--- old/src/hotspot/share/gc/cms/concurrentMarkSweepGeneration.cpp	2018-04-05 12:03:13.000000000 -0500
+++ new/src/hotspot/share/gc/cms/concurrentMarkSweepGeneration.cpp	2018-04-05 12:03:13.000000000 -0500
@@ -66,6 +66,7 @@
 #include "oops/oop.inline.hpp"
 #include "prims/jvmtiExport.hpp"
 #include "runtime/atomic.hpp"
+#include "runtime/flags/flagSetting.hpp"
 #include "runtime/globals_extension.hpp"
 #include "runtime/handles.inline.hpp"
 #include "runtime/java.hpp"