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Title: gh-150858: add stop-the-world in `type_set_qualname` by KowalskiThomas · Pull Request #150859 · python/cpython · GitHub

Open Graph Title: gh-150858: add stop-the-world in `type_set_qualname` by KowalskiThomas · Pull Request #150859 · python/cpython

X Title: gh-150858: add stop-the-world in `type_set_qualname` by KowalskiThomas · Pull Request #150859 · python/cpython

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

Open Graph Description: Fixes #150858. Issue: Race in type_set_qualname leads to memory corruption under free-threading #150858

X Description: Fixes #150858. Issue: Race in type_set_qualname leads to memory corruption under free-threading #150858

Opengraph URL: https://github.com/python/cpython/pull/150859

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