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bpo-45829: Check __getitem__'s version for overflow before specializing (GH-30129)

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* Check __getitem__'s version for overflow.

* Use SPEC_FAIL_OUT_OF_VERSIONS instead
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Brandt Bucher 2021-12-16 03:08:20 -08:00 • committed by GitHub
parent c5d18a5014
commit 62a8a0c522
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1 changed files with 1 additions and 1 deletions
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Python/specialize.c
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@ -1187,7 +1187,7 @@ _Py_Specialize_BinarySubscr(
assert(cls->tp_version_tag != 0);
cache0->version = cls->tp_version_tag;
int version = _PyFunction_GetVersionForCurrentState(func);
if (version == 0) {
if (version == 0 || version != (uint16_t)version) {
SPECIALIZATION_FAIL(BINARY_SUBSCR, SPEC_FAIL_OUT_OF_VERSIONS);
goto fail;
}