Lazarus crashes on debuging Hello world
lazarus / 12-Debugger

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Vakaras · 2008-05-12 19:37

I have a simple program (Hello world in my national language):

program sveikas_pasauli;

var
   vardas : string[20];
   masyvas : array [1..10, 1..10] of integer;
  
begin
     writeln('Įveskite savo vardą');
     readln(vardas);
     writeln('Labas, ', vardas, ', ačiū, kad naudojies „Lazarus“');
     readln(vardas);
end.

when debuger is set to "(none)" it works perfect, but when I set
debugger to gdb and try to run my program Lazarus crashes. Here is
output:

./lazarus
TApplication.IconChanged - TODO: convert this message...no
implementation in gtk or win32
NOTE: miscellaneous options file not found - using defaults
Pastaba: nerastas CodeTools nustatymų failas - naudojami numatytieji
nustatymai.
NOTE: help options config file not found - using defaults
GetAdjustment 08B7BE88=LCLWinapiWidget [FPr]
LCLObject=B738CCE0=SynEdit1:TSynEdit<NOT HandleAllocated>
GetAdjustment 08B7E448=LCLWinapiWidget [FStPr]
LCLObject=B7385570=MessageTreeView:TTreeView<NOT HandleAllocated>
[TMainIDE.DoRunProject] A
TMainIDE.DoInitProjectRun A True 0
TMainIDE.DoInitProjectRun B
TMainIDE.DoSaveAll
TCompiler.Compile WorkingDir="/media/data/baltix-
mokyklai/lazarus_lokalizacija/Paskalio_programa/"
CompilerFilename="/usr/bin/ppc386" CompilerParams=" -S2cgi -OG1 -gl
-vewnhi -l -Fu. -osveikas_pasauli sveikas_pasauli.lpr"
[TCompiler.Compile] CmdLine="/usr/bin/ppc386  -S2cgi -OG1 -gl -vewnhi
-l -Fu. -osveikas_pasauli sveikas_pasauli.lpr"
Hint: Start of reading config file /etc/fpc.cfg
Hint: End of reading config file /etc/fpc.cfg
Warning: You are using the obsolete switch -OG
Free Pascal Compiler version 2.2.0 [2008/04/01] for i386
Copyright (c) 1993-2007 by Florian Klaempfl
Target OS: Linux for i386
Compiling sveikas_pasauli.lpr
sveikas_pasauli.lpr(5,4) Note: Local variable "masyvas" not used
Linking sveikas_pasauli
14 lines compiled, 0.4 sec
1 warning(s) issued
2 hint(s) issued
1 note(s) issued
[TCompiler.Compile] end
[TDebugManager.DoInitDebugger] A
[TCmdLineDebugger] Debug PID: 13982
[Debugger] Log output: &"No symbol table is loaded.  Use the \"file\"
command.\n"
TGDBMIDebugger.ProcessResult Error: ,msg="No symbol table is loaded.
 Use the \"file\" command."
[Debugger] Running GDB version: C
[TDebugger.SetFileName] "/media/data/baltix-
mokyklai/lazarus_lokalizacija/Paskalio_programa/sveikas_pasauli"
[TDebugManager.DoInitDebugger] END
[TMainIDE.DoRunProject] B TGDBMIDebugger
TDebugManager.RunDebugger A True Destroying=False
TDebugManager.RunDebugger B TGDBMIDebugger
TGDBMIDebugger.StartDebugging WorkingDir="/media/data/baltix-
mokyklai/lazarus_lokalizacija/Paskalio_programa/"
[Debugger] Log output: &"No symbol \"FPC_THREADVAR_RELOCATE_PROC\" in
current context.\n"
TGDBMIDebugger.ProcessResult Error: ,msg="No symbol
\"FPC_THREADVAR_RELOCATE_PROC\" in current context."
[Debugger] Log output: &"info functions FPC_CPUINIT\n"
[Debugger] Log output: &"info address main\n"
[Debugger] Log output: &"info file\n"
[Debugger] File type: elf32-i386
[Debugger] Entry point: 0x80603a0\t0x08048080 - 0x08060400 is .text
[WARNING] Debugger: Unknown stopped reason:
[Debugger] Log output: &"info program\n"
[Debugger] Target PID: 13983

when I tryed to run Lazarus compiled program alone it worked, but in
gdb I get error:

$ gdb sveikas_pasauli
GNU gdb 6.8-debian
Copyright (C) 2008 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later
<http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.  Type "show
copying"
and "show warranty" for details.
This GDB was configured as "i486-linux-gnu"...
(gdb)
(gdb) list
1       program sveikas_pasauli;
2
3       var
4          vardas : string[20];
5          masyvas : array [1..10, 1..10] of integer;
6         
7       begin
8            writeln('Įveskite savo vardą');
9            readln(vardas);
10           writeln('Labas, ', vardas, ', ačiū, kad naudojies
„Lazarus“');
(gdb) break 11
Breakpoint 1 at 0x8048141: file sveikas_pasauli.lpr, line 11.
(gdb) run
Starting program: /media/data/baltix-
mokyklai/lazarus_lokalizacija/Paskalio_programa/sveikas_pasauli
Įveskite savo vardą
čę„iįė
Labas, čę„iįė, ačiū, kad naudojies „Lazarus“

Breakpoint 1, main () at sveikas_pasauli.lpr:11
11           readln(vardas);
(gdb) print vardas
No symbol "vardas" in current context.
(gdb)

my program I can debug normaly just when I rename it from
sveikas_pasauli.lpr to sveikas_pasauli.pas and compile with fpc -g
sveikas_pasauli.pas

I tryed on both Lazarus versions 0.9.24 (from Ubuntu repository) and
0.9.25 (from svn).
P.S. OS: ubuntu hardy

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Marc · 2008-05-16 12:05

yes debugging of console applications in Lazarus is not supported (yet
?)