From 89413bbccb9261b72190e275eefe4b0d49671477 Mon Sep 17 00:00:00 2001
From: Eclips4 <80244920+Eclips4@users.noreply.github.com>
Date: Sat, 18 Feb 2023 03:52:23 +0300
Subject: gh-101967: add a missing error check (#101968)

---
 .../Core and Builtins/2023-02-16-23-19-01.gh-issue-101967.Kqr1dz.rst  | 1 +
 Python/ceval.c                                                        | 4 +++-
 2 files changed, 4 insertions(+), 1 deletion(-)
 create mode 100644 Misc/NEWS.d/next/Core and Builtins/2023-02-16-23-19-01.gh-issue-101967.Kqr1dz.rst

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
new file mode 100644
index 0000000..6e681f9
--- /dev/null
+++ 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
index 09fd2f2..308ef52 100644
--- a/Python/ceval.c
+++ b/Python/ceval.c
@@ -1255,7 +1255,9 @@ 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);
 
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