]>
Commit | Line | Data |
---|---|---|
a5544970 | 1 | // Copyright (C) 2015-2019 Free Software Foundation, Inc. |
28eca950 JW |
2 | // |
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) | |
7 | // any later version. | |
8 | ||
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. | |
13 | ||
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/>. | |
17 | ||
52066eae | 18 | // { dg-do run { target c++11 } } |
28eca950 JW |
19 | |
20 | #include <memory> | |
21 | #include <testsuite_hooks.h> | |
22 | ||
4f63d614 JW |
23 | template<typename T> |
24 | bool not_enabled(T& t) | |
28eca950 | 25 | { |
4f63d614 JW |
26 | #if __cpp_lib_enable_shared_from_this >= 201603 |
27 | return t.weak_from_this().expired(); | |
28 | #else | |
29 | try { | |
30 | t.shared_from_this(); | |
31 | return false; | |
32 | } catch (const std::bad_weak_ptr&) { | |
33 | return true; | |
34 | } | |
35 | #endif | |
36 | } | |
28eca950 | 37 | |
4f63d614 JW |
38 | struct A : std::enable_shared_from_this<A> { }; |
39 | struct B : std::enable_shared_from_this<B> { }; | |
40 | struct D : A, B { }; | |
28eca950 | 41 | |
4f63d614 | 42 | void test01() |
28eca950 | 43 | { |
4f63d614 JW |
44 | auto d = std::make_shared<D>(); |
45 | VERIFY( not_enabled( static_cast<A&>(*d) ) ); | |
46 | VERIFY( not_enabled( static_cast<const A&>(*d) ) ); | |
47 | VERIFY( not_enabled( static_cast<B&>(*d) ) ); | |
48 | VERIFY( not_enabled( static_cast<const B&>(*d) ) ); | |
49 | } | |
28eca950 | 50 | |
4f63d614 JW |
51 | struct E : std::__enable_shared_from_this<E> { }; |
52 | struct F : std::__enable_shared_from_this<F> { }; | |
53 | struct G : E, F { }; | |
54 | ||
55 | void test02() | |
28eca950 | 56 | { |
4f63d614 JW |
57 | auto g = std::make_shared<G>(); |
58 | VERIFY( not_enabled( static_cast<E&>(*g) ) ); | |
59 | VERIFY( not_enabled( static_cast<const E&>(*g) ) ); | |
60 | VERIFY( not_enabled( static_cast<F&>(*g) ) ); | |
61 | VERIFY( not_enabled( static_cast<const F&>(*g) ) ); | |
62 | } | |
28eca950 | 63 | |
4f63d614 JW |
64 | struct H : D, G { }; |
65 | ||
66 | void test03() | |
67 | { | |
68 | auto h = std::make_shared<H>(); | |
69 | VERIFY( not_enabled( static_cast<A&>(*h) ) ); | |
70 | VERIFY( not_enabled( static_cast<const A&>(*h) ) ); | |
71 | VERIFY( not_enabled( static_cast<B&>(*h) ) ); | |
72 | VERIFY( not_enabled( static_cast<const B&>(*h) ) ); | |
73 | VERIFY( not_enabled( static_cast<E&>(*h) ) ); | |
74 | VERIFY( not_enabled( static_cast<const E&>(*h) ) ); | |
75 | VERIFY( not_enabled( static_cast<F&>(*h) ) ); | |
76 | VERIFY( not_enabled( static_cast<const F&>(*h) ) ); | |
28eca950 JW |
77 | } |
78 | ||
79 | int | |
80 | main() | |
81 | { | |
82 | test01(); | |
4f63d614 JW |
83 | test02(); |
84 | test03(); | |
28eca950 | 85 | } |