--- a/src/hotspot/share/prims/whitebox.cpp	Thu Mar 15 21:29:36 2018 +0100
+++ b/src/hotspot/share/prims/whitebox.cpp	Fri Mar 23 18:54:12 2018 +0100
@@ -32,6 +32,7 @@
 #include "code/codeCache.hpp"
 #include "compiler/methodMatcher.hpp"
 #include "compiler/directivesParser.hpp"
+#include "gc/shared/genCollectedHeap.hpp"
 #include "jvmtifiles/jvmtiEnv.hpp"
 #include "memory/metadataFactory.hpp"
 #include "memory/metaspaceShared.hpp"