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 // <memory>
11 
12 // template <class T>
13 // struct pointer_traits<T*>
14 // {
15 //     typedef ptrdiff_t difference_type;
16 //     ...
17 // };
18 
19 #include <memory>
20 #include <type_traits>
21 
main()22 int main()
23 {
24     static_assert((std::is_same<std::pointer_traits<double*>::difference_type, std::ptrdiff_t>::value), "");
25 }
26