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

[Barry S. <ba...@ba...>]

On 29/11/2023 13:02, Matti Viljamaa wrote:
> On a closer inspection it seems related to the line:
>
> simple.func_with_callback( callback_bad, 'fred' )
>
> because replacing that with a direct call:
>
> call_back('fred')
>
> works as expected:
>
> ...
> TEST: call C++ with Python callback_good
> callback_good with 'callback_args string'
> PASS callback_good returned 'good result'
> TEST: call C++ with Python callback_bad
> callback_bad with 'fred'
> PASS callback_bad: error callback_bad error
> TEST: call C++ with Python callback_raise_simple_error
> callback_bad with 'callback_args string'
> Abort trap (core dumped)
>
> Is there some problem with raising exceptions with the 
> simple.func_with_callback?
>
> However, I also think there might be a problem with:
>
> TEST: call C++ with Python callback_good
> callback_good with 'callback_args string'
> PASS callback_good returned 'good result'
>
> because I think it shouldn't show 'callback_args string'
>
> On Wed, Nov 29, 2023 at 1:15 PM Matti Viljamaa 
> <mav...@gm...> wrote:
>
>     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?
>
This is how to run the failing test on its own to debug it:
:  11:44:26   worthy  ~/Projects/pycxx-trunk
: [1] barry $ PYTHONPATH=obj gdb python3.10
GNU gdb (Fedora Linux) 13.2-11.fc39
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<http://gnu.org/licenses/gpl.html>
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Type "show copying" and "show warranty" for details.
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For help, type "help".
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Reading symbols from python3.10...
Reading symbols from 
/home/barry/.cache/debuginfod_client/5ba318aef33a2277a4c3e2fef48addf050553288/debuginfo... 

(gdb) import simple
Undefined command: "import".  Try "help".
(gdb) run
Starting program: /usr/bin/python3.10
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib64/libthread_db.so.1".
Python 3.10.13 (main, Aug 28 2023, 00:00:00) [GCC 13.2.1 20230728 (Red 
Hat 13.2.1-1)] on linux
Type "help", "copyright", "credits" or "license" for more information.
 >>> import simple
sizeof(int) 4
sizeof(long) 8
sizeof(Py_hash_t) 8
sizeof(Py_ssize_t) 8
 >>> def callback_bad( arg ):
...     raise ValueError( 'callback_bad error' )
...
 >>> simple.func_with_callback( callback_bad, 'fred' )
Traceback (most recent call last):
   File "<stdin>", line 1, in <module>
   File "<stdin>", line 2, in callback_bad
ValueError: callback_bad error
 >>>

>
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