diff -r 8181bd808dc5 -r 9d4a2942a732 mercurial/dirstate.py
--- a/mercurial/dirstate.py	Thu Mar 01 17:39:58 2012 +0200
+++ b/mercurial/dirstate.py	Thu Mar 01 17:39:58 2012 +0200
@@ -52,6 +52,7 @@
         self._dirtypl = False
         self._lastnormaltime = 0
         self._ui = ui
+        self._filecache = {}
 
     @propertycache
     def _map(self):