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Title: [3.15] gh-150858: fix data race while changing `__qualname__` of a type object(GH-150859) by miss-islington · Pull Request #153747 · python/cpython · GitHub

Open Graph Title: [3.15] gh-150858: fix data race while changing `__qualname__` of a type object(GH-150859) by miss-islington · Pull Request #153747 · python/cpython

X Title: [3.15] gh-150858: fix data race while changing `__qualname__` of a type object(GH-150859) by miss-islington · Pull Request #153747 · python/cpython

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Open Graph Description: (cherry picked from commit 1ec6596) Co-authored-by: Thomas Kowalski thom.kowa@gmail.com Issue: Race in type_set_qualname leads to memory corruption under free-threading #150858

X Description: (cherry picked from commit 1ec6596) Co-authored-by: Thomas Kowalski thom.kowa@gmail.com Issue: Race in type_set_qualname leads to memory corruption under free-threading #150858

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Opengraph URL: https://github.com/python/cpython/pull/153747

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