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git.ipfire.org Git - thirdparty/gcc.git/blob - libstdc++-v3/testsuite/20_util/shared_ptr/casts/rval.cc
1 // { dg-options "-std=gnu++2a" }
2 // { dg-do run { target c++2a } }
4 // Copyright (C) 2019-2022 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 // shared_ptr casts [util.smartptr.shared.cast]
24 #include <testsuite_hooks.h>
25 #include <testsuite_tr1.h>
27 struct MyP
{ virtual ~MyP() { }; };
28 struct MyDP
: MyP
{ };
32 using __gnu_test::check_ret_type
;
33 using std::shared_ptr
;
34 using std::static_pointer_cast
;
35 using std::const_pointer_cast
;
36 using std::dynamic_pointer_cast
;
37 using std::reinterpret_pointer_cast
;
39 shared_ptr
<double> spd
;
40 shared_ptr
<const int> spci
;
43 check_ret_type
<shared_ptr
<void>>(static_pointer_cast
<void>(std::move(spd
)));
44 check_ret_type
<shared_ptr
<int>>(const_pointer_cast
<int>(std::move(spci
)));
45 check_ret_type
<shared_ptr
<MyDP
>>(dynamic_pointer_cast
<MyDP
>(std::move(spa
)));
46 check_ret_type
<shared_ptr
<void>>(reinterpret_pointer_cast
<void>(std::move(spd
)));
47 check_ret_type
<shared_ptr
<const short>>(reinterpret_pointer_cast
<const short>(std::move(spci
)));
48 check_ret_type
<shared_ptr
<MyDP
>>(reinterpret_pointer_cast
<MyDP
>(std::move(spa
)));
54 using std::shared_ptr
;
55 using std::static_pointer_cast
;
56 using std::const_pointer_cast
;
57 using std::dynamic_pointer_cast
;
58 using std::reinterpret_pointer_cast
;
60 int* ptr
= new int(1);
61 shared_ptr
<const void> pcv(ptr
);
62 auto pci
= static_pointer_cast
<const int>(std::move(pcv
));
63 VERIFY(pci
.use_count() == 1);
64 VERIFY(pcv
.use_count() == 0);
65 VERIFY(pci
.get() == ptr
);
66 VERIFY(pcv
.get() == nullptr);
67 auto pi
= const_pointer_cast
<int>(std::move(pci
));
68 VERIFY(pi
.use_count() == 1);
69 VERIFY(pci
.use_count() == 0);
70 VERIFY(pi
.get() == ptr
);
71 VERIFY(pci
.get() == nullptr);
74 shared_ptr
<MyP
> pp(pptr
);
75 auto pdp
= dynamic_pointer_cast
<MyDP
>(std::move(pp
));
76 VERIFY(pdp
.use_count() == 0);
77 VERIFY(pp
.use_count() == 1);
78 VERIFY(pdp
.get() == nullptr);
79 VERIFY(pp
.get() == pptr
);
82 pdp
= dynamic_pointer_cast
<MyDP
>(std::move(pp
));
83 VERIFY(pdp
.use_count() == 1);
84 VERIFY(pp
.use_count() == 0);
85 VERIFY(pdp
.get() == pptr
);
86 VERIFY(pp
.get() == nullptr);
90 auto pl
= reinterpret_pointer_cast
<long>(std::move(pi
));
91 VERIFY(pl
.use_count() == 1);
92 VERIFY(pi
.use_count() == 0);
93 VERIFY(reinterpret_cast<int*>(pl
.get()) == ptr
);
94 VERIFY(pi
.get() == nullptr);