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52 lines
1.4 KiB
C++
52 lines
1.4 KiB
C++
//===----------------------------------------------------------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is dual licensed under the MIT and the University of Illinois Open
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// Source Licenses. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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// <array>
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// template <size_t I, class T, size_t N> const T&& get(const array<T, N>&& a);
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// UNSUPPORTED: c++98, c++03
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#include <array>
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#include <memory>
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#include <type_traits>
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#include <utility>
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#include <cassert>
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#include "test_macros.h"
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// std::array is explicitly allowed to be initialized with A a = { init-list };.
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// Disable the missing braces warning for this reason.
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#include "disable_missing_braces_warning.h"
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int main()
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{
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{
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typedef std::unique_ptr<double> T;
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typedef std::array<T, 1> C;
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const C c = {std::unique_ptr<double>(new double(3.5))};
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static_assert(std::is_same<const T&&, decltype(std::get<0>(std::move(c)))>::value, "");
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static_assert(noexcept(std::get<0>(std::move(c))), "");
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const T&& t = std::get<0>(std::move(c));
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assert(*t == 3.5);
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}
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#if TEST_STD_VER > 11
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{
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typedef double T;
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typedef std::array<T, 3> C;
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constexpr const C c = {1, 2, 3.5};
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static_assert(std::get<0>(std::move(c)) == 1, "");
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static_assert(std::get<1>(std::move(c)) == 2, "");
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static_assert(std::get<2>(std::move(c)) == 3.5, "");
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}
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#endif
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}
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