xref: /minix3/external/bsd/llvm/dist/clang/test/Sema/pragma-pack-2.c (revision f4a2713ac843a11c696ec80c0a5e3e5d80b4d338) 
1*f4a2713aSLionel Sambuc // RUN: %clang_cc1 -triple i686-apple-darwin9 %s -fsyntax-only -verify
2*f4a2713aSLionel Sambuc // expected-no-diagnostics
3*f4a2713aSLionel Sambuc 
4*f4a2713aSLionel Sambuc #include <stddef.h>
5*f4a2713aSLionel Sambuc 
6*f4a2713aSLionel Sambuc #pragma pack(4)
7*f4a2713aSLionel Sambuc 
8*f4a2713aSLionel Sambuc // Baseline
9*f4a2713aSLionel Sambuc struct s0 {
10*f4a2713aSLionel Sambuc   char f0;
11*f4a2713aSLionel Sambuc   int  f1;
12*f4a2713aSLionel Sambuc };
13*f4a2713aSLionel Sambuc extern int a0[offsetof(struct s0, f1) == 4 ? 1 : -1];
14*f4a2713aSLionel Sambuc 
15*f4a2713aSLionel Sambuc #pragma pack(push, 2)
16*f4a2713aSLionel Sambuc struct s1 {
17*f4a2713aSLionel Sambuc   char f0;
18*f4a2713aSLionel Sambuc   int  f1;
19*f4a2713aSLionel Sambuc };
20*f4a2713aSLionel Sambuc extern int a1[offsetof(struct s1, f1) == 2 ? 1 : -1];
21*f4a2713aSLionel Sambuc #pragma pack(pop)
22*f4a2713aSLionel Sambuc 
23*f4a2713aSLionel Sambuc #pragma pack(1)
24*f4a2713aSLionel Sambuc struct s3_0 {
25*f4a2713aSLionel Sambuc   char f0;
26*f4a2713aSLionel Sambuc   int f1;
27*f4a2713aSLionel Sambuc };
28*f4a2713aSLionel Sambuc #pragma pack()
29*f4a2713aSLionel Sambuc struct s3_1 {
30*f4a2713aSLionel Sambuc   char f0;
31*f4a2713aSLionel Sambuc   int f1;
32*f4a2713aSLionel Sambuc };
33*f4a2713aSLionel Sambuc extern int a3_0[offsetof(struct s3_0, f1) == 1 ? 1 : -1];
34*f4a2713aSLionel Sambuc extern int a3_1[offsetof(struct s3_1, f1) == 4 ? 1 : -1];
35*f4a2713aSLionel Sambuc 
36*f4a2713aSLionel Sambuc // pack(0) is like pack()
37*f4a2713aSLionel Sambuc #pragma pack(1)
38*f4a2713aSLionel Sambuc struct s4_0 {
39*f4a2713aSLionel Sambuc   char f0;
40*f4a2713aSLionel Sambuc   int f1;
41*f4a2713aSLionel Sambuc };
42*f4a2713aSLionel Sambuc #pragma pack(0)
43*f4a2713aSLionel Sambuc struct s4_1 {
44*f4a2713aSLionel Sambuc   char f0;
45*f4a2713aSLionel Sambuc   int f1;
46*f4a2713aSLionel Sambuc };
47*f4a2713aSLionel Sambuc extern int a4_0[offsetof(struct s4_0, f1) == 1 ? 1 : -1];
48*f4a2713aSLionel Sambuc extern int a4_1[offsetof(struct s4_1, f1) == 4 ? 1 : -1];
49*f4a2713aSLionel Sambuc 
f()50*f4a2713aSLionel Sambuc void f() {
51*f4a2713aSLionel Sambuc   #pragma pack(push, 2)
52*f4a2713aSLionel Sambuc   struct s5_0 {
53*f4a2713aSLionel Sambuc     char f0;
54*f4a2713aSLionel Sambuc     struct s2_4_0 {
55*f4a2713aSLionel Sambuc       int f0;
56*f4a2713aSLionel Sambuc     } f1;
57*f4a2713aSLionel Sambuc   };
58*f4a2713aSLionel Sambuc   #pragma pack(pop)
59*f4a2713aSLionel Sambuc   extern int s5_0[offsetof(struct s5_0, f1) == 2 ? 1 : -1];
60*f4a2713aSLionel Sambuc }
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