[issue10311] Signal handlers must preserve errno

[Amaury Forgeot d'Arc]

Amaury Forgeot d'Arc <amauryfa at gmail.com> added the comment:

This issue is not really relevant on Windows:
- signals are actually run in a new thread specially created.
- errno is a thread-local variable; its value is thus local to the signal handler, same for WSAGetLastError().

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nosy: +amaury.forgeotdarc

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue10311>
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