From: Raymond Hettinger <python@rcn.com>
Date: Fri, 7 Aug 2015 05:15:22 +0000 (-0700)
Subject: Restore frozenset hash caching removed in cf707dd190a9
X-Git-Tag: v3.6.0a1~1819
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=b501a27ad8ec4b531a9c1057952d8f7c6ef8cb77;p=python

Restore frozenset hash caching removed in cf707dd190a9
---

diff --git a/Objects/setobject.c b/Objects/setobject.c
index 24424ad8b9..0a065cc27d 100644
--- a/Objects/setobject.c
+++ b/Objects/setobject.c
@@ -763,6 +763,9 @@ frozenset_hash(PyObject *self)
     Py_uhash_t hash = 1927868237UL;
     setentry *entry;
 
+    if (so->hash != -1)
+        return so->hash;
+
     /* Initial dispersion based on the number of active entries */
     hash *= (Py_uhash_t)PySet_GET_SIZE(self) + 1;