--- old/src/hotspot/share/gc/g1/g1ConcurrentRefine.cpp	2019-11-28 15:24:17.325854794 +0100
+++ new/src/hotspot/share/gc/g1/g1ConcurrentRefine.cpp	2019-11-28 15:24:17.057845675 +0100
@@ -29,6 +29,7 @@
 #include "gc/g1/g1DirtyCardQueue.hpp"
 #include "logging/log.hpp"
 #include "memory/allocation.inline.hpp"
+#include "memory/iterator.hpp"
 #include "runtime/java.hpp"
 #include "runtime/thread.hpp"
 #include "utilities/debug.hpp"