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//===----------------------------------------------------------------------===//
//
// 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, c++11, c++14
// <optional>
// optional(optional<T>&& rhs);
#include <optional>
#include <string>
#include <type_traits>
#include <utility>
using std::optional;
struct X {};
struct Y
{
Y() = default;
Y(Y&&) {}
};
struct Z
{
Z() = default;
Z(Z&&) = delete;
Z(const Z&) = delete;
Z& operator=(Z&&) = delete;
Z& operator=(const Z&) = delete;
};
int main()
{
{
using T = int;
static_assert((std::is_trivially_copy_constructible<optional<T>>::value), "");
constexpr optional<T> opt;
constexpr optional<T> opt2 = std::move(opt);
(void)opt2;
}
{
using T = X;
static_assert((std::is_trivially_copy_constructible<optional<T>>::value), "");
constexpr optional<T> opt;
constexpr optional<T> opt2 = std::move(opt);
(void)opt2;
}
static_assert(!(std::is_trivially_move_constructible<optional<Y>>::value), "");
static_assert(!(std::is_trivially_move_constructible<optional<std::string>>::value), "");
static_assert(!(std::is_move_constructible<optional<Z>>::value), "");
}
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