--- old/src/hotspot/share/gc/shared/stringdedup/stringDedup.cpp	2019-11-28 15:24:24.394095306 +0100
+++ new/src/hotspot/share/gc/shared/stringdedup/stringDedup.cpp	2019-11-28 15:24:24.127086220 +0100
@@ -27,6 +27,7 @@
 #include "gc/shared/stringdedup/stringDedupQueue.hpp"
 #include "gc/shared/stringdedup/stringDedupTable.hpp"
 #include "gc/shared/stringdedup/stringDedupThread.hpp"
+#include "memory/iterator.hpp"
 
 bool StringDedup::_enabled = false;