[3.7] bpo-28503: Use crypt_r() when available instead of crypt() (GH-11373) #11376
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Use crypt_r() when available instead of crypt() in the crypt module.
As a nice side effect: This also avoids a memory sanitizer flake as clang msan doesn't know about crypt's internal libc allocated buffer.
(cherry picked from commit 387512c)
Co-authored-by: Gregory P. Smith greg@krypto.org
https://bugs.python.org/issue28503