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a945c346 | 1 | // Copyright (C) 2018-2024 Free Software Foundation, Inc. |
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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 | ||
6d0b43f5 | 18 | // { dg-do compile { target c++20 } } |
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19 | |
20 | #include <type_traits> | |
21 | ||
22 | template<typename T, typename = typename std::type_identity<T>::type> | |
23 | struct test; // undefined | |
24 | ||
25 | template<typename T> | |
26 | struct test<T, T> : std::true_type { }; | |
27 | ||
28 | enum test_enum { }; | |
29 | struct test_class { }; | |
30 | struct incomplete_class; | |
31 | ||
32 | void test01() | |
33 | { | |
34 | static_assert(test<float>::value, ""); | |
35 | static_assert(test<const unsigned int>::value, ""); | |
36 | static_assert(test<const unsigned int>::value, ""); | |
37 | static_assert(test<volatile unsigned int>::value, ""); | |
38 | static_assert(test<const volatile unsigned int>::value, ""); | |
39 | static_assert(test<const unsigned char>::value, ""); | |
ee896276 | 40 | static_assert(test<volatile wchar_t>::value, "" ); |
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41 | |
42 | // Pointers | |
43 | static_assert(test<void*>::value, ""); | |
44 | static_assert(test<long*>::value, ""); | |
45 | // References | |
46 | static_assert(test<short&>::value, ""); | |
47 | static_assert(test<char&&>::value, ""); | |
48 | static_assert(test<int*&>::value, ""); | |
49 | // Arrays | |
50 | static_assert(test<int[]>::value, ""); | |
51 | static_assert(test<int[2]>::value, ""); | |
52 | static_assert(test<int[2][3]>::value, ""); | |
53 | static_assert(test<int(*)[2]>::value, ""); | |
54 | static_assert(test<int(&)[2]>::value, ""); | |
55 | ||
56 | static_assert(test<test_enum>::value, ""); | |
57 | static_assert(test<test_class>::value, ""); | |
58 | static_assert(test<incomplete_class>::value, ""); | |
59 | ||
60 | // Functions | |
61 | static_assert(test<void(*)()>::value, ""); | |
62 | static_assert(test<int(*)(int) noexcept>::value, ""); | |
63 | static_assert(test<void(&)()>::value, ""); | |
64 | static_assert(test<long(&)(long) noexcept>::value, ""); | |
65 | static_assert(test<void()>::value, ""); | |
66 | static_assert(test<int(int, int)>::value, ""); | |
67 | static_assert(test<void() noexcept>::value, ""); | |
68 | static_assert(test<int(int, int) noexcept>::value, ""); | |
69 | ||
70 | // Abominable function types | |
71 | static_assert(test<void(int) const>::value, ""); | |
72 | static_assert(test<void(int) const volatile>::value, ""); | |
73 | ||
74 | // Pointers to members | |
75 | static_assert(test<int incomplete_class::*>::value, ""); | |
76 | static_assert(test<void(incomplete_class::*)(int)>::value, ""); | |
77 | static_assert(test<void(incomplete_class::*)(int) noexcept>::value, ""); | |
78 | static_assert(test<void(incomplete_class::*)() const>::value, ""); | |
79 | static_assert(test<void(incomplete_class::*)() &>::value, ""); | |
80 | static_assert(test<void(incomplete_class::*)() &&>::value, ""); | |
81 | static_assert(test<void(incomplete_class::*)() volatile &&>::value, ""); | |
82 | ||
83 | #ifndef __STRICT_ANSI__ | |
84 | // GNU Extensions. | |
29a9de9b | 85 | #ifdef __SIZEOF_INT128__ |
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86 | static_assert(test<unsigned __int128>::value, ""); |
87 | static_assert(test<unsigned __int128>::value, ""); | |
88 | #endif | |
89 | #endif | |
90 | } |