--- old/src/hotspot/share/gc/g1/g1ConcurrentMark.cpp	2018-02-21 20:48:16.247361667 +0100
+++ new/src/hotspot/share/gc/g1/g1ConcurrentMark.cpp	2018-02-21 20:48:16.015353763 +0100
@@ -38,6 +38,7 @@
 #include "gc/g1/heapRegion.inline.hpp"
 #include "gc/g1/heapRegionRemSet.hpp"
 #include "gc/g1/heapRegionSet.inline.hpp"
+#include "gc/shared/adaptiveSizePolicy.hpp"
 #include "gc/shared/gcId.hpp"
 #include "gc/shared/gcTimer.hpp"
 #include "gc/shared/gcTrace.hpp"