gcc/testsuite/c-c++-common/pr88664-2.c

   1 /* PR c/88664.  */
   2 /* { dg-do compile } */
   3 /* { dg-options "-O" } */
   4
   5 struct data
   6 {
   7   void *ptr;
   8 } __attribute__((packed));
   9
  10 void **
  11 fun1 (struct data *p)
  12 {
  13   return &p->ptr;
  14 /* { dg-warning "may result in an unaligned pointer value" "" { target { ! default_packed } } .-1 } */
  15 }
  16
  17 int *
  18 fun2 (struct data *p, int *x)
  19 {
  20   return p ? (*x = 1, (int *) &p->ptr) : (int *) 0;
  21 /* { dg-warning "may result in an unaligned pointer value" "" { target { ! default_packed } } .-1 } */
  22 }