commit 97932e4c4f3eeab12889fe45c935e2e6b91ac390
author Serhiy Storchaka <storchaka@gmail.com> Mon Sep 26 23:01:23 2016 +0300
committer Serhiy Storchaka <storchaka@gmail.com> Mon Sep 26 23:01:23 2016 +0300
tree e6a0e3b07869fc3c991339452db2dff288c4ed99
parent 8d08265f5ee09835ba725d79b0bd4800b6c8db85

issue #28144: Decrease empty_keys_struct's dk_refcnt
since there is no dummy_struct any more.
Patch by Xiang Zhang.

Objects/dictobject.c

diff --git a/Objects/dictobject.c b/Objects/dictobject.c
index 36ea8f1..fe19445 100644
--- a/Objects/dictobject.c
+++ b/Objects/dictobject.c
@@ -419,7 +419,7 @@
  * (which cannot fail and thus can do no allocation).
  */
 static PyDictKeysObject empty_keys_struct = {
-        2, /* dk_refcnt 1 for this struct, 1 for dummy_struct */
+        1, /* dk_refcnt */
         1, /* dk_size */
         lookdict_split, /* dk_lookup */
         0, /* dk_usable (immutable) */