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[3.13] gh-125610: Fix STORE_ATTR_INSTANCE_VALUE specialization check (GH-125612) (GH-127698)

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The `STORE_ATTR_INSTANCE_VALUE` opcode doesn't support objects with
non-NULL managed dictionaries, so don't specialize to that op in that case.
(cherry picked from commit a353455fca)

Co-authored-by: Sam Gross <colesbury@gmail.com>
This commit is contained in:
Miss Islington (bot) 2024-12-06 17:14:26 +01:00 • committed by GitHub
parent 5d35d279a5
commit 8d50e0320b
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1 changed files with 4 additions and 1 deletions
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5
Python/specialize.c
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@ -841,7 +841,10 @@ specialize_dict_access(
return 0;
}
_PyAttrCache *cache = (_PyAttrCache *)(instr + 1);
if (type->tp_flags & Py_TPFLAGS_INLINE_VALUES && _PyObject_InlineValues(owner)->valid) {
if (type->tp_flags & Py_TPFLAGS_INLINE_VALUES &&
_PyObject_InlineValues(owner)->valid &&
!(base_op == STORE_ATTR && _PyObject_GetManagedDict(owner) != NULL))
{
PyDictKeysObject *keys = ((PyHeapTypeObject *)type)->ht_cached_keys;
assert(PyUnicode_CheckExact(name));
Py_ssize_t index = _PyDictKeys_StringLookup(keys, name);