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// <functional> 11c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnant 12c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnant// reference_wrapper 13c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnant 14c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnant// template <ObjectType T> reference_wrapper<T> ref(reference_wrapper<T>t); 15c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnant 16c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnant#include <functional> 17c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnant#include <cassert> 18c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnant 19c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnantint main() 20c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnant{ 21c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnant int i = 0; 22c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnant std::reference_wrapper<int> r1 = std::ref(i); 23c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnant std::reference_wrapper<int> r2 = std::ref(r1); 24c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnant assert(&r2.get() == &i); 25c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnant} 26