--- a/hgext/largefiles/lfutil.py	Fri Jan 11 16:30:29 2013 +0100
+++ b/hgext/largefiles/lfutil.py	Fri Jan 11 16:30:29 2013 +0100
@@ -142,8 +142,11 @@
     s = lfdirstate.status(match, [], False, False, False)
     unsure, modified, added, removed, missing, unknown, ignored, clean = s
     for lfile in unsure:
-        if repo[rev][standin(lfile)].data().strip() != \
-                hashfile(repo.wjoin(lfile)):
+        try:
+            fctx = repo[rev][standin(lfile)]
+        except LookupError:
+            fctx = None
+        if not fctx or fctx.data().strip() != hashfile(repo.wjoin(lfile)):
             modified.append(lfile)
         else:
             clean.append(lfile)

--- a/tests/test-largefiles.t	Fri Jan 11 16:30:29 2013 +0100
+++ b/tests/test-largefiles.t	Fri Jan 11 16:30:29 2013 +0100
@@ -1220,6 +1220,10 @@
   $ hg status
   M large
 
+- revert should be able to revert files introduced in a pending merge
+  $ hg revert --all -r .
+  removing .hglf/large
+
 Test that a normal file and a largefile with the same name and path cannot
 coexist.