[issue28503] [Patch] '_crypt' module: fix implicit declaration of crypt(), use crypt_r() where available

[Antoine Pitrou]

Antoine Pitrou <pitrou at free.fr> added the comment:

I'm not sure performance matters.  Modern crypt() algorithms should actually be slow enough (using a large number of rounds) to make brute-force attacks impractical...

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nosy: +pitrou
versions: +Python 3.7 -Python 3.6

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