OpenBSD: Segfault on closing GUI

[thyssentishman]

When closing the GUI on OpenBSD, netgen segfaults.

Steps to reproduce:

1. Start netgen
2. Press 'Quit' -> 'Yes'

The segfault was introduced by this commit: 7382240. Reverting it avoids the segfault.

Backtrace

Reading symbols from netgen-mesher...
[New process 104072]
[New process 472060]
[New process 441334]
[New process 258915]
[New process 536766]
[New process 548222]
[New process 206266]
[New process 380431]
[New process 467505]
[New process 567411]
[New process 580122]
Core was generated by `netgen-mesher'.
Program terminated with signal SIGSEGV, Segmentation fault.
#0  0x0000022739c58f65 in take_gil.llvm () from /usr/local/lib/libpython3.12.so.0.0
[Current thread is 1 (process 104072)]
(gdb) bt
#0  0x0000022739c58f65 in take_gil.llvm () from /usr/local/lib/libpython3.12.so.0.0
#1  0x0000022739c59ebb in PyEval_RestoreThread () from /usr/local/lib/libpython3.12.so.0.0
#2  0x0000022739c93d66 in PyGILState_Ensure () from /usr/local/lib/libpython3.12.so.0.0
#3  0x000002253848e2ea in pybind11::gil_scoped_acquire::gil_scoped_acquire (this=)
    at /usr/local/lib/python3.12/site-packages/pybind11/include/pybind11/gil.h:195
#4  main (argc=, argv=) at /usr/ports/pobj/netgen-mesher-6.2.2406/netgen-6.2.2406/ng/ngappinit.cpp:259
(gdb) q

[MarkoRamius]

I noticed the same behaviour, i.e., seeing a segfault in the command line upon closing the GUI. However, this stopped when I finally got around to set the PYTHONPATH in my .bashrc file.

Maybe this is the reason. The fact that the commit you refer to deals with the python interpreter could be a possible explanation. If the PYTHONPATH is not set, then dealing with it causes the segfault.

Just my 2 cents ...

[thyssentishman]

I can confirm that #221 fixes this issue.