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bpo-46417: Py_Finalize() clears static types (GH-30743)

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Add _PyTypes_FiniTypes() best-effort function to clear static types:
don't deallocate a type if it still has subclasses.

remove_subclass() now sets tp_subclasses to NULL when removing the
last subclass.
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Victor Stinner 2022-01-21 13:06:34 +01:00 • committed by GitHub
parent ea38e436fe
commit 595225e86d
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4 changed files with 144 additions and 85 deletions
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Include/internal/pycore_typeobject.h
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@ -13,6 +13,7 @@ extern "C" {
extern PyStatus _PyTypes_InitState(PyInterpreterState *);
extern PyStatus _PyTypes_InitTypes(PyInterpreterState *);
extern void _PyTypes_FiniTypes(PyInterpreterState *);
extern void _PyTypes_Fini(PyInterpreterState *);