Re: [Caml-list] Suppress warning from within Ocaml source file

[Jeremy Yallop <yallop@gmail.com>]

On 12 November 2015 at 18:39, Virgile Prevosto <virgile.prevosto@m4x.org> wrote:
> But in the record case, the expr in { expr with ... } will indeed be
> evaluated (thus is not dead), but its result will never be used, which
> is barely better.

it's not just the result that's unused: the type of 'expr' isn't used
either when all the fields are specified:

   # {"one" with contents = 2};;
   Characters 0-25:
     {"one" with contents = 2};;
     ^^^^^^^^^^^^^^^^^^^^^^^^^
   Warning 23: all the fields are explicitly listed in this record:
   the 'with' clause is useless.
   - : int ref = {contents = 2}