1  /* { dg-do compile } */
       2  /* { dg-options "-O -fdump-tree-optimized-raw" } */
       3  
       4  int f(int *a, int *b, int *c){
       5    if(sizeof(__SIZE_TYPE__) != sizeof(__PTRDIFF_TYPE__)) return 2;
       6    __SIZE_TYPE__ s = b - a;
       7    __SIZE_TYPE__ t = c - a;
       8    return s < t;
       9  }
      10  
      11  /* { dg-final { scan-tree-dump-not "exact_div_expr" "optimized" } } */