gcc/testsuite/gcc.dg/pr94436.c

   1 /* PR middle-end/94436 */
   2 /* { dg-do compile } */
   3 /* { dg-options "-Wincompatible-pointer-types" } */
   4
   5 struct S { int s; };
   6 int foo (struct S *);
   7
   8 int
   9 bar (void)
  10 {
  11   int s = 0;
  12   return foo ((struct S *) ((char *) &s - (char *) &((struct S *) 0)->s));      /* { dg-bogus "from incompatible pointer type" } */
  13 }