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<const T*>
14 // {
15 // typedef ptrdiff_t difference_type;
16 // typedef T value_type;
17 // typedef const T* pointer;
18 // typedef const T& reference;
19 // typedef random_access_iterator_tag iterator_category;
20 // };
21
22 #include <iterator>
23 #include <type_traits>
24
25 struct A {};
26
main()27 int main()
28 {
29 typedef std::iterator_traits<const 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, const A*>::value), "");
33 static_assert((std::is_same<It::reference, const A&>::value), "");
34 static_assert((std::is_same<It::iterator_category, std::random_access_iterator_tag>::value), "");
35 }
36