libstdc++-v3/testsuite/20_util/pair/astuple/constexpr_get.cc

   1 // { dg-do compile { target c++11 } }
   2
   3 // Copyright (C) 2013-2020 Free Software Foundation, Inc.
   4 //
   5 // This file is part of the GNU ISO C++ Library.  This library is free
   6 // software; you can redistribute it and/or modify it under the
   7 // terms of the GNU General Public License as published by the
   8 // Free Software Foundation; either version 3, or (at your option)
   9 // any later version.
  10
  11 // This library is distributed in the hope that it will be useful,
  12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 // GNU General Public License for more details.
  15
  16 // You should have received a copy of the GNU General Public License along
  17 // with this library; see the file COPYING3.  If not see
  18 // <http://www.gnu.org/licenses/>.
  19
  20 // Tuple-like access to pair
  21
  22 #include <utility>
  23
  24 std::pair<int, char> p;
  25 const std::pair<int, char> cp;
  26
  27 constexpr const int& cri = std::get<0>(cp);
  28 constexpr int&  ri = std::get<0>(p);
  29 constexpr int&& rri = std::get<0>(std::move(p));
  30
  31 constexpr const char& crc = std::get<1>(cp);
  32 constexpr char&  rc = std::get<1>(p);
  33 constexpr char&& rrc = std::get<1>(std::move(p));