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Title: dict insert_split_key() change introduces data-race · Issue #152238 · python/cpython · GitHub

Open Graph Title: dict insert_split_key() change introduces data-race · Issue #152238 · python/cpython

X Title: dict insert_split_key() change introduces data-race · Issue #152238 · python/cpython

Description: Bug report Bug description: GH-152200 fixes a deadlock but it introduces a data-race, resulting in a correctness bug. Demo of bug is linked to other issue. Suggested fix is to revert the original optimization (GH-150490) and also the fix...

Open Graph Description: Bug report Bug description: GH-152200 fixes a deadlock but it introduces a data-race, resulting in a correctness bug. Demo of bug is linked to other issue. Suggested fix is to revert the original o...

X Description: Bug report Bug description: GH-152200 fixes a deadlock but it introduces a data-race, resulting in a correctness bug. Demo of bug is linked to other issue. Suggested fix is to revert the original o...

Opengraph URL: https://github.com/python/cpython/issues/152238

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dict insert_split_key() change introduces data-racehttps://github.com/python/cpython/issues/152238#top
interpreter-core(Objects, Python, Grammar, and Parser dirs)https://github.com/python/cpython/issues?q=state%3Aopen%20label%3A%22interpreter-core%22
topic-free-threadinghttps://github.com/python/cpython/issues?q=state%3Aopen%20label%3A%22topic-free-threading%22
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on Jun 25, 2026https://github.com/python/cpython/issues/152238#issue-4747687867
GH-152200https://github.com/python/cpython/pull/152200
Demo of bughttps://github.com/python/cpython/issues/151593#issuecomment-4802991249
GH-150490https://github.com/python/cpython/issues/150490
gh-152238: Revert gh-150490 and gh-152200. #152232https://github.com/python/cpython/pull/152232
interpreter-core(Objects, Python, Grammar, and Parser dirs)https://github.com/python/cpython/issues?q=state%3Aopen%20label%3A%22interpreter-core%22
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