[issue32999] issubclass(obj, abc.ABC) causes a segfault

[INADA Naoki]

Change by INADA Naoki <songofacandy at gmail.com>:


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keywords: +patch
pull_requests: +5767
stage:  -> patch review

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue32999>
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