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|
(* TEST
flags = "-strict-sequence"
* expect
*)
let g f = f ()
let _ = g 3;; (* missing `fun () ->' *)
[%%expect{|
val g : (unit -> 'a) -> 'a = <fun>
Line 2, characters 10-11:
2 | let _ = g 3;; (* missing `fun () ->' *)
^
Error: This expression has type int but an expression was expected of type
unit -> 'a
Hint: Did you forget to wrap the expression using `fun () ->'?
|}];;
let _ =
print_int 3;
print_newline; (* missing unit argument *)
print_int 5;;
(* We use -strict-sequence for this test: otherwise only a warning is produced
about print_newline not being of type unit *)
[%%expect{|
Line 3, characters 3-16:
3 | print_newline; (* missing unit argument *)
^^^^^^^^^^^^^
Error: This expression has type unit -> unit
but an expression was expected of type unit
because it is in the left-hand side of a sequence
Hint: Did you forget to provide `()' as argument?
|}];;
let x = read_int in (* missing unit argument *)
print_int x;;
[%%expect{|
Line 2, characters 10-11:
2 | print_int x;;
^
Error: This expression has type unit -> int
but an expression was expected of type int
Hint: Did you forget to provide `()' as argument?
|}];;
let g f =
let _ = f () in
f = 3;;
[%%expect{|
Line 3, characters 6-7:
3 | f = 3;;
^
Error: This expression has type int but an expression was expected of type
unit -> 'a
Hint: Did you forget to wrap the expression using `fun () ->'?
|}];;
let g f =
let _ = f () in
3 = f;;
[%%expect{|
Line 3, characters 6-7:
3 | 3 = f;;
^
Error: This expression has type unit -> 'a
but an expression was expected of type int
Hint: Did you forget to provide `()' as argument?
|}]
|
