gcc/testsuite/gcc.dg/cast-4.c

   1 /* Test warnings when casting from a constant integer to pointer.
   2    Test with -pedantic-errors.  */
   3 /* Origin: Carlos O'Donell <carlos@codesourcery.com> */
   4 /* { dg-do compile } */
   5 /* { dg-options "-std=gnu99 -pedantic-errors" } */
   6
   7 extern int i;
   8 char c;
   9 void
  10 f (void)
  11 {
  12   c = (char)&i; /* { dg-warning "warning: cast from pointer to integer of different size" } */
  13 }