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Title: gh-120198: Stop the world when setting __class__ on free-threaded build by Fidget-Spinner · Pull Request #120672 · python/cpython · GitHub

Open Graph Title: gh-120198: Stop the world when setting __class__ on free-threaded build by Fidget-Spinner · Pull Request #120672 · python/cpython

X Title: gh-120198: Stop the world when setting __class__ on free-threaded build by Fidget-Spinner · Pull Request #120672 · python/cpython

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

Open Graph Description: Issue: Read and write of __class__ in two threads causes crash #120198

X Description: Issue: Read and write of __class__ in two threads causes crash #120198

Opengraph URL: https://github.com/python/cpython/pull/120672

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