commit 000b9e803a7ec067da0a43f9a3fec16f1078215a
author Miss Islington (bot) <31488909+miss-islington@users.noreply.github.com> Sat Jul 03 13:51:10 2021 -0700
committer GitHub <noreply@github.com> Sat Jul 03 21:51:10 2021 +0100
tree 8080183ee2c759d0ef2c2ad3a199fa1c76d135a7
parent bea618d780a7b5ce16cd7223983238ee4eeb09c1

bpo-44553: Correct failure in tp_new for the union object (GH-27008) (GH-27009)

(cherry picked from commit bc3961485639cc73de7c4c7eed1b56f3c74939bf)

Co-authored-by: Pablo Galindo <Pablogsal@gmail.com>

Co-authored-by: Pablo Galindo <Pablogsal@gmail.com>

Objects/unionobject.c

diff --git a/Objects/unionobject.c b/Objects/unionobject.c
index cc7181d..8435763 100644
--- a/Objects/unionobject.c
+++ b/Objects/unionobject.c
@@ -490,10 +490,10 @@ _Py_Union(PyObject *args)
     }
 
     result->args = dedup_and_flatten_args(args);
+    _PyObject_GC_TRACK(result);
     if (result->args == NULL) {
-        PyObject_GC_Del(result);
+        Py_DECREF(result);
         return NULL;
     }
-    _PyObject_GC_TRACK(result);
     return (PyObject*)result;
 }