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
|
//===----------------------------------------------------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is dual licensed under the MIT and the University of Illinois Open
// Source Licenses. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
// <utility>
// template <class T1, class T2> struct pair
// template<size_t I, class T1, class T2>
// const typename tuple_element<I, std::pair<T1, T2> >::type&&
// get(const pair<T1, T2>&&);
// UNSUPPORTED: c++98, c++03
#include <utility>
#include <memory>
#include <type_traits>
#include <cassert>
#include "test_macros.h"
int main()
{
{
typedef std::pair<std::unique_ptr<int>, short> P;
const P p(std::unique_ptr<int>(new int(3)), static_cast<short>(4));
static_assert(std::is_same<const std::unique_ptr<int>&&, decltype(std::get<0>(std::move(p)))>::value, "");
static_assert(noexcept(std::get<0>(std::move(p))), "");
const std::unique_ptr<int>&& ptr = std::get<0>(std::move(p));
assert(*ptr == 3);
}
{
int x = 42;
int const y = 43;
std::pair<int&, int const&> const p(x, y);
static_assert(std::is_same<int&, decltype(std::get<0>(std::move(p)))>::value, "");
static_assert(noexcept(std::get<0>(std::move(p))), "");
static_assert(std::is_same<int const&, decltype(std::get<1>(std::move(p)))>::value, "");
static_assert(noexcept(std::get<1>(std::move(p))), "");
}
{
int x = 42;
int const y = 43;
std::pair<int&&, int const&&> const p(std::move(x), std::move(y));
static_assert(std::is_same<int&&, decltype(std::get<0>(std::move(p)))>::value, "");
static_assert(noexcept(std::get<0>(std::move(p))), "");
static_assert(std::is_same<int const&&, decltype(std::get<1>(std::move(p)))>::value, "");
static_assert(noexcept(std::get<1>(std::move(p))), "");
}
#if TEST_STD_VER > 11
{
typedef std::pair<int, short> P;
constexpr const P p1(3, static_cast<short>(4));
static_assert(std::get<0>(std::move(p1)) == 3, "");
static_assert(std::get<1>(std::move(p1)) == 4, "");
}
#endif
}
|
