--- old/src/hotspot/share/gc/shared/genCollectedHeap.cpp	2019-11-28 15:24:23.201054710 +0100
+++ new/src/hotspot/share/gc/shared/genCollectedHeap.cpp	2019-11-28 15:24:22.932045557 +0100
@@ -55,6 +55,7 @@
 #include "gc/shared/weakProcessor.hpp"
 #include "gc/shared/workgroup.hpp"
 #include "memory/filemap.hpp"
+#include "memory/iterator.hpp"
 #include "memory/metaspaceCounters.hpp"
 #include "memory/resourceArea.hpp"
 #include "memory/universe.hpp"