| // { dg-options "-std=gnu++2a" } |
| // { dg-do run { target c++2a } } |
| |
| // Copyright (C) 2019 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/>. |
| |
| // shared_ptr casts [util.smartptr.shared.cast] |
| |
| #include <memory> |
| #include <testsuite_hooks.h> |
| #include <testsuite_tr1.h> |
| |
| 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; |
| using std::reinterpret_pointer_cast; |
| |
| shared_ptr<double> spd; |
| shared_ptr<const int> spci; |
| shared_ptr<MyP> spa; |
| |
| check_ret_type<shared_ptr<void>>(static_pointer_cast<void>(std::move(spd))); |
| check_ret_type<shared_ptr<int>>(const_pointer_cast<int>(std::move(spci))); |
| check_ret_type<shared_ptr<MyDP>>(dynamic_pointer_cast<MyDP>(std::move(spa))); |
| check_ret_type<shared_ptr<void>>(reinterpret_pointer_cast<void>(std::move(spd))); |
| check_ret_type<shared_ptr<const short>>(reinterpret_pointer_cast<const short>(std::move(spci))); |
| check_ret_type<shared_ptr<MyDP>>(reinterpret_pointer_cast<MyDP>(std::move(spa))); |
| } |
| |
| void |
| test02() |
| { |
| using std::shared_ptr; |
| using std::static_pointer_cast; |
| using std::const_pointer_cast; |
| using std::dynamic_pointer_cast; |
| using std::reinterpret_pointer_cast; |
| |
| int* ptr = new int(1); |
| shared_ptr<const void> pcv(ptr); |
| auto pci = static_pointer_cast<const int>(std::move(pcv)); |
| VERIFY(pci.use_count() == 1); |
| VERIFY(pcv.use_count() == 0); |
| VERIFY(pci.get() == ptr); |
| VERIFY(pcv.get() == nullptr); |
| auto pi = const_pointer_cast<int>(std::move(pci)); |
| VERIFY(pi.use_count() == 1); |
| VERIFY(pci.use_count() == 0); |
| VERIFY(pi.get() == ptr); |
| VERIFY(pci.get() == nullptr); |
| |
| MyP* pptr = new MyP; |
| shared_ptr<MyP> pp(pptr); |
| auto pdp = dynamic_pointer_cast<MyDP>(std::move(pp)); |
| VERIFY(pdp.use_count() == 0); |
| VERIFY(pp.use_count() == 1); |
| VERIFY(pdp.get() == nullptr); |
| VERIFY(pp.get() == pptr); |
| pptr = new MyDP; |
| pp.reset(pptr); |
| pdp = dynamic_pointer_cast<MyDP>(std::move(pp)); |
| VERIFY(pdp.use_count() == 1); |
| VERIFY(pp.use_count() == 0); |
| VERIFY(pdp.get() == pptr); |
| VERIFY(pp.get() == nullptr); |
| |
| ptr = new int(2); |
| pi.reset(ptr); |
| auto pl = reinterpret_pointer_cast<long>(std::move(pi)); |
| VERIFY(pl.use_count() == 1); |
| VERIFY(pi.use_count() == 0); |
| VERIFY(reinterpret_cast<int*>(pl.get()) == ptr); |
| VERIFY(pi.get() == nullptr); |
| } |
| |
| int main() |
| { |
| test01(); |
| test02(); |
| } |