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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
//
//===----------------------------------------------------------------------===//
// <memory>
// shared_ptr
// template <class T>
// bool operator==(const shared_ptr<T>& x, nullptr_t) noexcept;
// template <class T>
// bool operator==(nullptr_t, const shared_ptr<T>& y) noexcept;
// template <class T>
// bool operator!=(const shared_ptr<T>& x, nullptr_t) noexcept;
// template <class T>
// bool operator!=(nullptr_t, const shared_ptr<T>& y) noexcept;
// template <class T>
// bool operator<(const shared_ptr<T>& x, nullptr_t) noexcept;
// template <class T>
// bool operator<(nullptr_t, const shared_ptr<T>& y) noexcept;
// template <class T>
// bool operator<=(const shared_ptr<T>& x, nullptr_t) noexcept;
// template <class T>
// bool operator<=(nullptr_t, const shared_ptr<T>& y) noexcept;
// template <class T>
// bool operator>(const shared_ptr<T>& x, nullptr_t) noexcept;
// template <class T>
// bool operator>(nullptr_t, const shared_ptr<T>& y) noexcept;
// template <class T>
// bool operator>=(const shared_ptr<T>& x, nullptr_t) noexcept;
// template <class T>
// bool operator>=(nullptr_t, const shared_ptr<T>& y) noexcept;
// template<class T>
// strong_ordering operator<=>(shared_ptr<T> const& x, nullptr_t) noexcept; // C++20
#include <memory>
#include <cassert>
#include "test_macros.h"
#include "test_comparisons.h"
void do_nothing(int*) {}
int main(int, char**)
{
AssertComparisonsAreNoexcept<std::shared_ptr<int>, nullptr_t>();
AssertComparisonsAreNoexcept<nullptr_t, std::shared_ptr<int> >();
AssertComparisonsReturnBool<std::shared_ptr<int>, nullptr_t>();
AssertComparisonsReturnBool<nullptr_t, std::shared_ptr<int> >();
#if TEST_STD_VER >= 20
AssertOrderAreNoexcept<std::shared_ptr<int>>();
AssertOrderReturn<std::strong_ordering, std::shared_ptr<int>>();
#endif
const std::shared_ptr<int> p1(new int(1));
assert(!(p1 == nullptr));
assert(!(nullptr == p1));
assert(!(p1 < nullptr));
assert((nullptr < p1));
assert(!(p1 <= nullptr));
assert((nullptr <= p1));
assert((p1 > nullptr));
assert(!(nullptr > p1));
assert((p1 >= nullptr));
assert(!(nullptr >= p1));
#if TEST_STD_VER >= 20
assert((nullptr <=> p1) == std::strong_ordering::less);
assert((p1 <=> nullptr) == std::strong_ordering::greater);
#endif
const std::shared_ptr<int> p2;
assert((p2 == nullptr));
assert((nullptr == p2));
assert(!(p2 < nullptr));
assert(!(nullptr < p2));
assert((p2 <= nullptr));
assert((nullptr <= p2));
assert(!(p2 > nullptr));
assert(!(nullptr > p2));
assert((p2 >= nullptr));
assert((nullptr >= p2));
#if TEST_STD_VER >= 20
assert((p2 <=> nullptr) == std::strong_ordering::equivalent);
assert((nullptr <=> p2) == std::strong_ordering::equivalent);
#endif
#if TEST_STD_VER >= 17
const std::shared_ptr<int[]> p3(new int[1]);
assert(!(p3 == nullptr));
assert(!(nullptr == p3));
assert(!(p3 < nullptr));
assert((nullptr < p3));
assert(!(p3 <= nullptr));
assert((nullptr <= p3));
assert((p3 > nullptr));
assert(!(nullptr > p3));
assert((p3 >= nullptr));
assert(!(nullptr >= p3));
# if TEST_STD_VER >= 20
assert((p3 <=> nullptr) == std::strong_ordering::greater);
assert((nullptr <=> p3) == std::strong_ordering::less);
# endif
const std::shared_ptr<int[]> p4;
assert((p4 == nullptr));
assert((nullptr == p4));
assert(!(p4 < nullptr));
assert(!(nullptr < p4));
assert((p4 <= nullptr));
assert((nullptr <= p4));
assert(!(p4 > nullptr));
assert(!(nullptr > p4));
assert((p4 >= nullptr));
assert((nullptr >= p4));
# if TEST_STD_VER >= 20
assert((p4 <=> nullptr) == std::strong_ordering::equivalent);
assert((nullptr <=> p4) == std::strong_ordering::equivalent);
# endif
#endif
return 0;
}
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