[issue34759] Possible regression in ssl module in 3.7.1 and master

[Nathaniel Smith]

Nathaniel Smith <njs at pobox.com> added the comment:

Git bisect says:


1229664f30dd5fd4da32174a19258f8312464d45 is the first bad commit
commit 1229664f30dd5fd4da32174a19258f8312464d45
Author: Miss Islington (bot) <31488909+miss-islington at users.noreply.github.com>
Date:   Mon Sep 17 12:12:13 2018 -0700

    bpo-32533: Fixed thread-safety of error handling in _ssl. (GH-7158)
    
    (cherry picked from commit c6fd1c1c3a65217958b68df3a4991e4f306e9b7d)
    
    Co-authored-by: Steve Dower <steve.dower at microsoft.com>


Now let's see if I can narrow down exactly what the behavioral change is, besides "this random test started failing"...

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nosy: +steve.dower

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<https://bugs.python.org/issue34759>
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