struct-packed-align.c revision abb575866059c9bb74fe4aa32372f002143fa87c 
1// RUN: clang %s -fsyntax-only -verify
2
3// Packed structs.
4struct s {
5    char a;
6    int b  __attribute__((packed));
7    char c;
8    int d;
9};
10
11extern int a1[sizeof(struct s) == 12 ? 1 : -1];
12extern int a2[__alignof(struct s) == 4 ? 1 : -1];
13
14struct __attribute__((packed)) packed_s {
15    char a;
16    int b  __attribute__((packed));
17    char c;
18    int d;
19};
20
21extern int b1[sizeof(struct packed_s) == 10 ? 1 : -1];
22extern int b2[__alignof(struct packed_s) == 1 ? 1 : -1];
23
24struct fas {
25    char a;
26    int b[];
27};
28
29extern int c1[sizeof(struct fas) == 4 ? 1 : -1];
30extern int c2[__alignof(struct fas) == 4 ? 1 : -1];
31
32struct __attribute__((packed)) packed_fas {
33    char a;
34    int b[];
35};
36
37extern int d1[sizeof(struct packed_fas) == 1 ? 1 : -1];
38extern int d2[__alignof(struct packed_fas) == 1 ? 1 : -1];
39
40// Alignment
41
42struct __attribute__((aligned(8))) as1 {
43    char c;
44};
45
46extern int e1[sizeof(struct as1) == 8 ? 1 : -1];
47extern int e2[__alignof(struct as1) == 8 ? 1 : -1];
48
49struct as2 {
50    char c;
51    int __attribute__((aligned(8))) a;
52};
53
54extern int f1[sizeof(struct as2) == 16 ? 1 : -1];
55extern int f2[__alignof(struct as2) == 8 ? 1 : -1];
56
57struct __attribute__((packed)) as3 {
58    char c;
59    int a;
60    int __attribute__((aligned(8))) b;
61};
62
63extern int g1[sizeof(struct as3) == 16 ? 1 : -1];
64extern int g2[__alignof(struct as3) == 8 ? 1 : -1];
65
66
67// rdar://5921025
68struct packedtest {
69  int ted_likes_cheese;
70  void *args[] __attribute__((packed));
71};
72