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
|
/* { dg-do run } */
/* { dg-shouldfail "ubsan" } */
/* { dg-options "-fsanitize=undefined -fno-sanitize-recover=undefined" } */
int q, r;
void *a, *b, *c = (void *) &q, *d, *e, *f = (void *) &q, *g, *h;
__attribute__((returns_nonnull, nonnull (1, 3)))
void *
foo (void *p, void *q, void *r)
{
a = p;
b = r;
return q;
}
int
bar (const void *a, const void *b)
{
int c = *(const int *) a;
int d = *(const int *) b;
return c - d;
}
int
main ()
{
asm volatile ("" : : : "memory");
d = foo (c, (void *) &r, c);
e = foo (e, c, f);
g = foo (c, f, g);
__builtin_memset (d, '\0', q);
return 0;
}
/* { dg-output "\.c:30:\[0-9]*:\[^\n\r]*null pointer passed as argument 1, which is declared to never be null" } */
|
