--- old/src/share/vm/gc_implementation/g1/vmStructs_g1.hpp	2014-06-23 16:11:25.737385956 +0200
+++ new/src/share/vm/gc_implementation/g1/vmStructs_g1.hpp	2014-06-23 16:11:25.629381584 +0200
@@ -69,7 +69,8 @@
                                                                               \
   declare_type(G1CollectedHeap, SharedHeap)                                   \
                                                                               \
-  declare_type(HeapRegion, ContiguousSpace)                                   \
+  declare_type(G1OffsetTableContigSpace, CompactibleSpace)                    \
+  declare_type(HeapRegion, G1OffsetTableContigSpace)                          \
   declare_toplevel_type(HeapRegionSeq)                                        \
   declare_toplevel_type(HeapRegionSetBase)                                    \
   declare_toplevel_type(HeapRegionSetCount)                                   \