open Lib;;
let x = true in
();
if not x then raise Not_found
;;

(**
       0 CONSTINT 42
       2 PUSHACC0 
       3 MAKEBLOCK1 0
       5 POP 1
       7 SETGLOBAL Lib
       9 CONST1 
      10 PUSHCONST0 
      11 ACC0 
      12 BOOLNOT 
      13 BRANCHIFNOT 20
      15 GETGLOBAL Not_found
      17 MAKEBLOCK1 0
      19 RAISE 
      20 POP 1
      22 ATOM0 
      23 SETGLOBAL T090-acc0
      25 STOP 
**)