xref: /llvm-project/clang/test/SemaObjC/class-bitfield.m (revision 0f1c1be1968076d6f96f8a7bcc4a15cf195ecd97)
1// RUN: %clang_cc1 %s -fobjc-runtime=macosx-fragile-10.5 -fsyntax-only -verify
2
3@interface X
4{
5  int a : -1; // expected-error{{bit-field 'a' has negative width}}
6
7  int b : 33; // expected-error{{width of bit-field 'b' (33 bits) exceeds the width of its type (32 bits)}}
8
9  int c : (1 + 0.25); // expected-error{{integer constant expression must have integer type}}
10  int d : (int)(1 + 0.25);
11
12  int e : 0;  // expected-error {{bit-field 'e' has zero width}}
13}
14@end
15
16@interface Base {
17  int i;
18}
19@end
20
21@interface WithBitFields: Base {
22  void *isa; // expected-note {{previous definition is here}}
23  unsigned a: 5;
24  signed b: 4;
25  int c: 5; // expected-note {{previous definition is here}}
26}
27@end
28
29@implementation WithBitFields {
30  char *isa;  // expected-error {{instance variable 'isa' has conflicting type: 'char *' vs 'void *'}}
31  unsigned a: 5;
32  signed b: 4;
33  int c: 3;  // expected-error {{instance variable 'c' has conflicting bit-field width}}
34}
35@end
36