function call argument type mismatches are now handled as
STYLE-WARNINGs instead of full WARNINGs, since the compiler
doesn't know whether the function will be redefined before the
call is executed. (The compiler could flag local calls with full
WARNINGs, as per the ANSI spec "3.2.2.3 Semantic Constraints",
but right now it doesn't keep track of enough information to know
whether calls are local in this sense.)
* Compiler output is now more verbose, with messages truncated
later than before. (There should be some supported way for users
to override the default verbosity, but I haven't decided how to
provide it yet, so this behavior is still controlled by the
internal SB-C::*COMPILER-ERROR-PRINT-FOO* variables in src/
compiler/ir1util.lisp.)
* Fasl file format version numbers have increased again, because
support for the Gray streams extension changes the layout of the
system's STREAM objects.
* The Gray subclassable streams extension now works, thanks to a
patch from Martin Atzmueller.
* The full LOAD-FOREIGN extension (not just the primitive
LOAD-FOREIGN-1) now works, thanks to a patch from Martin
Atzmueller.
* The default behavior of RUN-PROGRAM has changed. Now, unlike CMU
CL but like most other programs, it defaults to copying the Unix
environment from the original process instead of starting the new
process in an empty environment.
* Extensions which manipulate the Unix environment now support an
:ENVIRONMENT keyword option which doesn't smash case or do other
bad things. The CMU-CL-style :ENV option is retained for porting
convenience.
* LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
as per Daniel Barlow's suggestion and Martin Atzmueller's patch
New in version 0.6.10, 2001-01-14
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* A patch from Martin Atzmueller seems to have solved the SIGINT
problem, and as far as we know, signal-handling now works
cleanly. (If you find any new bugs, please report them!)
* The system no longer defaults Lisp source file names to types
".l", ".cl", or ".lsp", but only to ".lisp".
* The compiler no longer uses special default file extensions for
byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
seems to expect a single default extension for all compiled code,
and there's no compelling reason to try to stretch the standard
to allow two different extensions.) Instead, byte-compiled files
default to the same extension as native-compiled files.
* Fasl file format version numbers have increased again, because a
rearrangement of internal implementation packages made some
dumped symbols in old fasl files unreadable in new cores.
* DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general,
with many fewer weird special cases.
* Bug #17 (differing COMPILE-FILE behavior between logical and
physical pathnames) has been fixed, and some related misbehavior
too, thanks to a patch from Martin Atzmueller.
* Bug #30 (reader problems) is gone, thanks to a CMU CL patch by
Tim Moore, ported to SBCL by Martin Atzmueller.
* Martin Atzmueller fixed several filesystem-related problems,
including bug #36, in part by porting CMU CL patches, which were
written in part by Paul Werkowski.
* More compiler warnings in src/runtime/ are gone, thanks to more
patches from Martin Atzmueller.
* Martin Atzmueller pointed out that bug 37 was fixed by his
patches some time ago.
New in version 0.6.9, 2000-11-28
Back to top
* DESCRIBE now works on CONDITION objects.
* The debugger now handles errors which arise when trying to print
*DEBUG-CONDITION*, so that it's less likely to fall into infinite
regress.
* The build system now uses an additional file,
customize-target-features.lisp, to allow local modifications to
the target *FEATURES* list. (The point of this is that now I can
set up a custom configuration, e.g. with :SB-SHOW debugging
features enabled, without having to worry about propagating it
into everyone's system when I do a "cvs update".) When no
customize-target-features.lisp file exists, the target *FEATURES*
list should be constructed the same way as before.
* fixed bugs in DEFCONSTANT ANSI-compatibility:
+ DEFCONSTANT now tests reassignments using EQL, not EQUAL, in
order to warn about behavior which is undefined under the
ANSI spec. Note: This is specified by ANSI, but it's not very
popular with programmers. If it causes you problems, take a
look at the new SB-INT:DEFCONSTANT-EQX macro in the SBCL
sources for an example of a workaround which you might use to
make portable ANSI-standard code which does what you want.
+ DEFCONSTANT's implementation is now based on EVAL-WHEN
instead of on pre-ANSI IR1 translation magic, so it does the
ANSI-specified thing when it's used as a non-toplevel form.
(This is required in order to implement the DEFCONSTANT-EQX
macro.)
+ (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
+ Unfortunately, non-toplevel DEFCONSTANT forms can still do
some funny things, due to bugs in the implementation of
EVAL-WHEN (bug #IR1-3). This probably won't be fixed until
0.7.x. (Fortunately, non-toplevel DEFCONSTANTs are uncommon.)
* The core file version number and fasl file version number have
been incremented, because the old noncompliant DEFCONSTANT
behavior involved calling functions which no longer exist, and
because I also took the opportunity to chop an unsupported slot
out of the DEBUG-SOURCE structure.
* fixed bug 1 (error handling before read-eval-print loop starts),
and redid debugger restarts and related debugger commands
somewhat while doing so:
+ The QUIT debugger command is gone, since it did something
rather different than the SB-EXT:QUIT command, and since it
never worked properly outside the main toplevel read/eval/
print loop. Invoking the new TOPLEVEL restart provides the
same functionality.
+ The GO debugger command is also gone, since you can just
invoke the CONTINUE restart directly instead.
+ The TOP debugger command is also gone, since it's redundant
with the FRAME 0 command, and since it interfered with
abbreviations for the TOPLEVEL restart.
* The system now recovers better from non-PACKAGE values of the
*PACKAGE* variable.
* The system now understands compound CONS types (e.g. (CONS FIXNUM
T)) as required by ANSI. (thanks to Douglas Crosher's CMU CL
patches, with some porting work by Martin Atzmueller)
* Martin Atzmueller reviewed the CMU CL mailing lists and came back
with a boatload of patches which he ported to SBCL. Now that
those have been applied,
+ The system tries to make sure that its low-priority messages
are prefixed by semicolons, to help people who like to use
syntax highlighting in their ILISP buffer. (This patch was
originally due to Raymond Toy.)
+ The system now optimizes INTEGER-LENGTH better, thanks to
more patches originally written by Raymond Toy.
+ The compiler understands coercion between single-value and
multiple-VALUES type expressions better, getting rid of some
very weird behavior, thanks to patches originally by Robert
MacLachlan and Douglas Crosher.
+ The system understands ANSI-style non-KEYWORD &KEY arguments
in lambda lists, thanks to a patch originally by Pierre Mai.
+ The system no longer bogusly warns about "abbreviated type
declarations".
+ The compiler gets less confused by inlining and RETURN-FROM,
thanks to some patches originally by Tim Moore.
+ The system no longer hangs when dumping circular lists to
fasl files, thanks to a patch originally from Douglas
Crosher.
* Martin Atzmueller also fixed ROOM, so that it no longer fails
with an undefined function error.
* gave up on fixing bug 3 (forbidden-by-ANSI warning for type
mismatch in structure slot initforms) for now, documented
workaround instead:-|
* fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor
function)
* fixed bug 5: added stubs for various Gray stream functions called
in the not-a-CL:STREAM case, so that even when Gray streams
aren't installed, at least appropriate type errors are generated
* fixed bug 8: better reporting of various PROGRAM-ERRORs
* fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
consistently in DEFMETHOD forms.
* removed bug 21 from BUGS, since Martin Atzmueller points out that
it doesn't seem to affect SBCL after all
* The C runtime system now builds with better optimization and many
fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
New in version 0.6.8, 2000-10-26
Back to top
* The system is now under CVS at SourceForge (instead of the CVS
repository on my home machine).
* The new signal handling code has been tweaked to treat register
contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
instead of (SIGNED-BYTE 32), as the C header files have it. (Code
downstream, e.g. in debug-int.lisp, has implicit dependencies on
the unsignedness of integer representation of machine words, and
that caused the system to bomb out with infinite regress when
trying to recover from type errors involving signed values, e.g.
(BUTLAST '(1 2 3) -1).)
* (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
(This was one of the bugs Peter Van Eynde reported back in July.)
* The system now uses code inspired by Colin Walters' O(N)
implementation of MAP (from the cmucl-imp@cons.org mailing list,
2 September 2000) when it can't use a DEFTRANSFORM to inline the
MAP operation, and there is more than one sequence argument to
the MAP call (so that it can't just do ETYPECASE once and for all
based on the type of the single sequence argument). (The old
non-inline implementation of the general M-argument
sequence-of-length-N case required O(M*N*N) time when any of the
sequence arguments were LISTs.)
* The QUIT :UNIX-CODE keyword argument has been renamed to QUIT
:UNIX-STATUS. (The old name still works, but is deprecated.)
* Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
have been added.
* Raymond Wiker's patches to port dynamic loading from Linux to
FreeBSD have been added.
* The BUGS file is now more nearly up to date, thanks in large part
to Martin Atzmueller's review of it.
* The debugger now flushes standard output streams before it begins
its output ("debugger invoked" and so forth).
* The core version number and fasl file version number have both
been incremented, because of incompatible changes in the layout
of static symbols.
* FINISH-OUTPUT is now called more consistently on QUIT. (It used
to not be called for a saved Lisp image.)
* Martin Atzmueller's version of a patch to fix a compiler crash,
as posted on sbcl-devel 13 September 2000, has been installed.
* Instead of installing Martin Atzmueller's patch for the compiler
transform for SUBSEQ, I deleted the compiler transform, and
transforms for some similar consing operations.
* A bug in signal handling which kept TRACE from working on OpenBSD
has been fixed.
* added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
away by constant folding
* The system now defines its address space constants in one place
(in the Lisp sources), and propagates them automatically
elsewhere (through GENESIS and the sbcl.h file). Therefore,
patching the address map is less unnecessarily tedious and
error-prone. The Lisp names of address space constants have also
been systematized.
* CVS tags like dollar-Header-dollar have been removed from the
sources, because they have never saved me trouble and they've
been source of trouble working with patches and other
diff-related operations.
* fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
New in version 0.6.7
Back to top
* The system has been ported to OpenBSD.
* The system now compiles with a simple "sh make.sh" on the systems
that it's supported on. I.e., now you no longer need to tweak
text in the target-features.lisp-expr and symlinks in src/runtime
/ by hand, the make.sh takes care of it for you.
* The system is no longer so grossly inefficient when compiling
code involving vectors implemented as general (not simple)
vectors (VECTOR T), so code which dares to use VECTOR-PUSH-EXTEND
and FILL-POINTER, or which dares to use the various sequence
functions on non-simple vectors, takes less of a performance hit.
* There is now a primitive type predicate VECTOR-T-P to test for
the (VECTOR T) type, so that e.g. (DEFUN FOO (V) (DECLARE (TYPE
(VECTOR T) V)) (AREF V 3)) can now be compiled with some
semblance of efficiency. (The old code turned the type
declaration into a full call to %TYPEP at runtime!)
* AREF on (VECTOR T) is still not fast, since it's still compiled
as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
efficiently. (The old version made full calls to SUBTYPEP at
runtime!)
* (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less
inefficiently, without making full calls to SUBTYPEP at runtime.
(Some analogous efficiency issues for non-simple vectors
specialized to element types other than T, or for non-simple
multidimensional arrays, have not been addressed. They could
almost certainly be handled the same way if anyone is motivated
to do so.)
* The changes in array handling break binary compatibility, so
*BACKEND-FASL-FILE-VERSION* has been bumped to 4.
* (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns
(VALUES T) instead of (VALUES T T).
* By following the instructions that Dan Barlow posted to
sbcl-devel on 2 July 2000, I was able to enable primitive dynamic
object file loading code for Linux. The full-blown CMU CL
LOAD-FOREIGN functionality is not implemented (since it calls ld
to resolve library references automatically, requiring
RUN-PROGRAM for its implementation), but a simpler
SB-EXT:LOAD-1-FOREIGN (which doesn't try to resolve library
references) is now supported.
* The system now flushes the standard output streams when it
terminates, unless QUIT is used with the RECKLESSLY-P option set.
It also flushes them at several other probably-convenient times,
e.g. in each pass of the toplevel read-eval-print loop, and after
evaluating a form given as an "--eval" command-line option.
(These changes were motivated by a discussion of stream flushing
issues on cmucl-imp in August 2000.)
* The source transform for TYPEP of array types no longer assumes
that an array whose element type is a not-yet-defined type is
implemented as an array of T, but instead punts, so that the type
will be interpreted at runtime.
* There is now some support for cross-compiling in make.sh: each of
the phases of make.sh has its own script. (This should be
transparent to people doing ordinary, non-cross-compile builds.)
* Since my laptop doesn't have hundreds of megabytes of memory like
my desktop machine, I became more motivated to do some items on
my to-do list in order to reduce the size of the system a little:
+ Arrange for various needed-only-at-cold-init things to be
uninterned after cold init. To support this, those things
have been renamed from FOO and *FOO* to !FOO and *!FOO*
(i.e., all symbols with such names are now uninterned after
cold init).
+ Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when
building fasl files for cold load.
+ Remove the old compiler structure pooling code (which used to
be conditional on the target feature :SB-ALLOC) completely.
+ Redo the representation of some data in cold init to be more
compact. (I also looked into supporting byte compiled code at
bootstrap time, which would probably reduce the size of the
system a lot, but that looked too complicated, so I punted
for now.)
* The maximum signal nesting depth in the src/runtime/ support code
has been reduced from 4096 to 256. (I don't know any reason for
the very large old value. If the new smaller value turns out to
break something, I'll probably just bump it back up.)
* PPRINT-LOGICAL-BLOCK is now pickier about the types of its
arguments, as per ANSI.
* Many, many bugs reported by Peter Van Eynde have been added to
the BUGS list; some have even been fixed.
* While enabling dynamic object file loading, I tried to make the
code easier to understand, renaming various functions and
variables with less ambiguous names, and changing some function
calling conventions to be Lispier (e.g. returning NIL instead of
0 for failure).
* While trying to figure out how to do the OpenBSD port, I tried to
clean up some of the code in src/runtime/. In particular, I
dropped support for non-POSIX signal handling, added various
comments, tweaked the code to reduce the number of compilation
warnings, and renamed some files to increase consistency.
* To support the new automatic configuration functionality in
make.sh, the source file target-features.lisp-expr has been
replaced with the source file base-target-features.lisp-expr and
the machine-generated file local-target-features.lisp-expr.
* fixed a stupid quoting error in make.sh so that using CMU CL
"lisp -batch" as cross-compilation host works again
New in version 0.6.6
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* DESCRIBE no longer tries to call itself recursively to describe
bound/fbound values, so that it no longer fails on symbols which
are bound to themselves (like keywords, T, and NIL).
* DESCRIBE now works on generic functions.
* The printer now prints less-screwed-up representations of
closures (not naively trying to bogusly use the %FUNCTION-NAME
accessor on them).
* A private symbol is used instead of the :EMPTY keyword previously
used to mark empty slots in hash tables. Thus (DEFVAR *HT*
(MAKE-HASH-TABLE)) (SETF (GETHASH :EMPTY *HT*) :EMPTY) (MAPHASH
(LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V))) now does what ANSI
says that it should. (You can still get similar noncompliant
behavior if bang on the hash table implementation with all the
symbols you get back from DO-ALL-SYMBOLS, but at least that's a
little harder to do.) This breaks binary compatibility, since
tests for equality to :EMPTY are wired into things like the
macroexpansion of WITH-HASH-TABLE-ITERATOR in FASL files produced
by earlier implementations.
* There's now a minimal placeholder implementation for CL:STEP, as
required by ANSI.
* An obscure bug in the interaction of the normal compiler, the
byte compiler, inlining, and structure predicates has been
patched by setting the flags for the DEFTRANSFORM of
%INSTANCE-TYPEP as :WHEN :BOTH (as per Raymond Toy's suggestion
on the cmucl-imp@cons.org mailing list).
* Missing ordinary arguments in a macro call are now detected even
when the macro lambda list contains &KEY or &REST.
* The debugger no longer complains about encountering the top of
the stack when you type "FRAME 0" to explicitly instruct it to go
to the top of the stack. And it now prints the frame you request
even if it's the current frame (instead of saying "You are
here.").
* As specified by ANSI, the system now always prints keywords as #
\: followed by SYMBOL-NAME, even when *PACKAGE* is the KEYWORD
package.
* The default initial SIZE of HASH-TABLEs is now smaller.
* Type information from CLOS class dispatch is now propagated into
DEFMETHOD bodies, so that e.g. (DEFMETHOD FOO ((X SINGLE-FLOAT))
(+ X 123.0)) is now basically equivalent to (DEFMETHOD FOO ((X
SINGLE-FLOAT)) (DECLARE (TYPE SINGLE-FLOAT X)) (+ X 123.0)) and
the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
operation, without having to do run-time type dispatch.
* The macroexpansion of DEFMETHOD has been tweaked so that it has
reasonable behavior when arguments are declared IGNORE or
IGNORABLE.
* Since I don't seem to be making big file reorganizations very
often any more (and since my archive of sbcl-x.y.zv.tar.bz2
snapshots is overflowing my ability to conveniently back them
up), I've finally checked the system into CVS. (The CVS
repository is on my home system, not at SourceForge -- putting it
on SourceForge might come later.)
* SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
high-level GC-NOTIFY-FOO functions send their output. (There's
still very little control of where low-level verbose GC functions
send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
less than it used to -- the GC-NOTIFY-FOO functions are now under
the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
* The system now stores the version string
(LISP-IMPLEMENTATION-VERSION) in only one place in the source
code, and propagates it automatically everywhere that it's
needed. Thus e.g. when I bump the version from 0.6.6 to 0.6.7,
I'll only need to modify the sources in one place.
* The C source files now include boilerplate legalese and
documentation at the head of each file (just as the Lisp source
files already did).
* At Dan Barlow's suggestion, the hyperlink from the SBCL website
to his page will be replaced with a link to his new CLiki
service.
New in version 0.6.5
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* Raymond Wiker's patches to port the system to FreeBSD have been
merged.
* The build process now looks for GNU make under the default name
"gmake", instead of "make" as it used to. If GNU make is not
available as "gmake" on your system, you can change this default
behavior by setting the GNUMAKE environment variable.
* Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
can build without error under CMU CL.
New in version 0.6.4
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* There is now a partial SBCL user manual (with some new text and
some text cribbed from the CMU CL manual).
* The beginnings of a profiler have been added (starting with the
CMU CL profiler and simplifying and cleaning up). Eventually the
main interface should be through the TRACE macro, but for now,
it's still accessed through vaguely CMU-CL-style functions and
macros exported from the package SB-PROFILE.
* Some problems left over from porting CMU CL to the new
cross-compilation bootstrap process have been cleaned up:
+ DISASSEMBLE now works. (There was a problem in using DEFMACRO
instead of SB!XC:DEFMACRO, compounded by an oversight on my
part when getting rid of the compiler *BACKEND* stuff.)
+ The value of *NULL-TYPE* was screwed up, because it was being
initialized before the type system knew the final definition
of the 'NULL type. This screwed up several key optimizations
in the compiler, causing inefficiency in all sorts of places.
(I found it because I wanted to understand why
GET-INTERNAL-RUN-TIME was consing.)
* fixed a bug in DEFGENERIC which was causing it to overwrite
preexisting PROCLAIM FTYPE information. Unfortunately this broke
binary compatibility again, since now the forms output by
DEFGENERIC to refer to functions which didn't exist in 0.6.3.
* added declarations so that SB-PCL::USE-CACHING-DFUN-P can use the
new (as of 0.6.3) transform for SOME into MAP into inline code
* changed (MOD 1000000) type declarations for Linux timeval.tv_usec
slot values to (INTEGER 0 1000000), so that the time code will no
longer occasionally get blown up by Linux returning 1000000
microseconds
* PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
its output conform to the ANSI spec. (Alas, this makes its output
uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
* A full call to MAP NIL with a single sequence argument no longer
conses.
* fixes to problems pointed out by Martin Atzmueller:
* The manual page no longer talks about multiprocessing as though
it were currently supported.
* The ILISP support patches have been removed from the
distribution, because as of version 5.10.1, ILISP now supports
SBCL without us having to maintain patches.
* added a modified version of Raymond Toy's recent CMU CL patch for
EQUALP comparison of HASH-TABLE
New in version 0.6.3
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* The system still can't cross-compile itself with
*TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
entails), but at least it can compile more of itself that way
than it used to be able to, and various buglets which were
uncovered by trying to cross-compile itself that way have now
been fixed.
* This release breaks binary compatibility again. This time at
least I've incremented the FASL file format version to 2, so that
the problem can be detected reliably instead of just causing
weird errors.
* various new style warnings:
+ using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old
definition
+ using the deprecated EVAL/LOAD/COMPILE situation names in
EVAL-WHEN
+ using the lexical binding of a variable named in the *FOO*
style
* DESCRIBE has been substantially rewritten. It now calls
DESCRIBE-OBJECT as specified by ANSI.
* *RANDOM-STATE* is no longer automatically initialized from
(GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
default behavior of the system is to repeat its behavior every
time it's run. If you'd like to change this behavior, you can
always explicitly set the seed from (GET-UNIVERSAL-TIME); whereas
under the old convention there was no comparably easy way to get
the system to repeat its behavior every time it was run.
* Support for the pre-CLTL2 interpretation of FUNCTION declarations
as FTYPE declarations has been removed, in favor of their ANSI
interpretation as TYPE FUNCTION declarations. (See p. 228 of
CLTL2.)
* The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons
when the types of their sequence arguments can be determined at
compile time. This is done through a new open code expansion for
MAP which eliminates consing for (MAP NIL ..), and reduces
consing otherwise, when sequence argument types can be determined
at compile time.
* The optimizer now transforms COERCE into an identity operation
when it can prove that the coerced object is already of the
correct type. (This can be a win for machine generated code,
including the output of other optimization transforms, such as
the MAP transform above.)
* Credit information has been moved from source file headers into
CREDITS.
* Source file headers have been made more standard.
* The CASE macro now compiles without complaining even when it has
no clauses.
New in version 0.6.2
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* (Note that the way that the PCL macroexpansions were rewritten to
accommodate the change in DEFGENERIC below breaks binary
compatibility. That is, fasl files compiled under sbcl-0.6.1 may
not run under sbcl-0.6.2. Once we get out of alpha releases, i.e.
hit release 1.0.0, we'll probably try to maintain binary
compatibility between maintenance releases, e.g. between
sbcl-1.4.3 and sbcl-1.4.4. Until then, however, it might be
fairly common for maintenance releases to break binary
compatibility.)
* A bug in the calculation of WARNINGS-P and FAILURE-P in
COMPILE-FILE has been fixed.
* The reporting of unhandled signals has been changed to print some
explanatory text as well as the report form. (Previously only the
report form was printed.)
* The macroexpansion for DEFGENERIC now DECLAIMs the function that
it defines, so that the compiler no longer issues undefined
function warnings for compiled-but-not-yet-loaded generic
functions.
* The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
and "COMMON-LISP-USER" packages have been removed. Now only the
"CL" and "CL-USER" standard nicknames from the "11.1.2
Standardized Packages" section of the ANSI spec are supported.
* The "" nickname for the "KEYWORD" package has been removed. The
reader still handles symbol tokens which begin with a package
marker as keywords, but it doesn't expose its mechanism for doing
so in the (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
* The system now issues STYLE-WARNINGs for contradictory TYPE
proclamations. (Warnings for contradictory FTYPE proclamations
would be nice too, but those can't be done usefully unless the
type system is made smarter about FUNCTION types.)
* The names of source files "*host-*.lisp" and "*target-*.lisp"
have been systematized, so that "*target-*.lisp is supposed to
exist only on the target and imply that there's a related file
which exists on the host, and *host-*.lisp is supposed to exist
only on the host and imply that there's a related file which
exists on the target. This involves a lot of renaming. Hopefully
the acute confusion caused by the renaming will be justified by
the reduction in chronic confusion..
+ runtime-type.lisp -> early-target-type.lisp
+ target-type.lisp -> late-target-type.lisp
+ early-host-format.lisp -> early-format.lisp
+ late-host-format.lisp -> late-format.lisp
+ host-error.lisp -> misc-error.lisp
+ early-error.lisp -> early-target-error.lisp
+ late-error.lisp -> late-target-error.lisp
+ host-defboot.lisp -> early-defboot.lisp
+ code/misc.lisp -> code/target-misc.lisp
+ code/host-misc.lisp -> code/misc.lisp
+ code/numbers.lisp -> code/target-numbers.lisp
+ code/early-numbers.lisp -> numbers.lisp
+ early-host-type.lisp -> early-type.lisp
+ late-host-type.lisp -> late-type.lisp
+ host-typep.lisp -> typep.lisp
+ load.lisp -> target-load.lisp
+ host-load.lisp -> load.lisp
+ host-disassem.lisp -> disassem.lisp
+ host-insts.lisp -> insts.lisp
+ byte-comp.lisp -> target-byte-comp.lisp
+ host-byte-comp.lisp -> byte-comp.lisp
+ host-signal.lisp -> signal.lisp
+ host-defstruct.lisp -> defstruct.lisp
+ late-target-type.lisp -> deftypes-for-target.lisp
Furthermore, several other previously target-only files
foo.lisp (e.g. hash-table.lisp and random.lisp) have been
split into a target-and-host foo.lisp file and a target-only
target-foo.lisp file, with their key type definitions in the
target-and-host part, so that the cross-compiler will know
more about target types.
* DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable,
have gone away. In their place are various *BACKEND-FOO*
variables corresponding to the slots of the old structure.
* A bug which caused the SB-COLD bootstrap-time package to be
propagated into the target SBCL has been fixed.
* The chill.lisp system for loading cold code into a running SBCL
now works better.
* Support for the CMU CL "scavenger hook" extension has been
removed. (It was undocumented and unused in the CMU CL sources
that SBCL was derived from, and stale in sbcl-0.6.1.)
* Various errors in the cross-compiler type system were detected by
running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
(enabling various consistency checks). Many of them were fixed,
but some hard problems remain, so the compiler is back to running
without *TYPE-SYSTEM-INITIALIZED* for now.
* As part of the cross-compiler type system cleanup, I implemented
DEF!TYPE and got rid of early-ugly-duplicates.lisp.
* I have started adding UNCROSS calls throughout the type system
and the INFO database. (Thus perhaps eventually the blanket
UNCROSS on cross-compiler input files will be able to go away,
and various kludges with it).
* CONSTANTP now returns true for quoted forms (as explicitly
required by the ANSI spec).
New in version 0.6.1
Back to top
* changed build optimization from (SAFETY 1) to (SAFETY 3) as a
short-term fix for various type-unsafety bugs, e.g. failures with
(LENGTH 123) and (MAKE-LIST -1). In the longer term, it ought to
become true that declarations are assertions even at SAFETY 1.
For now, it's not quite true even at SAFETY 3, but it's at least
more nearly true.. (Note that this change seems to increases the
size of the system by O(5%) and to decrease the speed of the
compiler by 20% or more.)
* changed ALIEN printing to be much more abbreviated, as a
short-term fix for the problem of printing dozens of lines of
distracting information about low-level system machinery as part
of the top stack frame on entry to the debugger when an undefined
function was called.
* tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that
*PACKAGE* is not reset to COMMON-LISP-USER.
* Compilation of stuff related to dyncount.lisp has been made
conditional on the :SB-DYNCOUNT target feature, so that the
ordinary core system is smaller. The various dyncount-related
symbols have been moved into a new "SB-DYNCOUNT" package.
* tty-inspect.lisp has been renamed to inspect.lisp.
* unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
feature has gone away. (When we eventually port to other flavors
of libc and/or Unix, we'll try to make the differences between
flavors invisible at the user level.)
* Various other *FEATURES* tags, and/or their associated
conditionals, have been removed if obsolescent, or given better
documentation, or sometimes given more-mnemonic names.
New in version 0.6.0
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* tidied up "make.sh" script
* tidied up system directory structure
* better "clean.sh" behavior
* added doc/FOR-CMUCL-DEVELOPERS
* many many small tweaks to output format, e.g. removing
possibly-confusing trailing #\. character in DESCRIBE-INSTANCE
* (EQUALP #\A 'A) no longer signals an error.
* new hashing code, including EQUALP hashing
* tidied up Lisp initialization and toplevel
* initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
* command line argument processing
* added POSIX-GETENV function to deal with Unix-ish environment
variables
* more-Unixy handling of *STANDARD-INPUT* and other Lisp streams,
e.g. terminating SBCL on EOF
* non-verbose GC by default
* There is no more "sbcl" shell script; the sbcl file is now the C
runtime executable (just like CMU CL).
* removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER,
and FOP-POP-FOR-EFFECT
* tweaked debug-info.lisp and debug-int.lisp to make the debugger
store symbol and package information as Lisp native symbol and
package objects instead of strings naming symbols and strings
naming packages. This way, whenever packages are renamed (as in
warm init), debug information is transformed along with
everything else.
* tweaked the optimization policy declarations which control the
building of SBCL itself. Now, among other things, the system no
longer saves source location debugging information. (This helps
two problems at once by reducing SBCL size and by keeping SBCL
from trying to look for its sources -- which may not exist --
when reporting errors.)
* added src/cold/chill.lisp, to let SBCL read its own cold sources
for debugging and testing purposes
* cleaned up printing, making the printer call PRINT-OBJECT for
instances, and using PRINT-UNREADABLE-OBJECT for most
PRINT-OBJECT methods, giving nearly-ANSI behavior
* converted almost all special variables to use *FOO* naming
convention
* deleted PARSE-TIME functionality, since it can be done portably
* moved some files out of cold init into warm init
* deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
with (VALUES) forms
* regularized formatting of source files
* added an install.sh script
* fixed ridiculous memory usage of cross-compiler by making
compiler/alloc.lisp not try to do pooling unless it can hook
itself into the GC of the cross-compilation host. Now the system
builds nicely on my old laptop.
* added :SB-ALLOC in target-features.lisp-expr
* deleted mention of :ANSI-DOC from target-features.lisp-expr
(since it was not implemented)
* re-did condition handling and note reporting in the compiler.
Notes are no longer handled by signalling conditions. Style
warnings and warnings are handled more correctly and reported in
such a way that it's easy to find one or the other in your output
(so that you can e.g. figure out which of many problems caused
COMPILE-FILE to return FAILURE-P).
* changed the severity of several compiler warnings from full
WARNING to STYLE-WARNING in order to conform with the ANSI spec;
also changed compiler note reporting so that it doesn't use the
condition system at all (and hence affects neither FAILURE-P nor
WARNINGS-P in the COMPILE-FILE command)
* made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an
ordinary function. As a consequence, START-BLOCK and END-BLOCK
declarations are no longer supported, since their implementation
was deeply intertwingled with the magical, non-ANSI treatment
that PROCLAIM received in CMU CL.
* removed bogus "support" for compiler macros named (SETF FOO), and
removed the compiler macro for SETF INFO (but only after making a
fool of myself on the cmucl-imp mailing list by posting a bogus
patch for DEFINE-COMPILER-MACRO..)
* Compiled files containing forms which have side effects on the
Lisp reader (such as DEFPACKAGE forms) are now handled more
correctly. (Compiler queuing of top level lambdas has been
suppressed by setting *TOP-LEVEL-LAMBDA-MAX* to 0. )
* deleted various currently-unused source files, e.g. gengc.lisp.
They may be added back at some point e.g. when porting to other
architectures, but until they are it's distracting to distribute
them and to try to maintain them.
* deleted "UNCROSS couldn't recurse through.." style warnings,
since there were so many of them they're just distractions, and
UNCROSS is known to be able to handle the current sources
* moved PROFILE functionality into TRACE, so that it will be clear
how the wrapping and unwrapping of functions when you profile
them interacts with the wrapping and unwrapping of functions when
you trace them. (Actually, the functionality isn't there yet, but
at least the interface specification is there. Hopefully, the
functionality will arrive with some future maintenance release.)
* removed host-oops.lisp
* changed signature of QUIT function to allow UNIX-CODE argument
* fixed READ-SEQUENCE bug
* tweaked verbose GC output so that it looks more like the progress
output that ANSI specifies for functions like LOAD
* set up the system on sourceforge.com, with home pages, mailing
lists, etc.
* added to the banner information
printed by the sbcl executable