File: marshal.ml

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(* TEST
 *)

open Effect
open Effect.Deep

type _ t += E : string t

let _ =
  try_with perform E
  { effc = fun (type a) (e : a t) ->
      Some (fun k ->
          (* We have to make sure that neither the match nor the call
             to Marshal.to_string are eliminated, so we call
             print_string and we print the result of the marshalling
             function. *)
          match print_string "";
            Stdlib.Marshal.to_string k [] with
          | x -> Printf.printf "%S" x; assert false
          | exception (Invalid_argument _) -> print_endline "ok"; ""
          ) }