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[/] [openrisc/] [trunk/] [gnu-src/] [gcc-4.5.1/] [libstdc++-v3/] [testsuite/] [tr1/] [2_general_utilities/] [shared_ptr/] [observers/] [use_count.cc] - Rev 424
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// Copyright (C) 2005, 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/>. // TR1 2.2.2 Template class shared_ptr [tr.util.smartptr.shared] #include <tr1/memory> #include <testsuite_hooks.h> struct A { }; struct B : A { }; // 2.2.3.5 shared_ptr observers [tr.util.smartptr.shared.obs] // use_count int test01() { bool test __attribute__((unused)) = true; const std::tr1::shared_ptr<A> p1; VERIFY( p1.use_count() == 0 ); const std::tr1::shared_ptr<A> p2(p1); VERIFY( p1.use_count() == 0 ); return 0; } int test02() { bool test __attribute__((unused)) = true; std::tr1::shared_ptr<A> p1(new A); std::tr1::shared_ptr<A> p2(p1); p1.reset(); VERIFY( p1.use_count() == 0 ); VERIFY( p2.use_count() == 1 ); return 0; } int test03() { bool test __attribute__((unused)) = true; std::tr1::shared_ptr<A> p1(new A); std::tr1::shared_ptr<A> p2(p1); p2.reset(new B); VERIFY( p1.use_count() == 1 ); VERIFY( p2.use_count() == 1 ); return 0; } int main() { test01(); test02(); test03(); return 0; }