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git.ipfire.org Git - thirdparty/gcc.git/blob - libstdc++-v3/testsuite/20_util/enable_shared_from_this/members/const.cc
1 // Copyright (C) 2015 Free Software Foundation, Inc.
3 // This file is part of the GNU ISO C++ Library. This library is free
4 // software; you can redistribute it and/or modify it under the
5 // terms of the GNU General Public License as published by the
6 // Free Software Foundation; either version 3, or (at your option)
9 // This library is distributed in the hope that it will be useful,
10 // but WITHOUT ANY WARRANTY; without even the implied warranty of
11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 // GNU General Public License for more details.
14 // You should have received a copy of the GNU General Public License along
15 // with this library; see the file COPYING3. If not see
16 // <http://www.gnu.org/licenses/>.
18 // { dg-options "-std=gnu++11" }
21 #include <testsuite_hooks.h>
23 template<typename T
, typename U
>
25 share_ownership(const std::shared_ptr
<T
>& p1
, const std::shared_ptr
<U
>& p2
)
27 return !p1
.owner_before(p2
) && !p2
.owner_before(p1
);
33 struct X
: public std::enable_shared_from_this
<X
> { };
35 std::shared_ptr
<CX
> p(new X
);
36 VERIFY( share_ownership(p
->shared_from_this(), p
) );
38 VERIFY( share_ownership(p
->shared_from_this(), p
) );
39 auto p2
= std::const_pointer_cast
<X
>(p
)->shared_from_this();
40 VERIFY( share_ownership(p2
, p
) );
48 struct X
: public std::enable_shared_from_this
<CX
> { };
49 std::shared_ptr
<CX
> p(new X
);
50 VERIFY( share_ownership(p
->shared_from_this(), p
) );
52 VERIFY( share_ownership(p
->shared_from_this(), p
) );