Howard Hinnant | 8a1df3c | 2013-08-22 17:41:48 +0000 | [diff] [blame] | 1 | //===----------------------------------------------------------------------===// |
| 2 | // |
| 3 | // The LLVM Compiler Infrastructure |
| 4 | // |
| 5 | // This file is dual licensed under the MIT and the University of Illinois Open |
| 6 | // Source Licenses. See LICENSE.TXT for details. |
| 7 | // |
| 8 | //===----------------------------------------------------------------------===// |
| 9 | |
| 10 | // <system_error> |
| 11 | |
| 12 | // class error_category |
| 13 | |
| 14 | // constexpr error_category() noexcept; |
| 15 | |
| 16 | #include <system_error> |
| 17 | #include <type_traits> |
| 18 | #include <string> |
| 19 | #include <cassert> |
| 20 | |
| 21 | #if _LIBCPP_STD_VER > 11 |
| 22 | |
| 23 | class test1 |
| 24 | : public std::error_category |
| 25 | { |
| 26 | public: |
| 27 | constexpr test1() = default; // won't compile if error_category() is not constexpr |
| 28 | virtual const char* name() const noexcept {return nullptr;} |
Dan Albert | 1d4a1ed | 2016-05-25 22:36:09 -0700 | [diff] [blame^] | 29 | virtual std::string message(int ev) const {return std::string();} |
Howard Hinnant | 8a1df3c | 2013-08-22 17:41:48 +0000 | [diff] [blame] | 30 | }; |
| 31 | |
| 32 | #endif // _LIBCPP_STD_VER > 11 |
| 33 | |
| 34 | int main() |
| 35 | { |
| 36 | #if _LIBCPP_STD_VER > 11 |
| 37 | static_assert(std::is_nothrow_default_constructible<test1>::value, |
| 38 | "error_category() must exist and be noexcept"); |
| 39 | #endif // _LIBCPP_STD_VER > 11 |
| 40 | } |