| // { dg-options "-Wno-deprecated" } |
| // { dg-add-options using-deprecated } |
| // { dg-do run { target c++11 } } |
| |
| // Copyright (C) 2005-2021 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/>. |
| |
| // 20.6.6.2 Template class shared_ptr [util.smartptr.shared] |
| |
| #include <memory> |
| #include <testsuite_hooks.h> |
| |
| struct A { }; |
| |
| int destroyed = 0; |
| struct B : A { ~B() { ++destroyed; } }; |
| |
| // 20.6.6.2.1 shared_ptr constructors [util.smartptr.shared.const] |
| |
| // Construction from auto_ptr |
| |
| template<typename From, typename To> |
| constexpr bool constructible() |
| { |
| using namespace std; |
| return is_constructible<shared_ptr<To>, auto_ptr<From>>::value |
| && is_constructible<shared_ptr<const To>, auto_ptr<From>>::value |
| && is_constructible<shared_ptr<const To>, auto_ptr<const From>>::value; |
| } |
| |
| static_assert( constructible< A, A >(), "A -> A compatible" ); |
| static_assert( constructible< B, A >(), "B -> A compatible" ); |
| static_assert( constructible< int, int >(), "int -> int compatible" ); |
| static_assert( !constructible< int, long >(), "int -> long not compatible" ); |
| |
| void |
| test01() |
| { |
| std::auto_ptr<A> a(new A); |
| std::shared_ptr<A> a2(std::move(a)); |
| VERIFY( a.get() == 0 ); |
| VERIFY( a2.get() != 0 ); |
| VERIFY( a2.use_count() == 1 ); |
| } |
| |
| void |
| test02() |
| { |
| std::auto_ptr<B> b(new B); |
| std::shared_ptr<A> a(std::move(b)); |
| VERIFY( b.get() == 0 ); |
| VERIFY( a.get() != 0 ); |
| VERIFY( a.use_count() == 1 ); |
| a.reset(); |
| VERIFY( destroyed == 1 ); |
| } |
| |
| int |
| main() |
| { |
| test01(); |
| test02(); |
| return 0; |
| } |