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//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
// <tuple>
// template <class... Types> class tuple;
// template <class U1, class U2> tuple(pair<U1, U2>&& u);
// UNSUPPORTED: c++03
#include <tuple>
#include <utility>
#include <memory>
#include <cassert>
#include "test_macros.h"
struct B
{
int id_;
explicit B(int i) : id_(i) {}
virtual ~B() {}
};
struct D
: B
{
explicit D(int i) : B(i) {}
};
int main(int, char**)
{
{
typedef std::pair<long, std::unique_ptr<D>> T0;
typedef std::tuple<long long, std::unique_ptr<B>> T1;
T0 t0(2, std::unique_ptr<D>(new D(3)));
T1 t1 = std::move(t0);
assert(std::get<0>(t1) == 2);
assert(std::get<1>(t1)->id_ == 3);
}
#if TEST_STD_VER > 11
{
using pair_t = std::pair<int, char>;
constexpr std::tuple<long, long> t(pair_t(0, 'a'));
static_assert(std::get<0>(t) == 0, "");
static_assert(std::get<1>(t) == 'a', "");
}
#endif
return 0;
}
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