1//===----------------------------------------------------------------------===//
2//
3//                     The LLVM Compiler Infrastructure
4//
5// This file is dual licensed under the MIT and the University of Illinois Open
6// Source Licenses. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9
10// <iterator>
11
12// template<class T>
13// struct iterator_traits<T*>
14// {
15//   typedef ptrdiff_t                  difference_type;
16//   typedef T                          value_type;
17//   typedef T*                         pointer;
18//   typedef T&                         reference;
19//   typedef random_access_iterator_tag iterator_category;
20// };
21
22#include <iterator>
23#include <type_traits>
24
25struct A {};
26
27int main()
28{
29    typedef std::iterator_traits<A*> It;
30    static_assert((std::is_same<It::difference_type, std::ptrdiff_t>::value), "");
31    static_assert((std::is_same<It::value_type, A>::value), "");
32    static_assert((std::is_same<It::pointer, A*>::value), "");
33    static_assert((std::is_same<It::reference, A&>::value), "");
34    static_assert((std::is_same<It::iterator_category, std::random_access_iterator_tag>::value), "");
35}
36