forked from mirror/libcxx
You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
37 lines
1.0 KiB
C++
37 lines
1.0 KiB
C++
//===----------------------------------------------------------------------===//
|
|
//
|
|
// 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.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
// UNSUPPORTED: c++98, c++03
|
|
|
|
// <utility>
|
|
|
|
// template <class T1, class T2> struct pair
|
|
|
|
// template <class... Args1, class... Args2>
|
|
// pair(piecewise_construct_t, tuple<Args1...> first_args,
|
|
// tuple<Args2...> second_args);
|
|
|
|
#include <cassert>
|
|
#include <tuple>
|
|
#include <utility>
|
|
|
|
|
|
int main()
|
|
{
|
|
{
|
|
typedef std::pair<int, int*> P1;
|
|
typedef std::pair<int*, int> P2;
|
|
typedef std::pair<P1, P2> P3;
|
|
P3 p3(std::piecewise_construct, std::tuple<int, int*>(3, nullptr),
|
|
std::tuple<int*, int>(nullptr, 4));
|
|
assert(p3.first == P1(3, nullptr));
|
|
assert(p3.second == P2(nullptr, 4));
|
|
}
|
|
}
|