1//===----------------------------------------------------------------------===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8
9// <iterator>
10
11// template<class T>
12// struct iterator_traits<const T*>
13// {
14// typedef ptrdiff_t difference_type;
15// typedef T value_type;
16// typedef const T* pointer;
17// typedef const T& reference;
18// typedef random_access_iterator_tag iterator_category;
19// };
20
21#include <iterator>
22#include <type_traits>
23
24#include "test_macros.h"
25
26struct A {};
27
28int main(int, char**)
29{
30 typedef std::iterator_traits<const A*> It;
31 static_assert((std::is_same<It::difference_type, std::ptrdiff_t>::value), "");
32 static_assert((std::is_same<It::value_type, A>::value), "");
33 static_assert((std::is_same<It::pointer, const A*>::value), "");
34 static_assert((std::is_same<It::reference, const A&>::value), "");
35 static_assert((std::is_same<It::iterator_category, std::random_access_iterator_tag>::value), "");
36
37#if TEST_STD_VER > 17
38 ASSERT_SAME_TYPE(It::iterator_concept, std::contiguous_iterator_tag);
39#endif
40
41 return 0;
42}
43

source code of libcxx/test/std/iterators/iterator.primitives/iterator.traits/const_pointer.pass.cpp