[issue21983] segfault in ctypes.cast

[Steve Dower]

Change by Steve Dower <steve.dower at python.org>:


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assignee:  -> steve.dower
stage: patch review -> backport needed
versions: +Python 3.8 -Python 3.4

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue21983>
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