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 Alloc> 13c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnant// struct allocator_traits 14c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnant// { 15c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnant// typedef Alloc::pointer | value_type* pointer; 16c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnant// ... 17c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnant// }; 18c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnant 19c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnant#include <memory> 20c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnant#include <type_traits> 21c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnant 22c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnanttemplate <class T> 23c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnantstruct Ptr {}; 24c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnant 25c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnanttemplate <class T> 26c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnantstruct A 27c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnant{ 28c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnant typedef T value_type; 29c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnant typedef Ptr<T> pointer; 30c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnant}; 31c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnant 32c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnanttemplate <class T> 33c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnantstruct B 34c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnant{ 35c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnant typedef T value_type; 36c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnant}; 37c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnant 38c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnantint main() 39c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnant{ 40c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnant static_assert((std::is_same<std::allocator_traits<A<char> >::pointer, Ptr<char> >::value), ""); 41c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnant static_assert((std::is_same<std::allocator_traits<B<char> >::pointer, char*>::value), ""); 42c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnant} 43