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author	Miss Islington (bot) <31488909+miss-islington@users.noreply.github.com>
	Thu, 25 Dec 2025 11:41:10 +0000 (12:41 +0100)
committer	GitHub <noreply@github.com>
	Thu, 25 Dec 2025 11:41:10 +0000 (13:41 +0200)
commit	240ee207708e4103e4a9f459ff9bf285511e43cc
tree	eaab81ff8e4b9642a027e10ef7c43bffd3543125	tree \| snapshot
parent	bac24eed2a9c91b415954d1b0b2f88bc60b45964	commit \| diff

[3.14] gh-143004: Fix possible use-after-free in collections.Counter.update() (GH-143044) (GH-143166)

This happened when the Counter was mutated when incrementing
the value for an existing key.
(cherry picked from commit 86d904588e8c84c7fccb8faf84b343f03461970d)

Co-authored-by: kaushal trivedi <155625932+Kaushalt2004@users.noreply.github.com>

Lib/test/test_collections.py		diff \| blob \| blame \| history
Misc/NEWS.d/next/Library/2025-12-22-00-00-00.gh-issue-143004.uaf-counter.rst	[new file with mode: 0644]	blob
Modules/_collectionsmodule.c		diff \| blob \| blame \| history

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