1// { dg-options "-std=gnu++11" }
2
3// 2010-04-30  Paolo Carlini  <paolo.carlini@oracle.com>
4//
5// Copyright (C) 2010-2015 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// Tuple
23
24#include <tuple>
25#include <type_traits>
26#include <testsuite_hooks.h>
27
28void
29test01()
30{
31  bool test __attribute__((unused)) = true;
32
33  std::forward_as_tuple();
34
35  VERIFY( std::get<0>(std::forward_as_tuple(-1)) == -1 );
36  VERIFY( (std::is_same<decltype(std::forward_as_tuple(-1)),
37	   std::tuple<int&&>>::value) );
38
39  const int i1 = 1;
40  const int i2 = 2;
41  const double d1 = 4.0;
42  auto t1 = std::forward_as_tuple(i1, i2, d1);
43  VERIFY( (std::is_same<decltype(t1), std::tuple<const int&,
44	   const int&, const double&>>::value) );
45  VERIFY( std::get<0>(t1) == i1 );
46  VERIFY( std::get<1>(t1) == i2 );
47  VERIFY( std::get<2>(t1) == d1 );
48
49  typedef const int a_type1[3];
50  a_type1 a1 = { -1, 1, 2 };
51  auto t2 = std::forward_as_tuple(a1);
52  VERIFY( (std::is_same<decltype(t2), std::tuple<a_type1&>>::value) );
53  VERIFY( std::get<0>(t2)[0] == a1[0] );
54  VERIFY( std::get<0>(t2)[1] == a1[1] );
55  VERIFY( std::get<0>(t2)[2] == a1[2] );
56
57  typedef int a_type2[2];
58  a_type2 a2 = { 2, -2 };
59  volatile int i4 = 1;
60  auto t3 = std::forward_as_tuple(a2, i4);
61  VERIFY( (std::is_same<decltype(t3), std::tuple<a_type2&,
62	   volatile int&>>::value) );
63  VERIFY( std::get<0>(t3)[0] == a2[0] );
64  VERIFY( std::get<0>(t3)[1] == a2[1] );
65  VERIFY( std::get<1>(t3) == i4 );
66}
67
68int main()
69{
70  test01();
71  return 0;
72}
73