// { dg-do run { target c++11 } }
// { dg-require-effective-target hosted }
// Copyright (C) 2006-2023 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
// .
// 20.6.6.2.10 shared_ptr casts [util.smartptr.shared.cast]
#include
#include
#include
struct MyP { virtual ~MyP() { }; };
struct MyDP : MyP { };
void
test01()
{
using __gnu_test::check_ret_type;
using std::shared_ptr;
using std::static_pointer_cast;
using std::const_pointer_cast;
using std::dynamic_pointer_cast;
shared_ptr spd;
shared_ptr spci;
shared_ptr spa;
check_ret_type>(static_pointer_cast(spd));
check_ret_type>(const_pointer_cast(spci));
// Non-polymorphic dynamic_cast works without RTTI.
check_ret_type>(dynamic_pointer_cast(spa));
#if __cpp_rtti
// But polymorphic dynamic_cast needs RTTI.
check_ret_type>(dynamic_pointer_cast(spa));
#endif
}
void
test02()
{
using std::shared_ptr;
using std::static_pointer_cast;
using std::const_pointer_cast;
using std::dynamic_pointer_cast;
int* ptr = new int(1);
shared_ptr pcv(ptr);
auto pci = static_pointer_cast(pcv);
VERIFY(pci.use_count() == 2);
VERIFY(pcv.use_count() == 2);
VERIFY(pci.get() == ptr);
VERIFY(pcv.get() == ptr);
auto pi = const_pointer_cast(pci);
VERIFY(pi.use_count() == 3);
VERIFY(pcv.use_count() == 3);
VERIFY(pi.get() == ptr);
VERIFY(pci.get() == ptr);
#if __cpp_rtti
MyP* pptr = new MyP;
shared_ptr pp(pptr);
auto pdp = dynamic_pointer_cast(pp);
VERIFY(pp.use_count() == 1);
VERIFY(pdp.use_count() == 0);
VERIFY(pdp.get() == nullptr);
VERIFY(pp.get() == pptr);
pptr = new MyDP;
pp.reset(pptr);
pdp = dynamic_pointer_cast(pp);
VERIFY(pp.use_count() == 2);
VERIFY(pdp.use_count() == 2);
VERIFY(pdp.get() == pptr);
VERIFY(pp.get() == pptr);
#endif
}
int main()
{
test01();
test02();
}