--- old/src/share/vm/memory/allocation.cpp	Mon Aug  2 14:26:19 2010
+++ new/src/share/vm/memory/allocation.cpp	Mon Aug  2 14:26:19 2010
@@ -43,15 +43,15 @@
   switch (type) {
    case C_HEAP:
     res = (address)AllocateHeap(size, "C_Heap: ResourceOBJ");
+    DEBUG_ONLY(set_allocation_type(res, C_HEAP);)
     break;
    case RESOURCE_AREA:
+    // Will set allocation type in the resource object.
     res = (address)operator new(size);
     break;
    default:
     ShouldNotReachHere();
   }
-  // Set allocation type in the resource object for assertion checks.
-  DEBUG_ONLY(((ResourceObj *)res)->_allocation = type;)
   return res;
 }