65a1efc60c
This was causing compilation errors when attempting to compare a `shared_ptr<T[]>` with `nullptr`, as `get()` returns `T*` rather than `T (*)[]`. `unique_ptr` did not have this issue, but I've added tests to make sure.
142 lines
5.1 KiB
C++
142 lines
5.1 KiB
C++
//===----------------------------------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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// <memory>
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// unique_ptr
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// template <class T, class D>
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// constexpr bool operator==(const unique_ptr<T, D>& x, nullptr_t) noexcept; // constexpr since C++23
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// template <class T, class D>
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// bool operator==(nullptr_t, const unique_ptr<T, D>& y) noexcept; // removed in C++20
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// template <class T, class D>
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// bool operator!=(const unique_ptr<T, D>& x, nullptr_t) noexcept; // removed in C++20
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// template <class T, class D>
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// bool operator!=(nullptr_t, const unique_ptr<T, D>& y) noexcept; // removed in C++20
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// template <class T, class D>
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// constexpr bool operator<(const unique_ptr<T, D>& x, nullptr_t); // constexpr since C++23
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// template <class T, class D>
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// constexpr bool operator<(nullptr_t, const unique_ptr<T, D>& y); // constexpr since C++23
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// template <class T, class D>
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// constexpr bool operator<=(const unique_ptr<T, D>& x, nullptr_t); // constexpr since C++23
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// template <class T, class D>
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// constexpr bool operator<=(nullptr_t, const unique_ptr<T, D>& y); // constexpr since C++23
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// template <class T, class D>
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// constexpr bool operator>(const unique_ptr<T, D>& x, nullptr_t); // constexpr since C++23
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// template <class T, class D>
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// constexpr bool operator>(nullptr_t, const unique_ptr<T, D>& y); // constexpr since C++23
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// template <class T, class D>
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// constexpr bool operator>=(const unique_ptr<T, D>& x, nullptr_t); // constexpr since C++23
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// template <class T, class D>
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// constexpr bool operator>=(nullptr_t, const unique_ptr<T, D>& y); // constexpr since C++23
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// template<class T, class D>
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// requires three_way_comparable<typename unique_ptr<T, D>::pointer>
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// constexpr compare_three_way_result_t<typename unique_ptr<T, D>::pointer>
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// operator<=>(const unique_ptr<T, D>& x, nullptr_t); // C++20
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#include <memory>
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#include <cassert>
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#include <type_traits>
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#include "test_macros.h"
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#include "test_comparisons.h"
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TEST_CONSTEXPR_CXX23 bool test() {
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if (!TEST_IS_CONSTANT_EVALUATED) {
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AssertEqualityAreNoexcept<std::unique_ptr<int>, nullptr_t>();
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AssertEqualityAreNoexcept<nullptr_t, std::unique_ptr<int> >();
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AssertComparisonsReturnBool<std::unique_ptr<int>, nullptr_t>();
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AssertComparisonsReturnBool<nullptr_t, std::unique_ptr<int> >();
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#if TEST_STD_VER >= 20
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AssertOrderReturn<std::strong_ordering, std::unique_ptr<int>, nullptr_t>();
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AssertOrderReturn<std::strong_ordering, nullptr_t, std::unique_ptr<int>>();
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#endif
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}
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const std::unique_ptr<int> p1(new int(1));
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assert(!(p1 == nullptr));
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assert(!(nullptr == p1));
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// A pointer to allocated storage and a nullptr can't be compared at compile-time
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if (!TEST_IS_CONSTANT_EVALUATED) {
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assert(!(p1 < nullptr));
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assert((nullptr < p1));
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assert(!(p1 <= nullptr));
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assert((nullptr <= p1));
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assert((p1 > nullptr));
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assert(!(nullptr > p1));
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assert((p1 >= nullptr));
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assert(!(nullptr >= p1));
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#if TEST_STD_VER >= 20
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assert((p1 <=> nullptr) == std::strong_ordering::greater);
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assert((nullptr <=> p1) == std::strong_ordering::less);
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#endif
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}
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const std::unique_ptr<int> p2;
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assert((p2 == nullptr));
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assert((nullptr == p2));
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assert(!(p2 < nullptr));
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assert(!(nullptr < p2));
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assert((p2 <= nullptr));
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assert((nullptr <= p2));
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assert(!(p2 > nullptr));
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assert(!(nullptr > p2));
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assert((p2 >= nullptr));
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assert((nullptr >= p2));
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#if TEST_STD_VER >= 20
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assert((p2 <=> nullptr) == std::strong_ordering::equivalent);
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assert((nullptr <=> p2) == std::strong_ordering::equivalent);
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#endif
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const std::unique_ptr<int[]> p3(new int[1]);
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assert(!(p3 == nullptr));
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assert(!(nullptr == p3));
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// A pointer to allocated storage and a nullptr can't be compared at compile-time
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if (!TEST_IS_CONSTANT_EVALUATED) {
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assert(!(p3 < nullptr));
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assert((nullptr < p3));
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assert(!(p3 <= nullptr));
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assert((nullptr <= p3));
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assert((p3 > nullptr));
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assert(!(nullptr > p3));
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assert((p3 >= nullptr));
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assert(!(nullptr >= p3));
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#if TEST_STD_VER >= 20
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assert((nullptr <=> p3) == std::strong_ordering::less);
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assert((p3 <=> nullptr) == std::strong_ordering::greater);
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#endif
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}
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const std::unique_ptr<int[]> p4;
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assert((p4 == nullptr));
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assert((nullptr == p4));
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assert(!(p4 < nullptr));
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assert(!(nullptr < p4));
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assert((p4 <= nullptr));
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assert((nullptr <= p4));
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assert(!(p4 > nullptr));
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assert(!(nullptr > p4));
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assert((p4 >= nullptr));
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assert((nullptr >= p4));
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#if TEST_STD_VER >= 20
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assert((p4 <=> nullptr) == std::strong_ordering::equivalent);
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assert((nullptr <=> p4) == std::strong_ordering::equivalent);
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#endif
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return true;
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}
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int main(int, char**) {
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test();
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#if TEST_STD_VER >= 23
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static_assert(test());
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#endif
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return 0;
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}
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