1Warnings(3)                      OCaml library                     Warnings(3)
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NAME

6       Warnings - Warning definitions
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Module

9       Module   Warnings
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Documentation

12       Module Warnings
13        : sig end
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16       Warning definitions
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18       Warning: this module is unstable and part of Compiler_libs .
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24       type loc = {
25        loc_start : Lexing.position ;
26        loc_end : Lexing.position ;
27        loc_ghost : bool ;
28        }
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33       type field_usage_warning =
34        | Unused
35        | Not_read
36        | Not_mutated
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41       type constructor_usage_warning =
42        | Unused
43        | Not_constructed
44        | Only_exported_private
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48
49       type t =
50        | Comment_start
51        | Comment_not_end
52        | Fragile_match of string
53        | Ignored_partial_application
54        | Labels_omitted of string list
55        | Method_override of string list
56        | Partial_match of string
57        | Missing_record_field_pattern of string
58        | Non_unit_statement
59        | Redundant_case
60        | Redundant_subpat
61        | Instance_variable_override of string list
62        | Illegal_backslash
63        | Implicit_public_methods of string list
64        | Unerasable_optional_argument
65        | Undeclared_virtual_method of string
66        | Not_principal of string
67        | Non_principal_labels of string
68        | Ignored_extra_argument
69        | Nonreturning_statement
70        | Preprocessor of string
71        | Useless_record_with
72        | Bad_module_name of string
73        | All_clauses_guarded
74        | Unused_var of string
75        | Unused_var_strict of string
76        | Wildcard_arg_to_constant_constr
77        | Eol_in_string
78        | Duplicate_definitions of string * string * string * string
79        | Module_linked_twice of string * string * string
80        | Unused_value_declaration of string
81        | Unused_open of string
82        | Unused_type_declaration of string
83        | Unused_for_index of string
84        | Unused_ancestor of string
85        | Unused_constructor of string * constructor_usage_warning
86        | Unused_extension of string * bool * constructor_usage_warning
87        | Unused_rec_flag
88        | Name_out_of_scope of string * string list * bool
89        | Ambiguous_name of string list * string list * bool * string
90        | Disambiguated_name of string
91        | Nonoptional_label of string
92        | Open_shadow_identifier of string * string
93        | Open_shadow_label_constructor of string * string
94        | Bad_env_variable of string * string
95        | Attribute_payload of string * string
96        | Eliminated_optional_arguments of string list
97        | No_cmi_file of string * string option
98        | Unexpected_docstring of bool
99        | Wrong_tailcall_expectation of bool
100        | Fragile_literal_pattern
101        | Misplaced_attribute of string
102        | Duplicated_attribute of string
103        | Inlining_impossible of string
104        | Unreachable_case
105        | Ambiguous_var_in_pattern_guard of string list
106        | No_cmx_file of string
107        | Flambda_assignment_to_non_mutable_value
108        | Unused_module of string
109        | Unboxable_type_in_prim_decl of string
110        | Constraint_on_gadt
111        | Erroneous_printed_signature of string
112        | Unsafe_array_syntax_without_parsing
113        | Redefining_unit of string
114        | Unused_open_bang of string
115        | Unused_functor_parameter of string
116        | Match_on_mutable_state_prevent_uncurry
117        | Unused_field of string * field_usage_warning
118        | Missing_mli
119        | Unused_tmc_attribute
120        | Tmc_breaks_tailcall
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125       type alert = {
126        kind : string ;
127        message : string ;
128        def : loc ;
129        use : loc ;
130        }
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136       val parse_options : bool -> string -> alert option
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141       val parse_alert_option : string -> unit
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143       Disable/enable alerts based on the parameter to the -alert command-line
144       option.  Raises Arg.Bad if the string is not a valid specification.
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148       val without_warnings : (unit -> 'a) -> 'a
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150       Run the thunk with all warnings and alerts disabled.
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154       val is_active : t -> bool
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159       val is_error : t -> bool
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164       val defaults_w : string
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169       val defaults_warn_error : string
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173       type reporting_information = {
174        id : string ;
175        message : string ;
176        is_error : bool ;
177        sub_locs : (loc * string) list ;
178        }
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184       val report : t -> [ `Active of reporting_information | `Inactive ]
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189       val report_alert : alert -> [ `Active of reporting_information | `Inac‐
190       tive ]
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195       exception Errors
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201       val check_fatal : unit -> unit
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206       val reset_fatal : unit -> unit
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211       val help_warnings : unit -> unit
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215       type state
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221       val backup : unit -> state
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226       val restore : state -> unit
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231       val with_state : state -> (unit -> 'a) -> 'a
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236       val mk_lazy : (unit -> 'a) -> 'a Lazy.t
237
238       Like  Lazy.of_fun  , but the function is applied with the warning/alert
239       settings at the time mk_lazy is called.
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242       type description = {
243        number : int ;
244        names : string list ;
245        description : string ;
246        }
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252       val descriptions : description list
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259OCamldoc                          2022-07-22                       Warnings(3)