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// UNSUPPORTED: c++98, c++03 11 12// <utility> 13 14// template <class T1, class T2> struct pair 15 16// template <class... Args1, class... Args2> 17// pair(piecewise_construct_t, tuple<Args1...> first_args, 18// tuple<Args2...> second_args); 19 20#include <utility> 21#include <tuple> 22#include <cassert> 23 24int main() 25{ 26 { 27 typedef std::pair<int, int*> P1; 28 typedef std::pair<int*, int> P2; 29 typedef std::pair<P1, P2> P3; 30 P3 p3(std::piecewise_construct, std::tuple<int, int*>(3, nullptr), 31 std::tuple<int*, int>(nullptr, 4)); 32 assert(p3.first == P1(3, nullptr)); 33 assert(p3.second == P2(nullptr, 4)); 34 } 35} 36