[issue39672] SIGSEGV crash on shutdown with shelve & c pickle

[Andrei Daraschenka]

Change by Andrei Daraschenka <dorosch.github.io at yandex.ru>:


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pull_requests: +18016
stage:  -> patch review
pull_request: https://github.com/python/cpython/pull/18655

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue39672>
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