Lazarus is not working when I use a debugger
lazarus / 8-Other

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dotniet · 2009-10-14 10:22

Hi.
I have Lazarus SVN (0929) on Ubuntu.

I can compile and run programs in Lazarus ONLY if I don't have a
debugger defined in the Environment->Options panel.

If I define 'Gnu debugger' (/usr/bin/gdb) then Lazarus says
'debugging...' and the program never shows on screen. All I can do is
to press the Stop button.

PS: the path to debugger exists.

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Marc · 2009-10-14 11:57

What is the output of the view - debugger - debugoutput window ?

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dotniet · 2009-10-14 15:50

I will look there soon.

Anyway, I think it cannot connect to the debugger because when I put a
breakpoint into the source code, it is shown as invalid ('?' during
desing and them during runtime an 'X').

Again: the (default) path to the debugger is valid. I just checked.
I am running Lazarus without root permissions.

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dotniet · 2009-10-14 16:24

<-file-exec-and-symbols
"/megx/home/me/my_data/programare/lazarus_maper3/maper.exe">
^done

(gdb)

<-gdb-set language pascal>
^done

(gdb)

<-environment-cd .>
^done

(gdb)

<-environment-cd "/megx/home/me/my_data/programare/lazarus_maper3/">
^done

(gdb)

<-data-evaluate-expression FPC_THREADVAR_RELOCATE_PROC>
&"No symbol \"FPC_THREADVAR_RELOCATE_PROC\" in current context.\n"

^error,msg="No symbol \"FPC_THREADVAR_RELOCATE_PROC\" in current
context."

(gdb)

<info functions FPC_CPUINIT>
&"info functions FPC_CPUINIT\n"

~"All functions matching regular expression \"FPC_CPUINIT\":\n"

~"\n"

~"Non-debugging symbols:\n"

~"0x08049a10  SYSTEM_FPC_CPUINIT\n"

^done

(gdb)

<-exec-arguments >
^done

(gdb)

<-gdb-set language pascal>
^done

(gdb)

<info address main>
&"info address main\n"

~"Symbol \"main\" is a function at address 0x80483f0.\n"

^done

(gdb)

<-break-insert -t *134513648>
^done,bkpt={number="9",type="breakpoint",disp="del",enabled="y",addr="
0x080483f0",func="main",file="maper3.lpr",fullname="/megx/home/me/my_d
ata/programare/lazarus_maper3/maper3.lpr",line="84",times="0"}

(gdb)

<-break-insert FPC_RAISEEXCEPTION>
^done,bkpt={number="10",type="breakpoint",disp="keep",enabled="y",addr
="0x08055986",at="<fpc_raiseexception+6>",times="0"}

(gdb)

<-break-insert FPC_BREAK_ERROR>
^done,bkpt={number="11",type="breakpoint",disp="keep",enabled="y",addr
="0x08058a60",at="<SYSTEM_HANDLEERRORADDRFRAME$LONGINT$POINTER$POINTER
>",times="0"}

(gdb)

<-break-insert FPC_RUNERROR>
^done,bkpt={number="12",type="breakpoint",disp="keep",enabled="y",addr
="0x08058b53",at="<SYSTEM_RUNERROR$WORD+3>",times="0"}

(gdb)

<info file>
&"info file\n"

~"Symbols from
\"/megx/home/me/my_data/programare/lazarus_maper3/maper.exe\".\n"

~"Local exec file:\n"

~"\t`/megx/home/me/my_data/programare/lazarus_maper3/maper.exe', \n"

~"        file type elf32-i386.\n"

~"\tEntry point: 0x8095c50\t0x08048080 - 0x08095cc0 is .text\n"

~"\t0x08096000 - 0x080b47b0 is .data\n"

~"\t0x080b47b0 - 0x080b8484 is .bss\n"

^done

(gdb)

<-exec-run>
^running

(gdb)

&"warning: Lowest section in system-supplied DSO at 0xffffe000 is
.hash at ffffe0b4\n"

*stopped,thread-id="0",frame={addr="0x080483f0",func="main",args=[],fi
le="maper3.lpr",fullname="/megx/home/me/my_data/programare/lazarus_map
er3/maper3.lpr",line="84"}

(gdb)

<info program>
&"info program\n"

~"\tUsing the running image of child process 19328.\n"

~"Program stopped at 0x80483f0.\n"

~"It stopped at a breakpoint that has since been deleted.\n"

~"Type \"info stack\" or \"info registers\" for more information.\n"

^done

(gdb)

<-break-insert tester.sh:1>
&"No source file named tester.sh.\n"

^error,msg="No source file named tester.sh."

(gdb)

<-exec-continue>
^running

(gdb)

*stopped,reason="signal-received",signal-name="SIGINT",signal-
meaning="Interrupt",thread-
id="0",frame={addr="0xffffe405",func="__kernel_vsyscall",args=[]}

(gdb)

<-symbol-list-lines
/megx/home/me/my_data/programare/lazarus_maper3/maper3.lpr>
^done,lines=[{pc="0x08048080",line="30"},{pc="0x0804808c",line="30"},{
pc="0x080480bf",line="32"},{pc="0x080480e0",line="33"},{pc="0x080480e7
",line="34"},{pc="0x08048109",line="35"},{pc="0x08048110",line="39"},{
pc="0x08048124",line="40"},{pc="0x08048132",line="41"},{pc="0x08048139
",line="44"},{pc="0x08048148",line="46"},{pc="0x0804814c",line="48"},{
pc="0x08048176",line="50"},{pc="0x080481a3",line="54"},{pc="0x080481ca
",line="58"},{pc="0x080481dd",line="59"},{pc="0x08048214",line="59"},{
pc="0x08048220",line="62"},{pc="0x0804822f",line="62"},{pc="0x08048264
",line="63"},{pc="0x08048274",line="64"},{pc="0x08048285",line="65"},{
pc="0x080482a1",line="65"},{pc="0x080482c0",line="68"},{pc="0x080482cc
",line="68"},{pc="0x080482de",line="69"},{pc="0x080482eb",line="70"},{
pc="0x08048310",line="73"},{pc="0x0804831c",line="73"},{pc="0x08048341
",line="75"},{pc="0x08048398",line="76"},{pc="0x080483c6",line="77"},{
pc="0x080483df",line="77"},{pc="0x080483f0",line="84"},{pc="0x080483fe
",line="85"},{pc="0x0804841d",line="86"},{pc="0x08048436",line="87"},{
pc="0x08048440",line="88"},{pc="0x0804844a",line="89"}]

(gdb)

<-exec-continue>
^running

(gdb)

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dotniet · 2009-10-14 16:31

Quote from: dotniet on October 14, 2009, 06:24:38 pm(gdb)

<-symbol-list-lines
/megx/home/me/my_data/programare/lazarus_maper3/maper3.lpr>
^done,lines=[{pc="0x08048080",line="30"},{pc="0x0804808c",line="30"},



This is line 30:

  ErrorMsg:= CheckOptions('h','help');

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Marc · 2009-10-14 17:41

Quote from: dotniet on October 14, 2009, 05:50:32 pmI will look there
soon.

Anyway, I think it cannot connect to the debugger because when I put a
breakpoint into the source code, it is shown as invalid ('?' during
desing and them during runtime an 'X').

Again: the (default) path to the debugger is valid. I just checked.
I am running Lazarus without root permissions.

According to the output you have set a breakpoint on tester.sh That
doesn't look like a pascal source file to me. You don't have to be
root to debug your app.

From the output I see it should work. Is it a graphic app, or a
console app ?

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dotniet · 2009-10-14 18:21

Console app.

That is a test file, to test the resulted compiled application. It has
absolutely nothing to do with my Lazarus project.
I think I open it at a moment in Lazarus (just used Lazarus as
editor). But I don't think Lazarus compiled the file into my project.
I mean it can't compile a SH file. Right?