libstdc++-v3/testsuite/20_util/tuple/cons/constexpr-3.cc

   1 // { dg-do compile { target c++11 } }
   2
   3 // Copyright (C) 2011-2018 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 <memory>
  21 #include <testsuite_common_types.h>
  22
  23 #include <iostream>
  24
  25 // 3 element tuple
  26 int main()
  27 {
  28   typedef std::tuple<int, int, int> tuple_type;
  29
  30   // 01: default ctor
  31   __gnu_test::constexpr_default_constructible test1;
  32   test1.operator()<tuple_type>();
  33
  34   // 02: default copy ctor
  35   __gnu_test::constexpr_single_value_constructible test2;
  36   test2.operator()<tuple_type, tuple_type>();
  37
  38   // 03: element move ctor, single element
  39   const int i1(415);
  40   constexpr tuple_type t2 { 44, 55, std::move(i1) };
  41
  42   // 04: element move ctor, three element
  43   const int i2(510);
  44   const int i3(408);
  45   const int i4(650);
  46   constexpr tuple_type t4 { std::move(i2), std::move(i3), std::move(i4) };
  47
  48   // 05: value-type conversion constructor
  49   const int i5(310);
  50   const int i6(310);
  51   const int i7(310);
  52   constexpr tuple_type t8(i5, i6, i7);
  53
  54   // 06: different-tuple-type conversion constructor
  55   test2.operator()<tuple_type, std::tuple<short, short, short>>();
  56   test2.operator()<std::tuple<short, short, short>, tuple_type>();
  57
  58   return 0;
  59 }