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// UNSUPPORTED: c++03, c++11, c++14
10// <optional>
11
12// template <class T> constexpr bool operator>(const optional<T>& x, nullopt_t) noexcept;
13// template <class T> constexpr bool operator>(nullopt_t, const optional<T>& x) noexcept;
14
15#include <optional>
16
17#include "test_macros.h"
18
19int main(int, char**)
20{
21 using std::optional;
22 using std::nullopt_t;
23 using std::nullopt;
24
25 {
26 typedef int T;
27 typedef optional<T> O;
28
29 constexpr O o1; // disengaged
30 constexpr O o2{1}; // engaged
31
32 static_assert ( !(nullopt > o1), "" );
33 static_assert ( !(nullopt > o2), "" );
34 static_assert ( !(o1 > nullopt), "" );
35 static_assert ( (o2 > nullopt), "" );
36
37 static_assert (noexcept(nullopt > o1), "");
38 static_assert (noexcept(o1 > nullopt), "");
39 }
40
41 return 0;
42}
43

source code of libcxx/test/std/utilities/optional/optional.nullops/greater.pass.cpp