1 /* PR c/51628. */
2 /* { dg-do compile } */
3 /* { dg-options "-O" } */
4
5 struct pair_t
6 {
7 char x;
8 int i[4];
9 } __attribute__ ((packed, aligned (4)));
10
11 extern struct pair_t p;
12 extern int *x;
13 extern void bar (int *);
14
15 int *addr = p.i;
16 /* { dg-warning "may result in an unaligned pointer value" "" { target { ! default_packed } } .-1 } */
17
18 int *
foo(struct pair_t * p)19 foo (struct pair_t *p)
20 {
21 int *p0, *p1;
22 p0 = p->i;
23 /* { dg-warning "may result in an unaligned pointer value" "" { target { ! default_packed } } .-1 } */
24 bar (p0);
25 p1 = &p->i[1];
26 /* { dg-warning "may result in an unaligned pointer value" "" { target { ! default_packed } } .-1 } */
27 bar (p1);
28 bar (p->i);
29 /* { dg-warning "may result in an unaligned pointer value" "" { target { ! default_packed } } .-1 } */
30 bar (&p->i[2]);
31 /* { dg-warning "may result in an unaligned pointer value" "" { target { ! default_packed } } .-1 } */
32 x = p->i;
33 /* { dg-warning "may result in an unaligned pointer value" "" { target { ! default_packed } } .-1 } */
34 return &p->i[3];
35 /* { dg-warning "may result in an unaligned pointer value" "" { target { ! default_packed } } .-1 } */
36 }
37