| //===----------------------------------------------------------------------===// |
| // |
| // 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 |
| // |
| //===----------------------------------------------------------------------===// |
| |
| // <functional> |
| |
| // class function<R(ArgTypes...)> |
| |
| // template <MoveConstructible R, MoveConstructible ... ArgTypes> |
| // bool operator==(const function<R(ArgTypes...)>&, nullptr_t); |
| // |
| // template <MoveConstructible R, MoveConstructible ... ArgTypes> |
| // bool operator==(nullptr_t, const function<R(ArgTypes...)>&); |
| // |
| // template <MoveConstructible R, MoveConstructible ... ArgTypes> |
| // bool operator!=(const function<R(ArgTypes...)>&, nullptr_t); |
| // |
| // template <MoveConstructible R, MoveConstructible ... ArgTypes> |
| // bool operator!=(nullptr_t, const function<R(ArgTypes...)>&); |
| |
| // This test runs in C++03, but we have deprecated using std::function in C++03. |
| // ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS |
| |
| #include <functional> |
| #include <cassert> |
| |
| #include "test_macros.h" |
| |
| int g(int) {return 0;} |
| |
| int main(int, char**) |
| { |
| { |
| std::function<int(int)> f; |
| assert(f == nullptr); |
| assert(nullptr == f); |
| f = g; |
| assert(f != nullptr); |
| assert(nullptr != f); |
| } |
| |
| return 0; |
| } |