1// RUN: %clang_cc1 -triple i686-apple-darwin9 %s -fsyntax-only -verify
2// expected-no-diagnostics
3
4#include <stddef.h>
5
6#pragma pack(4)
7
8// Baseline
9struct s0 {
10  char f0;
11  int  f1;
12};
13extern int a0[offsetof(struct s0, f1) == 4 ? 1 : -1];
14
15#pragma pack(push, 2)
16struct s1 {
17  char f0;
18  int  f1;
19};
20extern int a1[offsetof(struct s1, f1) == 2 ? 1 : -1];
21#pragma pack(pop)
22
23#pragma pack(1)
24struct s3_0 {
25  char f0;
26  int f1;
27};
28#pragma pack()
29struct s3_1 {
30  char f0;
31  int f1;
32};
33extern int a3_0[offsetof(struct s3_0, f1) == 1 ? 1 : -1];
34extern int a3_1[offsetof(struct s3_1, f1) == 4 ? 1 : -1];
35
36// pack(0) is like pack()
37#pragma pack(1)
38struct s4_0 {
39  char f0;
40  int f1;
41};
42#pragma pack(0)
43struct s4_1 {
44  char f0;
45  int f1;
46};
47extern int a4_0[offsetof(struct s4_0, f1) == 1 ? 1 : -1];
48extern int a4_1[offsetof(struct s4_1, f1) == 4 ? 1 : -1];
49
50void f() {
51  #pragma pack(push, 2)
52  struct s5_0 {
53    char f0;
54    struct s2_4_0 {
55      int f0;
56    } f1;
57  };
58  #pragma pack(pop)
59  extern int s5_0[offsetof(struct s5_0, f1) == 2 ? 1 : -1];
60}
61