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 // <tuple> 11 12 // template <class... Types> class tuple; 13 14 // tuple(const tuple& u) = default; 15 16 // UNSUPPORTED: c++98, c++03 17 18 #include <tuple> 19 #include <string> 20 #include <cassert> 21 22 #include "test_macros.h" 23 24 struct Empty {}; 25 main()26int main() 27 { 28 { 29 typedef std::tuple<> T; 30 T t0; 31 T t = t0; 32 ((void)t); // Prevent unused warning 33 } 34 { 35 typedef std::tuple<int> T; 36 T t0(2); 37 T t = t0; 38 assert(std::get<0>(t) == 2); 39 } 40 { 41 typedef std::tuple<int, char> T; 42 T t0(2, 'a'); 43 T t = t0; 44 assert(std::get<0>(t) == 2); 45 assert(std::get<1>(t) == 'a'); 46 } 47 { 48 typedef std::tuple<int, char, std::string> T; 49 const T t0(2, 'a', "some text"); 50 T t = t0; 51 assert(std::get<0>(t) == 2); 52 assert(std::get<1>(t) == 'a'); 53 assert(std::get<2>(t) == "some text"); 54 } 55 #if TEST_STD_VER > 11 56 { 57 typedef std::tuple<int> T; 58 constexpr T t0(2); 59 constexpr T t = t0; 60 static_assert(std::get<0>(t) == 2, ""); 61 } 62 { 63 typedef std::tuple<Empty> T; 64 constexpr T t0; 65 constexpr T t = t0; 66 constexpr Empty e = std::get<0>(t); 67 ((void)e); // Prevent unused warning 68 } 69 #endif 70 } 71