commit c81609e44eed641d3b8a137daa31ef35501c1f85
author Hai Shi <shihai1992@gmail.com> Mon Mar 16 03:37:49 2020 +0800
committer GitHub <noreply@github.com> Sun Mar 15 19:37:49 2020 +0000
tree 5c8b67295025809c3e64e03a01fb3441d7296902
parent 8689209e0338943dba9b7ff5566b8a420374764c

Fix a possible refleak in tupleobject.c (GH-19018)

Objects/tupleobject.c

diff --git a/Objects/tupleobject.c b/Objects/tupleobject.c
index 14ab53f..839667a 100644
--- a/Objects/tupleobject.c
+++ b/Objects/tupleobject.c
@@ -737,8 +737,10 @@
         return NULL;
     assert(PyTuple_Check(tmp));
     newobj = type->tp_alloc(type, n = PyTuple_GET_SIZE(tmp));
-    if (newobj == NULL)
+    if (newobj == NULL) {
+        Py_DECREF(tmp);
         return NULL;
+    }
     for (i = 0; i < n; i++) {
         item = PyTuple_GET_ITEM(tmp, i);
         Py_INCREF(item);