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// { dg-options "-std=gnu++0x" }
// Copyright (C) 2010 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/>.
// 20.9.11.2 Class template shared_ptr [util.smartptr.shared]
#include <memory>
#include <cstddef>
#include <testsuite_hooks.h>
#include <testsuite_allocator.h>
// 20.9.11.2.1 shared_ptr constructors [util.smartptr.shared.const]
// Construction from nullptr
struct deleter
{
int count;
deleter() : count(0) { }
void operator()(std::nullptr_t) { ++count; }
void operator()(int*) const { throw "wrong type passed to deleter"; }
};
void
test01()
{
bool test __attribute__((unused)) = true;
std::shared_ptr<int> p = nullptr;
VERIFY( p.get() == nullptr );
VERIFY( p.use_count() == 0 );
}
void
test02()
{
bool test __attribute__((unused)) = true;
deleter d;
std::shared_ptr<int> p(nullptr, std::ref(d));
VERIFY( p.get() == nullptr );
VERIFY( p.use_count() == 1 );
p = nullptr;
VERIFY( p.use_count() == 0 );
VERIFY( d.count == 1 );
}
void
test03()
{
bool test __attribute__((unused)) = true;
deleter d;
__gnu_test::tracker_allocator<int> a;
std::shared_ptr<int> p(nullptr, std::ref(d), a);
VERIFY( p.get() == nullptr );
VERIFY( p.use_count() == 1 );
p = nullptr;
VERIFY( p.use_count() == 0 );
VERIFY( d.count == 1 );
typedef __gnu_test::tracker_allocator_counter c;
VERIFY( c::get_destruct_count() == c::get_construct_count() );
VERIFY( c::get_deallocation_count() == c::get_allocation_count() );
}
int
main()
{
test01();
test02();
test03();
return 0;
}
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