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