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[3.11] GH-99257: Check the owner's type when specializing slots (GH-99324)

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(cherry picked from commit 9d69284169)

Co-authored-by: Brandt Bucher <brandtbucher@microsoft.com>
This commit is contained in:
Miss Islington (bot) 2022-11-10 08:44:49 -08:00 • committed by GitHub
parent 1de088ca95
commit f9a68be673
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3 changed files with 78 additions and 0 deletions
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8
Python/specialize.c
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@ -688,6 +688,10 @@ _Py_Specialize_LoadAttr(PyObject *owner, _Py_CODEUNIT *instr, PyObject *name)
PyMemberDescrObject *member = (PyMemberDescrObject *)descr;
struct PyMemberDef *dmem = member->d_member;
Py_ssize_t offset = dmem->offset;
if (!PyObject_TypeCheck(owner, member->d_common.d_type)) {
SPECIALIZATION_FAIL(LOAD_ATTR, SPEC_FAIL_EXPECTED_ERROR);
goto fail;
}
if (dmem->flags & PY_AUDIT_READ) {
SPECIALIZATION_FAIL(LOAD_ATTR, SPEC_FAIL_ATTR_AUDITED_SLOT);
goto fail;
@ -777,6 +781,10 @@ _Py_Specialize_StoreAttr(PyObject *owner, _Py_CODEUNIT *instr, PyObject *name)
PyMemberDescrObject *member = (PyMemberDescrObject *)descr;
struct PyMemberDef *dmem = member->d_member;
Py_ssize_t offset = dmem->offset;
if (!PyObject_TypeCheck(owner, member->d_common.d_type)) {
SPECIALIZATION_FAIL(STORE_ATTR, SPEC_FAIL_EXPECTED_ERROR);
goto fail;
}
if (dmem->flags & READONLY) {
SPECIALIZATION_FAIL(STORE_ATTR, SPEC_FAIL_ATTR_READ_ONLY);
goto fail;