File: default_ctor.pass.cpp

package info (click to toggle)
llvm-toolchain-20 1%3A20.1.6-1~exp1
  • links: PTS, VCS
  • area: main
  • in suites: experimental
  • size: 2,111,304 kB
  • sloc: cpp: 7,438,677; ansic: 1,393,822; asm: 1,012,926; python: 241,650; f90: 86,635; objc: 75,479; lisp: 42,144; pascal: 17,286; sh: 10,027; ml: 5,082; perl: 4,730; awk: 3,523; makefile: 3,349; javascript: 2,251; xml: 892; fortran: 672
file content (38 lines) | stat: -rw-r--r-- 1,064 bytes parent folder | download | duplicates (23) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
 
//===----------------------------------------------------------------------===//
//
// 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++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;
}