(* TEST
 ocamlrunparam += "l=100000";
*)

let rec f x =
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  let x = x+x in  let x = x+x in  let x = x+x in  let x = x+x in
  let x = x+x in  let x = x+x in  let x = x+x in  let x = x+x in
  let x = x+x in  let x = x+x in  let x = x+x in  let x = x+x in
  let x = x+x in  let x = x+x in  let x = x+x in  let x = x+x in
  let x = x+x in  let x = x+x in  let x = x+x in  let x = x+x in
  let x = x+x in  let x = x+x in  let x = x+x in  let x = x+x in
  let x = x+x in  let x = x+x in  let x = x+x in  let x = x+x in
  let x = x+x in  let x = x+x in  let x = x+x in  let x = x+x in
  let x = x+x in  let x = x+x in  let x = x+x in  let x = x+x in
  let x = x+x in  let x = x+x in  let x = x+x in  let x = x+x in
  let x = x+x in  let x = x+x in  let x = x+x in  let x = x+x in
  let x = x+x in  let x = x+x in  let x = x+x in  let x = x+x in
  let x = x+x in  let x = x+x in  let x = x+x in  let x = x+x in
  let x = x+x in  let x = x+x in  let x = x+x in  let x = x+x in
  let x = x+x in  let x = x+x in  let x = x+x in  let x = x+x in
  let x = x+x in  let x = x+x in  let x = x+x in  let x = x+x in
  let x = x+x in  let x = x+x in  let x = x+x in  let x = x+x in
  let x = x+x in  let x = x+x in  let x = x+x in  let x = x+x in
  let x = x+x in  let x = x+x in  let x = x+x in  let x = x+x in
  let x = x+x in  let x = x+x in  let x = x+x in  let x = x+x in
  let x = x+x in  let x = x+x in  let x = x+x in  let x = x+x in
  let x = x+x in  let x = x+x in  let x = x+x in  let x = x+x in
  let x = x+x in  let x = x+x in  let x = x+x in  let x = x+x in
  let x = x+x in  let x = x+x in  let x = x+x in  let x = x+x in
  let x = x+x in  let x = x+x in  let x = x+x in  let x = x+x in
  let x = x+x in  let x = x+x in  let x = x+x in  let x = x+x in
  let x = x+x in  let x = x+x in  let x = x+x in  let x = x+x in
  let x = x+x in  let x = x+x in  let x = x+x in  let x = x+x in
  let x = x+x in  let x = x+x in  let x = x+x in  let x = x+x in
  let x = x+x in  let x = x+x in  let x = x+x in  let x = x+x in
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  let x = x+x in  let x = x+x in  let x = x+x in  let x = x+x in
  let x = x+x in  let x = x+x in  let x = x+x in  let x = x+x in
  let x = x+x in  let x = x+x in  let x = x+x in  let x = x+x in
  let x = x+x in  let x = x+x in  let x = x+x in  let x = x+x in
  let x = x+x in  let x = x+x in  let x = x+x in  let x = x+x in
  let x = x+x in  let x = x+x in  let x = x+x in  let x = x+x in
  let x = x+x in  let x = x+x in  let x = x+x in  let x = x+x in
  let x = x+x in  let x = x+x in  let x = x+x in  let x = x+x in
  let x = x+x in  let x = x+x in  let x = x+x in  let x = x+x in
  let x = x+x in  let x = x+x in  let x = x+x in  let x = x+x in
  let x = x+x in  let x = x+x in  let x = x+x in  let x = x+x in
  let x = x+x in  let x = x+x in  let x = x+x in  let x = x+x in
  let x = x+x in  let x = x+x in  let x = x+x in  let x = x+x in
  let x = x+x in  let x = x+x in  let x = x+x in  let x = x+x in
  let x = x+x in  let x = x+x in  let x = x+x in  let x = x+x in
  let x = x+x in  let x = x+x in  let x = x+x in  let x = x+x in
  let x = x+x in  let x = x+x in  let x = x+x in  let x = x+x in
  let x = x+x in  let x = x+x in  let x = x+x in  let x = x+x in
  let x = x+x in  let x = x+x in  let x = x+x in  let x = x+x in
  let x = x+x in  let x = x+x in  let x = x+x in  let x = x+x in
  let x = x+x in  let x = x+x in  let x = x+x in  let x = x+x in
  let x = x+x in  let x = x+x in  let x = x+x in  let x = x+x in
  let x = x+x in  let x = x+x in  let x = x+x in  let x = x+x in
  let x = x+x in  let x = x+x in  let x = x+x in  let x = x+x in
  let x = x+x in  let x = x+x in  let x = x+x in  let x = x+x in
  let x = x+x in  let x = x+x in  let x = x+x in  let x = x+x in
  let x = x+x in  let x = x+x in  let x = x+x in  let x = x+x in
  let x = x+x in  let x = x+x in  let x = x+x in  let x = x+x in
  let x = x+x in  let x = x+x in  let x = x+x in  let x = x+x in
  let x = x+x in  let x = x+x in  let x = x+x in  let x = x+x in
  let x = x+x in  let x = x+x in  let x = x+x in  let x = x+x in
  let x = x+x in
  let _ = f x in
  ()

let _ =
  try f 1
  with Stack_overflow -> Printf.printf "OK\n"