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/* { dg-do run { target *-*-linux* *-*-solaris* } } */

/* { dg-options -O2 } */

#include <sys/types.h>

#include <sys/mman.h>

#include <unistd.h>

#include <stdlib.h>

struct S { long x __attribute__((packed)); }; /* { dg-warning "attribute ignored" "" { target default_packed } } */

volatile long sink;

void foo (struct S *s)

{

  sink = s->x;

}

int main ()

{

  size_t ps = getpagesize ();

  char *ptr, *page;

  struct S *s;

  ptr = malloc (3*ps);

  page = (char *)(((size_t)ptr + (ps - 1)) & -ps);

  munmap (page + ps, ps);

  s = (struct S *)(page + ps - sizeof(struct S));

  foo(s);

  return 0;

}