diff -r d34969a4b1a8 -r 0fc52b01fb9e mercurial/revset.py
--- a/mercurial/revset.py	Fri Oct 03 12:46:34 2014 -0500
+++ b/mercurial/revset.py	Fri Oct 03 12:52:17 2014 -0500
@@ -70,7 +70,7 @@
                         yield i
                         break
 
-    return _ascgeneratorset(iterate())
+    return _generatorset(iterate(), iterasc=True)
 
 def _revsbetween(repo, roots, heads):
     """Return all paths between roots and heads, inclusive of both endpoint