From b511efcddb42476ab2d4d56c403d8a09f3af3786 Mon Sep 17 00:00:00 2001
From: sobolevn <mail@sobolevn.me>
Date: Sat, 13 Jul 2024 11:20:28 +0300
Subject: [PATCH] gh-121660: Fix `ga_getitem` by explicitly checking for `NULL`
 result

---
 Objects/genericaliasobject.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/Objects/genericaliasobject.c b/Objects/genericaliasobject.c
index f5fefd656539c8..96c96491501a2c 100644
--- a/Objects/genericaliasobject.c
+++ b/Objects/genericaliasobject.c
@@ -563,6 +563,10 @@ ga_getitem(PyObject *self, PyObject *item)
     }
 
     PyObject *res = Py_GenericAlias(alias->origin, newargs);
+    if (res == NULL) {
+        Py_DECREF(newargs);
+        return NULL;
+    }
     ((gaobject *)res)->starred = alias->starred;
 
     Py_DECREF(newargs);