1 //===----------------------------------------------------------------------===// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===----------------------------------------------------------------------===// 8 9 // <tuple> 10 11 // template <class... Types> class tuple; 12 13 // template <class U1, class U2> tuple(const pair<U1, U2>& u); 14 15 // UNSUPPORTED: c++98, c++03 16 17 #include <tuple> 18 #include <utility> 19 #include <cassert> 20 21 #include "test_macros.h" 22 23 int main() 24 { 25 { 26 typedef std::pair<long, char> T0; 27 typedef std::tuple<long long, short> T1; 28 T0 t0(2, 'a'); 29 T1 t1 = t0; 30 assert(std::get<0>(t1) == 2); 31 assert(std::get<1>(t1) == short('a')); 32 } 33 #if TEST_STD_VER > 11 34 { 35 typedef std::pair<long, char> P0; 36 typedef std::tuple<long long, short> T1; 37 constexpr P0 p0(2, 'a'); 38 constexpr T1 t1 = p0; 39 static_assert(std::get<0>(t1) == std::get<0>(p0), ""); 40 static_assert(std::get<1>(t1) == std::get<1>(p0), ""); 41 static_assert(std::get<0>(t1) == 2, ""); 42 static_assert(std::get<1>(t1) == short('a'), ""); 43 } 44 #endif 45 } 46