[issue42057] pytest case which catch exceptions become segfault

[Hiroshi Miura]

Hiroshi Miura <miurahr at linux.com> added the comment:

A test code does not always reproduce the issue. Please try it in several times.

It seems to be happened when multiple threads try execute a same function which produces an exception, and both callers try to catch the exception at the same time.

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue42057>
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