NAME

       Warnings - Warning definitions

Module

       Module   Warnings

Documentation

       Module Warnings
        : sig end

       Warning definitions

       Warning: this module is unstable and part of Compiler_libs .

       type loc = {
        loc_start : Lexing.position ;
        loc_end : Lexing.position ;
        loc_ghost : bool ;
        }

       type field_usage_warning =
        | Unused
        | Not_read
        | Not_mutated

       type constructor_usage_warning =
        | Unused
        | Not_constructed
        | Only_exported_private

       type t =
        | Comment_start
        | Comment_not_end
        | Fragile_match of string
        | Ignored_partial_application
        | Labels_omitted of string list
        | Method_override of string list
        | Partial_match of string
        | Missing_record_field_pattern of string
        | Non_unit_statement
        | Redundant_case
        | Redundant_subpat
        | Instance_variable_override of string list
        | Illegal_backslash
        | Implicit_public_methods of string list
        | Unerasable_optional_argument
        | Undeclared_virtual_method of string
        | Not_principal of string
        | Non_principal_labels of string
        | Ignored_extra_argument
        | Nonreturning_statement
        | Preprocessor of string
        | Useless_record_with
        | Bad_module_name of string
        | All_clauses_guarded
        | Unused_var of string
        | Unused_var_strict of string
        | Wildcard_arg_to_constant_constr
        | Eol_in_string
        | Duplicate_definitions of string * string * string * string
        | Module_linked_twice of string * string * string
        | Unused_value_declaration of string
        | Unused_open of string
        | Unused_type_declaration of string
        | Unused_for_index of string
        | Unused_ancestor of string
        | Unused_constructor of string * constructor_usage_warning
        | Unused_extension of string * bool * constructor_usage_warning
        | Unused_rec_flag
        | Name_out_of_scope of string * string list * bool
        | Ambiguous_name of string list * string list * bool * string
        | Disambiguated_name of string
        | Nonoptional_label of string
        | Open_shadow_identifier of string * string
        | Open_shadow_label_constructor of string * string
        | Bad_env_variable of string * string
        | Attribute_payload of string * string
        | Eliminated_optional_arguments of string list
        | No_cmi_file of string * string option
        | Unexpected_docstring of bool
        | Wrong_tailcall_expectation of bool
        | Fragile_literal_pattern
        | Misplaced_attribute of string
        | Duplicated_attribute of string
        | Inlining_impossible of string
        | Unreachable_case
        | Ambiguous_var_in_pattern_guard of string list
        | No_cmx_file of string
        | Flambda_assignment_to_non_mutable_value
        | Unused_module of string
        | Unboxable_type_in_prim_decl of string
        | Constraint_on_gadt
        | Erroneous_printed_signature of string
        | Unsafe_array_syntax_without_parsing
        | Redefining_unit of string
        | Unused_open_bang of string
        | Unused_functor_parameter of string
        | Match_on_mutable_state_prevent_uncurry
        | Unused_field of string * field_usage_warning
        | Missing_mli

       type alert = {
        kind : string ;
        message : string ;
        def : loc ;
        use : loc ;
        }

       val parse_options : bool -> string -> alert option

       val parse_alert_option : string -> unit

       Disable/enable  alerts  based  on the parameter to the -alert command-line option.  Raises
       Arg.Bad if the string is not a valid specification.

       val without_warnings : (unit -> 'a) -> 'a

       Run the thunk with all warnings and alerts disabled.

       val is_active : t -> bool

       val is_error : t -> bool

       val defaults_w : string

       val defaults_warn_error : string

       type reporting_information = {
        id : string ;
        message : string ;
        is_error : bool ;
        sub_locs : (loc * string) list ;
        }

       val report : t -> [ `Active of reporting_information | `Inactive ]

       val report_alert : alert -> [ `Active of reporting_information | `Inactive ]

       exception Errors

       val check_fatal : unit -> unit

       val reset_fatal : unit -> unit

       val help_warnings : unit -> unit

       type state

       val backup : unit -> state

       val restore : state -> unit

       val mk_lazy : (unit -> 'a) -> 'a Lazy.t

       Like Lazy.of_fun , but the function is applied with the warning/alert settings at the time
       mk_lazy is called.