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GH-128682: Change a couple of functions to only steal references on success. (GH-129132)

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Change PyTuple_FromStackRefSteal and PyList_FromStackRefSteal to only steal on success to avoid escaping
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Mark Shannon 2025-01-22 10:51:37 +00:00 • committed by GitHub
parent a65f802692
commit 470a0a68eb
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11 changed files with 34 additions and 32 deletions
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7
Python/ceval.c
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@ -1527,7 +1527,12 @@ initialize_locals(PyThreadState *tstate, PyFunctionObject *func,
u = (PyObject *)&_Py_SINGLETON(tuple_empty);
}
else {
u = _PyTuple_FromStackRefSteal(args + n, argcount - n);
u = _PyTuple_FromStackRefStealOnSuccess(args + n, argcount - n);
if (u == NULL) {
for (Py_ssize_t i = n; i < argcount; i++) {
PyStackRef_CLOSE(args[i]);
}
}
}
if (u == NULL) {
goto fail_post_positional;