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
| // RUN: %clang_cc1 -std=c++1z -fsyntax-only -verify %s
// RUN: %clang_cc1 -std=c++03 -fsyntax-only -verify %s
// RUN: %clang_cc1 -std=c++03 -faligned-allocation -fsyntax-only -verify %s
// RUN: %clang_cc1 -std=c++11 -fsyntax-only -verify %s
// RUN: %clang_cc1 -std=c++11 -fsyntax-only -verify -fsized-deallocation %s
#if !__has_builtin(__builtin_operator_new) || !__has_builtin(__builtin_operator_delete)
#error builtins should always be available
#endif
#if __has_builtin(__builtin_operator_new) != 201802L || \
__has_builtin(__builtin_operator_delete) != 201802L
#error builtin should report updated value
#endif
typedef __SIZE_TYPE__ size_t;
namespace std {
struct nothrow_t {};
#if __cplusplus >= 201103L
enum class align_val_t : size_t {};
#else
enum align_val_t {
// We can't force an underlying type when targeting windows.
# ifndef _WIN32
__zero = 0, __max = (size_t)-1
# endif
};
#endif
}
std::nothrow_t nothrow;
void *operator new(size_t); // expected-note 1+ {{candidate function}}
void operator delete(void *); // expected-note 1+ {{candidate function}}
// Declare the reserved placement operators.
void *operator new(size_t, void*) throw(); // expected-note 1+ {{candidate function}}
void operator delete(void *, void *)throw(); // expected-note 1+ {{candidate function}}
void *operator new[](size_t, void*) throw();
void operator delete[](void*, void*) throw();
// Declare the replaceable global allocation operators.
void *operator new(size_t, const std::nothrow_t &) throw(); // expected-note 1+ {{candidate function}}
void *operator new[](size_t, const std::nothrow_t &) throw();
void operator delete(void *, const std::nothrow_t &)throw(); // expected-note 1+ {{candidate function}}
void operator delete[](void *, const std::nothrow_t &) throw();
// aligned allocation and deallocation functions.
void* operator new ( size_t count, std::align_val_t al); // expected-note 1+ {{candidate function}}
void operator delete(void *, std::align_val_t); // expected-note 1+ {{candidate}}
#ifndef __cpp_aligned_new
// expected-note@-3 1+ {{non-usual 'operator new' declared here}}
// expected-note@-3 1+ {{non-usual 'operator delete' declared here}}
#endif
void *operator new[](size_t count, std::align_val_t al);
void operator delete[](void*, std::align_val_t);
void operator delete(void *, size_t); // expected-note 1+ {{candidate}}
#ifndef __cpp_sized_deallocation
// expected-note@-2 1+ {{non-usual 'operator delete' declared here}}
#endif
void operator delete[](void*, size_t);
// Declare some other placemenet operators.
void *operator new(size_t, void*, bool) throw(); // expected-note 1+ {{candidate function}}
void *operator new[](size_t, void*, bool) throw();
void *NP = 0;
void test_typo_in_args() {
__builtin_operator_new(DNE); // expected-error {{undeclared identifier 'DNE'}}
__builtin_operator_new(DNE, DNE2); // expected-error {{undeclared identifier 'DNE'}} expected-error {{'DNE2'}}
__builtin_operator_delete(DNE); // expected-error {{'DNE'}}
__builtin_operator_delete(DNE, DNE2); // expected-error {{'DNE'}} expected-error {{'DNE2'}}
}
void test_arg_types() {
__builtin_operator_new(NP); // expected-error {{no matching function for call to 'operator new'}}
__builtin_operator_new(NP, std::align_val_t(0)); // expected-error {{no matching function for call to 'operator new'}}}
}
void test_return_type() {
int w = __builtin_operator_new(42); // expected-error {{cannot initialize a variable of type 'int' with an rvalue of type 'void *'}}
int y = __builtin_operator_delete(NP); // expected-error {{cannot initialize a variable of type 'int' with an rvalue of type 'void'}}
}
void test_aligned_new() {
#ifdef __cpp_aligned_new
void *p = __builtin_operator_new(42, std::align_val_t(2));
__builtin_operator_delete(p, std::align_val_t(2));
#else
// FIXME: We've manually declared the aligned new/delete overloads,
// but LangOpts::AlignedAllocation is false. Should our overloads be considered
// usual allocation/deallocation functions?
void *p = __builtin_operator_new(42, std::align_val_t(2)); // expected-error {{call to '__builtin_operator_new' selects non-usual allocation function}}
__builtin_operator_delete(p, std::align_val_t(2)); // expected-error {{call to '__builtin_operator_delete' selects non-usual deallocation function}}
#endif
}
void test_sized_delete() {
#ifdef __cpp_sized_deallocation
__builtin_operator_delete(NP, 4);
#else
__builtin_operator_delete(NP, 4); // expected-error {{call to '__builtin_operator_delete' selects non-usual deallocation function}}
#endif
}
void *operator new(size_t, bool); // expected-note 1+ {{candidate}}
// expected-note@-1 {{non-usual 'operator new' declared here}}
void operator delete(void *, bool); // expected-note 1+ {{candidate}}
// expected-note@-1 {{non-usual 'operator delete' declared here}}
void test_non_usual() {
__builtin_operator_new(42, true); // expected-error {{call to '__builtin_operator_new' selects non-usual allocation function}}
__builtin_operator_delete(NP, false); // expected-error {{call to '__builtin_operator_delete' selects non-usual deallocation function}}
}
template <int ID>
struct Tag {};
struct ConvertsToTypes {
operator std::align_val_t() const;
operator Tag<0>() const;
};
void *operator new(size_t, Tag<0>); // expected-note 0+ {{candidate}}
void operator delete(void *, Tag<0>); // expected-note 0+ {{candidate}}
void test_ambiguous() {
#ifdef __cpp_aligned_new
ConvertsToTypes cvt;
__builtin_operator_new(42, cvt); // expected-error {{call to 'operator new' is ambiguous}}
__builtin_operator_delete(NP, cvt); // expected-error {{call to 'operator delete' is ambiguous}}
#endif
}
void test_no_args() {
__builtin_operator_new(); // expected-error {{no matching function for call to 'operator new'}}
__builtin_operator_delete(); // expected-error {{no matching function for call to 'operator delete'}}
}
void test_no_matching_fn() {
Tag<1> tag;
__builtin_operator_new(42, tag); // expected-error {{no matching function for call to 'operator new'}}
__builtin_operator_delete(NP, tag); // expected-error {{no matching function for call to 'operator delete'}}
}
template <class Tp, class Up, class RetT>
void test_dependent_call(Tp new_arg, Up delete_arg, RetT) {
RetT ret = __builtin_operator_new(new_arg);
__builtin_operator_delete(delete_arg);
}
template void test_dependent_call(int, int*, void*);
void test_const_attribute() {
__builtin_operator_new(42); // expected-warning {{ignoring return value of function declared with const attribute}}
#ifdef __cpp_aligned_new
__builtin_operator_new(42, std::align_val_t(8)); // expected-warning {{ignoring return value of function declared with const attribute}}
#endif
}
|