blob: 1de366a054af8f773ef0aad26395bf6b0aa38fe0 (
plain)
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
39
40
41
42
|
//===----------------------------------------------------------------------===//
//
// 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++98, c++03, c++11, c++14
// <optional>
// template <class T> constexpr bool operator!=(const optional<T>& x, nullopt_t) noexcept;
// template <class T> constexpr bool operator!=(nullopt_t, const optional<T>& x) noexcept;
#include <optional>
#include "test_macros.h"
int main(int, char**)
{
using std::optional;
using std::nullopt_t;
using std::nullopt;
{
typedef int T;
typedef optional<T> O;
constexpr O o1; // disengaged
constexpr O o2{1}; // engaged
static_assert ( !(nullopt != o1), "" );
static_assert ( (nullopt != o2), "" );
static_assert ( !(o1 != nullopt), "" );
static_assert ( (o2 != nullopt), "" );
static_assert (noexcept(nullopt != o1), "");
static_assert (noexcept(o1 != nullopt), "");
}
return 0;
}
|
