a90c6dd460
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@224658 91177308-0d34-0410-b5e6-96231b3b80d8
36 lines
1.1 KiB
C++
36 lines
1.1 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.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
// <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 <utility>
|
|
#include <tuple>
|
|
#include <cassert>
|
|
|
|
int main()
|
|
{
|
|
#ifndef _LIBCPP_HAS_NO_VARIADICS
|
|
{
|
|
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));
|
|
}
|
|
#endif // _LIBCPP_HAS_NO_VARIADICS
|
|
}
|