diff -r 19f5dec2d61f -r afd75476939e mercurial/cmdutil.py
--- a/mercurial/cmdutil.py	Tue Jul 17 00:55:22 2012 +0200
+++ b/mercurial/cmdutil.py	Fri Jul 06 13:56:40 2012 -0700
@@ -1473,7 +1473,7 @@
     cca = None
     abort, warn = scmutil.checkportabilityalert(ui)
     if abort or warn:
-        cca = scmutil.casecollisionauditor(ui, abort, wctx)
+        cca = scmutil.casecollisionauditor(ui, abort, repo.dirstate)
     for f in repo.walk(match):
         exact = match.exact(f)
         if exact or not explicitonly and f not in repo.dirstate: