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