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7adcbafe | 1 | // Copyright (C) 2019-2022 Free Software Foundation, Inc. |
cfc219ae 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 | ||
18 | // { dg-options "-std=gnu++2a" } | |
19 | // { dg-do compile { target c++2a } } | |
20 | ||
21 | #include <concepts> | |
22 | ||
23 | static_assert( std::convertible_to<int, int> ); | |
24 | static_assert( std::convertible_to<int&, int> ); | |
25 | static_assert( !std::convertible_to<int, int&> ); | |
26 | static_assert( std::convertible_to<int, const int&> ); | |
27 | static_assert( !std::convertible_to<int&&, int&> ); | |
28 | static_assert( std::convertible_to<int&&, const int&> ); | |
29 | static_assert( std::convertible_to<const int, int> ); | |
30 | static_assert( !std::convertible_to<const int, int&> ); | |
31 | static_assert( std::convertible_to<const int, const int> ); | |
32 | static_assert( std::convertible_to<const int, const int&> ); | |
33 | ||
34 | static_assert( std::convertible_to<int, float> ); | |
35 | static_assert( !std::convertible_to<int, float&> ); | |
36 | static_assert( !std::convertible_to<int, int*> ); | |
37 | static_assert( std::convertible_to<int*, void*> ); | |
38 | static_assert( std::convertible_to<int*, const void*> ); | |
39 | static_assert( !std::convertible_to<const int*, void*> ); | |
40 | static_assert( !std::convertible_to<int, void> ); | |
41 | ||
42 | struct A { }; | |
43 | static_assert( std::convertible_to<A, A> ); | |
44 | static_assert( std::convertible_to<A, const A> ); | |
45 | static_assert( std::convertible_to<A const, const A> ); | |
46 | static_assert( !std::convertible_to<volatile A, const A> ); | |
47 | static_assert( !std::convertible_to<volatile A, const volatile A&> ); | |
48 | static_assert( std::convertible_to<volatile A&, const volatile A&> ); | |
49 | ||
50 | struct B : A { }; | |
51 | static_assert( !std::convertible_to<A, B> ); | |
52 | static_assert( std::convertible_to<B, A> ); | |
53 | static_assert( std::convertible_to<const B, A> ); | |
54 | static_assert( std::convertible_to<B, const A> ); | |
55 | static_assert( std::convertible_to<B, const A&> ); | |
56 | static_assert( !std::convertible_to<volatile B, const A> ); | |
57 | static_assert( !std::convertible_to<volatile B, const A&> ); | |
58 | ||
59 | struct C : private A { }; | |
60 | static_assert( !std::convertible_to<A, C> ); | |
61 | static_assert( !std::convertible_to<C, A> ); | |
62 | ||
63 | struct D : A { }; | |
64 | struct E : B, D { }; | |
65 | static_assert( !std::convertible_to<A, E> ); | |
66 | static_assert( !std::convertible_to<E, A> ); | |
67 | ||
68 | struct F | |
69 | { | |
70 | F(A) { } | |
71 | F(C&&) { } | |
72 | }; | |
73 | static_assert( std::convertible_to<A, F> ); | |
74 | static_assert( std::convertible_to<const A, F> ); | |
75 | static_assert( std::convertible_to<C, F> ); | |
76 | static_assert( !std::convertible_to<C&, F> ); | |
77 | static_assert( !std::convertible_to<const C, F> ); |