1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
|
//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
// <functional>
// class function<R(ArgTypes...)>
// function(Fp);
// Ensure that __not_null works for all function types.
// See https://llvm.org/PR23589
// This test runs in C++03, but we have deprecated using std::function in C++03.
// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
//------------------------------------------------------------------------------
// TESTING std::function<...>::__not_null(Callable)
//
// Concerns:
// 1) The call __not_null(Callable) is well formed and correct for each
// possible 'Callable' type category. These categories include:
// 1a) function pointers
// 1b) member function pointer
// 1c) member data pointer
// 1d) callable class type
// 1e) lambdas
// Categories 1a, 1b, and 1c are 'Nullable' types. Only objects of these
// types can be null. The other categories are not tested here.
// 3) '__not_null(Callable)' is well formed when the call signature includes
// varargs.
// 4) '__not_null(Callable)' works for Callable types with all arities less
// than or equal to 3 in C++03.
// 5) '__not_null(Callable)' works when 'Callable' is a member function
// pointer to a cv or ref qualified function type.
//
// Plan:
// 1 For categories 1a, 1b and 1c define a set of
// 'Callable' objects for this category. This set should include examples
// of arity 0, 1, 2 and possible 3 including versions with varargs as the
// last parameter.
//
// 2 For each 'Callable' object in categories 1a, 1b and 1c do the following.
//
// 1 Define a type 'std::function<Sig>' as 'F' where 'Sig' is compatible with
// the signature of the 'Callable' object.
//
// 2 Create an object of type 'F' using a null pointer of type 'Callable'.
// Check that 'F.target<Callable>()' is null.
//
// 3 Create an object of type 'F' that is not null. Check that
// 'F.target<Callable>()' is not null and is equal to the original
// argument.
#include <functional>
#include <type_traits>
#include <cassert>
#include "test_macros.h"
///////////////////////////////////////////////////////////////////////////////
int foo() { return 42; }
int foo(int) { return 42; }
int foo(int, int) { return 42; }
int foo(int, int, int) { return 42; }
int foo(...) { return 42; }
int foo(int, ...) { return 42; }
int foo(int, int, ...) { return 42; }
int foo(int, int, int, ...) { return 42; }
///////////////////////////////////////////////////////////////////////////////
struct MemFun03 {
int foo() { return 42; }
int foo() const { return 42; }
int foo() volatile { return 42; }
int foo() const volatile { return 42; }
int foo(int) { return 42; }
int foo(int) const { return 42; }
int foo(int) volatile { return 42; }
int foo(int) const volatile { return 42; }
int foo(int, int) { return 42; }
int foo(int, int) const { return 42; }
int foo(int, int) volatile { return 42; }
int foo(int, int) const volatile { return 42; }
int foo(int, int, int) { return 42; }
int foo(int, int, int) const { return 42; }
int foo(int, int, int) volatile { return 42; }
int foo(int, int, int) const volatile { return 42; }
int foo(...) { return 42; }
int foo(...) const { return 42; }
int foo(...) volatile { return 42; }
int foo(...) const volatile { return 42; }
int foo(int, ...) { return 42; }
int foo(int, ...) const { return 42; }
int foo(int, ...) volatile { return 42; }
int foo(int, ...) const volatile { return 42; }
int foo(int, int, ...) { return 42; }
int foo(int, int, ...) const { return 42; }
int foo(int, int, ...) volatile { return 42; }
int foo(int, int, ...) const volatile { return 42; }
int foo(int, int, int, ...) { return 42; }
int foo(int, int, int, ...) const { return 42; }
int foo(int, int, int, ...) volatile { return 42; }
int foo(int, int, int, ...) const volatile { return 42; }
};
#if TEST_STD_VER >= 11
struct MemFun11 {
int foo() & { return 42; }
int foo() const & { return 42; }
int foo() volatile & { return 42; }
int foo() const volatile & { return 42; }
int foo(...) & { return 42; }
int foo(...) const & { return 42; }
int foo(...) volatile & { return 42; }
int foo(...) const volatile & { return 42; }
int foo() && { return 42; }
int foo() const && { return 42; }
int foo() volatile && { return 42; }
int foo() const volatile && { return 42; }
int foo(...) && { return 42; }
int foo(...) const && { return 42; }
int foo(...) volatile && { return 42; }
int foo(...) const volatile && { return 42; }
};
#endif // TEST_STD_VER >= 11
struct MemData {
int foo;
};
// Create a non-null free function by taking the address of
// &static_cast<Tp&>(foo);
template <class Tp>
struct Creator {
static Tp create() {
return &foo;
}
};
// Create a non-null member pointer.
template <class Ret, class Class>
struct Creator<Ret Class::*> {
typedef Ret Class::*ReturnType;
static ReturnType create() {
return &Class::foo;
}
};
template <class TestFn, class Fn>
void test_imp() {
{ // Check that the null value is detected
TestFn tf = nullptr;
std::function<Fn> f = tf;
RTTI_ASSERT(f.template target<TestFn>() == nullptr);
}
{ // Check that the non-null value is detected.
TestFn tf = Creator<TestFn>::create();
assert(tf != nullptr);
std::function<Fn> f = tf;
RTTI_ASSERT(f.template target<TestFn>() != nullptr);
RTTI_ASSERT(*f.template target<TestFn>() == tf);
}
}
void test_func() {
test_imp<int(*)(), int()>();
test_imp<int(*)(...), int()>();
test_imp<int(*)(int), int(int)>();
test_imp<int(*)(int, ...), int(int)>();
test_imp<int(*)(int, int), int(int, int)>();
test_imp<int(*)(int, int, ...), int(int, int)>();
test_imp<int(*)(int, int, int), int(int, int, int)>();
test_imp<int(*)(int, int, int, ...), int(int, int, int)>();
}
void test_mf() {
test_imp<int(MemFun03::*)(), int(MemFun03&)>();
test_imp<int(MemFun03::*)(...), int(MemFun03&)>();
test_imp<int(MemFun03::*)() const, int(MemFun03&)>();
test_imp<int(MemFun03::*)(...) const, int(MemFun03&)>();
test_imp<int(MemFun03::*)() volatile, int(MemFun03&)>();
test_imp<int(MemFun03::*)(...) volatile, int(MemFun03&)>();
test_imp<int(MemFun03::*)() const volatile, int(MemFun03&)>();
test_imp<int(MemFun03::*)(...) const volatile, int(MemFun03&)>();
test_imp<int(MemFun03::*)(int), int(MemFun03&, int)>();
test_imp<int(MemFun03::*)(int, ...), int(MemFun03&, int)>();
test_imp<int(MemFun03::*)(int) const, int(MemFun03&, int)>();
test_imp<int(MemFun03::*)(int, ...) const, int(MemFun03&, int)>();
test_imp<int(MemFun03::*)(int) volatile, int(MemFun03&, int)>();
test_imp<int(MemFun03::*)(int, ...) volatile, int(MemFun03&, int)>();
test_imp<int(MemFun03::*)(int) const volatile, int(MemFun03&, int)>();
test_imp<int(MemFun03::*)(int, ...) const volatile, int(MemFun03&, int)>();
test_imp<int(MemFun03::*)(int, int), int(MemFun03&, int, int)>();
test_imp<int(MemFun03::*)(int, int, ...), int(MemFun03&, int, int)>();
test_imp<int(MemFun03::*)(int, int) const, int(MemFun03&, int, int)>();
test_imp<int(MemFun03::*)(int, int, ...) const, int(MemFun03&, int, int)>();
test_imp<int(MemFun03::*)(int, int) volatile, int(MemFun03&, int, int)>();
test_imp<int(MemFun03::*)(int, int, ...) volatile, int(MemFun03&, int, int)>();
test_imp<int(MemFun03::*)(int, int) const volatile, int(MemFun03&, int, int)>();
test_imp<int(MemFun03::*)(int, int, ...) const volatile, int(MemFun03&, int, int)>();
#if TEST_STD_VER >= 11
test_imp<int(MemFun11::*)() &, int(MemFun11&)>();
test_imp<int(MemFun11::*)(...) &, int(MemFun11&)>();
test_imp<int(MemFun11::*)() const &, int(MemFun11&)>();
test_imp<int(MemFun11::*)(...) const &, int(MemFun11&)>();
test_imp<int(MemFun11::*)() volatile &, int(MemFun11&)>();
test_imp<int(MemFun11::*)(...) volatile &, int(MemFun11&)>();
test_imp<int(MemFun11::*)() const volatile &, int(MemFun11&)>();
test_imp<int(MemFun11::*)(...) const volatile &, int(MemFun11&)>();
test_imp<int(MemFun11::*)() &&, int(MemFun11&&)>();
test_imp<int(MemFun11::*)(...) &&, int(MemFun11&&)>();
test_imp<int(MemFun11::*)() const &&, int(MemFun11&&)>();
test_imp<int(MemFun11::*)(...) const &&, int(MemFun11&&)>();
test_imp<int(MemFun11::*)() volatile &&, int(MemFun11&&)>();
test_imp<int(MemFun11::*)(...) volatile &&, int(MemFun11&&)>();
test_imp<int(MemFun11::*)() const volatile &&, int(MemFun11&&)>();
test_imp<int(MemFun11::*)(...) const volatile &&, int(MemFun11&&)>();
#endif
}
void test_md() {
test_imp<int MemData::*, int(MemData&)>();
}
int main(int, char**) {
test_func();
test_mf();
test_md();
return 0;
}
|
