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[3.13] gh-140471: Fix buffer overflow in AST node initialization with malformed _fields (GH-140506) (#140510)

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(cherry picked from commit 95953b692d)
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Stan Ulbrych 2025-10-24 00:38:02 +01:00 • committed by GitHub
parent adf0c11a26
commit 1cc2c954d6
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4 changed files with 15 additions and 4 deletions
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Python/Python-ast.c generated
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@ -5203,7 +5203,7 @@ ast_type_init(PyObject *self, PyObject *args, PyObject *kw)
else {
if (PyErr_WarnFormat(
PyExc_DeprecationWarning, 1,
"Field '%U' is missing from %.400s._field_types. "
"Field %R is missing from %.400s._field_types. "
"This will become an error in Python 3.15.",
name, Py_TYPE(self)->tp_name
) < 0) {
@ -5238,7 +5238,7 @@ ast_type_init(PyObject *self, PyObject *args, PyObject *kw)
// simple field (e.g., identifier)
if (PyErr_WarnFormat(
PyExc_DeprecationWarning, 1,
"%.400s.__init__ missing 1 required positional argument: '%U'. "
"%.400s.__init__ missing 1 required positional argument: %R. "
"This will become an error in Python 3.15.",
Py_TYPE(self)->tp_name, name
) < 0) {