blob: 5c34e016e57de19ebe57c6e76853d3d67d3b92e1 (
plain)
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
|
// RUN: %clang_cc1 -fsyntax-only -verify %s
struct X {
union {
float f3;
double d2;
} named;
union {
int i;
float f;
union {
float f2;
mutable double d;
};
};
void test_unqual_references();
struct {
int a;
float b;
};
void test_unqual_references_const() const;
mutable union { // expected-error{{anonymous union at class scope must not have a storage specifier}}
float c1;
double c2;
};
};
void X::test_unqual_references() {
i = 0;
f = 0.0;
f2 = f;
d = f;
f3 = 0; // expected-error{{use of undeclared identifier 'f3'}}
a = 0;
}
void X::test_unqual_references_const() const {
d = 0.0;
f2 = 0; // expected-error{{read-only variable is not assignable}}
a = 0; // expected-error{{read-only variable is not assignable}}
}
void test_unqual_references(X x, const X xc) {
x.i = 0;
x.f = 0.0;
x.f2 = x.f;
x.d = x.f;
x.f3 = 0; // expected-error{{no member named 'f3'}}
x.a = 0;
xc.d = 0.0;
xc.f = 0; // expected-error{{read-only variable is not assignable}}
xc.a = 0; // expected-error{{read-only variable is not assignable}}
}
struct Redecl {
int x; // expected-note{{previous declaration is here}}
class y { };
union {
int x; // expected-error{{member of anonymous union redeclares 'x'}}
float y;
double z; // expected-note{{previous declaration is here}}
double zz; // expected-note{{previous definition is here}}
};
int z; // expected-error{{duplicate member 'z'}}
void zz(); // expected-error{{redefinition of 'zz' as different kind of symbol}}
};
union { // expected-error{{anonymous unions at namespace or global scope must be declared 'static'}}
int int_val;
float float_val;
};
static union {
int int_val2;
float float_val2;
};
void f() {
int_val2 = 0;
float_val2 = 0.0;
}
void g() {
union {
int i;
float f2;
};
i = 0;
f2 = 0.0;
}
struct BadMembers {
union {
struct X { }; // expected-error {{types cannot be declared in an anonymous union}}
struct { int x; int y; } y;
void f(); // expected-error{{functions cannot be declared in an anonymous union}}
private: int x1; // expected-error{{anonymous union cannot contain a private data member}}
protected: float x2; // expected-error{{anonymous union cannot contain a protected data member}}
};
};
// <rdar://problem/6481130>
typedef union { }; // expected-warning{{declaration does not declare anything}}
// <rdar://problem/7562438>
typedef struct objc_module *Foo ;
typedef struct _s {
union {
int a;
int Foo;
};
} s, *ps;
|