1 // RUN: %clang_cc1 %s -fsyntax-only -verify
2 enum e0; // expected-note{{forward declaration of 'enum e0'}}
3
4 struct a {
5 int a : -1; // expected-error{{bit-field 'a' has negative width}}
6
7 // rdar://6081627
8 int b : 33; // expected-error{{size of bit-field 'b' (33 bits) exceeds size of its type (32 bits)}}
9
10 int c : (1 + 0.25); // expected-error{{expression is not an integer constant expression}}
11 int d : (int)(1 + 0.25);
12
13 // rdar://6138816
14 int e : 0; // expected-error {{bit-field 'e' has zero width}}
15
16 float xx : 4; // expected-error {{bit-field 'xx' has non-integral type}}
17
18 // PR3607
19 enum e0 f : 1; // expected-error {{field has incomplete type 'enum e0'}}
20
21 int g : (_Bool)1;
22
23 // PR4017
24 char : 10; // expected-error {{size of anonymous bit-field (10 bits) exceeds size of its type (8 bits)}}
25 unsigned : -2; // expected-error {{anonymous bit-field has negative width (-2)}}
26 float : 12; // expected-error {{anonymous bit-field has non-integral type 'float'}}
27 };
28
29 struct b {unsigned x : 2;} x;
30 __typeof__(x.x+1) y;
31 int y;
32
33 struct {unsigned x : 2;} x2;
34 __typeof__((x.x+=1)+1) y;
35 __typeof__((0,x.x)+1) y;
36 __typeof__(x.x<<1) y;
37 int y;
38
39 struct PR8025 {
40 double : 2; // expected-error{{anonymous bit-field has non-integral type 'double'}}
41 };
42
43 struct Test4 {
44 unsigned bitX : 4;
45 unsigned bitY : 4;
46 unsigned var;
47 };
test4(struct Test4 * t)48 void test4(struct Test4 *t) {
49 (void) sizeof(t->bitX); // expected-error {{invalid application of 'sizeof' to bit-field}}
50 (void) sizeof((t->bitY)); // expected-error {{invalid application of 'sizeof' to bit-field}}
51 (void) sizeof(t->bitX = 4); // not a bitfield designator in C
52 (void) sizeof(t->bitX += 4); // not a bitfield designator in C
53 (void) sizeof((void) 0, t->bitX); // not a bitfield designator in C
54 (void) sizeof(t->var ? t->bitX : t->bitY); // not a bitfield designator in C
55 (void) sizeof(t->var ? t->bitX : t->bitX); // not a bitfield designator in C
56 }
57