view tests/open.ur @ 1742:fca4a6d05ac1

More diagnostic information about some type class resolution failures
author Adam Chlipala <adam@chlipala.net>
date Fri, 04 May 2012 10:33:04 -0400
parents 71bafe66dbe1
children
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structure S = struct
        type t = int
        val x = 0

        structure S' : sig type u val y : t end = struct
                type u = t
                val y = x
        end

        signature Sig = sig
                type t
                val x : t
        end
end

open S.S'
open S
open S'

structure S' : Sig = S