| //===----------------------------------------------------------------------===// |
| // |
| // 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; |
| } |