1bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant//===----------------------------------------------------------------------===// 2bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant// 3f5256e16dfc425c1d466f6308d4026d529ce9e0bHoward Hinnant// The LLVM Compiler Infrastructure 4bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard 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. 7bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant// 8bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant//===----------------------------------------------------------------------===// 9bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant 10bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant// <iterator> 11bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant 12bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant// template<class T> 13bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant// struct iterator_traits<T*> 14bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant// { 15bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant// typedef ptrdiff_t difference_type; 16bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant// typedef T value_type; 17bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant// typedef T* pointer; 18bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant// typedef T& reference; 19bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant// typedef random_access_iterator_tag iterator_category; 20bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant// }; 21712522cfd8f61321b4f197ec0de02b0146afb5a5Howard Hinnant 22bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant#include <iterator> 23bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant#include <type_traits> 24bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant 25bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnantstruct A {}; 26bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant 27bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnantint main() 28bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant{ 29bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant typedef std::iterator_traits<A*> It; 30bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant static_assert((std::is_same<It::difference_type, std::ptrdiff_t>::value), ""); 31bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant static_assert((std::is_same<It::value_type, A>::value), ""); 32bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant static_assert((std::is_same<It::pointer, A*>::value), ""); 33bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant static_assert((std::is_same<It::reference, A&>::value), ""); 34bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant static_assert((std::is_same<It::iterator_category, std::random_access_iterator_tag>::value), ""); 35bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant} 36