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52066eae | 1 | // { dg-do compile { target c++11 } } |
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2 | // 2009-11-12 Paolo Carlini <paolo.carlini@oracle.com> |
3 | // | |
85ec4feb | 4 | // Copyright (C) 2009-2018 Free Software Foundation, Inc. |
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5 | // |
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) | |
10 | // any later version. | |
11 | // | |
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. | |
16 | // | |
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/>. | |
20 | ||
21 | #include <type_traits> | |
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22 | |
23 | // DR 1255. | |
24 | void test01() | |
25 | { | |
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26 | using std::common_type; |
27 | using std::is_same; | |
28 | ||
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29 | static_assert( is_same<common_type<void>::type, void>(), |
30 | "common_type<void>" ); | |
31 | static_assert( is_same<common_type<const void>::type, void>(), | |
32 | "common_type<const void>" ); | |
33 | static_assert( is_same<common_type<volatile void>::type, void>(), | |
34 | "common_type<volatile void>" ); | |
35 | static_assert( is_same<common_type<const volatile void>::type, void>(), | |
36 | "common_type<const volatile void>" ); | |
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38 | static_assert( is_same<common_type<void, void>::type, void>(), |
39 | "common_type<void, void>" ); | |
40 | static_assert( is_same<common_type<void, const void>::type, void>(), | |
41 | "common_type<void, const void>" ); | |
42 | static_assert( is_same<common_type<void, volatile void>::type, void>(), | |
43 | "common_type<void, volatile void>" ); | |
44 | static_assert( is_same<common_type<void, const volatile void>::type, void>(), | |
45 | "common_type<void, const volatile void>" ); | |
46 | static_assert( is_same<common_type<const void, void>::type, void>(), | |
47 | "common_type<const void, void>" ); | |
48 | static_assert( is_same<common_type<const void, const void>::type, void>(), | |
49 | "common_type<const void, const void>" ); | |
50 | static_assert( is_same<common_type<const void, volatile void>::type, void>(), | |
51 | "common_type<const void, volatile void>" ); | |
52 | static_assert( is_same<common_type<const void, const volatile void>::type, | |
53 | void>(), "common_type<const void, const volatile void>" ); | |
54 | static_assert( is_same<common_type<volatile void, void>::type, void>(), | |
55 | "common_type<volatile void, void>" ); | |
56 | static_assert( is_same<common_type<volatile void, volatile void>::type, | |
57 | void>(), "common_type<volatile void, volatile void>" ); | |
58 | static_assert( is_same<common_type<volatile void, const void>::type, | |
59 | void>(), "common_type<volatile void, const void>" ); | |
60 | static_assert( is_same<common_type<volatile void, const volatile void>::type, | |
61 | void>(), "common_type<volatile void, const volatile void>" ); | |
62 | static_assert( is_same<common_type<const volatile void, void>::type, void>(), | |
63 | "common_type<const volatile void, const volatile void>" ); | |
64 | static_assert( is_same<common_type<const volatile void, const void>::type, | |
65 | void>(), "common_type<const volatile void, const void>" ); | |
66 | static_assert( is_same<common_type<const volatile void, volatile void>::type, | |
67 | void>(), "common_type<const volatile void, volatile void>" ); | |
68 | static_assert( is_same<common_type<const volatile void, const volatile void>::type, | |
69 | void>(), | |
70 | "common_type<const volatile void, const volatile void>" ); | |
7274deff | 71 | } |