--- /dev/null	2017-03-07 11:44:12.271151064 +0100
+++ new/src/share/vm/metaprogramming/decay.hpp	2017-07-10 16:07:03.058519277 +0200
@@ -0,0 +1,41 @@
+/*
+ * Copyright (c) 2017, 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
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ *
+ */
+
+#ifndef SHARE_VM_METAPROGRAMMING_DECAY_HPP
+#define SHARE_VM_METAPROGRAMMING_DECAY_HPP
+
+#include "memory/allocation.hpp"
+#include "metaprogramming/removeCV.hpp"
+#include "metaprogramming/removeReference.hpp"
+
+// This trait trims the type from CV qualifiers and references.
+// This trait provides a subset of the functionality of std::decay;
+// array types and function types are not supported here.
+
+template <typename T>
+struct Decay: AllStatic {
+  typedef typename RemoveCV<typename RemoveReference<T>::type>::type type;
+};
+
+#endif // SHARE_VM_METAPROGRAMMING_DECAY_HPP