commit 9892f52145a72729253c0e71790feef49d7892af
author Benjamin Peterson <benjamin@python.org> Wed Oct 31 14:22:12 2012 -0400
committer Benjamin Peterson <benjamin@python.org> Wed Oct 31 14:22:12 2012 -0400
tree 6a755db5537776ad20b066f2cc9c37a2ff637f11
parent 37d2c99b2207a53a9cba3ac58dc82dab2356f5cb

avoid a function call with redundant checks for dict size

Objects/dictobject.c

diff --git a/Objects/dictobject.c b/Objects/dictobject.c
index d3c5eac..c10bfcc 100644
--- a/Objects/dictobject.c
+++ b/Objects/dictobject.c
@@ -1335,7 +1335,7 @@
     if (d == NULL)
         return NULL;
 
-    if (PyDict_CheckExact(d) && PyDict_Size(d) == 0) {
+    if (PyDict_CheckExact(d) && ((PyDictObject *)d)->ma_used == 0) {
         if (PyDict_CheckExact(seq)) {
             PyDictObject *mp = (PyDictObject *)d;
             PyObject *oldvalue;