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Title: gh-151593: Fix dead lock in PyDict insert_split_key() by vstinner · Pull Request #152200 · python/cpython · GitHub

Open Graph Title: gh-151593: Fix dead lock in PyDict insert_split_key() by vstinner · Pull Request #152200 · python/cpython

X Title: gh-151593: Fix dead lock in PyDict insert_split_key() by vstinner · Pull Request #152200 · python/cpython

Description: Do not hold LOCK_KEYS() lock when calling PyType_Modified() to avoid a deadlock. Issue: gh-151593

Open Graph Description: Do not hold LOCK_KEYS() lock when calling PyType_Modified() to avoid a deadlock. Issue: gh-151593

X Description: Do not hold LOCK_KEYS() lock when calling PyType_Modified() to avoid a deadlock. Issue: gh-151593

Opengraph URL: https://github.com/python/cpython/pull/152200

X: @github

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Domain: github.com

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bbc0359 gh-151593: Fix dead lock in PyDict insert_split_key() vstinner Jun 25, 2026 https://github.com/python/cpython/pull/152200/commits/bbc03598f7f43e1cca8b4c68e7e2f861e93bbeb8
d1a2441 Add a comment on LOCK_KEYS() explaining _Py_LOCK_DONT_DETACH vstinner Jun 25, 2026 https://github.com/python/cpython/pull/152200/commits/d1a244142a10eb6233d93b07c6e1c9cc6ac4278b
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