1 //===----------------------------------------------------------------------===//
2 //
3 // The LLVM Compiler Infrastructure
4 //
5 // This file is dual licensed under the MIT and the University of Illinois Open
6 // Source Licenses. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9
10 // type_traits
11
12 // member_function_pointer
13
14 #include <type_traits>
15 #include "test_macros.h"
16
17 // NOTE: On Windows the function `test_is_member_function<void()>` and
18 // `test_is_member_function<void() noexcept> has the same mangled despite being
19 // a distinct instantiation. This causes Clang to emit an error. However
20 // structs do not have this problem.
21 template <class T>
22 struct test_member_function_pointer_imp {
23 static_assert(!std::is_void<T>::value, "");
24 #if TEST_STD_VER > 11
25 static_assert(!std::is_null_pointer<T>::value, "");
26 #endif
27 static_assert(!std::is_integral<T>::value, "");
28 static_assert(!std::is_floating_point<T>::value, "");
29 static_assert(!std::is_array<T>::value, "");
30 static_assert(!std::is_pointer<T>::value, "");
31 static_assert(!std::is_lvalue_reference<T>::value, "");
32 static_assert(!std::is_rvalue_reference<T>::value, "");
33 static_assert(!std::is_member_object_pointer<T>::value, "");
34 static_assert( std::is_member_function_pointer<T>::value, "");
35 static_assert(!std::is_enum<T>::value, "");
36 static_assert(!std::is_union<T>::value, "");
37 static_assert(!std::is_class<T>::value, "");
38 static_assert(!std::is_function<T>::value, "");
39 };
40
41 template <class T>
42 struct test_member_function_pointer :
43 test_member_function_pointer_imp<T>,
44 test_member_function_pointer_imp<const T>,
45 test_member_function_pointer_imp<volatile T>,
46 test_member_function_pointer_imp<const volatile T>
47 {
48 };
49
50 class Class
51 {
52 };
53
54 struct incomplete_type;
55
main()56 int main()
57 {
58 test_member_function_pointer<void (Class::*)()>();
59 test_member_function_pointer<void (Class::*)(int)>();
60 test_member_function_pointer<void (Class::*)(int, char)>();
61
62 test_member_function_pointer<void (Class::*)() const>();
63 test_member_function_pointer<void (Class::*)(int) const>();
64 test_member_function_pointer<void (Class::*)(int, char) const>();
65
66 test_member_function_pointer<void (Class::*)() volatile>();
67 test_member_function_pointer<void (Class::*)(int) volatile>();
68 test_member_function_pointer<void (Class::*)(int, char) volatile>();
69
70 test_member_function_pointer<void (Class::*)(...)>();
71 test_member_function_pointer<void (Class::*)(int, ...)>();
72 test_member_function_pointer<void (Class::*)(int, char, ...)>();
73
74 test_member_function_pointer<void (Class::*)(...) const>();
75 test_member_function_pointer<void (Class::*)(int, ...) const>();
76 test_member_function_pointer<void (Class::*)(int, char, ...) const>();
77
78 test_member_function_pointer<void (Class::*)(...) volatile>();
79 test_member_function_pointer<void (Class::*)(int, ...) volatile>();
80 test_member_function_pointer<void (Class::*)(int, char, ...) volatile>();
81
82
83 // reference qualifiers on functions are a C++11 extension
84 #if TEST_STD_VER >= 11
85 // Noexcept qualifiers
86 test_member_function_pointer<void (Class::*)() noexcept>();
87 test_member_function_pointer<void (Class::*)(int) noexcept>();
88 test_member_function_pointer<void (Class::*)(int, char) noexcept>();
89
90 test_member_function_pointer<void (Class::*)() const noexcept>();
91 test_member_function_pointer<void (Class::*)(int) const noexcept>();
92 test_member_function_pointer<void (Class::*)(int, char) const noexcept>();
93
94 test_member_function_pointer<void (Class::*)() volatile noexcept>();
95 test_member_function_pointer<void (Class::*)(int) volatile noexcept>();
96 test_member_function_pointer<void (Class::*)(int, char) volatile noexcept>();
97
98 test_member_function_pointer<void (Class::*)(...) noexcept>();
99 test_member_function_pointer<void (Class::*)(int, ...) noexcept>();
100 test_member_function_pointer<void (Class::*)(int, char, ...) noexcept>();
101
102 test_member_function_pointer<void (Class::*)(...) const noexcept>();
103 test_member_function_pointer<void (Class::*)(int, ...) const noexcept>();
104 test_member_function_pointer<void (Class::*)(int, char, ...) const noexcept>();
105
106 test_member_function_pointer<void (Class::*)(...) volatile noexcept>();
107 test_member_function_pointer<void (Class::*)(int, ...) volatile noexcept>();
108 test_member_function_pointer<void (Class::*)(int, char, ...) volatile noexcept>();
109
110 // lvalue qualifiers
111 test_member_function_pointer<void (Class::*)() &>();
112 test_member_function_pointer<void (Class::*)(int) &>();
113 test_member_function_pointer<void (Class::*)(int, char) &>();
114 test_member_function_pointer<void (Class::*)(...) &>();
115 test_member_function_pointer<void (Class::*)(int,...) &>();
116 test_member_function_pointer<void (Class::*)(int, char,...) &>();
117
118 test_member_function_pointer<void (Class::*)() const &>();
119 test_member_function_pointer<void (Class::*)(int) const &>();
120 test_member_function_pointer<void (Class::*)(int, char) const &>();
121 test_member_function_pointer<void (Class::*)(...) const &>();
122 test_member_function_pointer<void (Class::*)(int,...) const &>();
123 test_member_function_pointer<void (Class::*)(int, char,...) const &>();
124
125 test_member_function_pointer<void (Class::*)() volatile &>();
126 test_member_function_pointer<void (Class::*)(int) volatile &>();
127 test_member_function_pointer<void (Class::*)(int, char) volatile &>();
128 test_member_function_pointer<void (Class::*)(...) volatile &>();
129 test_member_function_pointer<void (Class::*)(int,...) volatile &>();
130 test_member_function_pointer<void (Class::*)(int, char,...) volatile &>();
131
132 test_member_function_pointer<void (Class::*)() const volatile &>();
133 test_member_function_pointer<void (Class::*)(int) const volatile &>();
134 test_member_function_pointer<void (Class::*)(int, char) const volatile &>();
135 test_member_function_pointer<void (Class::*)(...) const volatile &>();
136 test_member_function_pointer<void (Class::*)(int,...) const volatile &>();
137 test_member_function_pointer<void (Class::*)(int, char,...) const volatile &>();
138
139 // Lvalue qualifiers with noexcept
140 test_member_function_pointer<void (Class::*)() & noexcept>();
141 test_member_function_pointer<void (Class::*)(int) & noexcept>();
142 test_member_function_pointer<void (Class::*)(int, char) & noexcept>();
143 test_member_function_pointer<void (Class::*)(...) & noexcept>();
144 test_member_function_pointer<void (Class::*)(int,...) & noexcept>();
145 test_member_function_pointer<void (Class::*)(int, char,...) & noexcept>();
146
147 test_member_function_pointer<void (Class::*)() const & noexcept>();
148 test_member_function_pointer<void (Class::*)(int) const & noexcept>();
149 test_member_function_pointer<void (Class::*)(int, char) const & noexcept>();
150 test_member_function_pointer<void (Class::*)(...) const & noexcept>();
151 test_member_function_pointer<void (Class::*)(int,...) const & noexcept>();
152 test_member_function_pointer<void (Class::*)(int, char,...) const & noexcept>();
153
154 test_member_function_pointer<void (Class::*)() volatile & noexcept>();
155 test_member_function_pointer<void (Class::*)(int) volatile & noexcept>();
156 test_member_function_pointer<void (Class::*)(int, char) volatile & noexcept>();
157 test_member_function_pointer<void (Class::*)(...) volatile & noexcept>();
158 test_member_function_pointer<void (Class::*)(int,...) volatile & noexcept>();
159 test_member_function_pointer<void (Class::*)(int, char,...) volatile & noexcept>();
160
161 test_member_function_pointer<void (Class::*)() const volatile & noexcept>();
162 test_member_function_pointer<void (Class::*)(int) const volatile & noexcept>();
163 test_member_function_pointer<void (Class::*)(int, char) const volatile & noexcept>();
164 test_member_function_pointer<void (Class::*)(...) const volatile & noexcept>();
165 test_member_function_pointer<void (Class::*)(int,...) const volatile & noexcept>();
166 test_member_function_pointer<void (Class::*)(int, char,...) const volatile & noexcept>();
167
168 // RValue qualifiers
169 test_member_function_pointer<void (Class::*)() &&>();
170 test_member_function_pointer<void (Class::*)(int) &&>();
171 test_member_function_pointer<void (Class::*)(int, char) &&>();
172 test_member_function_pointer<void (Class::*)(...) &&>();
173 test_member_function_pointer<void (Class::*)(int,...) &&>();
174 test_member_function_pointer<void (Class::*)(int, char,...) &&>();
175
176 test_member_function_pointer<void (Class::*)() const &&>();
177 test_member_function_pointer<void (Class::*)(int) const &&>();
178 test_member_function_pointer<void (Class::*)(int, char) const &&>();
179 test_member_function_pointer<void (Class::*)(...) const &&>();
180 test_member_function_pointer<void (Class::*)(int,...) const &&>();
181 test_member_function_pointer<void (Class::*)(int, char,...) const &&>();
182
183 test_member_function_pointer<void (Class::*)() volatile &&>();
184 test_member_function_pointer<void (Class::*)(int) volatile &&>();
185 test_member_function_pointer<void (Class::*)(int, char) volatile &&>();
186 test_member_function_pointer<void (Class::*)(...) volatile &&>();
187 test_member_function_pointer<void (Class::*)(int,...) volatile &&>();
188 test_member_function_pointer<void (Class::*)(int, char,...) volatile &&>();
189
190 test_member_function_pointer<void (Class::*)() const volatile &&>();
191 test_member_function_pointer<void (Class::*)(int) const volatile &&>();
192 test_member_function_pointer<void (Class::*)(int, char) const volatile &&>();
193 test_member_function_pointer<void (Class::*)(...) const volatile &&>();
194 test_member_function_pointer<void (Class::*)(int,...) const volatile &&>();
195 test_member_function_pointer<void (Class::*)(int, char,...) const volatile &&>();
196
197 // RValue qualifiers with noexcept
198 test_member_function_pointer<void (Class::*)() && noexcept>();
199 test_member_function_pointer<void (Class::*)(int) && noexcept>();
200 test_member_function_pointer<void (Class::*)(int, char) && noexcept>();
201 test_member_function_pointer<void (Class::*)(...) && noexcept>();
202 test_member_function_pointer<void (Class::*)(int,...) && noexcept>();
203 test_member_function_pointer<void (Class::*)(int, char,...) && noexcept>();
204
205 test_member_function_pointer<void (Class::*)() const && noexcept>();
206 test_member_function_pointer<void (Class::*)(int) const && noexcept>();
207 test_member_function_pointer<void (Class::*)(int, char) const && noexcept>();
208 test_member_function_pointer<void (Class::*)(...) const && noexcept>();
209 test_member_function_pointer<void (Class::*)(int,...) const && noexcept>();
210 test_member_function_pointer<void (Class::*)(int, char,...) const && noexcept>();
211
212 test_member_function_pointer<void (Class::*)() volatile && noexcept>();
213 test_member_function_pointer<void (Class::*)(int) volatile && noexcept>();
214 test_member_function_pointer<void (Class::*)(int, char) volatile && noexcept>();
215 test_member_function_pointer<void (Class::*)(...) volatile && noexcept>();
216 test_member_function_pointer<void (Class::*)(int,...) volatile && noexcept>();
217 test_member_function_pointer<void (Class::*)(int, char,...) volatile && noexcept>();
218
219 test_member_function_pointer<void (Class::*)() const volatile && noexcept>();
220 test_member_function_pointer<void (Class::*)(int) const volatile && noexcept>();
221 test_member_function_pointer<void (Class::*)(int, char) const volatile && noexcept>();
222 test_member_function_pointer<void (Class::*)(...) const volatile && noexcept>();
223 test_member_function_pointer<void (Class::*)(int,...) const volatile && noexcept>();
224 test_member_function_pointer<void (Class::*)(int, char,...) const volatile && noexcept>();
225 #endif
226
227 // LWG#2582
228 static_assert(!std::is_member_function_pointer<incomplete_type>::value, "");
229 }
230