OpenBSD 7.4-current port and test produces an Abort trap at callback_bad with 'callback_args string'

[Matti V. <mav...@gm...>]

I am attempting to build pycxx-7.1.8 for OpenBSD 7.4-current.

I am following the Unix installation guide at:

https://cxx.sourceforge.net/

The final line:

make -f linux.mak clean test

or

gmake -f linux.mak clean test

in OpenBSD

fails to

...
TEST: call C++ with Python callback_bad
callback_bad with 'callback_args string'
Abort trap (core dumped)
gmake: *** [linux.mak:86: test] Error 134

Upon inspecting test_simple.py I've noticed that it seems to be linked to
raising ValueError, because commenting out line 31:

raise ValueError( 'callback_bad error' )

in test_simple.py makes test_simple.py progress to the next test. Now I see:

...
TEST: call C++ with Python callback_bad
callback_bad with 'callback_args string'
FAILED callback_bad None
TEST: call C++ with Python callback_raise_simple_error
callback_bad with 'callback_args string'
Abort trap (core dumped)

However, since the Abort traps continue showing, I speculate that this is
about something more. Possible reasons:

* pycxx-7.1.8 is not compatible with Python 3.10 (or a particular
subversion)
* something is different in OpenBSD compared to Linux

Any ideas?