| // { dg-options "-std=gnu++11" } |
| |
| // Copyright (C) 2013-2014 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/>. |
| |
| #include <memory> |
| #include <ext/pointer.h> |
| #include <testsuite_hooks.h> |
| |
| struct X : public std::enable_shared_from_this<X> { }; |
| |
| void test01() |
| { |
| std::unique_ptr<X> up(new X); |
| X* xp = up.get(); |
| std::shared_ptr<X> sp(std::move(up)); |
| VERIFY( xp->shared_from_this() != nullptr ); |
| } |
| |
| using __gnu_cxx::_Pointer_adapter; |
| using __gnu_cxx::_Std_pointer_impl; |
| |
| struct Deleter |
| { |
| struct pointer : _Pointer_adapter<_Std_pointer_impl<X>> |
| { |
| using _Pointer_adapter::_Pointer_adapter; |
| operator X*() const noexcept { return this->get(); } |
| }; |
| |
| void operator()(pointer p) const noexcept { delete (X*)p; } |
| }; |
| |
| void test02() |
| { |
| std::unique_ptr<X, Deleter> up(new X); |
| Deleter::pointer xp = up.get(); |
| // Creating shared_ptr from unique_ptr with custom pointer is an extension: |
| std::shared_ptr<X> sp(std::move(up)); |
| // but enable_shared_from_this should still work: |
| VERIFY( xp->shared_from_this() != nullptr ); |
| } |
| |
| int main() |
| { |
| test01(); |
| test02(); |
| } |