[issue32571] Speed up and clean up getting optional attributes in C code

[INADA Naoki]

INADA Naoki <songofacandy at gmail.com> added the comment:


New changeset e76daebc0c8afa3981a4c5a8b54537f756e805de by INADA Naoki in branch 'master':
bpo-32571: Fix reading uninitialized memory (GH-5332)
https://github.com/python/cpython/commit/e76daebc0c8afa3981a4c5a8b54537f756e805de


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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue32571>
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