[issue30570] issubclass segfaults on objects with weird __getattr__

[miss-islington]

Change by miss-islington <mariatta.wijaya+miss-islington at gmail.com>:


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nosy: +miss-islington
nosy_count: 10.0 -> 11.0
pull_requests: +27448
pull_request: https://github.com/python/cpython/pull/29175

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue30570>
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