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

[Serhiy Storchaka]

Serhiy Storchaka <storchaka+cpython at gmail.com> added the comment:

Is there any sense in accepting non-types as the first argument of issubclass()? I would add a check just in issubclass().

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nosy: +inada.naoki, serhiy.storchaka
versions: +Python 3.7

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<https://bugs.python.org/issue32999>
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