lidavidm commented on PR #36986:
URL: https://github.com/apache/arrow/pull/36986#issuecomment-1673323561
Alright:
- The weird `SystemError: <class 'SystemError'> returned a result with an
error set` is inscrutable to me. It occurs along with a `TypeError:
__traceback__ must be a traceback or None` message. `with_traceback` doesn't
appear to be able to clear the problematic traceback and I can't get gdb to
break on the source of the error properly.
- The segfault is also related to tracebacks, somehow; it reproduces with
PYTHONDEVMODE and gdb shows it happens somewhere in `tb_traverse`, where
`obj->ob_type` points to something that appears to have already been
deallocated:
```
#0 _PyObject_IS_GC (obj=0x7fff656ce7af) at
/usr/local/src/conda/python-3.11.3/Include/object.h:772
#1 visit_decref (op=0x7fff656ce7af, parent=parent@entry=0x7fff656ce710)
at /usr/local/src/conda/python-3.11.3/Modules/gcmodule.c:452
#2 0x000055555583df5b in tb_traverse (tb=0x7fff656ce710,
visit=0x555555723a20 <visit_decref>, arg=0x7fff656ce710)
at /usr/local/src/conda/python-3.11.3/Python/traceback.c:182
```
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