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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
//
//===----------------------------------------------------------------------===//
// <iterator>
// template<class T>
// struct iterator_traits<T*>
// {
// typedef ptrdiff_t difference_type;
// typedef T value_type;
// typedef T* pointer;
// typedef T& reference;
// typedef random_access_iterator_tag iterator_category;
// typedef contiguous_iterator_tag iterator_category; // C++20
// };
#include <iterator>
#include <type_traits>
#include "test_macros.h"
struct A {};
int main(int, char**)
{
typedef std::iterator_traits<A*> It;
static_assert((std::is_same<It::difference_type, std::ptrdiff_t>::value), "");
static_assert((std::is_same<It::value_type, A>::value), "");
static_assert((std::is_same<It::pointer, A*>::value), "");
static_assert((std::is_same<It::reference, A&>::value), "");
static_assert((std::is_same<It::iterator_category, std::random_access_iterator_tag>::value), "");
#if TEST_STD_VER > 17
ASSERT_SAME_TYPE(It::iterator_concept, std::contiguous_iterator_tag);
#endif
return 0;
}
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