--- old/src/hotspot/share/memory/heapShared.hpp	2018-09-02 12:26:09.823548148 -0700
+++ new/src/hotspot/share/memory/heapShared.hpp	2018-09-02 12:26:09.567538603 -0700
@@ -180,6 +180,7 @@
   static ResourceBitMap calculate_oopmap(MemRegion region);
   static bool has_been_seen_during_subgraph_klasses_recording(oop obj);
   static void record_subgraph_klasses_for(KlassSubGraphInfo* subgraph_info, oop obj);
+  static oop archive_reachable_objects_from(int level, oop orig_obj, TRAPS);
 #endif
 };
 #endif // SHARE_VM_MEMORY_HEAPSHARED_HPP