1c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnant//===----------------------------------------------------------------------===// 2c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnant// 3c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnant// The LLVM Compiler Infrastructure 4c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnant// 5b64f8b07c104c6cc986570ac8ee0ed16a9f23976Howard Hinnant// This file is dual licensed under the MIT and the University of Illinois Open 6b64f8b07c104c6cc986570ac8ee0ed16a9f23976Howard Hinnant// Source Licenses. See LICENSE.TXT for details. 7c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnant// 8c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnant//===----------------------------------------------------------------------===// 9c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnant 10c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnant// <memory> 11c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnant 12c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnant// template <class Ptr> 13c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnant// struct pointer_traits 14c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnant// { 15c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnant// typedef <details> element_type; 16c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnant// ... 17c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnant// }; 18c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnant 19c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnant#include <memory> 20c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnant#include <type_traits> 21c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnant 22c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnantstruct A 23c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnant{ 24c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnant typedef char element_type; 25c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnant}; 26c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnant 27c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnanttemplate <class T> 28c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnantstruct B 29c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnant{ 30c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnant typedef char element_type; 31c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnant}; 32c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnant 33c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnanttemplate <class T> 34c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnantstruct C 35c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnant{ 36c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnant}; 37c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnant 38c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnanttemplate <class T, class U> 39c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnantstruct D 40c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnant{ 41c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnant}; 42c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnant 43c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnantint main() 44c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnant{ 45c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnant static_assert((std::is_same<std::pointer_traits<A>::element_type, char>::value), ""); 46c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnant static_assert((std::is_same<std::pointer_traits<B<int> >::element_type, char>::value), ""); 47c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnant static_assert((std::is_same<std::pointer_traits<C<int> >::element_type, int>::value), ""); 48c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnant static_assert((std::is_same<std::pointer_traits<D<double, int> >::element_type, double>::value), ""); 49c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnant} 50