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
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
|
/* Test C11 alignment support. Test valid code using stdalign.h. */
/* { dg-do run } */
/* { dg-options "-std=c11 -pedantic-errors" } */
#include <stdalign.h>
#include <stddef.h>
extern int strcmp (const char *, const char *);
extern void exit (int);
extern void abort (void);
alignas (alignof (max_align_t)) char c;
extern alignas (max_align_t) char c;
extern char c;
extern alignas (max_align_t) short s;
alignas (max_align_t) short s;
alignas (int) int i;
extern int i;
alignas (max_align_t) long l;
alignas (max_align_t) long long ll;
alignas (max_align_t) float f;
alignas (max_align_t) double d;
alignas (max_align_t) _Complex long double cld;
alignas (0) alignas (int) alignas (char) char ca[10];
alignas ((int) alignof (max_align_t) + 0) int x;
enum e { E = alignof (max_align_t) };
alignas (E) int y;
void
func (void)
{
alignas (max_align_t) long long auto_ll;
}
/* Valid, but useless. */
alignas (0) struct s; /* { dg-warning "useless" } */
#ifndef alignas
#error "alignas not defined"
#endif
#ifndef alignof
#error "alignof not defined"
#endif
#ifndef __alignas_is_defined
#error "__alignas_is_defined not defined"
#endif
#if __alignas_is_defined != 1
#error "__alignas_is_defined not 1"
#endif
#ifndef __alignof_is_defined
#error "__alignof_is_defined not defined"
#endif
#if __alignof_is_defined != 1
#error "__alignof_is_defined not 1"
#endif
#define str(x) #x
#define xstr(x) str(x)
const char *s1 = xstr(alignas);
const char *s2 = xstr(alignof);
const char *s3 = xstr(__alignas_is_defined);
const char *s4 = xstr(__alignof_is_defined);
int
main (void)
{
if (strcmp (s1, "_Alignas") != 0)
abort ();
if (strcmp (s2, "_Alignof") != 0)
abort ();
if (strcmp (s3, "1") != 0)
abort ();
if (strcmp (s4, "1") != 0)
abort ();
}
|
