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      1 // RUN: %clang_cc1 -triple i686-apple-darwin9 %s -fsyntax-only -verify
      2 
      3 #include <stddef.h>
      4 
      5 #pragma pack(4)
      6 
      7 // Baseline
      8 struct s0 {
      9   char f0;
     10   int  f1;
     11 };
     12 extern int a0[offsetof(struct s0, f1) == 4 ? 1 : -1];
     13 
     14 #pragma pack(push, 2)
     15 struct s1 {
     16   char f0;
     17   int  f1;
     18 };
     19 extern int a1[offsetof(struct s1, f1) == 2 ? 1 : -1];
     20 #pragma pack(pop)
     21 
     22 // Test scope of definition
     23 
     24 #pragma pack(push, 2)
     25 struct s2_0 {
     26 #pragma pack(pop)
     27   char f0;
     28   int  f1;
     29 };
     30 extern int a2_0[offsetof(struct s2_0, f1) == 2 ? 1 : -1];
     31 
     32 struct s2_1 {
     33   char f0;
     34 #pragma pack(push, 2)
     35   int  f1;
     36 #pragma pack(pop)
     37 };
     38 extern int a2_1[offsetof(struct s2_1, f1) == 4 ? 1 : -1];
     39 
     40 struct s2_2 {
     41   char f0;
     42   int  f1;
     43 #pragma pack(push, 2)
     44 };
     45 #pragma pack(pop)
     46 extern int a2_2[offsetof(struct s2_2, f1) == 4 ? 1 : -1];
     47 
     48 struct s2_3 {
     49   char f0;
     50 #pragma pack(push, 2)
     51   struct s2_3_0 {
     52 #pragma pack(pop)
     53     int f0;
     54   } f1;
     55 };
     56 extern int a2_3[offsetof(struct s2_3, f1) == 2 ? 1 : -1];
     57 
     58 struct s2_4 {
     59   char f0;
     60   struct s2_4_0 {
     61     int f0;
     62 #pragma pack(push, 2)
     63   } f1;
     64 #pragma pack(pop)
     65 };
     66 extern int a2_4[offsetof(struct s2_4, f1) == 4 ? 1 : -1];
     67 
     68 #pragma pack(1)
     69 struct s3_0 {
     70   char f0;
     71   int f1;
     72 };
     73 #pragma pack()
     74 struct s3_1 {
     75   char f0;
     76   int f1;
     77 };
     78 extern int a3_0[offsetof(struct s3_0, f1) == 1 ? 1 : -1];
     79 extern int a3_1[offsetof(struct s3_1, f1) == 4 ? 1 : -1];
     80 
     81 // pack(0) is like pack()
     82 #pragma pack(1)
     83 struct s4_0 {
     84   char f0;
     85   int f1;
     86 };
     87 #pragma pack(0)
     88 struct s4_1 {
     89   char f0;
     90   int f1;
     91 };
     92 extern int a4_0[offsetof(struct s4_0, f1) == 1 ? 1 : -1];
     93 extern int a4_1[offsetof(struct s4_1, f1) == 4 ? 1 : -1];
     94