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|
(* TEST
expect;
*)
type (_, _) eq = Refl : ('a, 'a) eq;;
let foo (type a) (x : (a, int) eq) (a : a) p =
let module M = struct type t = a let x : t = a end in
if p then a else M.x;;
[%%expect{|
type (_, _) eq = Refl : ('a, 'a) eq
val foo : ('a, int) eq -> 'a -> bool -> 'a = <fun>
|}]
let foo (type a) (x : (a, int) eq) (a : a) p =
let module M = struct type t = a let x : t = a end in
let Refl = x in
if p then a else M.x;;
[%%expect{|
val foo : ('a, int) eq -> 'a -> bool -> 'a = <fun>
|}]
let foo (type a) (x : (a, int) eq) (a : a) p =
let module M = struct type 'a t = a let x : 'a t = a end in
let Refl = x in
if p then a else M.x;;
[%%expect{|
val foo : ('a, int) eq -> 'a -> bool -> 'a = <fun>
|}]
let foo (type a) (x : (a, int) eq) (a : a) p =
let module M = struct type 'a t = 'a let x : a t = a end in
let Refl = x in
if p then a else M.x;;
[%%expect{|
val foo : ('a, int) eq -> 'a -> bool -> 'a = <fun>
|}]
type ('a,'b) fst = 'a
let foo4 (type a) (x : (a, int) eq) (a : a) p =
let module M : sig type t = (a,bool) fst val x : t end =
struct type t = (a,bool) fst let x = a end in
let Refl = x in
if p then a else M.x;;
[%%expect{|
type ('a, 'b) fst = 'a
val foo4 : ('a, int) eq -> 'a -> bool -> 'a = <fun>
|}]
|
