| //===----------------------------------------------------------------------===// |
| // |
| // 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++98, c++03, c++11 |
| // <system_error> |
| |
| // class error_category |
| |
| // constexpr error_category() noexcept; |
| |
| #include <system_error> |
| #include <type_traits> |
| #include <string> |
| #include <cassert> |
| |
| #include "test_macros.h" |
| |
| class test1 |
| : public std::error_category |
| { |
| public: |
| constexpr test1() = default; // won't compile if error_category() is not constexpr |
| virtual const char* name() const noexcept {return nullptr;} |
| virtual std::string message(int) const {return std::string();} |
| }; |
| |
| int main(int, char**) |
| { |
| static_assert(std::is_nothrow_default_constructible<test1>::value, |
| "error_category() must exist and be noexcept"); |
| |
| return 0; |
| } |