commit 3d07c1ee1d2d475b74816117981d6ec752c26c23
author Zackery Spytz <zspytz@gmail.com> Sat Mar 23 20:23:29 2019 -0600
committer Inada Naoki <songofacandy@gmail.com> Sun Mar 24 11:23:29 2019 +0900
tree ff27179fff70f36717b3da0cade794ca81f6cf54
parent a7987e71939fa631296f83861fb376361ddd59ee

bpo-36412: fix a possible crash in dictobject.c's new_dict() (GH-12519)

Objects/dictobject.c

diff --git a/Objects/dictobject.c b/Objects/dictobject.c
index 524ff67..e2603e1 100644
--- a/Objects/dictobject.c
+++ b/Objects/dictobject.c
@@ -604,7 +604,9 @@
         mp = PyObject_GC_New(PyDictObject, &PyDict_Type);
         if (mp == NULL) {
             dictkeys_decref(keys);
-            free_values(values);
+            if (values != empty_values) {
+                free_values(values);
+            }
             return NULL;
         }
     }