[issue42972] [C API] Heap types (PyType_FromSpec) must fully implement the GC protocol

[STINNER Victor]

STINNER Victor <vstinner at python.org> added the comment:

So it seems like the weakref list (__weaklistoffset__) doesn't have to be handled by visit, clear or free functions, it only has to be deallocated with PyObject_ClearWeakRefs() in the dealloc function.

I noticed that when reviewing partial_clear(partialobject *pto) in PR 26363.

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