[gcc] GCC 4.5.0=>4.5.1

gcc/libstdc++-v3/testsuite/tr1/4_metaprogramming/is_arithmetic/requirements/explicit_instantiation.cc

-// { dg-do compile }
-// 2007-04-30 Benjamin Kosnik <bkoz@redhat.com>
-
-// Copyright (C) 2007, 2009 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
-// terms of the GNU General Public License as published by the
-// Free Software Foundation; either version 3, or (at your option)
-// any later version.
-
-// This library 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 for more details.
-
-// You should have received a copy of the GNU General Public License along
-// with this library; see the file COPYING3.  If not see
-// <http://www.gnu.org/licenses/>.
-
-
-// NB: This file is for testing type_traits with NO OTHER INCLUDES.
-
-#include <tr1/type_traits>
-
-namespace std
-{
-  namespace tr1
-  {
-    typedef short test_type;
-    template struct is_arithmetic<test_type>;
-  }
-}