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
|
typedef __SIZE_TYPE__ size_t;
extern void *memcpy (void *__restrict, const void *__restrict, size_t);
extern void abort (void);
extern void exit (int);
typedef struct t
{
unsigned a : 16;
unsigned b : 8;
unsigned c : 8;
long d[4];
} *T;
typedef struct {
long r[3];
} U;
T bar (U, unsigned int);
T foo (T x)
{
U d, u;
memcpy (&u, &x->d[1], sizeof u);
d = u;
return bar (d, x->b);
}
T baz (T x)
{
U d, u;
d.r[0] = 0x123456789;
d.r[1] = 0xfedcba987;
d.r[2] = 0xabcdef123;
memcpy (&u, &x->d[1], sizeof u);
d = u;
return bar (d, x->b);
}
T bar (U d, unsigned int m)
{
if (d.r[0] != 21 || d.r[1] != 22 || d.r[2] != 23)
abort ();
return 0;
}
struct t t = { 26, 0, 0, { 0, 21, 22, 23 }};
int main (void)
{
baz (&t);
foo (&t);
exit (0);
}
|
