| 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: c++03, c++11 |
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| 10 | // <system_error> |
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| 11 | |
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| 12 | // class error_category |
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| 13 | |
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| 14 | // constexpr error_category() noexcept; |
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| 15 | |
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| 16 | #include <system_error> |
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| 17 | #include <type_traits> |
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| 18 | #include <string> |
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| 19 | #include <cassert> |
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| 20 | |
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| 21 | #include "test_macros.h" |
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| 22 | |
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| 23 | class test1 |
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| 24 | : public std::error_category |
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| 25 | { |
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| 26 | public: |
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| 27 | constexpr test1() = default; // won't compile if error_category() is not constexpr |
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| 28 | virtual const char* name() const noexcept {return nullptr;} |
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| 29 | virtual std::string message(int) const {return std::string();} |
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| 30 | }; |
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| 31 | |
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| 32 | int main(int, char**) |
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| 33 | { |
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| 34 | static_assert(std::is_nothrow_default_constructible<test1>::value, |
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| 35 | "error_category() must exist and be noexcept" ); |
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| 36 | |
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| 37 | return 0; |
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| 38 | } |
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| 39 | |
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