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// { dg-options "-std=gnu++11" }
// Copyright (C) 2005-2015 Free Software Foundation, Inc.
//
// 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;
}
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