| 1 | //===----------------------------------------------------------------------===// |
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| 2 | // |
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| 3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
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| 4 | // See https://llvm.org/LICENSE.txt for license information. |
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| 5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
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| 6 | // |
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| 7 | //===----------------------------------------------------------------------===// |
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| 8 | // |
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| 9 | // UNSUPPORTED: no-threads |
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| 10 | // UNSUPPORTED: libcpp-has-no-experimental-stop_token |
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| 11 | // UNSUPPORTED: c++03, c++11, c++14, c++17 |
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| 12 | |
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| 13 | // struct nostopstate_t { |
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| 14 | // explicit nostopstate_t() = default; |
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| 15 | // }; |
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| 16 | // |
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| 17 | // inline constexpr nostopstate_t nostopstate{}; |
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| 18 | |
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| 19 | #include <concepts> |
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| 20 | #include <stop_token> |
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| 21 | #include <type_traits> |
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| 22 | |
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| 23 | #include "test_macros.h" |
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| 24 | |
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| 25 | static_assert(std::is_trivially_default_constructible_v<std::nostopstate_t>); |
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| 26 | |
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| 27 | struct Empty {}; |
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| 28 | static_assert(sizeof(Empty) == sizeof(std::nostopstate_t)); |
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| 29 | |
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| 30 | template <class T> |
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| 31 | void conversionTest(T); |
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| 32 | |
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| 33 | template <class T> |
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| 34 | concept ImplicitlyDefaultConstructible = requires { conversionTest<T>({}); }; |
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| 35 | static_assert(!ImplicitlyDefaultConstructible<std::nostopstate_t>); |
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| 36 | |
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| 37 | int main(int, char**) { |
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| 38 | [[maybe_unused]] std::same_as<std::nostopstate_t> auto x = std::nostopstate; |
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| 39 | [[maybe_unused]] auto y = std::nostopstate_t{}; |
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| 40 | |
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| 41 | return 0; |
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| 42 | } |
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| 43 | |
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