From a0904344771bd46505e940357e3f0a7ea4d59ae3 Mon Sep 17 00:00:00 2001
From: sobolevn <mail@sobolevn.me>
Date: Sun, 14 Jul 2024 14:20:40 +0300
Subject: [PATCH] gh-121660: Fix `ga_getitem` by explicitly checking for `NULL`
 result (GH-121661) (cherry picked from commit
 bb802db8cfa35a88582be32fae05fe1cf8f237b1)

Co-authored-by: sobolevn <mail@sobolevn.me>
---
 Objects/genericaliasobject.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/Objects/genericaliasobject.c b/Objects/genericaliasobject.c
index 2779baf0bd1c61..3c64e75fca8a2e 100644
--- a/Objects/genericaliasobject.c
+++ b/Objects/genericaliasobject.c
@@ -561,6 +561,10 @@ 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);