1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
|
// { dg-options "-std=gnu++11" }
// Copyright (C) 2011-2016 Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library. This library is free
// software; you can redistribute it and/or modify it under the
// terms of the GNU General Public License as published by the
// Free Software Foundation; either version 3, or (at your option)
// any later version.
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
// You should have received a copy of the GNU General Public License along
// with this library; see the file COPYING3. If not see
// <http://www.gnu.org/licenses/>.
#include <tuple>
#include <type_traits>
#include <testsuite_hooks.h>
template<typename T>
typename std::decay<T>::type copy(T&& x)
{ return std::forward<T>(x); }
template<typename... Args1, typename... Args2>
void
check_tuple_cat(std::tuple<Args1...> t1, std::tuple<Args2...> t2)
{
bool test __attribute__((unused)) = true;
typedef std::tuple<Args1..., Args2...> concatenated;
auto cat1 = std::tuple_cat( t1, t2 );
auto cat2 = std::tuple_cat(copy(t1), t2 );
auto cat3 = std::tuple_cat( t1, copy(t2));
auto cat4 = std::tuple_cat(copy(t1), copy(t2));
static_assert( std::is_same<decltype(cat1), concatenated>::value, "" );
static_assert( std::is_same<decltype(cat2), concatenated>::value, "" );
static_assert( std::is_same<decltype(cat3), concatenated>::value, "" );
static_assert( std::is_same<decltype(cat4), concatenated>::value, "" );
VERIFY( cat1 == cat2 );
VERIFY( cat1 == cat3 );
VERIFY( cat1 == cat4 );
}
// libstdc++/48476
void test01()
{
int i = 0;
std::tuple<> t0;
std::tuple<int&> t1(i);
std::tuple<int&, int> t2(i, 0);
std::tuple<int const&, int, double> t3(i, 0, 0);
check_tuple_cat(t0, t0);
check_tuple_cat(t0, t1);
check_tuple_cat(t0, t2);
check_tuple_cat(t0, t3);
check_tuple_cat(t1, t0);
check_tuple_cat(t1, t1);
check_tuple_cat(t1, t2);
check_tuple_cat(t1, t3);
check_tuple_cat(t2, t0);
check_tuple_cat(t2, t1);
check_tuple_cat(t2, t2);
check_tuple_cat(t2, t3);
check_tuple_cat(t3, t0);
check_tuple_cat(t3, t1);
check_tuple_cat(t3, t2);
check_tuple_cat(t3, t3);
}
int main()
{
test01();
return 0;
}
|
