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|
(* TEST
expect;
*)
let r = ref None
module M : sig
val write : ([< `A of string | `B of int ] -> unit)
end = struct
let write x =
match x with `A _ | `B _ -> r := Some x
end
[%%expect{|
val r : '_weak1 option ref = {contents = None}
Lines 5-8, characters 6-3:
5 | ......struct
6 | let write x =
7 | match x with `A _ | `B _ -> r := Some x
8 | end
Error: Signature mismatch:
Modules do not match:
sig
val write :
([< `A of '_weak3 | `B of '_weak4 ] as '_weak2) -> unit
end
is not included in
sig val write : [< `A of string | `B of int ] -> unit end
Values do not match:
val write : ([< `A of '_weak3 | `B of '_weak4 ] as '_weak2) -> unit
is not included in
val write : [< `A of string | `B of int ] -> unit
The type ([< `A of '_weak3 | `B of '_weak4 ] as '_weak2) -> unit
is not compatible with the type [< `A of string | `B of int ] -> unit
Type [< `A of '_weak3 | `B of '_weak4 ] as '_weak2
is not compatible with type [< `A of string | `B of int ]
|}]
|
