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|
(* TEST
flags = " -w +A -strict-sequence "
* expect
*)
module Unused : sig
end = struct
type unused = int
end
;;
[%%expect {|
Line 3, characters 2-19:
3 | type unused = int
^^^^^^^^^^^^^^^^^
Warning 34 [unused-type-declaration]: unused type unused.
module Unused : sig end
|}]
module Unused_nonrec : sig
end = struct
type nonrec used = int
type nonrec unused = used
end
;;
[%%expect {|
Line 4, characters 2-27:
4 | type nonrec unused = used
^^^^^^^^^^^^^^^^^^^^^^^^^
Warning 34 [unused-type-declaration]: unused type unused.
module Unused_nonrec : sig end
|}]
module Unused_rec : sig
end = struct
type unused = A of unused
end
;;
[%%expect {|
Line 3, characters 2-27:
3 | type unused = A of unused
^^^^^^^^^^^^^^^^^^^^^^^^^
Warning 34 [unused-type-declaration]: unused type unused.
Line 3, characters 16-27:
3 | type unused = A of unused
^^^^^^^^^^^
Warning 37 [unused-constructor]: unused constructor A.
module Unused_rec : sig end
|}]
module Used_constructor : sig
type t
val t : t
end = struct
type t = T
let t = T
end
;;
[%%expect {|
module Used_constructor : sig type t val t : t end
|}]
module Unused_constructor : sig
type t
end = struct
type t = T
end
;;
[%%expect {|
Line 4, characters 11-12:
4 | type t = T
^
Warning 37 [unused-constructor]: unused constructor T.
module Unused_constructor : sig type t end
|}]
module Unused_constructor_outside_patterns : sig
type t
val nothing : t -> unit
end = struct
type t = T
let nothing = function
| T -> ()
end
;;
[%%expect {|
Line 5, characters 11-12:
5 | type t = T
^
Warning 37 [unused-constructor]: constructor T is never used to build values.
(However, this constructor appears in patterns.)
module Unused_constructor_outside_patterns :
sig type t val nothing : t -> unit end
|}]
module Unused_constructor_exported_private : sig
type t = private T
end = struct
type t = T
end
;;
[%%expect {|
Line 4, characters 11-12:
4 | type t = T
^
Warning 37 [unused-constructor]: constructor T is never used to build values.
Its type is exported as a private type.
module Unused_constructor_exported_private : sig type t = private T end
|}]
module Used_private_constructor : sig
type t
val nothing : t -> unit
end = struct
type t = private T
let nothing = function
| T -> ()
end
;;
[%%expect {|
module Used_private_constructor : sig type t val nothing : t -> unit end
|}]
module Unused_private_constructor : sig
type t
end = struct
type t = private T
end
;;
[%%expect {|
Line 4, characters 19-20:
4 | type t = private T
^
Warning 37 [unused-constructor]: unused constructor T.
module Unused_private_constructor : sig type t end
|}]
module Exported_private_constructor : sig
type t = private T
end = struct
type t = private T
end
;;
[%%expect {|
module Exported_private_constructor : sig type t = private T end
|}]
module Used_exception : sig
val e : exn
end = struct
exception Somebody_uses_me
let e = Somebody_uses_me
end
;;
[%%expect {|
module Used_exception : sig val e : exn end
|}]
module Used_extension_constructor : sig
type t
val t : t
end = struct
type t = ..
type t += Somebody_uses_me
let t = Somebody_uses_me
end
;;
[%%expect {|
module Used_extension_constructor : sig type t val t : t end
|}]
module Unused_exception : sig
end = struct
exception Nobody_uses_me
end
;;
[%%expect {|
Line 3, characters 2-26:
3 | exception Nobody_uses_me
^^^^^^^^^^^^^^^^^^^^^^^^
Warning 38 [unused-extension]: unused exception Nobody_uses_me
module Unused_exception : sig end
|}]
module Unused_extension_constructor : sig
type t = ..
end = struct
type t = ..
type t += Nobody_uses_me
end
;;
[%%expect {|
Line 5, characters 12-26:
5 | type t += Nobody_uses_me
^^^^^^^^^^^^^^
Warning 38 [unused-extension]: unused extension constructor Nobody_uses_me
module Unused_extension_constructor : sig type t = .. end
|}]
module Unused_extension_disabled_warning : sig
type t = ..
end = struct
type t = ..
type t += Dont_warn_on_me [@warning "-unused-extension"] | Nobody_uses_me
end
;;
[%%expect {|
Line 5, characters 59-75:
5 | type t += Dont_warn_on_me [@warning "-unused-extension"] | Nobody_uses_me
^^^^^^^^^^^^^^^^
Warning 38 [unused-extension]: unused extension constructor Nobody_uses_me
module Unused_extension_disabled_warning : sig type t = .. end
|}]
module Unused_exception_outside_patterns : sig
val falsity : exn -> bool
end = struct
exception Nobody_constructs_me
let falsity = function
| Nobody_constructs_me -> true
| _ -> false
end
;;
[%%expect {|
Line 4, characters 2-32:
4 | exception Nobody_constructs_me
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Warning 38 [unused-extension]: exception Nobody_constructs_me is never used to build values.
(However, this constructor appears in patterns.)
module Unused_exception_outside_patterns : sig val falsity : exn -> bool end
|}]
module Unused_extension_outside_patterns : sig
type t = ..
val falsity : t -> bool
end = struct
type t = ..
type t += Noone_builds_me
let falsity = function
| Noone_builds_me -> true
| _ -> false
end
;;
[%%expect {|
Line 6, characters 12-27:
6 | type t += Noone_builds_me
^^^^^^^^^^^^^^^
Warning 38 [unused-extension]: extension constructor Noone_builds_me is never used to build values.
(However, this constructor appears in patterns.)
module Unused_extension_outside_patterns :
sig type t = .. val falsity : t -> bool end
|}]
module Unused_exception_exported_private : sig
type exn += private Private_exn
end = struct
exception Private_exn
end
;;
[%%expect {|
Line 4, characters 2-23:
4 | exception Private_exn
^^^^^^^^^^^^^^^^^^^^^
Warning 38 [unused-extension]: exception Private_exn is never used to build values.
It is exported or rebound as a private extension.
module Unused_exception_exported_private :
sig type exn += private Private_exn end
|}]
module Unused_extension_exported_private : sig
type t = ..
type t += private Private_ext
end = struct
type t = ..
type t += Private_ext
end
;;
[%%expect {|
Line 6, characters 12-23:
6 | type t += Private_ext
^^^^^^^^^^^
Warning 38 [unused-extension]: extension constructor Private_ext is never used to build values.
It is exported or rebound as a private extension.
module Unused_extension_exported_private :
sig type t = .. type t += private Private_ext end
|}]
module Used_private_extension : sig
type t
val nothing : t -> unit
end = struct
type t = ..
type t += private Private_ext
let nothing = function
| Private_ext | _ -> ()
end
;;
[%%expect {|
module Used_private_extension : sig type t val nothing : t -> unit end
|}]
module Unused_private_extension : sig
type t
end = struct
type t = ..
type t += private Private_ext
end
;;
[%%expect {|
Line 5, characters 20-31:
5 | type t += private Private_ext
^^^^^^^^^^^
Warning 38 [unused-extension]: unused extension constructor Private_ext
module Unused_private_extension : sig type t end
|}]
module Exported_private_extension : sig
type t = ..
type t += private Private_ext
end = struct
type t = ..
type t += private Private_ext
end
;;
[%%expect {|
module Exported_private_extension :
sig type t = .. type t += private Private_ext end
|}]
module Pr7438 : sig
end = struct
module type S = sig type t = private [> `Foo] end
module type X =
sig type t = private [> `Foo | `Bar] include S with type t := t end
end;;
[%%expect {|
module Pr7438 : sig end
|}]
module Unused_type_disable_warning : sig
end = struct
type t = A [@@warning "-34"]
end;;
[%%expect {|
Line 3, characters 11-12:
3 | type t = A [@@warning "-34"]
^
Warning 37 [unused-constructor]: unused constructor A.
module Unused_type_disable_warning : sig end
|}]
module Unused_constructor_disable_warning : sig
end = struct
type t = A [@@warning "-37"]
end;;
[%%expect {|
Line 3, characters 2-30:
3 | type t = A [@@warning "-37"]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Warning 34 [unused-type-declaration]: unused type t.
module Unused_constructor_disable_warning : sig end
|}]
module Unused_constructor_disable_one_warning : sig
end = struct
type t = A [@warning "-37"] | B
end;;
[%%expect {|
Line 3, characters 2-33:
3 | type t = A [@warning "-37"] | B
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Warning 34 [unused-type-declaration]: unused type t.
Line 3, characters 30-33:
3 | type t = A [@warning "-37"] | B
^^^
Warning 37 [unused-constructor]: unused constructor B.
module Unused_constructor_disable_one_warning : sig end
|}]
module Unused_record : sig end = struct
type t = { a : int; b : int }
let foo (x : t) = x
let _ = foo
end;;
[%%expect {|
Line 2, characters 13-21:
2 | type t = { a : int; b : int }
^^^^^^^^
Warning 69 [unused-field]: unused record field a.
Line 2, characters 22-29:
2 | type t = { a : int; b : int }
^^^^^^^
Warning 69 [unused-field]: unused record field b.
module Unused_record : sig end
|}]
module Unused_field : sig end = struct
type t = { a : int }
let foo () = { a = 0 }
let _ = foo
end;;
[%%expect {|
Line 2, characters 13-20:
2 | type t = { a : int }
^^^^^^^
Warning 69 [unused-field]: record field a is never read.
(However, this field is used to build or mutate values.)
module Unused_field : sig end
|}]
module Unused_field : sig end = struct
type t = { a : int; b : int; c : int }
let foo () = { a = 0; b = 0; c = 0 }
let bar x = x.a
let baz { c; _ } = c
let _ = foo, bar, baz
end;;
[%%expect {|
Line 2, characters 22-30:
2 | type t = { a : int; b : int; c : int }
^^^^^^^^
Warning 69 [unused-field]: record field b is never read.
(However, this field is used to build or mutate values.)
module Unused_field : sig end
|}]
module Unused_mutable_field : sig end = struct
type t = { a : int; mutable b : int }
let foo () = { a = 0; b = 0 }
let bar x = x.a, x.b
let _ = foo, bar
end;;
[%%expect {|
Line 2, characters 22-37:
2 | type t = { a : int; mutable b : int }
^^^^^^^^^^^^^^^
Warning 69 [unused-field]: mutable record field b is never mutated.
module Unused_mutable_field : sig end
|}]
module Unused_field_exported_private : sig
type t = private { a : int }
end = struct
type t = { a : int }
end;;
[%%expect {|
module Unused_field_exported_private : sig type t = private { a : int; } end
|}]
module Unused_field_exported_private : sig
type t = private { a : int }
end = struct
type t = { a : int }
let foo x = x.a
let _ = foo
end;;
[%%expect {|
module Unused_field_exported_private : sig type t = private { a : int; } end
|}]
module Unused_mutable_field_exported_private : sig
type t = private { a : int; mutable b : int }
end = struct
type t = { a : int; mutable b : int }
let foo () = { a = 0; b = 0 }
let _ = foo
end;;
[%%expect {|
Line 4, characters 22-37:
4 | type t = { a : int; mutable b : int }
^^^^^^^^^^^^^^^
Warning 69 [unused-field]: mutable record field b is never mutated.
module Unused_mutable_field_exported_private :
sig type t = private { a : int; mutable b : int; } end
|}]
module Unused_field_disable_warning : sig
end = struct
type t = { a: int; b:int } [@@warning "-unused-field"]
end;;
[%%expect {|
Line 3, characters 2-56:
3 | type t = { a: int; b:int } [@@warning "-unused-field"]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Warning 34 [unused-type-declaration]: unused type t.
module Unused_field_disable_warning : sig end
|}]
module Unused_field_disable_one_warning : sig
end = struct
type t = { a: int [@warning "-unused-field"]; b:int }
end;;
[%%expect {|
Line 3, characters 2-55:
3 | type t = { a: int [@warning "-unused-field"]; b:int }
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Warning 34 [unused-type-declaration]: unused type t.
Line 3, characters 48-53:
3 | type t = { a: int [@warning "-unused-field"]; b:int }
^^^^^
Warning 69 [unused-field]: unused record field b.
module Unused_field_disable_one_warning : sig end
|}]
|
