--- old/src/hotspot/share/gc/g1/g1RegionToSpaceMapper.hpp	2019-10-15 07:17:57.682091004 -0700
+++ new/src/hotspot/share/gc/g1/g1RegionToSpaceMapper.hpp	2019-10-15 07:17:57.306090992 -0700
@@ -53,6 +53,8 @@
   // Mapping management
   CHeapBitMap _commit_map;
 
+  MemoryType _memory_type;
+
   G1RegionToSpaceMapper(ReservedSpace rs, size_t used_size, size_t page_size, size_t region_granularity, size_t commit_factor, MemoryType type);
 
   void fire_on_commit(uint start_idx, size_t num_regions, bool zero_filled);