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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 following types are provided regardless of the Standard when
// we request them from libc++.
// template <class T>
// class allocator
// {
// public:
// typedef size_t size_type;
// typedef ptrdiff_t difference_type;
// typedef T* pointer;
// typedef const T* const_pointer;
// typedef typename add_lvalue_reference<T>::type reference;
// typedef typename add_lvalue_reference<const T>::type const_reference;
//
// template <class U> struct rebind {typedef allocator<U> other;};
// ...
// };
// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_ENABLE_CXX20_REMOVED_ALLOCATOR_MEMBERS
// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
#include <memory>
#include <type_traits>
#include <cstddef>
template <class T>
void test() {
static_assert((std::is_same<typename std::allocator<T>::size_type, std::size_t>::value), "");
static_assert((std::is_same<typename std::allocator<T>::difference_type, std::ptrdiff_t>::value), "");
static_assert((std::is_same<typename std::allocator<T>::pointer, T*>::value), "");
static_assert((std::is_same<typename std::allocator<T>::const_pointer, const T*>::value), "");
static_assert((std::is_same<typename std::allocator<T>::reference, T&>::value), "");
static_assert((std::is_same<typename std::allocator<T>::const_reference, const T&>::value), "");
static_assert((std::is_same<typename std::allocator<T>::template rebind<int>::other,
std::allocator<int> >::value), "");
}
int main(int, char**) {
test<char>();
return 0;
}
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