diff -r f533eb5e7430 -r 0d813fbd94ed src/hotspot/share/gc/z/zStat.hpp
--- a/src/hotspot/share/gc/z/zStat.hpp	Wed Jun 27 11:05:01 2018 +0200
+++ b/src/hotspot/share/gc/z/zStat.hpp	Wed Jun 27 11:05:07 2018 +0200
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2015, 2017, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2015, 2018, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -407,6 +407,14 @@
 };
 
 //
+// Stat metaspace
+//
+class ZStatMetaspace : public AllStatic {
+public:
+  static void print();
+};
+
+//
 // Stat references
 //
 class ZStatReferences : public AllStatic {