I reported this a couple of years ago:
http://caml.inria.fr/mantis/view.php?id=4904


On Tue, Sep 17, 2013 at 2:55 PM, Török Edwin <edwin+ml-ocaml@etorok.net> wrote:
Hi,

The following is accepted:

let foo ~x ~x () = ()
let () =
  foo ~x:4 ~x:5 ()

I tried -w A and I got no warnings with OCaml 4.01.0, is this intended?
Should I file a feature request to get a warning for this situation?

(How I got in this situation: I did an overly eager search/replace that caused the duplicate ~x)

Best regards,
--Edwin

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