Eric Fiselier | 199bee0 | 2015-12-18 00:36:55 +0000 | [diff] [blame] | 1 | //===----------------------------------------------------------------------===// |
| 2 | // |
| 3 | // The LLVM Compiler Infrastructure |
| 4 | // |
| 5 | // This file is dual licensed under the MIT and the University of Illinois Open |
| 6 | // Source Licenses. See LICENSE.TXT for details. |
| 7 | // |
| 8 | //===----------------------------------------------------------------------===// |
| 9 | |
| 10 | // <utility> |
| 11 | |
| 12 | // template <class T1, class T2> struct pair |
| 13 | |
| 14 | // template<size_t I, class T1, class T2> |
| 15 | // const typename tuple_element<I, std::pair<T1, T2> >::type&& |
| 16 | // get(const pair<T1, T2>&&); |
| 17 | |
| 18 | // UNSUPPORTED: c++98, c++03 |
| 19 | |
| 20 | #include <utility> |
| 21 | #include <memory> |
| 22 | #include <type_traits> |
| 23 | #include <cassert> |
| 24 | |
| 25 | #include "test_macros.h" |
| 26 | |
| 27 | int main() |
| 28 | { |
| 29 | { |
| 30 | typedef std::pair<std::unique_ptr<int>, short> P; |
| 31 | const P p(std::unique_ptr<int>(new int(3)), 4); |
| 32 | static_assert(std::is_same<const std::unique_ptr<int>&&, decltype(std::get<0>(std::move(p)))>::value, ""); |
| 33 | static_assert(noexcept(std::get<0>(std::move(p))), ""); |
| 34 | const std::unique_ptr<int>&& ptr = std::get<0>(std::move(p)); |
| 35 | assert(*ptr == 3); |
| 36 | } |
| 37 | |
| 38 | { |
| 39 | int x = 42; |
| 40 | int const y = 43; |
| 41 | std::pair<int&, int const&> const p(x, y); |
| 42 | static_assert(std::is_same<int&, decltype(std::get<0>(std::move(p)))>::value, ""); |
| 43 | static_assert(noexcept(std::get<0>(std::move(p))), ""); |
| 44 | static_assert(std::is_same<int const&, decltype(std::get<1>(std::move(p)))>::value, ""); |
| 45 | static_assert(noexcept(std::get<1>(std::move(p))), ""); |
| 46 | } |
| 47 | |
| 48 | { |
| 49 | int x = 42; |
| 50 | int const y = 43; |
| 51 | std::pair<int&&, int const&&> const p(std::move(x), std::move(y)); |
| 52 | static_assert(std::is_same<int&&, decltype(std::get<0>(std::move(p)))>::value, ""); |
| 53 | static_assert(noexcept(std::get<0>(std::move(p))), ""); |
| 54 | static_assert(std::is_same<int const&&, decltype(std::get<1>(std::move(p)))>::value, ""); |
| 55 | static_assert(noexcept(std::get<1>(std::move(p))), ""); |
| 56 | } |
| 57 | |
| 58 | #if TEST_STD_VER > 11 |
| 59 | { |
| 60 | typedef std::pair<int, short> P; |
| 61 | constexpr const P p1(3, 4); |
| 62 | static_assert(std::get<0>(std::move(p1)) == 3, ""); |
| 63 | static_assert(std::get<1>(std::move(p1)) == 4, ""); |
| 64 | } |
| 65 | #endif |
| 66 | } |