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// struct forward_iterator_tag: public input_iterator_tag {}; 13bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant 14bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant#include <iterator> 15bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant#include <type_traits> 16bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant 17bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnantint main() 18bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant{ 19bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant std::forward_iterator_tag tag; 20bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant static_assert((std::is_base_of<std::input_iterator_tag, 21bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant std::forward_iterator_tag>::value), ""); 22bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant static_assert((!std::is_base_of<std::output_iterator_tag, 23bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant std::forward_iterator_tag>::value), ""); 24bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant} 25