libstdc++-v3/testsuite/20_util/tuple/moveable2.cc

   1 // { dg-options "-std=gnu++0x" }
   2
   3 // Copyright (C) 2008, 2009 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
  21 #include <tuple>
  22 #include <utility>
  23
  24 struct MoveOnly
  25 {
  26   MoveOnly () { }
  27
  28   MoveOnly (MoveOnly&&) { }
  29
  30   MoveOnly& operator=(MoveOnly&&)
  31   { return *this; }
  32
  33 private:
  34   MoveOnly(MoveOnly const&); // = delete
  35   MoveOnly& operator=(MoveOnly const&); // = delete
  36 };
  37
  38 MoveOnly
  39 make_move_only ()
  40 { return MoveOnly(); }
  41
  42 // http://gcc.gnu.org/ml/libstdc++/2008-02/msg00046.html
  43 void test01()
  44 {
  45   typedef std::tuple<MoveOnly> move_only_tuple;
  46
  47   move_only_tuple t1(make_move_only());
  48   move_only_tuple t2(std::move(t1));
  49   move_only_tuple t3 = std::move(t2);
  50   t1 = std::move(t3);
  51
  52   typedef std::tuple<MoveOnly, MoveOnly> move_only_tuple2;
  53
  54   move_only_tuple2 t4(make_move_only(), make_move_only());
  55   move_only_tuple2 t5(std::move(t4));
  56   move_only_tuple2 t6 = std::move(t5);
  57   t4 = std::move(t6);
  58 }
  59
  60 int main()
  61 {
  62   test01();
  63   return 0;
  64 }