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gh-148398: add type watcher in _CHECK_ATTR_CLASS (GH-148399)

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Neko Asakura 2026-04-12 08:54:03 -04:00 • committed by GitHub
parent 3a7df632c9
commit 30c698a655
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1
Misc/NEWS.d/next/Core_and_Builtins/2026-04-11-15-12-53.gh-issue-148398.g62jCA.rst Normal file
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@ -0,0 +1 @@
Fix a bug in the JIT optimizer where class attribute loads were not invalidated after type mutation.

4
Python/optimizer_bytecodes.c
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@ -226,6 +226,10 @@ dummy_func(void) {
}
else {
sym_set_const(owner, type);
if ((((PyTypeObject *)type)->tp_flags & Py_TPFLAGS_IMMUTABLETYPE) == 0) {
PyType_Watch(TYPE_WATCHER_ID, type);
_Py_BloomFilter_Add(dependencies, type);
}
}
}
}

4
Python/optimizer_cases.c.h generated
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@ -2571,6 +2571,10 @@
}
else {
sym_set_const(owner, type);
if ((((PyTypeObject *)type)->tp_flags & Py_TPFLAGS_IMMUTABLETYPE) == 0) {
PyType_Watch(TYPE_WATCHER_ID, type);
_Py_BloomFilter_Add(dependencies, type);
}
}
}
break;