1 files changed, 7 insertions, 3 deletions
diff --git a/Parser/asdl_c.py b/Parser/asdl_c.py
index 25682229cc..e61aae24d1 100755
--- a/Parser/asdl_c.py
+++ b/Parser/asdl_c.py
@@ -834,9 +834,13 @@ static int obj2ast_object(PyObject* obj, PyObject** out, PyArena* arena)
 {
     if (obj == Py_None)
         obj = NULL;
-    if (obj)
-        PyArena_AddPyObject(arena, obj);
-    Py_XINCREF(obj);
+    if (obj) {
+        if (PyArena_AddPyObject(arena, obj) < 0) {
+            *out = NULL;
+            return -1;
+        }
+        Py_INCREF(obj);
+    }
     *out = obj;
     return 0;
 }