40 lines · cpp
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-exception6//7//===----------------------------------------------------------------------===//8 9// <system_error>10 11// class error_code12 13// template <ErrorCodeEnum E> error_code& operator=(E e);14 15// Regression test for https://llvm.org/PR5761416 17int 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 23namespace User {24 enum Err {};25 26 std::error_code make_error_code(Err) { return std::error_code(42, std::generic_category()); }27}28 29template <>30struct std::is_error_code_enum<User::Err> : true_type {};31 32int main(int, char**) {33 std::error_code e;34 e = User::Err();35 assert(e.value() == 42);36 assert(e.category() == std::generic_category());37 38 return 0;39}40