[issue44720] Weakref proxy crashes on null tp_iternext slot.

[Dennis Sweeney]

Dennis Sweeney <sweeney.dennis650 at gmail.com> added the comment:

Here's a simpler reproducer:

        not_an_iterator = lambda: 0

        class A:
            def __iter__(self):
                return weakref.proxy(not_an_iterator)
        a = A()
        list(a)

I opened a PR.

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title: Finding string in iteratively deleted object cause segfault -> Weakref proxy crashes on null tp_iternext slot.

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue44720>
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