[3.11] gh-101967: add a missing error check (GH-101968) (#102015)

gh-101967: add a missing error check (GH-101968) (cherry picked from commit 89413bb) Co-authored-by: Eclips4 <[email protected]> Co-authored-by: Shantanu <[email protected]>
python · Feb 21, 2023 · 1633aea · 1633aea
1 parent 78eee76
commit 1633aea
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diff --git a/Misc/NEWS.d/next/Core and Builtins/2023-02-16-23-19-01.gh-issue-101967.Kqr1dz.rst b/Misc/NEWS.d/next/Core and Builtins/2023-02-16-23-19-01.gh-issue-101967.Kqr1dz.rst
@@ -0,0 +1 @@
+Fix possible segfault in ``positional_only_passed_as_keyword`` function, when new list created.
diff --git a/Python/ceval.c b/Python/ceval.c
@@ -6006,7 +6006,9 @@ positional_only_passed_as_keyword(PyThreadState *tstate, PyCodeObject *co,
 {
     int posonly_conflicts = 0;
     PyObject* posonly_names = PyList_New(0);
-
+    if (posonly_names == NULL) {
+        goto fail;
+    }
     for(int k=0; k < co->co_posonlyargcount; k++){
         PyObject* posonly_name = PyTuple_GET_ITEM(co->co_localsplusnames, k);