open Lib;;
let x = ref 32 in
incr x;
if !x <> 33 then raise Not_found;
x
;;

(**
       0 CONSTINT 42
       2 PUSHACC0 
       3 MAKEBLOCK1 0
       5 POP 1
       7 SETGLOBAL Lib
       9 CONSTINT 32
      11 MAKEBLOCK1 0
      13 PUSHACC0 
      14 OFFSETREF 1
      16 CONSTINT 33
      18 PUSHACC1 
      19 GETFIELD0 
      20 NEQ 
      21 BRANCHIFNOT 28
      23 GETGLOBAL Not_found
      25 MAKEBLOCK1 0
      27 RAISE 
      28 ACC0 
      29 POP 1
      31 ATOM0 
      32 SETGLOBAL T260-offsetref
      34 STOP 
**)