| // { dg-options "-std=gnu++0x" } |
| |
| // Copyright (C) 2005, 2006, 2007, 2008, 2009 Free Software Foundation |
| // |
| // This file is part of the GNU ISO C++ Library. This library is free |
| // software; you can redistribute it and/or modify it under the |
| // terms of the GNU General Public License as published by the |
| // Free Software Foundation; either version 3, or (at your option) |
| // any later version. |
| |
| // This library is distributed in the hope that it will be useful, |
| // but WITHOUT ANY WARRANTY; without even the implied warranty of |
| // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| // GNU General Public License for more details. |
| |
| // You should have received a copy of the GNU General Public License along |
| // with this library; see the file COPYING3. If not see |
| // <http://www.gnu.org/licenses/>. |
| |
| // 20.6.6.2 Template class shared_ptr [util.smartptr.shared] |
| |
| #include <memory> |
| #include <testsuite_hooks.h> |
| |
| struct A { }; |
| struct B : A { }; |
| |
| // 20.6.6.2.5 shared_ptr observers [util.smartptr.shared.obs] |
| |
| // use_count |
| void |
| test01() |
| { |
| bool test __attribute__((unused)) = true; |
| |
| const std::shared_ptr<A> p1; |
| VERIFY( p1.use_count() == 0 ); |
| const std::shared_ptr<A> p2(p1); |
| VERIFY( p1.use_count() == 0 ); |
| } |
| |
| void |
| test02() |
| { |
| bool test __attribute__((unused)) = true; |
| |
| std::shared_ptr<A> p1(new A); |
| std::shared_ptr<A> p2(p1); |
| p1.reset(); |
| VERIFY( p1.use_count() == 0 ); |
| VERIFY( p2.use_count() == 1 ); |
| } |
| |
| void |
| test03() |
| { |
| bool test __attribute__((unused)) = true; |
| |
| std::shared_ptr<A> p1(new A); |
| std::shared_ptr<A> p2(p1); |
| p2.reset(new B); |
| VERIFY( p1.use_count() == 1 ); |
| VERIFY( p2.use_count() == 1 ); |
| } |
| |
| |
| int |
| main() |
| { |
| test01(); |
| test02(); |
| test03(); |
| return 0; |
| } |