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