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 #include <tuple> 17 #include <string> 18 #include <cassert> 19 20 struct Empty {}; 21 22 int main() 23 { 24 { 25 typedef std::tuple<> T; 26 T t0; 27 T t = t0; 28 } 29 { 30 typedef std::tuple<int> T; 31 T t0(2); 32 T t = t0; 33 assert(std::get<0>(t) == 2); 34 } 35 { 36 typedef std::tuple<int, char> T; 37 T t0(2, 'a'); 38 T t = t0; 39 assert(std::get<0>(t) == 2); 40 assert(std::get<1>(t) == 'a'); 41 } 42 { 43 typedef std::tuple<int, char, std::string> T; 44 const T t0(2, 'a', "some text"); 45 T t = t0; 46 assert(std::get<0>(t) == 2); 47 assert(std::get<1>(t) == 'a'); 48 assert(std::get<2>(t) == "some text"); 49 } 50 #if _LIBCPP_STD_VER > 11 51 { 52 typedef std::tuple<int> T; 53 constexpr T t0(2); 54 constexpr T t = t0; 55 static_assert(std::get<0>(t) == 2, ""); 56 } 57 { 58 typedef std::tuple<Empty> T; 59 constexpr T t0; 60 constexpr T t = t0; 61 } 62 #endif 63 } 64
