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[Luc OGER <question706851@xxxxxxxxxxxxxxxxxxxxx>]

Question #706851 on Yade changed:
https://answers.launchpad.net/yade/+question/706851

Luc OGER gave more information on the question:
another strange behavior when I am trying to go behind the output
display error :

starting gdb with display crashes
then restarting with "-n" don't crash
the restarting with display works !!

see the extraction of the process (some thread are erased) :

mr078189:/home/oger/yade # gdb
GNU gdb (GDB; SUSE Linux Enterprise 15) 12.1
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License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
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Type "show configuration" for configuration details.
For bug reporting instructions, please see:
<http://bugs.opensuse.org/>.
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For help, type "help".
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(gdb) file python3
Reading symbols from python3...
(No debugging symbols found in python3)
Missing separate debuginfos, use: zypper install python3-base-debuginfo-3.6.15-150300.10.48.1.x86_64
(gdb) run /opt/Yade/bin/yade-2023-06-14.git-fbf7a70 /home/oger/prog_perso/yade/Bouncing_spheres.py
Starting program: /usr/bin/python3 /opt/Yade/bin/yade-2023-06-14.git-fbf7a70 /home/oger/prog_perso/yade/Bouncing_spheres.py
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib64/libthread_db.so.1".
Welcome to Yade 2023-06-14.git-fbf7a70
Using python version: 3.6.15 (default, Sep 23 2021, 15:41:43) [GCC]
[Detaching after fork from child process 23433]
TCP python prompt on localhost:9000, auth cookie `ckydas'
[New Thread 0x7fffc821e700 (LWP 23435)]
[New Thread 0x7fffc799d700 (LWP 23436)]
XMLRPC info provider on http://localhost:21000
................

Thread 1 "python3" received signal SIGSEGV, Segmentation fault.
0x00007ffff7d5439b in PyModule_GetState () from /usr/lib64/libpython3.6m.so.1.0
(gdb) s
Single stepping until exit from function PyModule_GetState,
which has no line number information.
crashHandler (sig=32767) at /home/oger/yade/trunk/core/main/pyboot.cpp:9
9       {
(gdb) b 8
Breakpoint 1 at 0x7ffff2389730: /data_1/oger/full_yade_local/trunk/core/main/pyboot.cpp:8. (2 locations)
(gdb) run /opt/Yade/bin/yade-2023-06-14.git-fbf7a70 -n
The program being debugged has been started already.
Start it from the beginning? (y or n) y
Starting program: /usr/bin/python3 /opt/Yade/bin/yade-2023-06-14.git-fbf7a70 -n
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib64/libthread_db.so.1".
Welcome to Yade 2023-06-14.git-fbf7a70
Using python version: 3.6.15 (default, Sep 23 2021, 15:41:43) [GCC]
[Detaching after fork from child process 23700]
TCP python prompt on localhost:9000, auth cookie `cdausy'
[New Thread 0x7fffca198700 (LWP 23703)]
[New Thread 0x7fffc9957700 (LWP 23704)]
XMLRPC info provider on http://localhost:21000
[New Thread 0x7fffc8c89700 (LWP 23705)]
[[ ^L clears screen, ^U kills line. F8 plot. ]]

In [1]: run /opt/Yade/bin/yade-2023-06-14.git-fbf7a70 /home/oger/prog_perso/yade/Bouncing_spheres.py
Welcome to Yade 2023-06-14.git-fbf7a70
TCP python prompt on localhost:9001, auth cookie `descsk'
[New Thread 0x7fffba1c5700 (LWP 23732)]
[New Thread 0x7fffb99c4700 (LWP 23733)]
XMLRPC info provider on http://localhost:21001
.................................
[New Thread 0x7fff10ff9700 (LWP 23772)]
Running script /home/oger/prog_perso/yade/Bouncing_spheres.py
[[ ^L clears screen, ^U kills line. F12 controller, F11 3D view (press "h" in 3D view for help), F10 both, F9 generator, F8 plot. ]]

In [1]: [New Thread 0x7fff09c7d700 (LWP 23781)]
[Thread 0x7fff09c7d700 (LWP 23781) exited]
....................
[New Thread 0x7ffeebfff700 (LWP 23806)]
[Thread 0x7ffeebfff700 (LWP 23806) exited]

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