[New-bugs-announce] [issue33712] OrderedDict can set an exception in tp_clear

[Serhiy Storchaka]

New submission from Serhiy Storchaka <storchaka+cpython at gmail.com>:

The tp_clear handler of OrderedDict can set an exception when fail to allocate a nodes cache for an empty dict. An exception in tp_clear is not expected and caused a crash in the garbage collector. In the master branch it will cause just writing a traceback to stderr (see issue33622), but in any case it would be better to handle the failure locally in OrderedDict. Perhaps the cache for an empty dict is not needed.

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components: Interpreter Core
messages: 318287
nosy: eric.snow, inada.naoki, serhiy.storchaka
priority: normal
severity: normal
status: open
title: OrderedDict can set an exception in tp_clear
type: crash
versions: Python 3.6, Python 3.7, Python 3.8

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue33712>
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