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GH-99257: Check the owner's type when specializing slots #99258

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Merged
markshannon merged 4 commits into from
Nov 10, 2022
Merged

GH-99257: Check the owner's type when specializing slots #99258

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e56520e
Add failing regression tests
brandtbucher Oct 21, 2022
1d390bb
Check types when specializing slots
brandtbucher Oct 21, 2022
19103f5
blurb add
brandtbucher Oct 21, 2022
b0e667d
fixup
brandtbucher Oct 21, 2022
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Check types when specializing slots
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@brandtbucher
brandtbucher committed Oct 21, 2022
commit 1d390bb6922fba690249ff74cba271e37a4ebbdf
8 changes: 8 additions & 0 deletions Python/specialize.c
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Original file line number Diff line number Diff line change
Expand Up @@ -787,6 +787,10 @@ _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;
Expand Down Expand Up @@ -895,6 +899,10 @@ _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;
Expand Down