libstdc++-v3/testsuite/18_support/initializer_list/requirements/constexpr_functions.cc

   1 // { dg-do compile }
   2 // { dg-options "-std=gnu++0x" }
   3
   4 // Copyright (C) 2010-2013 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 #include <initializer_list>
  22 #include <testsuite_common_types.h>
  23
  24 namespace __gnu_test
  25 {
  26   struct constexpr_member_functions
  27   {
  28     template<typename _Ttesttype>
  29       void
  30       operator()()
  31       {
  32         struct _Concept
  33         {
  34           void __constraint()
  35           {
  36             constexpr _Ttesttype obj;
  37             constexpr auto v4 __attribute__((unused))
  38               = obj.size();
  39             constexpr auto v5 __attribute__((unused))
  40               = obj.begin();
  41             constexpr auto v6 __attribute__((unused))
  42               = obj.end();
  43           }
  44         };
  45
  46         _Concept c;
  47         c.__constraint();
  48       }
  49   };
  50 }
  51
  52 int main()
  53 {
  54   __gnu_test::constexpr_member_functions test;
  55   test.operator()<std::initializer_list<int>>();
  56   return 0;
  57 }