1------------------------------------------------------------------------------ 2-- -- 3-- GNAT COMPILER COMPONENTS -- 4-- -- 5-- E R R O U T C -- 6-- -- 7-- S p e c -- 8-- -- 9-- Copyright (C) 1992-2015, Free Software Foundation, Inc. -- 10-- -- 11-- GNAT is free software; you can redistribute it and/or modify it under -- 12-- terms of the GNU General Public License as published by the Free Soft- -- 13-- ware Foundation; either version 3, or (at your option) any later ver- -- 14-- sion. GNAT is distributed in the hope that it will be useful, but WITH- -- 15-- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY -- 16-- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License -- 17-- for more details. You should have received a copy of the GNU General -- 18-- Public License distributed with GNAT; see file COPYING3. If not, go to -- 19-- http://www.gnu.org/licenses for a complete copy of the license. -- 20-- -- 21-- GNAT was originally developed by the GNAT team at New York University. -- 22-- Extensive contributions were provided by Ada Core Technologies Inc. -- 23-- -- 24------------------------------------------------------------------------------ 25 26-- This packages contains global variables and routines common to error 27-- reporting packages, including Errout and Prj.Err. 28 29with Table; 30with Types; use Types; 31 32package Erroutc is 33 34 Class_Flag : Boolean := False; 35 -- This flag is set True when outputting a reference to a class-wide 36 -- type, and is used by Add_Class to insert 'Class at the proper point 37 38 Continuation : Boolean := False; 39 -- Indicates if current message is a continuation. Initialized from the 40 -- Msg_Cont parameter in Error_Msg_Internal and then set True if a \ 41 -- insertion character is encountered. 42 43 Continuation_New_Line : Boolean := False; 44 -- Indicates if current message was a continuation line marked with \\ to 45 -- force a new line. Set True if \\ encountered. 46 47 Flag_Source : Source_File_Index; 48 -- Source file index for source file where error is being posted 49 50 Has_Double_Exclam : Boolean := False; 51 -- Set true to indicate that the current message contains the insertion 52 -- sequence !! (force warnings even in non-main unit source files). 53 54 Is_Serious_Error : Boolean := False; 55 -- Set True for a serious error (i.e. any message that is not a warning 56 -- or style message, and that does not contain a | insertion character). 57 58 Is_Unconditional_Msg : Boolean := False; 59 -- Set True to indicate that the current message contains the insertion 60 -- character ! and is thus to be treated as an unconditional message. 61 62 Is_Warning_Msg : Boolean := False; 63 -- Set True to indicate if current message is warning message (contains ? 64 -- or contains < and Error_Msg_Warn is True. 65 66 Is_Info_Msg : Boolean := False; 67 -- Set True to indicate that the current message starts with the characters 68 -- "info: " and is to be treated as an information message. This string 69 -- will be prepended to the message and all its continuations. 70 71 Is_Check_Msg : Boolean := False; 72 -- Set True to indicate that the current message starts with one of 73 -- "high: ", "medium: ", "low: " and is to be treated as a check message. 74 75 Warning_Msg_Char : Character; 76 -- Warning character, valid only if Is_Warning_Msg is True 77 -- ' ' -- ? or < appeared on its own in message 78 -- '?' -- ?? or << appeared in message 79 -- 'x' -- ?x? or <x< appeared in message (x = a .. z) 80 -- 'X' -- ?X? or <X< appeared in message (X = A .. Z) 81 -- '*' -- ?*? or <*< appeared in message 82 -- '$' -- ?$? or <$< appeared in message 83 -- In the case of the < sequences, this is set only if the message is 84 -- actually a warning, i.e. if Error_Msg_Warn is True 85 86 Is_Style_Msg : Boolean := False; 87 -- Set True to indicate if the current message is a style message 88 -- (i.e. a message whose text starts with the characters "(style)"). 89 90 Kill_Message : Boolean := False; 91 -- A flag used to kill weird messages (e.g. those containing uninterpreted 92 -- implicit type references) if we have already seen at least one message 93 -- already. The idea is that we hope the weird message is a junk cascaded 94 -- message that should be suppressed. 95 96 Last_Killed : Boolean := False; 97 -- Set True if the most recently posted non-continuation message was 98 -- killed. This is used to determine the processing of any continuation 99 -- messages that follow. 100 101 List_Pragmas_Index : Int := 0; 102 -- Index into List_Pragmas table 103 104 List_Pragmas_Mode : Boolean := False; 105 -- Starts True, gets set False by pragma List (Off), True by List (On) 106 107 Manual_Quote_Mode : Boolean := False; 108 -- Set True in manual quotation mode 109 110 Max_Msg_Length : constant := 1024 + 2 * Int (Column_Number'Last); 111 -- Maximum length of error message. The addition of 2 * Column_Number'Last 112 -- ensures that two insertion tokens of maximum length can be accommodated. 113 -- The value of 1024 is an arbitrary value that should be more than long 114 -- enough to accommodate any reasonable message (and for that matter, some 115 -- pretty unreasonable messages). 116 117 Msg_Buffer : String (1 .. Max_Msg_Length); 118 -- Buffer used to prepare error messages 119 120 Msglen : Integer := 0; 121 -- Number of characters currently stored in the message buffer 122 123 Suppress_Message : Boolean; 124 -- A flag used to suppress certain obviously redundant messages (i.e. 125 -- those referring to a node whose type is Any_Type). This suppression 126 -- is effective only if All_Errors_Mode is off. 127 128 Suppress_Instance_Location : Boolean := False; 129 -- Normally, if a # location in a message references a location within 130 -- a generic template, then a note is added giving the location of the 131 -- instantiation. If this variable is set True, then this note is not 132 -- output. This is used for internal processing for the case of an 133 -- illegal instantiation. See Error_Msg routine for further details. 134 135 ---------------------------- 136 -- Message ID Definitions -- 137 ---------------------------- 138 139 type Error_Msg_Id is new Int; 140 -- A type used to represent specific error messages. Used by the clients 141 -- of this package only in the context of the Get_Error_Id and 142 -- Change_Error_Text subprograms. 143 144 No_Error_Msg : constant Error_Msg_Id := 0; 145 -- A constant which is different from any value returned by Get_Error_Id. 146 -- Typically used by a client to indicate absence of a saved Id value. 147 148 Cur_Msg : Error_Msg_Id := No_Error_Msg; 149 -- Id of most recently posted error message 150 151 function Get_Msg_Id return Error_Msg_Id; 152 -- Returns the Id of the message most recently posted using one of the 153 -- Error_Msg routines. 154 155 function Get_Location (E : Error_Msg_Id) return Source_Ptr; 156 -- Returns the flag location of the error message with the given id E 157 158 ----------------------------------- 159 -- Error Message Data Structures -- 160 ----------------------------------- 161 162 -- The error messages are stored as a linked list of error message objects 163 -- sorted into ascending order by the source location (Sloc). Each object 164 -- records the text of the message and its source location. 165 166 -- The following record type and table are used to represent error 167 -- messages, with one entry in the table being allocated for each message. 168 169 type Error_Msg_Object is record 170 Text : String_Ptr; 171 -- Text of error message, fully expanded with all insertions 172 173 Next : Error_Msg_Id; 174 -- Pointer to next message in error chain. A value of No_Error_Msg 175 -- indicates the end of the chain. 176 177 Prev : Error_Msg_Id; 178 -- Pointer to previous message in error chain. Only set during the 179 -- Finalize procedure. A value of No_Error_Msg indicates the first 180 -- message in the chain. 181 182 Sfile : Source_File_Index; 183 -- Source table index of source file. In the case of an error that 184 -- refers to a template, always references the original template 185 -- not an instantiation copy. 186 187 Sptr : Source_Ptr; 188 -- Flag pointer. In the case of an error that refers to a template, 189 -- always references the original template, not an instantiation copy. 190 -- This value is the actual place in the source that the error message 191 -- will be posted. Note that an error placed on an instantiation will 192 -- have Sptr pointing to the instantiation point. 193 194 Optr : Source_Ptr; 195 -- Flag location used in the call to post the error. This is normally 196 -- the same as Sptr, except when an error is posted on a particular 197 -- instantiation of a generic. In such a case, Sptr will point to 198 -- the original source location of the instantiation itself, but 199 -- Optr will point to the template location (more accurately to the 200 -- template copy in the instantiation copy corresponding to the 201 -- instantiation referenced by Sptr). 202 203 Line : Physical_Line_Number; 204 -- Line number for error message 205 206 Col : Column_Number; 207 -- Column number for error message 208 209 Warn : Boolean; 210 -- True if warning message 211 212 Info : Boolean; 213 -- True if info message 214 215 Check : Boolean; 216 -- True if check message 217 218 Warn_Err : Boolean; 219 -- True if this is a warning message which is to be treated as an error 220 -- as a result of a match with a Warning_As_Error pragma. 221 222 Warn_Chr : Character; 223 -- Warning character (note: set even if Warning_Doc_Switch is False) 224 -- ' ' -- ? or < appeared on its own in message 225 -- '?' -- ?? or << appeared in message 226 -- 'x' -- ?x? or <x< appeared in message (x = a .. z) 227 -- 'X' -- ?X? or <X< appeared in message (X = A .. Z) 228 -- '*' -- ?*? or <*< appeared in message 229 -- '$' -- ?$? or <$< appeared in message 230 -- In the case of the < sequences, this is set only if the message is 231 -- actually a warning, i.e. if Error_Msg_Warn is True 232 233 Style : Boolean; 234 -- True if style message (starts with "(style)") 235 236 Serious : Boolean; 237 -- True if serious error message (not a warning and no | character) 238 239 Uncond : Boolean; 240 -- True if unconditional message (i.e. insertion character ! appeared) 241 242 Msg_Cont : Boolean; 243 -- This is used for logical messages that are composed of multiple 244 -- individual messages. For messages that are not part of such a 245 -- group, or that are the first message in such a group. Msg_Cont 246 -- is set to False. For subsequent messages in a group, Msg_Cont 247 -- is set to True. This is used to make sure that such a group of 248 -- messages is either suppressed or retained as a group (e.g. in 249 -- the circuit that deletes identical messages). 250 251 Deleted : Boolean; 252 -- If this flag is set, the message is not printed. This is used 253 -- in the circuit for deleting duplicate/redundant error messages. 254 end record; 255 256 package Errors is new Table.Table ( 257 Table_Component_Type => Error_Msg_Object, 258 Table_Index_Type => Error_Msg_Id, 259 Table_Low_Bound => 1, 260 Table_Initial => 200, 261 Table_Increment => 200, 262 Table_Name => "Error"); 263 264 First_Error_Msg : Error_Msg_Id; 265 -- The list of error messages, i.e. the first entry on the list of error 266 -- messages. This is not the same as the physically first entry in the 267 -- error message table, since messages are not always inserted in sequence. 268 269 Last_Error_Msg : Error_Msg_Id; 270 -- The last entry on the list of error messages. Note: this is not the same 271 -- as the physically last entry in the error message table, since messages 272 -- are not always inserted in sequence. 273 274 -------------------------- 275 -- Warning Mode Control -- 276 -------------------------- 277 278 -- Pragma Warnings allows warnings to be turned off for a specified region 279 -- of code, and the following tables are the data structures used to keep 280 -- track of these regions. 281 282 -- The first table is used for the basic command line control, and for the 283 -- forms of Warning with a single ON or OFF parameter. 284 285 -- It contains pairs of source locations, the first being the start 286 -- location for a warnings off region, and the second being the end 287 -- location. When a pragma Warnings (Off) is encountered, a new entry is 288 -- established extending from the location of the pragma to the end of the 289 -- current source file. A subsequent pragma Warnings (On) adjusts the end 290 -- point of this entry appropriately. 291 292 -- If all warnings are suppressed by command switch, then there is a dummy 293 -- entry (put there by Errout.Initialize) at the start of the table which 294 -- covers all possible Source_Ptr values. Note that the source pointer 295 -- values in this table always reference the original template, not an 296 -- instantiation copy, in the generic case. 297 298 -- Reason is the reason from the pragma Warnings (Off,..) or the null 299 -- string if no reason parameter is given. 300 301 type Warnings_Entry is record 302 Start : Source_Ptr; 303 Stop : Source_Ptr; 304 Reason : String_Id; 305 end record; 306 307 package Warnings is new Table.Table ( 308 Table_Component_Type => Warnings_Entry, 309 Table_Index_Type => Natural, 310 Table_Low_Bound => 1, 311 Table_Initial => 100, 312 Table_Increment => 200, 313 Table_Name => "Warnings"); 314 315 -- The second table is used for the specific forms of the pragma, where 316 -- the first argument is ON or OFF, and the second parameter is a string 317 -- which is the pattern to match for suppressing a warning. 318 319 type Specific_Warning_Entry is record 320 Start : Source_Ptr; 321 Stop : Source_Ptr; 322 -- Starting and ending source pointers for the range. These are always 323 -- from the same source file. 324 325 Reason : String_Id; 326 -- Reason string from pragma Warnings, or null string if none 327 328 Msg : String_Ptr; 329 -- Message from pragma Warnings (Off, string) 330 331 Open : Boolean; 332 -- Set to True if OFF has been encountered with no matching ON 333 334 Used : Boolean; 335 -- Set to True if entry has been used to suppress a warning 336 337 Config : Boolean; 338 -- True if pragma is configuration pragma (in which case no matching Off 339 -- pragma is required, and it is not required that a specific warning be 340 -- suppressed). 341 end record; 342 343 package Specific_Warnings is new Table.Table ( 344 Table_Component_Type => Specific_Warning_Entry, 345 Table_Index_Type => Natural, 346 Table_Low_Bound => 1, 347 Table_Initial => 100, 348 Table_Increment => 200, 349 Table_Name => "Specific_Warnings"); 350 351 -- Note on handling configuration case versus specific case. A complication 352 -- arises from this example: 353 354 -- pragma Warnings (Off, "not referenced*"); 355 -- procedure Mumble (X : Integer) is 356 -- pragma Warnings (On, "not referenced*"); 357 -- begin 358 -- null; 359 -- end Mumble; 360 361 -- The trouble is that the first pragma is technically a configuration 362 -- pragma, and yet it is clearly being used in the context of thinking of 363 -- it as a specific case. To deal with this, what we do is that the On 364 -- entry can match a configuration pragma from the same file, and if we 365 -- find such an On entry, we cancel the indication of it being the 366 -- configuration case. This seems to handle all cases we run into ok. 367 368 ----------------- 369 -- Subprograms -- 370 ----------------- 371 372 procedure Add_Class; 373 -- Add 'Class to buffer for class wide type case (Class_Flag set) 374 375 function Buffer_Ends_With (C : Character) return Boolean; 376 -- Tests if message buffer ends with given character 377 378 function Buffer_Ends_With (S : String) return Boolean; 379 -- Tests if message buffer ends with given string preceded by a space 380 381 procedure Buffer_Remove (C : Character); 382 -- Remove given character fron end of buffer if it is present 383 384 procedure Buffer_Remove (S : String); 385 -- Removes given string from end of buffer if it is present at end of 386 -- buffer, and preceded by a space. 387 388 function Compilation_Errors return Boolean; 389 -- Returns true if errors have been detected, or warnings in -gnatwe 390 -- (treat warnings as errors) mode. 391 392 procedure dmsg (Id : Error_Msg_Id); 393 -- Debugging routine to dump an error message 394 395 procedure Debug_Output (N : Node_Id); 396 -- Called from Error_Msg_N and Error_Msg_NE to generate line of debug 397 -- output giving node number (of node N) if the debug X switch is set. 398 399 procedure Check_Duplicate_Message (M1, M2 : Error_Msg_Id); 400 -- This function is passed the Id values of two error messages. If either 401 -- M1 or M2 is a continuation message, or is already deleted, the call is 402 -- ignored. Otherwise a check is made to see if M1 and M2 are duplicated or 403 -- redundant. If so, the message to be deleted and all its continuations 404 -- are marked with the Deleted flag set to True. 405 406 function Get_Warning_Tag (Id : Error_Msg_Id) return String; 407 -- Given an error message ID, return tag showing warning message class, or 408 -- the null string if this option is not enabled or this is not a warning. 409 410 procedure Output_Error_Msgs (E : in out Error_Msg_Id); 411 -- Output source line, error flag, and text of stored error message and all 412 -- subsequent messages for the same line and unit. On return E is set to be 413 -- one higher than the last message output. 414 415 procedure Output_Line_Number (L : Logical_Line_Number); 416 -- Output a line number as six digits (with leading zeroes suppressed), 417 -- followed by a period and a blank (note that this is 8 characters which 418 -- means that tabs in the source line will not get messed up). Line numbers 419 -- that match or are less than the last Source_Reference pragma are listed 420 -- as all blanks, avoiding output of junk line numbers. 421 422 procedure Output_Msg_Text (E : Error_Msg_Id); 423 -- Outputs characters of text in the text of the error message E. Note that 424 -- no end of line is output, the caller is responsible for adding the end 425 -- of line. If Error_Msg_Line_Length is non-zero, this is the routine that 426 -- splits the line generating multiple lines of output, and in this case 427 -- the last line has no terminating end of line character. 428 429 procedure Prescan_Message (Msg : String); 430 -- Scans message text and sets the following variables: 431 -- 432 -- Is_Warning_Msg is set True if Msg is a warning message (contains a 433 -- question mark character), and False otherwise. 434 -- 435 -- Is_Style_Msg is set True if Msg is a style message (starts with 436 -- "(style)") and False otherwise. 437 -- 438 -- Is_Info_Msg is set True if Msg is an information message (starts 439 -- with "info: ". Such messages must contain a ? sequence since they 440 -- are also considered to be warning messages, and get a tag. 441 -- 442 -- Is_Serious_Error is set to True unless the message is a warning or 443 -- style message or contains the character | (non-serious error). 444 -- 445 -- Is_Unconditional_Msg is set True if the message contains the character 446 -- ! and is otherwise set False. 447 -- 448 -- Has_Double_Exclam is set True if the message contains the sequence !! 449 -- and is otherwise set False. 450 -- 451 -- We need to know right away these aspects of a message, since we will 452 -- test these values before doing the full error scan. 453 -- 454 -- Note that the call has no effect for continuation messages (those whose 455 -- first character is '\'), and all variables are left unchanged. 456 457 procedure Purge_Messages (From : Source_Ptr; To : Source_Ptr); 458 -- All error messages whose location is in the range From .. To (not 459 -- including the end points) will be deleted from the error listing. 460 461 function Same_Error (M1, M2 : Error_Msg_Id) return Boolean; 462 -- See if two messages have the same text. Returns true if the text of the 463 -- two messages is identical, or if one of them is the same as the other 464 -- with an appended "instance at xxx" tag. 465 466 procedure Set_Msg_Blank; 467 -- Sets a single blank in the message if the preceding character is a 468 -- non-blank character other than a left parenthesis or minus. Has no 469 -- effect if manual quote mode is turned on. 470 471 procedure Set_Msg_Blank_Conditional; 472 -- Sets a single blank in the message if the preceding character is a 473 -- non-blank character other than a left parenthesis or quote. Has no 474 -- effect if manual quote mode is turned on. 475 476 procedure Set_Msg_Char (C : Character); 477 -- Add a single character to the current message. This routine does not 478 -- check for special insertion characters (they are just treated as text 479 -- characters if they occur). 480 481 procedure Set_Msg_Insertion_File_Name; 482 -- Handle file name insertion (left brace insertion character) 483 484 procedure Set_Msg_Insertion_Line_Number (Loc, Flag : Source_Ptr); 485 -- Handle line number insertion (# insertion character). Loc is the 486 -- location to be referenced, and Flag is the location at which the 487 -- flag is posted (used to determine whether to add "in file xxx") 488 489 procedure Set_Msg_Insertion_Name_Literal; 490 491 procedure Set_Msg_Insertion_Name; 492 -- Handle name insertion (% insertion character) 493 494 procedure Set_Msg_Insertion_Reserved_Name; 495 -- Handle insertion of reserved word name (* insertion character) 496 497 procedure Set_Msg_Insertion_Reserved_Word 498 (Text : String; 499 J : in out Integer); 500 -- Handle reserved word insertion (upper case letters). The Text argument 501 -- is the current error message input text, and J is an index which on 502 -- entry points to the first character of the reserved word, and on exit 503 -- points past the last character of the reserved word. Note that RM and 504 -- SPARK are treated specially and not considered to be keywords. 505 506 procedure Set_Msg_Insertion_Run_Time_Name; 507 -- If package System contains a definition for Run_Time_Name (see package 508 -- Targparm for details), then this procedure will insert a message of 509 -- the form (name) into the current error message, with name set in mixed 510 -- case (upper case after any spaces). If no run time name is defined, 511 -- then this routine has no effect). 512 513 procedure Set_Msg_Insertion_Uint; 514 -- Handle Uint insertion (^ insertion character) 515 516 procedure Set_Msg_Int (Line : Int); 517 -- Set the decimal representation of the argument in the error message 518 -- buffer with no leading zeroes output. 519 520 procedure Set_Msg_Name_Buffer; 521 -- Output name from Name_Buffer, with surrounding quotes unless manual 522 -- quotation mode is in effect. 523 524 procedure Set_Msg_Quote; 525 -- Set quote if in normal quote mode, nothing if in manual quote mode 526 527 procedure Set_Msg_Str (Text : String); 528 -- Add a sequence of characters to the current message. This routine does 529 -- not check for special insertion characters (they are just treated as 530 -- text characters if they occur). It does perform the transformation of 531 -- the special strings _xxx (xxx = Pre/Post/Type_Invariant) to xxx'Class. 532 533 procedure Set_Next_Non_Deleted_Msg (E : in out Error_Msg_Id); 534 -- Given a message id, move to next message id, but skip any deleted 535 -- messages, so that this results in E on output being the first non- 536 -- deleted message following the input value of E, or No_Error_Msg if 537 -- the input value of E was either already No_Error_Msg, or was the 538 -- last non-deleted message. 539 540 procedure Set_Specific_Warning_Off 541 (Loc : Source_Ptr; 542 Msg : String; 543 Reason : String_Id; 544 Config : Boolean; 545 Used : Boolean := False); 546 -- This is called in response to the two argument form of pragma Warnings 547 -- where the first argument is OFF, and the second argument is a string 548 -- which identifies a specific warning to be suppressed. The first argument 549 -- is the start of the suppression range, and the second argument is the 550 -- string from the pragma. Loc is the location of the pragma (which is the 551 -- start of the range to suppress). Reason is the reason string from the 552 -- pragma, or the null string if no reason is given. Config is True for the 553 -- configuration pragma case (where there is no requirement for a matching 554 -- OFF pragma). Used is set True to disable the check that the warning 555 -- actually has the effect of suppressing a warning. 556 557 procedure Set_Specific_Warning_On 558 (Loc : Source_Ptr; 559 Msg : String; 560 Err : out Boolean); 561 -- This is called in response to the two argument form of pragma Warnings 562 -- where the first argument is ON, and the second argument is a string 563 -- which identifies a specific warning to be suppressed. The first argument 564 -- is the end of the suppression range, and the second argument is the 565 -- string from the pragma. Err is set to True on return to report the error 566 -- of no matching Warnings Off pragma preceding this one. 567 568 procedure Set_Warnings_Mode_Off (Loc : Source_Ptr; Reason : String_Id); 569 -- Called in response to a pragma Warnings (Off) to record the source 570 -- location from which warnings are to be turned off. Reason is the 571 -- Reason from the pragma, or the null string if none is given. 572 573 procedure Set_Warnings_Mode_On (Loc : Source_Ptr); 574 -- Called in response to a pragma Warnings (On) to record the source 575 -- location from which warnings are to be turned back on. 576 577 function Warnings_Suppressed (Loc : Source_Ptr) return String_Id; 578 -- Determines if given location is covered by a warnings off suppression 579 -- range in the warnings table (or is suppressed by compilation option, 580 -- which generates a warning range for the whole source file). This routine 581 -- only deals with the general ON/OFF case, not specific warnings. The 582 -- returned result is No_String if warnings are not suppressed. If warnings 583 -- are suppressed for the given location, then corresponding Reason 584 -- parameter from the pragma is returned (or the null string if no Reason 585 -- parameter was present). 586 587 function Warning_Specifically_Suppressed 588 (Loc : Source_Ptr; 589 Msg : String_Ptr; 590 Tag : String := "") return String_Id; 591 -- Determines if given message to be posted at given location is suppressed 592 -- by specific ON/OFF Warnings pragmas specifying this particular message. 593 -- If the warning is not suppressed then No_String is returned, otherwise 594 -- the corresponding warning string is returned (or the null string if no 595 -- Warning argument was present in the pragma). Tag is the error message 596 -- tag for the message in question or the null string if there is no tag. 597 -- 598 -- Note: we have a null default for Tag to deal with calls from an old 599 -- branch of gnat2why, which does not know about tags in the calls but 600 -- which uses the latest version of erroutc. 601 602 function Warning_Treated_As_Error (Msg : String) return Boolean; 603 -- Returns True if the warning message Msg matches any of the strings 604 -- given by Warning_As_Error pragmas, as stored in the Warnings_As_Errors 605 -- table by Set_Warning_As_Error. 606 607 type Error_Msg_Proc is 608 access procedure (Msg : String; Flag_Location : Source_Ptr); 609 procedure Validate_Specific_Warnings (Eproc : Error_Msg_Proc); 610 -- Checks that specific warnings are consistent (for non-configuration 611 -- case, properly closed, and used). The argument is a pointer to the 612 -- Error_Msg procedure to be called if any inconsistencies are detected. 613 614end Erroutc; 615