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 // <system_error> 10 11 // class error_code 12 13 // template <ErrorCodeEnum E> error_code(E e); 14 15 // Regression test for https://github.com/llvm/llvm-project/issues/57614 16 17 int make_error_code; // It's important that this comes before <system_error> 18 19 #include <system_error> 20 #include <cassert> 21 #include <type_traits> 22 23 namespace User { 24 enum Err {}; 25 26 std::error_code make_error_code(Err) { return std::error_code(42, std::generic_category()); } 27 } 28 29 template <> 30 struct std::is_error_code_enum<User::Err> : true_type {}; 31 32 int main(int, char**) { 33 std::error_code e((User::Err())); 34 assert(e.value() == 42); 35 assert(e.category() == std::generic_category()); 36 37 return 0; 38 } 39