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//===----------------------------------------------------------------------===//
//
// 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 -D_LIBCPP_ENABLE_CXX03_FUNCTION
#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;
}
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