// 2005-01-26 Douglas Gregor <doug.gregor -at- gmail.com>
//
-// Copyright (C) 2005-2017 Free Software Foundation, Inc.
+// Copyright (C) 2005-2020 Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library. This library is free
// software; you can redistribute it and/or modify it under the
// with this library; see the file COPYING3. If not see
// <http://www.gnu.org/licenses/>.
+// { dg-additional-options "-Wno-volatile" { target c++2a } }
+
// 3.4 function return types
#include <tr1/functional>
#include <tr1/type_traits>