| 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: no-threads |
| 10 | // UNSUPPORTED: c++03, c++11, c++14, c++17 |
| 11 | |
| 12 | // struct nostopstate_t { |
| 13 | // explicit nostopstate_t() = default; |
| 14 | // }; |
| 15 | // |
| 16 | // inline constexpr nostopstate_t nostopstate{}; |
| 17 | |
| 18 | #include <concepts> |
| 19 | #include <stop_token> |
| 20 | #include <type_traits> |
| 21 | |
| 22 | #include "test_macros.h" |
| 23 | |
| 24 | static_assert(std::is_trivially_default_constructible_v<std::nostopstate_t>); |
| 25 | |
| 26 | struct Empty {}; |
| 27 | static_assert(sizeof(Empty) == sizeof(std::nostopstate_t)); |
| 28 | |
| 29 | template <class T> |
| 30 | void conversionTest(T); |
| 31 | |
| 32 | template <class T> |
| 33 | concept ImplicitlyDefaultConstructible = requires { conversionTest<T>({}); }; |
| 34 | static_assert(!ImplicitlyDefaultConstructible<std::nostopstate_t>); |
| 35 | |
| 36 | int main(int, char**) { |
| 37 | [[maybe_unused]] std::same_as<std::nostopstate_t> auto x = std::nostopstate; |
| 38 | [[maybe_unused]] auto y = std::nostopstate_t{}; |
| 39 | |
| 40 | return 0; |
| 41 | } |
| 42 | |