8000 [3.14] gh-132775: Fix _PyFunctIon_VerifyStateless() (GH-134900) by miss-islington · Pull Request #134901 · python/cpython · GitHub
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[3.14] gh-132775: Fix _PyFunctIon_VerifyStateless() (GH-134900) #134901

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Merged
merged 1 commit into from
May 29, 2025
Merged

[3.14] gh-132775: Fix _PyFunctIon_VerifyStateless() (GH-134900) #134901

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34 changes: 20 additions & 14 deletions Objects/funcobject.c
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Original file line number Diff line number Diff line change
Expand Up @@ -1264,26 +1264,32 @@ _PyFunction_VerifyStateless(PyThreadState *tstate, PyObject *func)
}
// Disallow __defaults__.
PyObject *defaults = PyFunction_GET_DEFAULTS(func);
if (defaults != NULL && defaults != Py_None && PyDict_Size(defaults) > 0)
{
_PyErr_SetString(tstate, PyExc_ValueError, "defaults not supported");
return -1;
if (defaults != NULL) {
assert(PyTuple_Check(defaults)); // per PyFunction_New()
if (PyTuple_GET_SIZE(defaults) > 0) {
_PyErr_SetString(tstate, PyExc_ValueError,
"defaults not supported");
return -1;
}
}
// Disallow __kwdefaults__.
PyObject *kwdefaults = PyFunction_GET_KW_DEFAULTS(func);
if (kwdefaults != NULL && kwdefaults != Py_None
&& PyDict_Size(kwdefaults) > 0)
{
_PyErr_SetString(tstate, PyExc_ValueError,
"keyword defaults not supported");
return -1;
if (kwdefaults != NULL) {
assert(PyDict_Check(kwdefaults)); // per PyFunction_New()
if (PyDict_Size(kwdefaults) > 0) {
_PyErr_SetString(tstate, PyExc_ValueError,
"keyword defaults not supported");
return -1;
}
}
// Disallow __closure__.
PyObject *closure = PyFunction_GET_CLOSURE(func);
if (closure != NULL && closure != Py_None && PyTuple_GET_SIZE(closure) > 0)
{
_PyErr_SetString(tstate, PyExc_ValueError, "closures not supported");
return -1;
if (closure != NULL) {
assert(PyTuple_Check(closure)); // per PyFunction_New()
if (PyTuple_GET_SIZE(closure) > 0) {
_PyErr_SetString(tstate, PyExc_ValueError, "closures not supported");
return -1;
}
}
// Check the code.
PyCodeObject *co = (PyCodeObject *)PyFunction_GET_CODE(func);
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