[New-bugs-announce] [issue19442] Python crashs when a warning is emitted during shutdown

[STINNER Victor]

New submission from STINNER Victor:

Because of a bug, warnings were not emitted during Python shutdown. I fixed the bug in issue #19424, and now Python crashs when a warning is emitted during shutdown.

See also issue #19421: "FileIO destructor imports indirectly the io module at exit".

The warnings module uses globals()['__name__'] to get the name of the current module. The bug was the during Python shutdown, the module is None and _PyUnicode_AsString(None) was raising an exception (in setup_context() of _warnings.c) and so the warning was not emitted. For example, FileIO destructor emits a warning when a unclosed file is destroyed. The destructor removes the exception raised the warning module.

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messages: 201695
nosy: haypo
priority: normal
severity: normal
status: open
title: Python crashs when a warning is emitted during shutdown
type: crash
versions: Python 3.4

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue19442>
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