libstdc++-v3/testsuite/20_util/tuple/element_access/get2.cc

   1 // { dg-do compile { target c++11 } }
   2
   3 // 2011-05-17  Paolo Carlini  <paolo.carlini@oracle.com>
   4 //
   5 // Copyright (C) 2011-2022 Free Software Foundation, Inc.
   6 //
   7 // This file is part of the GNU ISO C++ Library.  This library is free
   8 // software; you can redistribute it and/or modify it under the
   9 // terms of the GNU General Public License as published by the
  10 // Free Software Foundation; either version 3, or (at your option)
  11 // any later version.
  12 //
  13 // This library is distributed in the hope that it will be useful,
  14 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 // GNU General Public License for more details.
  17 //
  18 // You should have received a copy of the GNU General Public License along
  19 // with this library; see the file COPYING3.  If not see
  20 // <http://www.gnu.org/licenses/>.
  21
  22 #include <tuple>
  23
  24 void test01()
  25 {
  26   std::tuple<int> t1;
  27
  28   int&&   t1one __attribute__((unused)) = std::get<0>(std::move(t1));
  29
  30   std::tuple<float, int> t2;
  31
  32   float&& t2one __attribute__((unused)) = std::get<0>(std::move(t2));
  33   int&&   t2two __attribute__((unused)) = std::get<1>(std::move(t2));
  34
  35   std::tuple<short, int, double> t3;
  36
  37   short&&  t3one __attribute__((unused)) = std::get<0>(std::move(t3));
  38   int&&    t3two __attribute__((unused)) = std::get<1>(std::move(t3));
  39   double&& t3thr __attribute__((unused)) = std::get<2>(std::move(t3));
  40
  41   const std::tuple<int> ct1;
  42
  43   const int&&   ct1one __attribute__((unused)) = std::get<0>(std::move(ct1));
  44
  45   const std::tuple<float, int> ct2;
  46
  47   const float&& ct2one __attribute__((unused)) = std::get<0>(std::move(ct2));
  48   const int&&   ct2two __attribute__((unused)) = std::get<1>(std::move(ct2));
  49
  50   const std::tuple<short, int, double> ct3;
  51
  52   const short&&  ct3one __attribute__((unused)) = std::get<0>(std::move(ct3));
  53   const int&&    ct3two __attribute__((unused)) = std::get<1>(std::move(ct3));
  54   const double&& ct3thr __attribute__((unused)) = std::get<2>(std::move(ct3));
  55 }