--- a/src/hotspot/share/gc/shenandoah/shenandoahFreeSet.cpp	Wed Nov 27 10:21:22 2019 +0100
+++ b/src/hotspot/share/gc/shenandoah/shenandoahFreeSet.cpp	Tue Nov 26 10:47:46 2019 +0100
@@ -29,6 +29,7 @@
 #include "gc/shenandoah/shenandoahMarkingContext.inline.hpp"
 #include "gc/shenandoah/shenandoahTraversalGC.hpp"
 #include "logging/logStream.hpp"
+#include "runtime/orderAccess.hpp"
 
 ShenandoahFreeSet::ShenandoahFreeSet(ShenandoahHeap* heap, size_t max_regions) :
   _heap(heap),