1//===----------------------------------------------------------------------===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8
9// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
10
11// constexpr explicit expected(in_place_t) noexcept;
12
13#include <cassert>
14#include <expected>
15#include <type_traits>
16#include <utility>
17
18// test explicit
19static_assert(std::is_constructible_v<std::expected<void, int>, std::in_place_t>);
20static_assert(!std::is_convertible_v<std::in_place_t, std::expected<void, int>>);
21
22// test noexcept
23static_assert(std::is_nothrow_constructible_v<std::expected<void, int>, std::in_place_t>);
24
25constexpr bool test() {
26 std::expected<void, int> e(std::in_place);
27 assert(e.has_value());
28
29 return true;
30}
31
32int main(int, char**) {
33 test();
34 static_assert(test());
35 return 0;
36}
37

source code of libcxx/test/std/utilities/expected/expected.void/ctor/ctor.inplace.pass.cpp