Forum > Debugger
Cannot debug on Linux
Anonymous:
Hello to all
my Linux box is a Slackware 10.1 and I have installed Lazarus 0.9.10.
When I try to run a project from the IDE, the debugger enter the error state.
My settings are : use gdb (ver. 6.3) with /usr/bin/gdb as the path; the file /etc/fpc.cfg has the option -g enabled.
After the error I look at the debugger window and the last lines are :
(gdb)
<-exec-run>
^running
(gdb)
&"Cannot exec : No such file or directory.\n"
&"You can't do that without a process to debug.\n"
^error,msg="You can't do that without a process to debug."
(gdb)
<info program>
&"info program\n"
~"The program being debugged is not being run.\n"
^done,reason="exited",exit-code="0177"
(gdb)
Please note that the executable file works correctly if launched from the shell. Also note that the previous Lazarus 0.9.8 worked fine on the same Linux box.
Any idea about what I'm doing wrong ?[/quote][/code]
Marc:
In the same debugger window, do you see some lines where the filename is set ?
VitFer:
I'm not in front of my Linux box now but I don't remember such a line.
:cry:
Marc:
Strange.
Did you try it with an empty new app (single form) saved on a path without spaces, with an unit and project name with a short lowercase name, only using lower ascii ? (just to exclude some possible problems)
VitFer:
Hi Marc
sorry for the late reply.
I've created a simple project, with an empty form and only the default code inside the unit.
The problem is still the same so I've pasted the entire message in the debugger window. I hope this can help.
<-gdb-set env PWD=/home/vitfer>
^done
(gdb)
<-gdb-set env QTDIR=/usr/lib/qt>
^done
(gdb)
<-gdb-set env SHELL=>
~"Setting environment variable \"SHELL\" to null value.\n"
^done
(gdb)
<-gdb-set env SHLVL=1>
^done
(gdb)
<-gdb-set env T1LIB_CONFIG=/usr/share/t1lib/t1lib.config>
^done
(gdb)
<-gdb-set env TERM=dumb>
^done
(gdb)
<-gdb-set env USER=vitfer>
^done
(gdb)
<-gdb-set env WINDOW_MANAGER=metacity>
^done
(gdb)
<-file-exec-and-symbols "/home/vitfer/test/project1">
~"Using host libthread_db library \"/lib/libthread_db.so.1\".\n"
^done
(gdb)
<-environment-cd "/home/vitfer/test/">
^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"
~"0x0805368c SYSTEM_FPC_CPUINIT\n"
^done
(gdb)
<-gdb-set language pascal>
^done
(gdb)
<-break-insert -t main>
^done,bkpt={number="1",type="breakpoint",disp="del",enabled="y",addr="0x080535b0",func="main",file="project1.lpr",line="11",times="0"}
(gdb)
<-break-insert FPC_RAISEEXCEPTION>
^done,bkpt={number="2",type="breakpoint",disp="keep",enabled="y",addr="0x0805ce72",at="<fpc_raiseexception+6>",times="0"}
(gdb)
<-break-insert FPC_BREAK_ERROR>
^done,bkpt={number="3",type="breakpoint",disp="keep",enabled="y",addr="0x0805f4c2",at="<SYSTEM_HANDLEERRORADDRFRAME$LONGINT$POINTER$POINTER+6>",times="0"}
(gdb)
<-break-insert FPC_RUNERROR>
^done,bkpt={number="4",type="breakpoint",disp="keep",enabled="y",addr="0x0805f592",at="<SYSTEM_RUNERROR$WORD+6>",times="0"}
(gdb)
<info file>
&"info file\n"
~"Symbols from \"/home/vitfer/test/project1\".\n"
~"Local exec file:\n"
~"\t`/home/vitfer/test/project1', file type elf32-i386.\n"
~"\tEntry point: 0x8053490\n"
~"\t0x080480f4 - 0x08048107 is .interp\n"
~"\t0x08048108 - 0x08049368 is .hash\n"
~"\t0x08049368 - 0x0804bc38 is .dynsym\n"
~"\t0x0804bc38 - 0x0804f318 is .dynstr\n"
~"\t0x0804f318 - 0x0804f832 is .gnu.version\n"
~"\t0x0804f834 - 0x0804f884 is .gnu.version_r\n"
~"\t0x0804f884 - 0x0804f8c4 is .rel.dyn\n"
~"\t0x0804f8c4 - 0x08050ca4 is .rel.plt\n"
~"\t0x08050ca4 - 0x08050cbe is .init\n"
~"\t0x08050cc0 - 0x08053490 is .plt\n"
~"\t0x08053490 - 0x081a8700 is .text\n"
~"\t0x081a8700 - 0x081a871e is .fini\n"
~"\t0x081a8720 - 0x081a8724 is .eh_frame\n"
~"\t0x081a9000 - 0x081a9008 is .ctors\n"
~"\t0x081a9008 - 0x081a9010 is .dtors\n"
~"\t0x081a9010 - 0x081a9014 is .jcr\n"
~"\t0x081a9014 - 0x081a9124 is .dynamic\n"
~"\t0x081a9124 - 0x081a9128 is .got\n"
~"\t0x081a9128 - 0x081a9b24 is .got.plt\n"
~"\t0x081a9b24 - 0x0823d850 is .data\n"
~"\t0x0823d850 - 0x08253e48 is .bss\n"
^done
(gdb)
<-exec-run>
^running
(gdb)
&"Cannot exec : No such file or directory.\n"
&"You can't do that without a process to debug.\n"
^error,msg="You can't do that without a process to debug."
(gdb)
<info program>
&"info program\n"
~"The program being debugged is not being run.\n"
^done,reason="exited",exit-code="0177"
(gdb)
What do you think about the message
"No symbol \"FPC_THREADVAR_RELOCATE_PROC\" in current context.\n" ?
Thank you very much for your help
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