1/* { dg-do run { target *-*-linux* *-*-gnu* *-*-solaris* } } */
2/* { dg-options -O2 } */
3
4#include <sys/types.h>
5#include <sys/mman.h>
6#include <unistd.h>
7#include <stdlib.h>
8
9struct S { long x __attribute__((packed)); }; /* { dg-warning "attribute ignored" "" { target default_packed } } */
10volatile long sink;
11
12void foo (struct S *s)
13{
14  sink = s->x;
15}
16
17int main ()
18{
19  size_t ps = getpagesize ();
20  char *ptr, *page;
21  struct S *s;
22
23  ptr = malloc (3*ps);
24  page = (char *)(((__UINTPTR_TYPE__)ptr + (ps - 1)) & -ps);
25  munmap (page + ps, ps);
26
27  s = (struct S *)(page + ps - sizeof(struct S));
28  foo(s);
29
30  return 0;
31}
32