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Crash on _PyDict_CheckConsistency with an empty instance dict #121860
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Bug also seen in the Cython test suite: #121253 |
This also happens when I did compile |
See also #121863 "CMultiplyNested closure crash: Python 3.13 regression". I don't know if it's related or not, but it was also found with the Cython test suite. |
Repro: class Foo:
pass
class StrSubclass(str):
pass
foo = Foo()
foo.attr = 2
foo.__dict__ = {}
del foo.__dict__
getattr(foo, StrSubclass("attr"))
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I can reliably reproduce the error on Linux by running the Cython test
|
The object's inline values may be marked invalid if the materialized dict was already initialized and then deleted.
Bisected to:
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@colesbury I can confirm it works: Before
After
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The object's inline values may be marked invalid if the materialized dict was already initialized and then deleted.
I think this is fixed now |
When running a complicated application that involves Cython I am getting the following crash:
I am trying to get a smaller reproducer that doesn't involve the entire world out of the application, but it may take me a while.
Linked PRs
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