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#include <system_error>
16#include <cassert>
17#include <type_traits>
18
19#include "test_macros.h"
20
21enum testing
22{
23 zero, one, two
24};
25
26namespace std
27{
28
29template <> struct is_error_code_enum<testing> : public std::true_type {};
30
31}
32
33std::error_code
34make_error_code(testing x)
35{
36 return std::error_code(static_cast<int>(x), std::generic_category());
37}
38
39int main(int, char**)
40{
41 {
42 std::error_code ec(two);
43 assert(ec.value() == 2);
44 assert(ec.category() == std::generic_category());
45 }
46
47 return 0;
48}
49

source code of libcxx/test/std/diagnostics/syserr/syserr.errcode/syserr.errcode.constructors/ErrorCodeEnum.pass.cpp