--- a/hotspot/src/share/vm/oops/instanceKlass.hpp	Wed Jun 04 13:51:09 2008 -0700
+++ b/hotspot/src/share/vm/oops/instanceKlass.hpp	Thu Jun 05 15:57:56 2008 -0700
@@ -656,13 +656,21 @@
     return oop_oop_iterate_v_m(obj, blk, mr);
   }
 
-#define InstanceKlass_OOP_OOP_ITERATE_DECL(OopClosureType, nv_suffix)   \
-  int  oop_oop_iterate##nv_suffix(oop obj, OopClosureType* blk);        \
-  int  oop_oop_iterate##nv_suffix##_m(oop obj, OopClosureType* blk,     \
+#define InstanceKlass_OOP_OOP_ITERATE_DECL(OopClosureType, nv_suffix)      \
+  int  oop_oop_iterate##nv_suffix(oop obj, OopClosureType* blk);           \
+  int  oop_oop_iterate##nv_suffix##_m(oop obj, OopClosureType* blk,        \
                                       MemRegion mr);
 
   ALL_OOP_OOP_ITERATE_CLOSURES_1(InstanceKlass_OOP_OOP_ITERATE_DECL)
-  ALL_OOP_OOP_ITERATE_CLOSURES_3(InstanceKlass_OOP_OOP_ITERATE_DECL)
+  ALL_OOP_OOP_ITERATE_CLOSURES_2(InstanceKlass_OOP_OOP_ITERATE_DECL)
+
+#ifndef SERIALGC
+#define InstanceKlass_OOP_OOP_ITERATE_BACKWARDS_DECL(OopClosureType, nv_suffix) \
+  int  oop_oop_iterate_backwards##nv_suffix(oop obj, OopClosureType* blk);
+
+  ALL_OOP_OOP_ITERATE_CLOSURES_1(InstanceKlass_OOP_OOP_ITERATE_BACKWARDS_DECL)
+  ALL_OOP_OOP_ITERATE_CLOSURES_2(InstanceKlass_OOP_OOP_ITERATE_BACKWARDS_DECL)
+#endif // !SERIALGC
 
   void iterate_static_fields(OopClosure* closure);
   void iterate_static_fields(OopClosure* closure, MemRegion mr);