1 // RUN: %clang_cc1 -fsyntax-only -verify %s
3 #define offsetof(TYPE, MEMBER) __builtin_offsetof (TYPE, MEMBER)
5 typedef struct P
{ int i
; float f
; } PT
;
6 struct external_sun3_core
17 x
= offsetof(struct external_sun3_core
, c_regs
);
18 x
= __builtin_offsetof(struct external_sun3_core
, X
[42].f
);
20 x
= __builtin_offsetof(struct external_sun3_core
, X
[42].f2
); // expected-error {{no member named 'f2'}}
21 x
= __builtin_offsetof(int, X
[42].f2
); // expected-error {{offsetof requires struct}}
23 int a
[__builtin_offsetof(struct external_sun3_core
, X
) == 4 ? 1 : -1];
24 int b
[__builtin_offsetof(struct external_sun3_core
, X
[42]) == 340 ? 1 : -1];
25 int c
[__builtin_offsetof(struct external_sun3_core
, X
[42].f2
) == 344 ? 1 : -1]; // expected-error {{no member named 'f2'}}
31 int v1
= offsetof (struct s1
, a
) == 0 ? 0 : f();
34 int v2
= (int)(&((struct s2
*) 0)->a
) == 0 ? 0 : f();
37 int v3
= __builtin_offsetof(struct s3
, a
) == 0 ? 0 : f();
41 unsigned char sun_len
;
45 int a
[__builtin_offsetof(struct sockaddr_un
, sun_path
[len
+1])];
49 union x
{struct {int x
;};};
50 int x
[__builtin_offsetof(union x
, x
)];
52 // rdar://problem/7222956
53 struct incomplete
; // expected-note 2 {{forward declaration of 'struct incomplete'}}
54 int test1
[__builtin_offsetof(struct incomplete
, foo
)]; // expected-error {{offsetof of incomplete type 'struct incomplete'}}
56 int test2
[__builtin_offsetof(struct incomplete
[10], [4].foo
)]; // expected-error {{array has incomplete element type 'struct incomplete'}}
59 struct has_bitfields
{
61 int j
: 12; // expected-note{{bit-field is declared here}}
64 int test3
= __builtin_offsetof(struct has_bitfields
, j
); // expected-error{{cannot compute offset of bit-field 'j'}}
66 typedef struct Array
{ int array
[1]; } Array
;
67 int test4
= __builtin_offsetof(Array
, array
);