commit 1a9ee946b0bd9eb93e48833e0f4de6b338867673
author Serhiy Storchaka <storchaka@gmail.com> Sun Jun 05 11:06:42 2016 +0300
committer Serhiy Storchaka <storchaka@gmail.com> Sun Jun 05 11:06:42 2016 +0300
tree b3a97a82990344b80f43c4506202f1b7359135e3
parent fcbb2c48cf8a6de5e2a0347f25e5b44211a041bd

Issue #27225: Fixed a reference leak in type_new when setting __new__ fails.
Original patch by Xiang Zhang.

Objects/typeobject.c

diff --git a/Objects/typeobject.c b/Objects/typeobject.c
index d78f298..cae5118 100644
--- a/Objects/typeobject.c
+++ b/Objects/typeobject.c
@@ -2430,7 +2430,11 @@
             Py_DECREF(type);
             return NULL;
         }
-        PyDict_SetItemString(dict, "__new__", tmp);
+        if (PyDict_SetItemString(dict, "__new__", tmp) < 0) {
+            Py_DECREF(tmp);
+            Py_DECREF(type);
+            return NULL;
+        }
         Py_DECREF(tmp);
     }