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Title: gh-135552: Make the GC clear weakrefs later by nascheme · Pull Request #136189 · python/cpython · GitHub

Open Graph Title: gh-135552: Make the GC clear weakrefs later by nascheme · Pull Request #136189 · python/cpython

X Title: gh-135552: Make the GC clear weakrefs later by nascheme · Pull Request #136189 · python/cpython

Description: Fix two bugs related to the interaction of weakrefs and the garbage collector. The weakrefs in the tp_subclasses dictionary are needed in order to correctly invalidate type caches (for example, by ...

Open Graph Description: Fix two bugs related to the interaction of weakrefs and the garbage collector. The weakrefs in the tp_subclasses dictionary are needed in order to correctly invalidate type caches (for example, by ...

X Description: Fix two bugs related to the interaction of weakrefs and the garbage collector. The weakrefs in the tp_subclasses dictionary are needed in order to correctly invalidate type caches (for example, by ...

Opengraph URL: https://github.com/python/cpython/pull/136189

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Segmentation fault, possibly due to a GC issue (tp_subclasses) #135552https://github.com/python/cpython/issues/135552
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Add additional tests for weakref clearing.https://github.com/python/cpython/pull/136189/commits/073409b66d91e89f1cbeb945cbe7d5f199c34c38
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Revert unneeded changes to unit tests.https://github.com/python/cpython/pull/136189/commits/135223e6c76d5c3e41165de4691cbc5f5fb5834f
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Use assertIsNone() and assertIsNotNone().https://github.com/python/cpython/pull/136189/commits/fe9e58a0aff6c80de606c5e9349d488b3b194e96
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