Is it posible to use ddd with lazarus?
lazarus / 12-Debugger

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cpalx · 2011-06-09 16:24

in Linux,

Is it posible to use ddd with lazarus?

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Martin_fr · 2011-06-09 17:11

DDD is just a front-end, assuming you mean DDD using gdb as the actual
debugger, then yes, that should (or could) work.

BUT: some features may not work.

FPC can write stabs (-g) or dwarf info (-gw). GDB can read both.

GDB has troubles with some values, as they can either not be correctly
represented in stabs/dwarf, or gdb has an incomplete implementation
(and/or for either of the 2 first two reasons, fpc may write
"workaround" debug info)

Lazarus uses GDB, but Lazarus does correct some of the issues (not
all)

Examples (depend on gdb version / stabs or dwarf used... / fpc version
used) sorry I haven't got an exact list:

- Sometimes it is necessary to explicitly dereference a symbol "foo^",
where this should not be needed in pascal. ((dyn-)array, objects, var
param)
- Sometimes a symbol must be typecasted to it's own type TFoo(AFoo)
 (var-param)
- Variant values need special processing
- In nested procedures, variables visible to pascal from the outer
procedure, require explicit stack-frame selection (and you need to
pick the correct frame)
...


Otherwise, I have no idea if DDD special features work.
e.g I do not know if DDD can recognize pascal arrays, and display them
as table/graph