]>
git.ipfire.org Git - thirdparty/gcc.git/blob - libstdc++-v3/testsuite/20_util/shared_ptr/cons/auto_ptr.cc
1 // { dg-options "-Wno-deprecated" }
2 // { dg-do run { target c++11 } }
4 // Copyright (C) 2005-2019 Free Software Foundation, Inc.
6 // This file is part of the GNU ISO C++ Library. This library is free
7 // software; you can redistribute it and/or modify it under the
8 // terms of the GNU General Public License as published by the
9 // Free Software Foundation; either version 3, or (at your option)
12 // This library is distributed in the hope that it will be useful,
13 // but WITHOUT ANY WARRANTY; without even the implied warranty of
14 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 // GNU General Public License for more details.
17 // You should have received a copy of the GNU General Public License along
18 // with this library; see the file COPYING3. If not see
19 // <http://www.gnu.org/licenses/>.
21 // 20.6.6.2 Template class shared_ptr [util.smartptr.shared]
24 #include <testsuite_hooks.h>
29 struct B
: A
{ ~B() { ++destroyed
; } };
31 // 20.6.6.2.1 shared_ptr constructors [util.smartptr.shared.const]
33 // Construction from auto_ptr
35 template<typename From
, typename To
>
36 constexpr bool constructible()
39 return is_constructible
<shared_ptr
<To
>, auto_ptr
<From
>>::value
40 && is_constructible
<shared_ptr
<const To
>, auto_ptr
<From
>>::value
41 && is_constructible
<shared_ptr
<const To
>, auto_ptr
<const From
>>::value
;
44 static_assert( constructible
< A
, A
>(), "A -> A compatible" );
45 static_assert( constructible
< B
, A
>(), "B -> A compatible" );
46 static_assert( constructible
< int, int >(), "int -> int compatible" );
47 static_assert( !constructible
< int, long >(), "int -> long not compatible" );
52 std::auto_ptr
<A
> a(new A
);
53 std::shared_ptr
<A
> a2(std::move(a
));
54 VERIFY( a
.get() == 0 );
55 VERIFY( a2
.get() != 0 );
56 VERIFY( a2
.use_count() == 1 );
62 std::auto_ptr
<B
> b(new B
);
63 std::shared_ptr
<A
> a(std::move(b
));
64 VERIFY( b
.get() == 0 );
65 VERIFY( a
.get() != 0 );
66 VERIFY( a
.use_count() == 1 );
68 VERIFY( destroyed
== 1 );