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bpo-46417: Clear Unicode static types at exit (GH-30806)

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Add _PyUnicode_FiniTypes() function, called by
finalize_interp_types(). It clears these static types:

* EncodingMapType
* PyFieldNameIter_Type
* PyFormatterIter_Type

_PyStaticType_Dealloc() now does nothing if tp_subclasses
is not NULL.
This commit is contained in:
Victor Stinner 2022-01-22 22:55:39 +01:00 • committed by GitHub
parent 621a45ccac
commit 1626bf4ac7
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6 changed files with 25 additions and 22 deletions
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6
Objects/typeobject.c
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@ -4079,10 +4079,12 @@ type_dealloc_common(PyTypeObject *type)
void
_PyStaticType_Dealloc(PyTypeObject *type)
{
// _PyStaticType_Dealloc() must not be called if a type has subtypes.
// If a type still has subtypes, it cannot be deallocated.
// A subtype can inherit attributes and methods of its parent type,
// and a type must no longer be used once it's deallocated.
assert(type->tp_subclasses == NULL);
if (type->tp_subclasses != NULL) {
return;
}
type_dealloc_common(type);