libstdc++-v3/testsuite/23_containers/array/debug/constexpr_c++11.cc

   1 // { dg-options "-std=gnu++11 -D_GLIBCXX_DEBUG" }
   2 // { dg-do compile { target c++11 } }
   3
   4 // Copyright (C) 2011-2022 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 <array>
  22
  23 void test01()
  24 {
  25   // array
  26   constexpr std::array<std::size_t, 6> a = { { 0, 55, 66, 99, 4115, 2 } };
  27   constexpr auto v1 = a[1];
  28   constexpr auto v2 = a.at(2);
  29   constexpr auto v3 = a.front();
  30   constexpr auto v4 = a.back();
  31   static_assert( (v1 + v2 + v3 + v4) == (55 + 66 + 0 + 2), "" );
  32 }