File: pragma-pack-2.c

package info (click to toggle)
llvm-toolchain-9 1%3A9.0.1-16.1
  • links: PTS, VCS
  • area: main
  • in suites: bullseye
  • size: 882,388 kB
  • sloc: cpp: 4,167,636; ansic: 714,256; asm: 457,610; python: 155,927; objc: 65,094; sh: 42,856; lisp: 26,908; perl: 7,786; pascal: 7,722; makefile: 6,881; ml: 5,581; awk: 3,648; cs: 2,027; xml: 888; javascript: 381; ruby: 156
file content (60 lines) | stat: -rw-r--r-- 1,044 bytes parent folder | download | duplicates (25)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
// RUN: %clang_cc1 -triple i686-apple-darwin9 %s -fsyntax-only -verify
// expected-no-diagnostics

#include <stddef.h>

#pragma pack(4)

// Baseline
struct s0 {
  char f0;
  int  f1;
};
extern int a0[offsetof(struct s0, f1) == 4 ? 1 : -1];

#pragma pack(push, 2)
struct s1 {
  char f0;
  int  f1;
};
extern int a1[offsetof(struct s1, f1) == 2 ? 1 : -1];
#pragma pack(pop)

#pragma pack(1)
struct s3_0 {
  char f0;
  int f1;
};
#pragma pack()
struct s3_1 {
  char f0;
  int f1;
};
extern int a3_0[offsetof(struct s3_0, f1) == 1 ? 1 : -1];
extern int a3_1[offsetof(struct s3_1, f1) == 4 ? 1 : -1];

// pack(0) is like pack()
#pragma pack(1)
struct s4_0 {
  char f0;
  int f1;
};
#pragma pack(0)
struct s4_1 {
  char f0;
  int f1;
};
extern int a4_0[offsetof(struct s4_0, f1) == 1 ? 1 : -1];
extern int a4_1[offsetof(struct s4_1, f1) == 4 ? 1 : -1];

void f() {
  #pragma pack(push, 2)
  struct s5_0 {
    char f0;
    struct s2_4_0 { 
      int f0;
    } f1;
  };
  #pragma pack(pop)
  extern int s5_0[offsetof(struct s5_0, f1) == 2 ? 1 : -1];
}