Problems discovered in branches/wxpropgrid

Developer forums (C::B DEVELOPMENT STRICTLY!) > Development

Problems discovered in branches/wxpropgrid_debugger SVN7712

<< < (5/5)

mmccarty12:

--- Quote from: oBFusCATed on February 17, 2012, 06:03:00 pm ---About the compiler: Because you're using some self compiled compiler or compiler compiled by someone else. And I wanted to remove one uncertainty.
--- End quote ---
I am using the rpm of gcc-4.4.

--- Quote ---About the message:
It has great meaning if you know how to read it :)
It is a debug message, telling you/me what C::B is doing. In this case it is telling to which process C::B is sending SIGINT. SIGINT is the same as Ctrl+C in terminal.
And in order to insert a new breakpoint, C::B has to stop the execution of the debuggee and then it can insert breakpoints then it will resume it.
Unfortunately this is not very reliable, because there are many different ways to do it, depending on the version of gdb and os.

Newer gdb's are supposed to interrupt the process, when they receive the SIGINT, older ones work only when the debuggee receives the SIGINT signal.
Unfortunately for some programs newer gdbs don't print the pid information during startup and we don't know the debuggee's PID, thus C::B falls back to sending signal directly to GDB.

And for some unknown reason, you newer gdb's fail to interrupt the debuggee, when they receive the SIGINT.
I guess you can try to ask the gdb devs in #gdb.

--- End quote ---

So given this line:

--- Code: ---Code::Blocks is trying to interrupt process with pid: 21664; child pid: 0 gdb pid: 21664
--- End code ---
CB is sending a SIGINT to gdb(pid 21664) to interrupt child(pid 0)[that does not exist] and is failing?

Why then would your gdb-7.4/7.3/7.1 work and mine does not? I really cannot expect you to answer this question, but if you know it would help.

--- Quote ---Do you have SELinux enabled? If you have, can you try without it?

--- End quote ---
No clue.

--- Quote ---p.s. please post the line from gdb-6.8!

--- End quote ---
Assuming you want the gdb start-up message when running gdb-6.8, here it is:
in Debugger tab

--- Code: ---Building to ensure sources are up-to-date
Build succeeded
Selecting target:
Debug
Adding source dir: /scratch/mccarty/Dem3D/Dem3dPre/
Adding source dir: /
Adding file: bin/Debug/Dem3dPreDebug-2012-02-17
Starting debugger:
done
Registered new type: wxString
Registered new type: STL String
Registered new type: STL Vector
Setting breakpoints
Debugger name and version: GNU gdb 6.8
Child process PID: 29653

--- End code ---

As an added measure, here is what is displayed in Debugger tab when using gdb-7.4 for me.

--- Code: ---Building to ensure sources are up-to-date
Build succeeded
Selecting target:
Debug
Adding source dir: /scratch/mccarty/Dem3D/Dem3dPre/
Adding source dir: /
Adding file: bin/Debug/Dem3dPreDebug-2012-02-17
Starting debugger:
done
Registered new type: wxString
Registered new type: STL String
Registered new type: STL Vector
Setting breakpoints
Debugger name and version: GNU gdb (GDB) 7.4

--- End code ---

In Debugger[debug] tab

--- Code: ---LD_LIBRARY_PATH=.:/usr/lib:/scratch/mccarty/boost_1_35_0/libs:/opt/intel/Compiler/11.0/081/lib/intel64:/opt/intel/Compiler/11.0/081/mkl/lib/em64t:.:/philo/filesystems/maxwell/release/passage_flow/bin/LINUX/mpi/lib:/usr/lib:/usr/bin:/usr/lib/pkgconfig:/lib:/usr/local/lib/wx:/usr/local/lib:/scratch/mccarty/boost/build/lib:/usr/local/cuda/lib64
Command-line: /scratch/mccarty/gdb-6.8/build/bin/gdb -nx -fullname -quiet -args ../debug/demppDbg
Working dir : /scratch/mccarty/dempp/trunk/
> set prompt >>>>>>cb_gdb:
(gdb) >>>>>>cb_gdb:
> show version
GNU gdb 6.8
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 "x86_64-unknown-linux-gnu".
>>>>>>cb_gdb:
> set confirm off
>>>>>>cb_gdb:
> set width 0
>>>>>>cb_gdb:
> set height 0
>>>>>>cb_gdb:
> set breakpoint pending on
>>>>>>cb_gdb:
> set print asm-demangle on
>>>>>>cb_gdb:
> set unwindonsignal on
>>>>>>cb_gdb:
> set disassembly-flavor intel
>>>>>>cb_gdb:
> source /scratch/mccarty/codeblocksSVN/trunk/build/share/codeblocks/scripts/stl-views-1.0.3.gdb
>>>>>>cb_gdb:
> set backtrace limit 0

>>>>>>cb_gdb:>>>>>>cb_gdb:
> cd ../debug
>>>>>>cb_gdb:
> directory /scratch/mccarty/dempp/trunk/
>>>>>>cb_gdb:
> directory /
>>>>>>cb_gdb:
> run

--- End code ---

And here is what is displayed in Debugger(debug) tab using gdb-7.4

--- Code: ---LD_LIBRARY_PATH=.:/opt/intel/Compiler/11.0/081/lib/intel64:/opt/intel/Compiler/11.0/081/mkl/lib/em64t:.:/philo/filesystems/maxwell/release/passage_flow/bin/LINUX/mpi/lib:/usr/lib:/usr/bin:/usr/lib/pkgconfig:/lib:/usr/local/lib/wx:/usr/local/lib:/scratch/mccarty/boost/build/lib:/usr/local/cuda/lib64
Command-line: /scratch/mccarty/gdb-7.4/build/bin/gdb -nx -fullname -quiet -args bin/Debug/Dem3dPreDebug-2012-02-17
Working dir : /scratch/mccarty/Dem3D/Dem3dPre/
> set prompt >>>>>>cb_gdb:
Reading symbols from /scratch/mccarty/Dem3D/Dem3dPre/bin/Debug/Dem3dPreDebug-2012-02-17...
done.
(gdb) >>>>>>cb_gdb:
> show version
GNU gdb (GDB) 7.4
Copyright (C) 2012 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 "x86_64-unknown-linux-gnu".
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>.
>>>>>>cb_gdb:
> set confirm off
>>>>>>cb_gdb:
> set width 0
>>>>>>cb_gdb:
> set height 0
>>>>>>cb_gdb:
> set breakpoint pending on
>>>>>>cb_gdb:
> set print asm-demangle on
>>>>>>cb_gdb:
> set unwindonsignal on
>>>>>>cb_gdb:
> set disassembly-flavor intel
>>>>>>cb_gdb:
> source /scratch/mccarty/codeblocksSVN/trunk/build/share/codeblocks/scripts/stl-views-1.0.3.gdb
>>>>>>cb_gdb:
> set backtrace limit 0

>>>>>>cb_gdb:>>>>>>cb_gdb:
> directory /scratch/mccarty/Dem3D/Dem3dPre/
>>>>>>cb_gdb:
> directory /
>>>>>>cb_gdb:
> break "/scratch/mccarty/Dem3D/Dem3dPre/code/objects/model/PreprocessorModelClass.cpp:253"
Breakpoint 1 at 0x46c4a5: file /scratch/mccarty/Dem3D/Dem3dPre/code/objects/model/PreprocessorModelClass.cpp, line 253.
>>>>>>cb_gdb:
> run
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib64/libthread_db.so.1".

--- End code ---

oBFusCATed:
OK, your logs are not complete, but yes I'm correct at thinking that child pid detection fails with gdb 7+ and is working correctly with gdb 6.8.

About the sigint problem, only gdb devs can tell you.

mmccarty12:

--- Quote from: oBFusCATed on February 17, 2012, 06:54:48 pm ---OK, your logs are not complete

--- End quote ---

What is missing?

Navigation

[0] Message Index

[*] Previous page

Go to full version