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GH-94822: Don't specialize when metaclasses are involved (GH-94892)

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Brandt Bucher 2022-07-18 10:10:22 -07:00 • committed by GitHub
parent c41d4d0917
commit daf68ba92f
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3 changed files with 351 additions and 6 deletions
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11
Python/specialize.c
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@ -945,6 +945,10 @@ specialize_class_load_attr(PyObject *owner, _Py_CODEUNIT *instr,
PyObject *name)
{
_PyLoadMethodCache *cache = (_PyLoadMethodCache *)(instr + 1);
if (!PyType_CheckExact(owner) || _PyType_Lookup(Py_TYPE(owner), name)) {
SPECIALIZATION_FAIL(LOAD_ATTR, SPEC_FAIL_ATTR_METACLASS_ATTRIBUTE);
return -1;
}
PyObject *descr = NULL;
DescriptorClassification kind = 0;
kind = analyze_descriptor((PyTypeObject *)owner, name, &descr, 0);
@ -957,12 +961,7 @@ specialize_class_load_attr(PyObject *owner, _Py_CODEUNIT *instr,
return 0;
#ifdef Py_STATS
case ABSENT:
if (_PyType_Lookup(Py_TYPE(owner), name) != NULL) {
SPECIALIZATION_FAIL(LOAD_ATTR, SPEC_FAIL_ATTR_METACLASS_ATTRIBUTE);
}
else {
SPECIALIZATION_FAIL(LOAD_ATTR, SPEC_FAIL_EXPECTED_ERROR);
}
SPECIALIZATION_FAIL(LOAD_ATTR, SPEC_FAIL_EXPECTED_ERROR);
return -1;
#endif
default: