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 22int main() 23{ 24 static_assert((std::is_same<std::pointer_traits<double*>::difference_type, std::ptrdiff_t>::value), ""); 25} 26