1  /* { dg-do compile } */
       2  /* { dg-options "-O -fdump-tree-cddce1" } */
       3  
       4  __SIZE_TYPE__
       5  fx (char *a, __SIZE_TYPE__ sz)
       6  {
       7    char *b = a + sz;
       8    /* The first forwprop pass should optimize this to return sz;  */
       9    return b - a;
      10  }
      11  
      12  /* { dg-final { scan-tree-dump "return sz" "cddce1" } } */