--- old/src/hotspot/share/gc/g1/g1RemSetSummary.cpp	2019-11-28 15:24:19.662934318 +0100
+++ new/src/hotspot/share/gc/g1/g1RemSetSummary.cpp	2019-11-28 15:24:19.394925199 +0100
@@ -34,6 +34,7 @@
 #include "gc/g1/heapRegion.hpp"
 #include "gc/g1/heapRegionRemSet.hpp"
 #include "memory/allocation.inline.hpp"
+#include "memory/iterator.hpp"
 #include "runtime/thread.inline.hpp"
 
 void G1RemSetSummary::update() {