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// { dg-do run { target c++11 } }
// { dg-require-effective-target hosted }
// Copyright (C) 2008-2024 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/>.
// 20.7.12.2 Template class shared_ptr [util.smartptr.shared]
#include <memory>
#include <testsuite_hooks.h>
struct A { };
struct D {
void operator()(A* p) const { delete p; ++count; }
static int count;
};
int D::count = 0;
// 20.7.12.2.1 shared_ptr constructors [util.smartptr.shared.const]
// Construction from unique_ptr
void
test01()
{
std::unique_ptr<A, D> up(new A, D());
{
std::shared_ptr<A> sp(std::move(up));
VERIFY( up.get() == 0 );
VERIFY( sp.get() != 0 );
VERIFY( sp.use_count() == 1 );
}
VERIFY( D::count == 1 );
}
void
test02()
{
D::count = 0;
std::unique_ptr<A, D> up;
{
std::shared_ptr<A> sp = std::move(up);
}
VERIFY( D::count == 0 ); // LWG 2415
}
void
test03()
{
struct D
{
D() = default;
D(const D&) = delete; // not copyable or movable
void operator()(int* p) const { delete p; }
};
using namespace std;
static_assert( ! is_constructible<shared_ptr<int>, unique_ptr<int, D>>(),
"Constraints: is_move_constructible_v<D> is true" );
}
int
main()
{
test01();
test02();
test03();
}
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