--- a/hotspot/src/share/vm/gc_implementation/g1/heapRegion.cpp	Fri Apr 17 12:22:18 2009 -0700
+++ b/hotspot/src/share/vm/gc_implementation/g1/heapRegion.cpp	Thu Apr 23 16:58:16 2009 -0400
@@ -718,7 +718,7 @@
       vl_cl.failures()) {
     g1->concurrent_mark()->print_prev_bitmap_reachable();
   }
-  guarantee(!vl_cl.failures(), "should not have had any failures");
+  guarantee(!vl_cl.failures(), "region verification failed");
   guarantee(p == top(), "end of last object must match end of space");
 }