libstdc++-v3/testsuite/20_util/common_type/requirements/explicit_instantiation.cc

   1 // { dg-options "-std=gnu++0x" }
   2 // { dg-do compile }
   3
   4 // Copyright (C) 2008-2014 Free Software Foundation, Inc.
   5 //
   6 // This file is part of the GNU ISO C++ Library.  This library is free
   7 // software; you can redistribute it and/or modify it under the
   8 // terms of the GNU General Public License as published by the
   9 // Free Software Foundation; either version 3, or (at your option)
  10 // any later version.
  11
  12 // This library is distributed in the hope that it will be useful,
  13 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 // GNU General Public License for more details.
  16
  17 // You should have received a copy of the GNU General Public License along
  18 // with this library; see the file COPYING3.  If not see
  19 // <http://www.gnu.org/licenses/>.
  20
  21 // NB: This file is for testing type_traits with NO OTHER INCLUDES.
  22
  23 #include <type_traits>
  24
  25 namespace std
  26 {
  27   typedef int test_type1;
  28   typedef int& test_type2;
  29   typedef double test_type3;
  30   typedef float test_type4;
  31   typedef void test_type5;
  32   typedef const void test_type6;
  33
  34   template struct common_type<test_type1>;
  35   template struct common_type<test_type1, test_type2>;
  36   template struct common_type<test_type1, test_type2, test_type3>;
  37   template struct common_type<test_type1, test_type2, test_type3, test_type4>;
  38
  39   template struct common_type<test_type5>;
  40   template struct common_type<test_type5, test_type6>;
  41 }