File: struct-layout-1.c

package info (click to toggle)
gcc-arm-none-eabi 15%3A8-2019-q3-1
  • links: PTS, VCS
  • area: main
  • in suites: bullseye
  • size: 571,828 kB
  • sloc: ansic: 2,937,651; cpp: 881,644; ada: 597,189; makefile: 65,528; asm: 56,499; xml: 46,621; exp: 24,747; sh: 19,684; python: 7,256; pascal: 4,370; awk: 3,497; perl: 2,695; yacc: 316; ml: 285; f90: 234; lex: 198; objc: 194; haskell: 119
file content (77 lines) | stat: -rw-r--r-- 956 bytes parent folder | download | duplicates (10) 
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
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
 
/* { dg-do run } */
/* { dg-options "-std=gnu99" } */

/* This test is based on the test from ../dfp/.  */

#include <stdarg.h>

extern void abort (void);

struct S1
{
  long _Fract a[0];
};

struct S2
{
  struct
  {
    long _Fract e;
  } b[0];
};

struct S3
{
  union
  {
    long _Fract c;
  } a[0];
};

struct S4
{
  int a[0];
  long _Fract b[0];
};

struct S5
{
  union
  {
    long _Fract c[0];
  } a;
};

int check_var (int z, ...)
{
  long long result;
  va_list ap;
  va_start (ap, z);
  va_arg (ap, struct S1);
  result = va_arg (ap, long long);
  va_end (ap);

  return (result == 2LL);
}

int main ()
{
  struct S1 s1;
  struct S2 s2;
  struct S3 s3;
  struct S4 s4;
  struct S5 s5;

  if (check_var (2, s1, 2LL) == 0)
    abort ();
  if (check_var (2, s2, 2LL) == 0)
    abort ();
  if (check_var (2, s3, 2LL) == 0)
    abort ();
  if (check_var (2, s4, 2LL) == 0)
    abort ();
  if (check_var (2, s5, 2LL) == 0)
    abort ();

  return 0;
}