[issue39091] _PyErr_CreateException() must check that the result is an exception (CPython Segfault in 5 lines of code)

[Irit Katriel]

Change by Irit Katriel <iritkatriel at yahoo.com>:


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versions: +Python 3.10 -Python 3.7

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue39091>
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