| //===----------------------------------------------------------------------===// |
| // |
| // 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> |
| // typename tuple_element<I, std::pair<T1, T2> >::type& |
| // get(pair<T1, T2>&); |
| |
| #include <utility> |
| #include <cassert> |
| |
| #include "test_macros.h" |
| |
| #if TEST_STD_VER > 11 |
| struct S { |
| std::pair<int, int> a; |
| int k; |
| constexpr S() : a{1,2}, k(std::get<0>(a)) {} |
| }; |
| |
| constexpr std::pair<int, int> getP () { return { 3, 4 }; } |
| #endif |
| |
| int main() |
| { |
| { |
| typedef std::pair<int, short> P; |
| P p(3, static_cast<short>(4)); |
| assert(std::get<0>(p) == 3); |
| assert(std::get<1>(p) == 4); |
| std::get<0>(p) = 5; |
| std::get<1>(p) = 6; |
| assert(std::get<0>(p) == 5); |
| assert(std::get<1>(p) == 6); |
| } |
| |
| #if TEST_STD_VER > 11 |
| { |
| static_assert(S().k == 1, ""); |
| static_assert(std::get<1>(getP()) == 4, ""); |
| } |
| #endif |
| |
| } |