blob: 32db09195273908a6807302814f11a86e8f85b45 (
plain)
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
|
/* { dg-do run } */
/* { dg-options "-O2 -fomit-frame-pointer" } */
/* { dg-options "-O2 -fomit-frame-pointer -march=i386" { target { { i?86-*-* x86_64-*-* } && ilp32 } } } */
extern void abort (void);
extern void exit (int);
struct S
{
int *a;
unsigned char *b, c;
};
int u, v, w;
void
foo (unsigned short x)
{
u += x;
}
int
bar (struct S **x, int *y)
{
w += *y;
*y = w + 25;
return 0;
}
int
baz (struct S **x)
{
struct S *y = *x;
unsigned char *a = y->b;
foo (*a);
if (__builtin_expect (y->c != 0 || y->a == &v, 0))
return 1;
if (__builtin_expect (*a == 1, 0))
{
int a, b = bar (x, &a);
if (a)
return b;
}
return 0;
}
int
main (void)
{
struct S a, *b = &a;
unsigned char c;
__builtin_memset (b, 0, sizeof (a));
a.a = &v;
a.b = &c;
if (baz (&b) != 1)
abort ();
exit (0);
}
|
