Bug report

Bug description:

Pointertstate is compared to a NULL valuehere, but above there is adereference. Stack trace:_PySys_AddWarnOptionWithError ->get_warnoptions ->_PySys_GetAttr. Correct code should look like this:

voidPySys_AddWarnOptionUnicode(PyObject*option){PyThreadState*tstate=_PyThreadState_GET();if (tstate&&_PySys_AddWarnOptionWithError(tstate,option)<0) {/* No return value, therefore clear error state if possible */_PyErr_Clear(tstate);    }}

CPython versions tested on:

3.11

Operating systems tested on:

No response

Linked PRs

• gh-126108: Fix potential null pointer dereference in PySys_AddWarnOptionUnicode #126118
• [3.13] gh-126108: Fix potential null pointer dereference inPySys_AddWarnOptionUnicode (GH-126118) #129520
• [3.12] gh-126108: Fix potential null pointer dereference inPySys_AddWarnOptionUnicode (GH-126118) #129522