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Title: gh-157841: Synchronize functools.partial state access by mpage · Pull Request #160480 · python/cpython · GitHub

Open Graph Title: gh-157841: Synchronize functools.partial state access by mpage · Pull Request #160480 · python/cpython

X Title: gh-157841: Synchronize functools.partial state access by mpage · Pull Request #160480 · python/cpython

Description: The Python programming language. Contribute to python/cpython development by creating an account on GitHub.

Open Graph Description: Acquire coherent strong-reference snapshots under the partial object lock for calls, repr, reduce, and nested-partial construction. Publish replacement state atomically, release displaced reference...

X Description: Acquire coherent strong-reference snapshots under the partial object lock for calls, repr, reduce, and nested-partial construction. Publish replacement state atomically, release displaced reference...

Opengraph URL: https://github.com/python/cpython/pull/160480

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Oct 23, 2026https://github.com/python/cpython/pull/160480#issue-6004492288
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Free-threaded CPython 3.14: concurrent functools.partial.__setstate__ crashes with repr(), calls, or another __setstate__ #157841https://github.com/python/cpython/issues/157841
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