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[3.13] gh-126108: Fix potential null pointer dereference in PySys_AddWarnOptionUnicode (GH-126118) (#129520)

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gh-126108: Fix potential null pointer dereference in `PySys_AddWarnOptionUnicode` (GH-126118)
(cherry picked from commit fad36bf382)

Co-authored-by: Valery Fedorenko <federicovalenso@gmail.com>
This commit is contained in:
Miss Islington (bot) 2025-01-31 16:02:44 +01:00 • committed by GitHub
parent 9a59a51733
commit 0468ea1230
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2 changed files with 5 additions and 3 deletions
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7
Python/sysmodule.c
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@ -2841,6 +2841,7 @@ PySys_ResetWarnOptions(void)
static int
_PySys_AddWarnOptionWithError(PyThreadState *tstate, PyObject *option)
{
assert(tstate != NULL);
PyObject *warnoptions = get_warnoptions(tstate);
if (warnoptions == NULL) {
return -1;
@ -2856,11 +2857,11 @@ PyAPI_FUNC(void)
PySys_AddWarnOptionUnicode(PyObject *option)
{
PyThreadState *tstate = _PyThreadState_GET();
_Py_EnsureTstateNotNULL(tstate);
assert(!_PyErr_Occurred(tstate));
if (_PySys_AddWarnOptionWithError(tstate, option) < 0) {
/* No return value, therefore clear error state if possible */
if (tstate) {
_PyErr_Clear(tstate);
}
_PyErr_Clear(tstate);
}
}