gcc/testsuite/c-c++-common/pr51628-33.c

   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 void bar (int *);
  13
  14 void
  15 foo (struct pair_t *p)
  16 {
  17   bar (p ? p->i : (int *) 0);
  18 /* { dg-warning "may result in an unaligned pointer value" "" { target { ! default_packed } } .-1 } */
  19 }