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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>
// Check that the nested types of std::allocator are provided:
// template <class T>
// class allocator
// {
// public:
// typedef size_t size_type;
// typedef ptrdiff_t difference_type;
// typedef T value_type;
//
// typedef T* pointer; // deprecated in C++17, removed in C++20
// typedef T const* const_pointer; // deprecated in C++17, removed in C++20
// typedef T& reference; // deprecated in C++17, removed in C++20
// typedef T const& const_reference; // deprecated in C++17, removed in C++20
// template< class U > struct rebind { typedef allocator<U> other; }; // deprecated in C++17, removed in C++20
//
// typedef true_type propagate_on_container_move_assignment;
// typedef true_type is_always_equal;
// ...
// };
// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
#include <memory>
#include <type_traits>
#include <cstddef>
#include "test_macros.h"
struct U;
template <typename T>
void test() {
typedef std::allocator<T> Alloc;
static_assert((std::is_same<typename Alloc::size_type, std::size_t>::value), "");
static_assert((std::is_same<typename Alloc::difference_type, std::ptrdiff_t>::value), "");
static_assert((std::is_same<typename Alloc::value_type, T>::value), "");
static_assert((std::is_same<typename Alloc::propagate_on_container_move_assignment, std::true_type>::value), "");
static_assert((std::is_same<typename Alloc::is_always_equal, std::true_type>::value), "");
#if TEST_STD_VER <= 17
static_assert((std::is_same<typename Alloc::pointer, T*>::value), "");
static_assert((std::is_same<typename Alloc::const_pointer, T const*>::value), "");
static_assert((std::is_same<typename Alloc::reference, T&>::value), "");
static_assert((std::is_same<typename Alloc::const_reference, T const&>::value), "");
static_assert((std::is_same<typename Alloc::template rebind<U>::other, std::allocator<U> >::value), "");
#endif
}
int main(int, char**) {
test<char>();
#ifdef _LIBCPP_VERSION
test<char const>(); // extension
#endif
return 0;
}
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