libstdc++-v3/testsuite/20_util/tuple/cons/44487.cc

   1 // { dg-do compile { target c++11 } }
   2
   3 // Copyright (C) 2010-2022 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 #include <tuple>
  21
  22 int x, y;
  23
  24 std::tuple<int&, int&>
  25 foo1()
  26 {
  27   std::pair<int&, int&> blah(x, y);
  28   return blah;
  29 }
  30
  31 std::tuple<int&, int&>
  32 foo2()
  33 {
  34   const std::pair<int&, int&> blah(x, y);
  35   return blah;
  36 }
  37
  38 std::tuple<int&, int&>
  39 foo3()
  40 {
  41   std::pair<int&, int&> blah(x, y);
  42   return std::tuple<int&, int&>(std::move(blah));
  43 }
  44
  45 std::tuple<int&, int&>
  46 foo4()
  47 {
  48   const std::pair<int&, int&> blah(x, y);
  49   return std::tuple<int&, int&>(std::move(blah));
  50 }