diff -r 0b27f3512f9e -r 37f87013dfd8 src/share/vm/oops/oop.hpp
--- a/src/share/vm/oops/oop.hpp	Wed Jun 04 13:51:09 2008 -0700
+++ b/src/share/vm/oops/oop.hpp	Thu Jun 05 15:57:56 2008 -0700
@@ -358,12 +358,21 @@
   static void set_bs(BarrierSet* bs) { _bs = bs; }
 
   // iterators, returns size of object
-#define OOP_ITERATE_DECL(OopClosureType, nv_suffix)                             \
+#define OOP_ITERATE_DECL(OopClosureType, nv_suffix)                      \
   int oop_iterate(OopClosureType* blk);                                  \
   int oop_iterate(OopClosureType* blk, MemRegion mr);  // Only in mr.
 
   ALL_OOP_OOP_ITERATE_CLOSURES_1(OOP_ITERATE_DECL)
-  ALL_OOP_OOP_ITERATE_CLOSURES_3(OOP_ITERATE_DECL)
+  ALL_OOP_OOP_ITERATE_CLOSURES_2(OOP_ITERATE_DECL)
+
+#ifndef SERIALGC
+
+#define OOP_ITERATE_BACKWARDS_DECL(OopClosureType, nv_suffix)            \
+  int oop_iterate_backwards(OopClosureType* blk);
+
+  ALL_OOP_OOP_ITERATE_CLOSURES_1(OOP_ITERATE_BACKWARDS_DECL)
+  ALL_OOP_OOP_ITERATE_CLOSURES_2(OOP_ITERATE_BACKWARDS_DECL)
+#endif
 
   void oop_iterate_header(OopClosure* blk);
   void oop_iterate_header(OopClosure* blk, MemRegion mr);