--- old/src/share/vm/gc_implementation/g1/g1_globals.hpp	2013-01-15 10:38:47.799609797 -0800
+++ new/src/share/vm/gc_implementation/g1/g1_globals.hpp	2013-01-15 10:38:47.576408110 -0800
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2001, 2012, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2001, 2013, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -340,8 +340,14 @@
                                                                             \
   develop(bool, G1EvacuationFailureALotDuringMixedGC, true,                 \
           "Force use of evacuation failure handling during mixed "          \
-          "evacuation pauses")
-
+          "evacuation pauses")                                              \
+                                                                            \
+  develop(bool, G1VerifyBitmaps, false,                                     \
+          "Verifies the consistency of the marking bitmaps")                \
+                                                                            \
+  develop(bool, G1VerifyPrevBitmap, false,                                  \
+          "Verifies the consistency of the prev marking bitmap")
+ 
 G1_FLAGS(DECLARE_DEVELOPER_FLAG, DECLARE_PD_DEVELOPER_FLAG, DECLARE_PRODUCT_FLAG, DECLARE_PD_PRODUCT_FLAG, DECLARE_DIAGNOSTIC_FLAG, DECLARE_EXPERIMENTAL_FLAG, DECLARE_NOTPRODUCT_FLAG, DECLARE_MANAGEABLE_FLAG, DECLARE_PRODUCT_RW_FLAG)
 
 #endif // SHARE_VM_GC_IMPLEMENTATION_G1_G1_GLOBALS_HPP