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// weak_ptr 13c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnant 1401208afbd62ed67b33424e8b9bf0477b992bc1b8Marshall Clow// template<class U> bool owner_before(const weak_ptr<U>& b) const noexcept; 15c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnant 16c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnant#include <memory> 17c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnant#include <cassert> 1801208afbd62ed67b33424e8b9bf0477b992bc1b8Marshall Clow#include "test_macros.h" 19c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnant 20c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnantint main() 21c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnant{ 22c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnant const std::shared_ptr<int> p1(new int); 23c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnant const std::shared_ptr<int> p2 = p1; 24c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnant const std::shared_ptr<int> p3(new int); 25c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnant const std::weak_ptr<int> w1(p1); 26c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnant const std::weak_ptr<int> w2(p2); 27c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnant const std::weak_ptr<int> w3(p3); 28c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnant assert(!w1.owner_before(w2)); 29c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnant assert(!w2.owner_before(w1)); 30c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnant assert(w1.owner_before(w3) || w3.owner_before(w1)); 31c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnant assert(w3.owner_before(w1) == w3.owner_before(w2)); 324876a73b0a667032d66cee0e8e4d4a5d4083bf3bEric Fiselier ASSERT_NOEXCEPT(w1.owner_before(w2)); 33c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnant} 34