--- old/src/hotspot/share/gc/g1/g1RegionToSpaceMapper.hpp	2019-09-30 17:13:08.588029488 -0700
+++ new/src/hotspot/share/gc/g1/g1RegionToSpaceMapper.hpp	2019-09-30 17:13:08.208029502 -0700
@@ -25,6 +25,7 @@
 #ifndef SHARE_GC_G1_G1REGIONTOSPACEMAPPER_HPP
 #define SHARE_GC_G1_G1REGIONTOSPACEMAPPER_HPP
 
+#include "gc/g1/g1MemoryNodeManager.hpp"
 #include "gc/g1/g1PageBasedVirtualSpace.hpp"
 #include "memory/allocation.hpp"
 #include "utilities/debug.hpp"