8000 gh-135552: Clear weakrefs to types in GC after garbage finalization not before by sergey-miryanov · Pull Request #135728 · python/cpython · GitHub
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gh-135552: Clear weakrefs to types in GC after garbage finalization not before #135728

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gh-135552: Clear weakrefs to types in GC after garbage finalization not before #135728

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f14f0ba
Reset type cache after finalization
sergey-miryanov Jun 19, 2025
61fc657
Add tests
fxeqxmulfx Jun 22, 2025
d8124a9
Organize tests
sergey-miryanov Jun 22, 2025
bb21510
Remove wrong solution
sergey-miryanov Jun 22, 2025
0e649ab
Do not clear weakrefs to types before finalization of instances
sergey-miryanov Jun 22, 2025
ff79617
Merge branch 'main' into gh-135552-fix-gc-segfault
sergey-miryanov Jun 22, 2025
ac394bc
Add news
sergey-miryanov Jun 22, 2025
3b18738
Update Misc/NEWS.d/next/Core_and_Builtins/2025-06-23-01-07-09.gh-issu…
sergey-miryanov Jun 23, 2025
de8841c
Update Misc/NEWS.d/next/Core_and_Builtins/2025-06-23-01-07-09.gh-issu…
sergey-miryanov Jun 23, 2025
f8745e0
Split unreachable to types and objects while deduce
sergey-miryanov Jun 23, 2025
f166933
Merge branch 'gh-135552-fix-gc-segfault' of github.com:sergey-miryano…
sergey-miryanov Jun 23, 2025
3fe0f15
Simplify tests
sergey-miryanov Jun 24, 2025
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Update Misc/NEWS.d/next/Core_and_Builtins/2025-06-23-01-07-09.gh-issu… 
…e-135552.eG9vzP.rst

Co-authored-by: Mikhail Efimov <efimov.mikhail@gmail.com>
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@sergey-miryanov @efimov-mikhail
sergey-miryanov and efimov-mikhail authored Jun 23, 2025
commit de8841c95cfe80c172bd93fc362f30c56f17477b
2 changes: 1 addition & 1 deletion Misc/NEWS.d/next/Core_and_Builtins/2025-06-23-01-07-09.gh-issue-135552.eG9vzP.rst
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Split the handling of weak references in the GC if both types and instances
within a generation are unreachable. This prevent the clearing of the
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Suggested change
within a generation are unreachable. This prevent the clearing of the
within a generation are unreachable. This prevent the clearing of the

type's subclasses list too early. This fix a segfault that occurs when
type's subclasses list too early. This fix a crash that occurs when
:meth:`~object.__del__` modifies the base's attributes and tries to access them from self.
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