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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
//
//===----------------------------------------------------------------------===//
// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
// constexpr expected() noexcept;
#include <cassert>
#include <expected>
#include <type_traits>
#include "test_macros.h"
// Test noexcept
struct NoDefaultCtor {
constexpr NoDefaultCtor() = delete;
};
static_assert(std::is_nothrow_default_constructible_v<std::expected<void, int>>);
static_assert(std::is_nothrow_default_constructible_v<std::expected<void, NoDefaultCtor>>);
struct MyInt {
int i;
friend constexpr bool operator==(const MyInt&, const MyInt&) = default;
};
constexpr bool test() {
// default constructible
{
std::expected<void, int> e;
assert(e.has_value());
}
// non-default constructible
{
std::expected<void, NoDefaultCtor> e;
assert(e.has_value());
}
return true;
}
int main(int, char**) {
test();
static_assert(test());
return 0;
}
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