1 ------------------------------------------------------------------------------
3 -- GNAT COMPILER COMPONENTS --
9 -- Copyright (C) 1992-2014, Free Software Foundation, Inc. --
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. --
21 -- GNAT was originally developed by the GNAT team at New York University. --
22 -- Extensive contributions were provided by Ada Core Technologies Inc. --
24 ------------------------------------------------------------------------------
26 -- Warning: Error messages can be generated during Gigi processing by direct
27 -- calls to error message routines, so it is essential that the processing
28 -- in this body be consistent with the requirements for the Gigi processing
29 -- environment, and that in particular, no disallowed table expansion is
32 with Atree
; use Atree
;
33 with Casing
; use Casing
;
34 with Csets
; use Csets
;
35 with Debug
; use Debug
;
36 with Einfo
; use Einfo
;
37 with Erroutc
; use Erroutc
;
38 with Fname
; use Fname
;
39 with Gnatvsn
; use Gnatvsn
;
42 with Nlists
; use Nlists
;
43 with Output
; use Output
;
44 with Scans
; use Scans
;
45 with Sem_Aux
; use Sem_Aux
;
46 with Sinput
; use Sinput
;
47 with Sinfo
; use Sinfo
;
48 with Snames
; use Snames
;
49 with Stand
; use Stand
;
50 with Stylesw
; use Stylesw
;
51 with Uname
; use Uname
;
53 package body Errout
is
55 Errors_Must_Be_Ignored
: Boolean := False;
56 -- Set to True by procedure Set_Ignore_Errors (True), when calls to error
57 -- message procedures should be ignored (when parsing irrelevant text in
58 -- sources being preprocessed).
60 Finalize_Called
: Boolean := False;
61 -- Set True if the Finalize routine has been called
63 Warn_On_Instance
: Boolean;
64 -- Flag set true for warning message to be posted on instance
66 ------------------------------------
67 -- Table of Non-Instance Messages --
68 ------------------------------------
70 -- This table contains an entry for every error message processed by the
71 -- Error_Msg routine that is not posted on generic (or inlined) instance.
72 -- As explained in further detail in the Error_Msg procedure body, this
73 -- table is used to avoid posting redundant messages on instances.
75 type NIM_Record
is record
79 -- Type used to store text and location of one message
81 package Non_Instance_Msgs
is new Table
.Table
(
82 Table_Component_Type
=> NIM_Record
,
83 Table_Index_Type
=> Int
,
86 Table_Increment
=> 100,
87 Table_Name
=> "Non_Instance_Msgs");
89 -----------------------
90 -- Local Subprograms --
91 -----------------------
93 procedure Error_Msg_Internal
98 -- This is the low level routine used to post messages after dealing with
99 -- the issue of messages placed on instantiations (which get broken up
100 -- into separate calls in Error_Msg). Sptr is the location on which the
101 -- flag will be placed in the output. In the case where the flag is on
102 -- the template, this points directly to the template, not to one of the
103 -- instantiation copies of the template. Optr is the original location
104 -- used to flag the error, and this may indeed point to an instantiation
105 -- copy. So typically we can see Optr pointing to the template location
106 -- in an instantiation copy when Sptr points to the source location of
107 -- the actual instantiation (i.e the line with the new). Msg_Cont is
108 -- set true if this is a continuation message.
110 function No_Warnings
(N
: Node_Or_Entity_Id
) return Boolean;
111 -- Determines if warnings should be suppressed for the given node
113 function OK_Node
(N
: Node_Id
) return Boolean;
114 -- Determines if a node is an OK node to place an error message on (return
115 -- True) or if the error message should be suppressed (return False). A
116 -- message is suppressed if the node already has an error posted on it,
117 -- or if it refers to an Etype that has an error posted on it, or if
118 -- it references an Entity that has an error posted on it.
120 procedure Output_Source_Line
121 (L
: Physical_Line_Number
;
122 Sfile
: Source_File_Index
;
124 -- Outputs text of source line L, in file S, together with preceding line
125 -- number, as described above for Output_Line_Number. The Errs parameter
126 -- indicates if there are errors attached to the line, which forces
127 -- listing on, even in the presence of pragma List (Off).
129 procedure Set_Msg_Insertion_Column
;
130 -- Handle column number insertion (@ insertion character)
132 procedure Set_Msg_Insertion_Node
;
133 -- Handle node (name from node) insertion (& insertion character)
135 procedure Set_Msg_Insertion_Type_Reference
(Flag
: Source_Ptr
);
136 -- Handle type reference (right brace insertion character). Flag is the
137 -- location of the flag, which is provided for the internal call to
138 -- Set_Msg_Insertion_Line_Number,
140 procedure Set_Msg_Insertion_Unit_Name
(Suffix
: Boolean := True);
141 -- Handle unit name insertion ($ insertion character). Depending on Boolean
142 -- parameter Suffix, (spec) or (body) is appended after the unit name.
144 procedure Set_Msg_Node
(Node
: Node_Id
);
145 -- Add the sequence of characters for the name associated with the given
146 -- node to the current message. For N_Designator, N_Selected_Component,
147 -- N_Defining_Program_Unit_Name, and N_Expanded_Name, the Prefix is
150 procedure Set_Msg_Text
(Text
: String; Flag
: Source_Ptr
);
151 -- Add a sequence of characters to the current message. The characters may
152 -- be one of the special insertion characters (see documentation in spec).
153 -- Flag is the location at which the error is to be posted, which is used
154 -- to determine whether or not the # insertion needs a file name. The
155 -- variables Msg_Buffer are set on return Msglen.
157 procedure Set_Posted
(N
: Node_Id
);
158 -- Sets the Error_Posted flag on the given node, and all its parents that
159 -- are subexpressions and then on the parent non-subexpression construct
160 -- that contains the original expression. If that parent is a named
161 -- association, the flag is further propagated to its parent. This is done
162 -- in order to guard against cascaded errors. Note that this call has an
163 -- effect for a serious error only.
165 procedure Set_Qualification
(N
: Nat
; E
: Entity_Id
);
166 -- Outputs up to N levels of qualification for the given entity. For
167 -- example, the entity A.B.C.D will output B.C. if N = 2.
169 function Special_Msg_Delete
171 N
: Node_Or_Entity_Id
;
172 E
: Node_Or_Entity_Id
) return Boolean;
173 -- This function is called from Error_Msg_NEL, passing the message Msg,
174 -- node N on which the error is to be posted, and the entity or node E
175 -- to be used for an & insertion in the message if any. The job of this
176 -- procedure is to test for certain cascaded messages that we would like
177 -- to suppress. If the message is to be suppressed then we return True.
178 -- If the message should be generated (the normal case) False is returned.
180 procedure Unwind_Internal_Type
(Ent
: in out Entity_Id
);
181 -- This procedure is given an entity id for an internal type, i.e. a type
182 -- with an internal name. It unwinds the type to try to get to something
183 -- reasonably printable, generating prefixes like "subtype of", "access
184 -- to", etc along the way in the buffer. The value in Ent on return is the
185 -- final name to be printed. Hopefully this is not an internal name, but in
186 -- some internal name cases, it is an internal name, and has to be printed
187 -- anyway (although in this case the message has been killed if possible).
188 -- The global variable Class_Flag is set to True if the resulting entity
189 -- should have 'Class appended to its name (see Add_Class procedure), and
190 -- is otherwise unchanged.
192 function Warn_Insertion
return String;
193 -- This is called for warning messages only (so Warning_Msg_Char is set)
194 -- and returns a corresponding string to use at the beginning of generated
195 -- auxiliary messages, such as "in instantiation at ...".
196 -- 'a' .. 'z' returns "?x?"
197 -- 'A' .. 'Z' returns "?X?"
199 -- '$' returns "?$?info: "
201 -- No other settings are valid
203 -----------------------
204 -- Change_Error_Text --
205 -----------------------
207 procedure Change_Error_Text
(Error_Id
: Error_Msg_Id
; New_Msg
: String) is
208 Save_Next
: Error_Msg_Id
;
209 Err_Id
: Error_Msg_Id
:= Error_Id
;
212 Set_Msg_Text
(New_Msg
, Errors
.Table
(Error_Id
).Sptr
);
213 Errors
.Table
(Error_Id
).Text
:= new String'(Msg_Buffer (1 .. Msglen));
215 -- If in immediate error message mode, output modified error message now
216 -- This is just a bit tricky, because we want to output just a single
217 -- message, and the messages we modified is already linked in. We solve
218 -- this by temporarily resetting its forward pointer to empty.
220 if Debug_Flag_OO then
221 Save_Next := Errors.Table (Error_Id).Next;
222 Errors.Table (Error_Id).Next := No_Error_Msg;
225 (Errors.Table (Error_Id).Line, Errors.Table (Error_Id).Sfile, True);
226 Output_Error_Msgs (Err_Id);
227 Errors.Table (Error_Id).Next := Save_Next;
229 end Change_Error_Text;
231 ------------------------
232 -- Compilation_Errors --
233 ------------------------
235 function Compilation_Errors return Boolean is
237 if not Finalize_Called then
240 return Erroutc.Compilation_Errors;
242 end Compilation_Errors;
244 --------------------------------------
245 -- Delete_Warning_And_Continuations --
246 --------------------------------------
248 procedure Delete_Warning_And_Continuations (Msg : Error_Msg_Id) is
252 pragma Assert (not Errors.Table (Msg).Msg_Cont);
257 M : Error_Msg_Object renames Errors.Table (Id);
260 if not M.Deleted then
262 Warnings_Detected := Warnings_Detected - 1;
265 Info_Messages := Info_Messages - 1;
269 Warnings_Treated_As_Errors := Warnings_Treated_As_Errors - 1;
274 exit when Id = No_Error_Msg;
275 exit when not Errors.Table (Id).Msg_Cont;
278 end Delete_Warning_And_Continuations;
284 -- Error_Msg posts a flag at the given location, except that if the
285 -- Flag_Location points within a generic template and corresponds to an
286 -- instantiation of this generic template, then the actual message will be
287 -- posted on the generic instantiation, along with additional messages
288 -- referencing the generic declaration.
290 procedure Error_Msg (Msg : String; Flag_Location : Source_Ptr) is
291 Sindex : Source_File_Index;
292 -- Source index for flag location
294 Orig_Loc : Source_Ptr;
295 -- Original location of Flag_Location (i.e. location in original
296 -- template in instantiation case, otherwise unchanged).
299 -- It is a fatal error to issue an error message when scanning from the
300 -- internal source buffer (see Sinput for further documentation)
302 pragma Assert (Sinput.Source /= Internal_Source_Ptr);
304 -- Return if all errors are to be ignored
306 if Errors_Must_Be_Ignored then
310 -- If we already have messages, and we are trying to place a message at
311 -- No_Location, then just ignore the attempt since we assume that what
312 -- is happening is some cascaded junk. Note that this is safe in the
313 -- sense that proceeding will surely bomb. We will also bomb if the flag
314 -- location is No_Location and we don't have any messages so far, but
315 -- that is a real bug and a legitimate bomb, so we go ahead.
317 if Flag_Location = No_Location
318 and then Total_Errors_Detected > 0
323 -- Start of processing for new message
325 Sindex := Get_Source_File_Index (Flag_Location);
326 Prescan_Message (Msg);
327 Orig_Loc := Original_Location (Flag_Location);
329 -- If the current location is in an instantiation, the issue arises of
330 -- whether to post the message on the template or the instantiation.
332 -- The way we decide is to see if we have posted the same message on
333 -- the template when we compiled the template (the template is always
334 -- compiled before any instantiations). For this purpose, we use a
335 -- separate table of messages. The reason we do this is twofold:
337 -- First, the messages can get changed by various processing
338 -- including the insertion of tokens etc, making it hard to
339 -- do the comparison.
341 -- Second, we will suppress a warning on a template if it is not in
342 -- the current extended source unit. That's reasonable and means we
343 -- don't want the warning on the instantiation here either, but it
344 -- does mean that the main error table would not in any case include
347 if Flag_Location = Orig_Loc then
348 Non_Instance_Msgs.Append ((new String'(Msg
), Flag_Location
));
349 Warn_On_Instance
:= False;
351 -- Here we have an instance message
354 -- Delete if debug flag off, and this message duplicates a message
355 -- already posted on the corresponding template
357 if not Debug_Flag_GG
then
358 for J
in Non_Instance_Msgs
.First
.. Non_Instance_Msgs
.Last
loop
359 if Msg
= Non_Instance_Msgs
.Table
(J
).Msg
.all
360 and then Non_Instance_Msgs
.Table
(J
).Loc
= Orig_Loc
367 -- No duplicate, so error/warning will be posted on instance
369 Warn_On_Instance
:= Is_Warning_Msg
;
372 -- Ignore warning message that is suppressed for this location. Note
373 -- that style checks are not considered warning messages for this
376 if Is_Warning_Msg
and then Warnings_Suppressed
(Orig_Loc
) /= No_String
380 -- For style messages, check too many messages so far
383 and then Maximum_Messages
/= 0
384 and then Warnings_Detected
>= Maximum_Messages
389 -- The idea at this stage is that we have two kinds of messages
391 -- First, we have those messages that are to be placed as requested at
392 -- Flag_Location. This includes messages that have nothing to do with
393 -- generics, and also messages placed on generic templates that reflect
394 -- an error in the template itself. For such messages we simply call
395 -- Error_Msg_Internal to place the message in the requested location.
397 if Instantiation
(Sindex
) = No_Location
then
398 Error_Msg_Internal
(Msg
, Flag_Location
, Flag_Location
, False);
402 -- If we are trying to flag an error in an instantiation, we may have
403 -- a generic contract violation. What we generate in this case is:
405 -- instantiation error at ...
406 -- original error message
410 -- warning: in instantiation at
411 -- warning: original warning message
413 -- All these messages are posted at the location of the top level
414 -- instantiation. If there are nested instantiations, then the
415 -- instantiation error message can be repeated, pointing to each
416 -- of the relevant instantiations.
418 -- Note: the instantiation mechanism is also shared for inlining of
419 -- subprogram bodies when front end inlining is done. In this case the
420 -- messages have the form:
422 -- in inlined body at ...
423 -- original error message
427 -- warning: in inlined body at
428 -- warning: original warning message
430 -- OK, here we have an instantiation error, and we need to generate the
431 -- error on the instantiation, rather than on the template.
434 Actual_Error_Loc
: Source_Ptr
;
435 -- Location of outer level instantiation in instantiation case, or
436 -- just a copy of Flag_Location in the normal case. This is the
437 -- location where all error messages will actually be posted.
439 Save_Error_Msg_Sloc
: constant Source_Ptr
:= Error_Msg_Sloc
;
440 -- Save possible location set for caller's message. We need to use
441 -- Error_Msg_Sloc for the location of the instantiation error but we
442 -- have to preserve a possible original value.
444 X
: Source_File_Index
;
446 Msg_Cont_Status
: Boolean;
447 -- Used to label continuation lines in instantiation case with
448 -- proper Msg_Cont status.
451 -- Loop to find highest level instantiation, where all error
452 -- messages will be placed.
456 Actual_Error_Loc
:= Instantiation
(X
);
457 X
:= Get_Source_File_Index
(Actual_Error_Loc
);
458 exit when Instantiation
(X
) = No_Location
;
461 -- Since we are generating the messages at the instantiation point in
462 -- any case, we do not want the references to the bad lines in the
463 -- instance to be annotated with the location of the instantiation.
465 Suppress_Instance_Location
:= True;
466 Msg_Cont_Status
:= False;
468 -- Loop to generate instantiation messages
470 Error_Msg_Sloc
:= Flag_Location
;
471 X
:= Get_Source_File_Index
(Flag_Location
);
472 while Instantiation
(X
) /= No_Location
loop
474 -- Suppress instantiation message on continuation lines
476 if Msg
(Msg
'First) /= '\' then
478 -- Case of inlined body
480 if Inlined_Body
(X
) then
481 if Is_Warning_Msg
or Is_Style_Msg
then
483 (Warn_Insertion
& "in inlined body #",
484 Actual_Error_Loc
, Flag_Location
, Msg_Cont_Status
);
487 ("error in inlined body #",
488 Actual_Error_Loc
, Flag_Location
, Msg_Cont_Status
);
491 -- Case of generic instantiation
494 if Is_Warning_Msg
or else Is_Style_Msg
then
496 (Warn_Insertion
& "in instantiation #",
497 Actual_Error_Loc
, Flag_Location
, Msg_Cont_Status
);
500 ("instantiation error #",
501 Actual_Error_Loc
, Flag_Location
, Msg_Cont_Status
);
506 Error_Msg_Sloc
:= Instantiation
(X
);
507 X
:= Get_Source_File_Index
(Error_Msg_Sloc
);
508 Msg_Cont_Status
:= True;
511 Suppress_Instance_Location
:= False;
512 Error_Msg_Sloc
:= Save_Error_Msg_Sloc
;
514 -- Here we output the original message on the outer instantiation
517 (Msg
, Actual_Error_Loc
, Flag_Location
, Msg_Cont_Status
);
521 --------------------------------
522 -- Error_Msg_Ada_2012_Feature --
523 --------------------------------
525 procedure Error_Msg_Ada_2012_Feature
(Feature
: String; Loc
: Source_Ptr
) is
527 if Ada_Version
< Ada_2012
then
528 Error_Msg
(Feature
& " is an Ada 2012 feature", Loc
);
530 if No
(Ada_Version_Pragma
) then
531 Error_Msg
("\unit must be compiled with -gnat2012 switch", Loc
);
533 Error_Msg_Sloc
:= Sloc
(Ada_Version_Pragma
);
534 Error_Msg
("\incompatible with Ada version set#", Loc
);
537 end Error_Msg_Ada_2012_Feature
;
543 procedure Error_Msg_AP
(Msg
: String) is
548 -- If we had saved the Scan_Ptr value after scanning the previous
549 -- token, then we would have exactly the right place for putting
550 -- the flag immediately at hand. However, that would add at least
551 -- two instructions to a Scan call *just* to service the possibility
552 -- of an Error_Msg_AP call. So instead we reconstruct that value.
554 -- We have two possibilities, start with Prev_Token_Ptr and skip over
555 -- the current token, which is made harder by the possibility that this
556 -- token may be in error, or start with Token_Ptr and work backwards.
557 -- We used to take the second approach, but it's hard because of
558 -- comments, and harder still because things that look like comments
559 -- can appear inside strings. So now we take the first approach.
561 -- Note: in the case where there is no previous token, Prev_Token_Ptr
562 -- is set to Source_First, which is a reasonable position for the
563 -- error flag in this situation.
565 S1
:= Prev_Token_Ptr
;
568 -- If the previous token is a string literal, we need a special approach
569 -- since there may be white space inside the literal and we don't want
570 -- to stop on that white space.
572 -- Note: since this is an error recovery issue anyway, it is not worth
573 -- worrying about special UTF_32 line terminator characters here.
575 if Prev_Token
= Tok_String_Literal
then
579 if Source
(S1
) = C
then
581 exit when Source
(S1
) /= C
;
582 elsif Source
(S1
) in Line_Terminator
then
587 -- Character literal also needs special handling
589 elsif Prev_Token
= Tok_Char_Literal
then
592 -- Otherwise we search forward for the end of the current token, marked
593 -- by a line terminator, white space, a comment symbol or if we bump
594 -- into the following token (i.e. the current token).
596 -- Again, it is not worth worrying about UTF_32 special line terminator
597 -- characters in this context, since this is only for error recovery.
600 while Source
(S1
) not in Line_Terminator
601 and then Source
(S1
) /= ' '
602 and then Source
(S1
) /= ASCII
.HT
603 and then (Source
(S1
) /= '-' or else Source
(S1
+ 1) /= '-')
604 and then S1
/= Token_Ptr
610 -- S1 is now set to the location for the flag
619 procedure Error_Msg_BC
(Msg
: String) is
621 -- If we are at end of file, post the flag after the previous token
623 if Token
= Tok_EOF
then
626 -- If we are at start of file, post the flag at the current token
628 elsif Token_Ptr
= Source_First
(Current_Source_File
) then
631 -- If the character before the current token is a space or a horizontal
632 -- tab, then we place the flag on this character (in the case of a tab
633 -- we would really like to place it in the "last" character of the tab
634 -- space, but that it too much trouble to worry about).
636 elsif Source
(Token_Ptr
- 1) = ' '
637 or else Source
(Token_Ptr
- 1) = ASCII
.HT
639 Error_Msg
(Msg
, Token_Ptr
- 1);
641 -- If there is no space or tab before the current token, then there is
642 -- no room to place the flag before the token, so we place it on the
643 -- token instead (this happens for example at the start of a line).
646 Error_Msg
(Msg
, Token_Ptr
);
654 procedure Error_Msg_CRT
(Feature
: String; N
: Node_Id
) is
655 CNRT
: constant String := " not allowed in no run time mode";
656 CCRT
: constant String := " not supported by configuration>";
658 S
: String (1 .. Feature
'Length + 1 + CCRT
'Length);
663 S
(2 .. Feature
'Length + 1) := Feature
;
664 L
:= Feature
'Length + 2;
666 if No_Run_Time_Mode
then
667 S
(L
.. L
+ CNRT
'Length - 1) := CNRT
;
668 L
:= L
+ CNRT
'Length - 1;
670 else pragma Assert
(Configurable_Run_Time_Mode
);
671 S
(L
.. L
+ CCRT
'Length - 1) := CCRT
;
672 L
:= L
+ CCRT
'Length - 1;
675 Error_Msg_N
(S
(1 .. L
), N
);
676 Configurable_Run_Time_Violations
:= Configurable_Run_Time_Violations
+ 1;
683 procedure Error_Msg_PT
(Typ
: Node_Id
; Subp
: Node_Id
) is
686 ("first formal of & must be of mode `OUT`, `IN OUT` or " &
687 "access-to-variable", Typ
, Subp
);
689 ("\in order to be overridden by protected procedure or entry " &
690 "(RM 9.4(11.9/2))", Typ
);
697 procedure Error_Msg_F
(Msg
: String; N
: Node_Id
) is
699 Error_Msg_NEL
(Msg
, N
, N
, Sloc
(First_Node
(N
)));
706 procedure Error_Msg_FE
709 E
: Node_Or_Entity_Id
)
712 Error_Msg_NEL
(Msg
, N
, E
, Sloc
(First_Node
(N
)));
715 ------------------------
716 -- Error_Msg_Internal --
717 ------------------------
719 procedure Error_Msg_Internal
725 Next_Msg
: Error_Msg_Id
;
726 -- Pointer to next message at insertion point
728 Prev_Msg
: Error_Msg_Id
;
729 -- Pointer to previous message at insertion point
731 Temp_Msg
: Error_Msg_Id
;
734 -- Set if warning to be treated as error
736 procedure Handle_Serious_Error
;
737 -- Internal procedure to do all error message handling for a serious
738 -- error message, other than bumping the error counts and arranging
739 -- for the message to be output.
741 --------------------------
742 -- Handle_Serious_Error --
743 --------------------------
745 procedure Handle_Serious_Error
is
747 -- Turn off code generation if not done already
749 if Operating_Mode
= Generate_Code
then
750 Operating_Mode
:= Check_Semantics
;
751 Expander_Active
:= False;
754 -- Set the fatal error flag in the unit table unless we are in
755 -- Try_Semantics mode. This stops the semantics from being performed
756 -- if we find a serious error. This is skipped if we are currently
757 -- dealing with the configuration pragma file.
759 if not Try_Semantics
and then Current_Source_Unit
/= No_Unit
then
760 Set_Fatal_Error
(Get_Source_Unit
(Sptr
));
762 end Handle_Serious_Error
;
764 -- Start of processing for Error_Msg_Internal
767 if Raise_Exception_On_Error
/= 0 then
768 raise Error_Msg_Exception
;
771 Continuation
:= Msg_Cont
;
772 Continuation_New_Line
:= False;
773 Suppress_Message
:= False;
774 Kill_Message
:= False;
775 Set_Msg_Text
(Msg
, Sptr
);
777 -- Kill continuation if parent message killed
779 if Continuation
and Last_Killed
then
783 -- Return without doing anything if message is suppressed
786 and then not All_Errors_Mode
787 and then not Is_Warning_Msg
788 and then not Is_Unconditional_Msg
790 if not Continuation
then
797 -- Return without doing anything if message is killed and this is not
798 -- the first error message. The philosophy is that if we get a weird
799 -- error message and we already have had a message, then we hope the
800 -- weird message is a junk cascaded message
803 and then not All_Errors_Mode
804 and then Total_Errors_Detected
/= 0
806 if not Continuation
then
813 -- Special check for warning message to see if it should be output
815 if Is_Warning_Msg
then
817 -- Immediate return if warning message and warnings are suppressed
819 if Warnings_Suppressed
(Optr
) /= No_String
821 Warnings_Suppressed
(Sptr
) /= No_String
823 Cur_Msg
:= No_Error_Msg
;
827 -- If the flag location is in the main extended source unit then for
828 -- sure we want the warning since it definitely belongs
830 if In_Extended_Main_Source_Unit
(Sptr
) then
833 -- If the main unit has not been read yet. the warning must be on
834 -- a configuration file: gnat.adc or user-defined. This means we
835 -- are not parsing the main unit yet, so skip following checks.
837 elsif No
(Cunit
(Main_Unit
)) then
840 -- If the flag location is not in the main extended source unit, then
841 -- we want to eliminate the warning, unless it is in the extended
842 -- main code unit and we want warnings on the instance.
844 elsif In_Extended_Main_Code_Unit
(Sptr
) and then Warn_On_Instance
then
847 -- Keep warning if debug flag G set
849 elsif Debug_Flag_GG
then
852 -- Keep warning if message text contains !!
854 elsif Has_Double_Exclam
then
857 -- Here is where we delete a warning from a with'ed unit
860 Cur_Msg
:= No_Error_Msg
;
862 if not Continuation
then
870 -- If message is to be ignored in special ignore message mode, this is
871 -- where we do this special processing, bypassing message output.
873 if Ignore_Errors_Enable
> 0 then
874 if Is_Serious_Error
then
875 Handle_Serious_Error
;
881 -- If error message line length set, and this is a continuation message
882 -- then all we do is to append the text to the text of the last message
883 -- with a comma space separator (eliminating a possible (style) or
886 if Error_Msg_Line_Length
/= 0 and then Continuation
then
887 Cur_Msg
:= Errors
.Last
;
890 Oldm
: String_Ptr
:= Errors
.Table
(Cur_Msg
).Text
;
891 Newm
: String (1 .. Oldm
'Last + 2 + Msglen
);
896 -- First copy old message to new one and free it
898 Newm
(Oldm
'Range) := Oldm
.all;
902 -- Remove (style) or info: at start of message
904 if Msglen
> 8 and then Msg_Buffer
(1 .. 8) = "(style) " then
907 elsif Msglen
> 6 and then Msg_Buffer
(1 .. 6) = "info: " then
914 -- Now deal with separation between messages. Normally this is
915 -- simply comma space, but there are some special cases.
917 -- If continuation new line, then put actual NL character in msg
919 if Continuation_New_Line
then
921 Newm
(Newl
) := ASCII
.LF
;
923 -- If continuation message is enclosed in parentheses, then
924 -- special treatment (don't need a comma, and we want to combine
925 -- successive parenthetical remarks into a single one with
926 -- separating commas).
928 elsif Msg_Buffer
(M
) = '(' and then Msg_Buffer
(Msglen
) = ')' then
930 -- Case where existing message ends in right paren, remove
931 -- and separate parenthetical remarks with a comma.
933 if Newm
(Newl
) = ')' then
935 Msg_Buffer
(M
) := ' ';
937 -- Case where we are adding new parenthetical comment
944 -- Case where continuation not in parens and no new line
947 Newm
(Newl
+ 1 .. Newl
+ 2) := ", ";
951 -- Append new message
953 Newm
(Newl
+ 1 .. Newl
+ Msglen
- M
+ 1) :=
954 Msg_Buffer
(M
.. Msglen
);
955 Newl
:= Newl
+ Msglen
- M
+ 1;
956 Errors
.Table
(Cur_Msg
).Text
:= new String'(Newm (1 .. Newl));
958 -- Update warning msg flag and message doc char if needed
960 if Is_Warning_Msg then
961 if not Errors.Table (Cur_Msg).Warn then
962 Errors.Table (Cur_Msg).Warn := True;
963 Errors.Table (Cur_Msg).Warn_Chr := Warning_Msg_Char;
965 elsif Warning_Msg_Char /= ' ' then
966 Errors.Table (Cur_Msg).Warn_Chr := Warning_Msg_Char;
974 -- Here we build a new error object
977 ((Text => new String'(Msg_Buffer
(1 .. Msglen
)),
978 Next
=> No_Error_Msg
,
979 Prev
=> No_Error_Msg
,
982 Sfile
=> Get_Source_File_Index
(Sptr
),
983 Line
=> Get_Physical_Line_Number
(Sptr
),
984 Col
=> Get_Column_Number
(Sptr
),
985 Warn
=> Is_Warning_Msg
,
987 Check
=> Is_Check_Msg
,
988 Warn_Err
=> False, -- reset below
989 Warn_Chr
=> Warning_Msg_Char
,
990 Style
=> Is_Style_Msg
,
991 Serious
=> Is_Serious_Error
,
992 Uncond
=> Is_Unconditional_Msg
,
993 Msg_Cont
=> Continuation
,
995 Cur_Msg
:= Errors
.Last
;
997 -- Test if warning to be treated as error
1001 and then (Warning_Treated_As_Error
(Msg_Buffer
(1 .. Msglen
))
1003 Warning_Treated_As_Error
(Get_Warning_Tag
(Cur_Msg
)));
1005 -- Propagate Warn_Err to this message and preceding continuations
1007 for J
in reverse 1 .. Errors
.Last
loop
1008 Errors
.Table
(J
).Warn_Err
:= Warn_Err
;
1009 exit when not Errors
.Table
(J
).Msg_Cont
;
1012 -- If immediate errors mode set, output error message now. Also output
1013 -- now if the -d1 debug flag is set (so node number message comes out
1014 -- just before actual error message)
1016 if Debug_Flag_OO
or else Debug_Flag_1
then
1019 (Errors
.Table
(Cur_Msg
).Line
, Errors
.Table
(Cur_Msg
).Sfile
, True);
1020 Temp_Msg
:= Cur_Msg
;
1021 Output_Error_Msgs
(Temp_Msg
);
1023 -- If not in immediate errors mode, then we insert the message in the
1024 -- error chain for later output by Finalize. The messages are sorted
1025 -- first by unit (main unit comes first), and within a unit by source
1026 -- location (earlier flag location first in the chain).
1029 -- First a quick check, does this belong at the very end of the chain
1030 -- of error messages. This saves a lot of time in the normal case if
1031 -- there are lots of messages.
1033 if Last_Error_Msg
/= No_Error_Msg
1034 and then Errors
.Table
(Cur_Msg
).Sfile
=
1035 Errors
.Table
(Last_Error_Msg
).Sfile
1036 and then (Sptr
> Errors
.Table
(Last_Error_Msg
).Sptr
1038 (Sptr
= Errors
.Table
(Last_Error_Msg
).Sptr
1040 Optr
> Errors
.Table
(Last_Error_Msg
).Optr
))
1042 Prev_Msg
:= Last_Error_Msg
;
1043 Next_Msg
:= No_Error_Msg
;
1045 -- Otherwise do a full sequential search for the insertion point
1048 Prev_Msg
:= No_Error_Msg
;
1049 Next_Msg
:= First_Error_Msg
;
1050 while Next_Msg
/= No_Error_Msg
loop
1052 Errors
.Table
(Cur_Msg
).Sfile
< Errors
.Table
(Next_Msg
).Sfile
;
1054 if Errors
.Table
(Cur_Msg
).Sfile
= Errors
.Table
(Next_Msg
).Sfile
1056 exit when Sptr
< Errors
.Table
(Next_Msg
).Sptr
1057 or else (Sptr
= Errors
.Table
(Next_Msg
).Sptr
1058 and then Optr
< Errors
.Table
(Next_Msg
).Optr
);
1061 Prev_Msg
:= Next_Msg
;
1062 Next_Msg
:= Errors
.Table
(Next_Msg
).Next
;
1066 -- Now we insert the new message in the error chain. The insertion
1067 -- point for the message is after Prev_Msg and before Next_Msg.
1069 -- The possible insertion point for the new message is after Prev_Msg
1070 -- and before Next_Msg. However, this is where we do a special check
1071 -- for redundant parsing messages, defined as messages posted on the
1072 -- same line. The idea here is that probably such messages are junk
1073 -- from the parser recovering. In full errors mode, we don't do this
1074 -- deletion, but otherwise such messages are discarded at this stage.
1076 if Prev_Msg
/= No_Error_Msg
1077 and then Errors
.Table
(Prev_Msg
).Line
=
1078 Errors
.Table
(Cur_Msg
).Line
1079 and then Errors
.Table
(Prev_Msg
).Sfile
=
1080 Errors
.Table
(Cur_Msg
).Sfile
1081 and then Compiler_State
= Parsing
1082 and then not All_Errors_Mode
1084 -- Don't delete unconditional messages and at this stage, don't
1085 -- delete continuation lines (we attempted to delete those earlier
1086 -- if the parent message was deleted.
1088 if not Errors
.Table
(Cur_Msg
).Uncond
1089 and then not Continuation
1091 -- Don't delete if prev msg is warning and new msg is an error.
1092 -- This is because we don't want a real error masked by a
1093 -- warning. In all other cases (that is parse errors for the
1094 -- same line that are not unconditional) we do delete the
1095 -- message. This helps to avoid junk extra messages from
1096 -- cascaded parsing errors
1098 if not (Errors
.Table
(Prev_Msg
).Warn
1100 Errors
.Table
(Prev_Msg
).Style
)
1102 (Errors
.Table
(Cur_Msg
).Warn
1104 Errors
.Table
(Cur_Msg
).Style
)
1106 -- All tests passed, delete the message by simply returning
1107 -- without any further processing.
1109 if not Continuation
then
1110 Last_Killed
:= True;
1118 -- Come here if message is to be inserted in the error chain
1120 if not Continuation
then
1121 Last_Killed
:= False;
1124 if Prev_Msg
= No_Error_Msg
then
1125 First_Error_Msg
:= Cur_Msg
;
1127 Errors
.Table
(Prev_Msg
).Next
:= Cur_Msg
;
1130 Errors
.Table
(Cur_Msg
).Next
:= Next_Msg
;
1132 if Next_Msg
= No_Error_Msg
then
1133 Last_Error_Msg
:= Cur_Msg
;
1137 -- Bump appropriate statistics count
1139 if Errors
.Table
(Cur_Msg
).Warn
or else Errors
.Table
(Cur_Msg
).Style
then
1140 Warnings_Detected
:= Warnings_Detected
+ 1;
1142 if Errors
.Table
(Cur_Msg
).Info
then
1143 Info_Messages
:= Info_Messages
+ 1;
1146 elsif Errors
.Table
(Cur_Msg
).Check
then
1147 Check_Messages
:= Check_Messages
+ 1;
1150 Total_Errors_Detected
:= Total_Errors_Detected
+ 1;
1152 if Errors
.Table
(Cur_Msg
).Serious
then
1153 Serious_Errors_Detected
:= Serious_Errors_Detected
+ 1;
1154 Handle_Serious_Error
;
1158 -- Record warning message issued
1160 if Errors
.Table
(Cur_Msg
).Warn
1161 and then not Errors
.Table
(Cur_Msg
).Msg_Cont
1163 Warning_Msg
:= Cur_Msg
;
1166 -- If too many warnings turn off warnings
1168 if Maximum_Messages
/= 0 then
1169 if Warnings_Detected
= Maximum_Messages
then
1170 Warning_Mode
:= Suppress
;
1173 -- If too many errors abandon compilation
1175 if Total_Errors_Detected
= Maximum_Messages
then
1176 raise Unrecoverable_Error
;
1179 end Error_Msg_Internal
;
1185 procedure Error_Msg_N
(Msg
: String; N
: Node_Or_Entity_Id
) is
1187 Error_Msg_NEL
(Msg
, N
, N
, Sloc
(N
));
1194 procedure Error_Msg_NE
1196 N
: Node_Or_Entity_Id
;
1197 E
: Node_Or_Entity_Id
)
1200 Error_Msg_NEL
(Msg
, N
, E
, Sloc
(N
));
1207 procedure Error_Msg_NEL
1209 N
: Node_Or_Entity_Id
;
1210 E
: Node_Or_Entity_Id
;
1211 Flag_Location
: Source_Ptr
)
1214 if Special_Msg_Delete
(Msg
, N
, E
) then
1218 Prescan_Message
(Msg
);
1220 -- Special handling for warning messages
1222 if Is_Warning_Msg
then
1224 -- Suppress if no warnings set for either entity or node
1226 if No_Warnings
(N
) or else No_Warnings
(E
) then
1228 -- Disable any continuation messages as well
1230 Last_Killed
:= True;
1234 -- Suppress if inside loop that is known to be null or is probably
1235 -- null (case where loop executes only if invalid values present).
1236 -- In either case warnings in the loop are likely to be junk.
1243 while Present
(P
) loop
1244 if Nkind
(P
) = N_Loop_Statement
1245 and then Suppress_Loop_Warnings
(P
)
1255 -- Test for message to be output
1258 or else Is_Unconditional_Msg
1259 or else Is_Warning_Msg
1261 or else (Msg
(Msg
'First) = '\' and then not Last_Killed
)
1264 Error_Msg_Node_1
:= E
;
1265 Error_Msg
(Msg
, Flag_Location
);
1268 Last_Killed
:= True;
1271 if not (Is_Warning_Msg
or Is_Style_Msg
) then
1280 procedure Error_Msg_NW
1283 N
: Node_Or_Entity_Id
)
1287 and then In_Extended_Main_Source_Unit
(N
)
1288 and then Comes_From_Source
(N
)
1290 Error_Msg_NEL
(Msg
, N
, N
, Sloc
(N
));
1298 procedure Error_Msg_S
(Msg
: String) is
1300 Error_Msg
(Msg
, Scan_Ptr
);
1307 procedure Error_Msg_SC
(Msg
: String) is
1309 -- If we are at end of file, post the flag after the previous token
1311 if Token
= Tok_EOF
then
1314 -- For all other cases the message is posted at the current token
1318 Error_Msg
(Msg
, Token_Ptr
);
1326 procedure Error_Msg_SP
(Msg
: String) is
1328 -- Note: in the case where there is no previous token, Prev_Token_Ptr
1329 -- is set to Source_First, which is a reasonable position for the
1330 -- error flag in this situation
1332 Error_Msg
(Msg
, Prev_Token_Ptr
);
1339 procedure Finalize
(Last_Call
: Boolean) is
1344 procedure Delete_Warning
(E
: Error_Msg_Id
);
1345 -- Delete a warning msg if not already deleted and adjust warning count
1347 --------------------
1348 -- Delete_Warning --
1349 --------------------
1351 procedure Delete_Warning
(E
: Error_Msg_Id
) is
1353 if not Errors
.Table
(E
).Deleted
then
1354 Errors
.Table
(E
).Deleted
:= True;
1355 Warnings_Detected
:= Warnings_Detected
- 1;
1357 if Errors
.Table
(E
).Info
then
1358 Info_Messages
:= Info_Messages
- 1;
1361 if Errors
.Table
(E
).Warn_Err
then
1362 Warnings_Treated_As_Errors
:= Warnings_Treated_As_Errors
- 1;
1367 -- Start of processing for Finalize
1370 -- Set Prev pointers
1372 Cur
:= First_Error_Msg
;
1373 while Cur
/= No_Error_Msg
loop
1374 Nxt
:= Errors
.Table
(Cur
).Next
;
1375 exit when Nxt
= No_Error_Msg
;
1376 Errors
.Table
(Nxt
).Prev
:= Cur
;
1380 -- Eliminate any duplicated error messages from the list. This is
1381 -- done after the fact to avoid problems with Change_Error_Text.
1383 Cur
:= First_Error_Msg
;
1384 while Cur
/= No_Error_Msg
loop
1385 Nxt
:= Errors
.Table
(Cur
).Next
;
1388 while F
/= No_Error_Msg
1389 and then Errors
.Table
(F
).Sptr
= Errors
.Table
(Cur
).Sptr
1391 Check_Duplicate_Message
(Cur
, F
);
1392 F
:= Errors
.Table
(F
).Next
;
1398 -- Mark any messages suppressed by specific warnings as Deleted
1400 Cur
:= First_Error_Msg
;
1401 while Cur
/= No_Error_Msg
loop
1403 CE
: Error_Msg_Object
renames Errors
.Table
(Cur
);
1404 Tag
: constant String := Get_Warning_Tag
(Cur
);
1407 if (CE
.Warn
and not CE
.Deleted
)
1409 (Warning_Specifically_Suppressed
(CE
.Sptr
, CE
.Text
, Tag
) /=
1412 Warning_Specifically_Suppressed
(CE
.Optr
, CE
.Text
, Tag
) /=
1415 Delete_Warning
(Cur
);
1417 -- If this is a continuation, delete previous parts of message
1420 while Errors
.Table
(F
).Msg_Cont
loop
1421 F
:= Errors
.Table
(F
).Prev
;
1422 exit when F
= No_Error_Msg
;
1426 -- Delete any following continuations
1430 F
:= Errors
.Table
(F
).Next
;
1431 exit when F
= No_Error_Msg
;
1432 exit when not Errors
.Table
(F
).Msg_Cont
;
1438 Cur
:= Errors
.Table
(Cur
).Next
;
1441 Finalize_Called
:= True;
1443 -- Check consistency of specific warnings (may add warnings). We only
1444 -- do this on the last call, after all possible warnings are posted.
1447 Validate_Specific_Warnings
(Error_Msg
'Access);
1455 function First_Node
(C
: Node_Id
) return Node_Id
is
1456 Orig
: constant Node_Id
:= Original_Node
(C
);
1457 Loc
: constant Source_Ptr
:= Sloc
(Orig
);
1458 Sfile
: constant Source_File_Index
:= Get_Source_File_Index
(Loc
);
1462 function Test_Earlier
(N
: Node_Id
) return Traverse_Result
;
1463 -- Function applied to every node in the construct
1465 procedure Search_Tree_First
is new Traverse_Proc
(Test_Earlier
);
1466 -- Create traversal procedure
1472 function Test_Earlier
(N
: Node_Id
) return Traverse_Result
is
1473 Norig
: constant Node_Id
:= Original_Node
(N
);
1474 Loc
: constant Source_Ptr
:= Sloc
(Norig
);
1477 -- Check for earlier
1481 -- Ignore nodes with no useful location information
1483 and then Loc
/= Standard_Location
1484 and then Loc
/= No_Location
1486 -- Ignore nodes from a different file. This ensures against cases
1487 -- of strange foreign code somehow being present. We don't want
1488 -- wild placement of messages if that happens.
1490 and then Get_Source_File_Index
(Loc
) = Sfile
1499 -- Start of processing for First_Node
1502 if Nkind
(Orig
) in N_Subexpr
then
1505 Search_Tree_First
(Orig
);
1517 function First_Sloc
(N
: Node_Id
) return Source_Ptr
is
1518 SI
: constant Source_File_Index
:= Source_Index
(Get_Source_Unit
(N
));
1519 SF
: constant Source_Ptr
:= Source_First
(SI
);
1524 F
:= First_Node
(N
);
1527 -- The following circuit is a bit subtle. When we have parenthesized
1528 -- expressions, then the Sloc will not record the location of the paren,
1529 -- but we would like to post the flag on the paren. So what we do is to
1530 -- crawl up the tree from the First_Node, adjusting the Sloc value for
1531 -- any parentheses we know are present. Yes, we know this circuit is not
1532 -- 100% reliable (e.g. because we don't record all possible paren level
1533 -- values), but this is only for an error message so it is good enough.
1536 Paren_Loop
: for J
in 1 .. Paren_Count
(F
) loop
1538 -- We don't look more than 12 characters behind the current
1539 -- location, and in any case not past the front of the source.
1541 Search_Loop
: for K
in 1 .. 12 loop
1542 exit Search_Loop
when S
= SF
;
1544 if Source_Text
(SI
) (S
- 1) = '(' then
1548 elsif Source_Text
(SI
) (S
- 1) <= ' ' then
1554 end loop Search_Loop
;
1555 end loop Paren_Loop
;
1557 exit Node_Loop
when F
= N
;
1559 exit Node_Loop
when Nkind
(F
) not in N_Subexpr
;
1565 -----------------------
1566 -- Get_Ignore_Errors --
1567 -----------------------
1569 function Get_Ignore_Errors
return Boolean is
1571 return Errors_Must_Be_Ignored
;
1572 end Get_Ignore_Errors
;
1578 procedure Initialize
is
1581 First_Error_Msg
:= No_Error_Msg
;
1582 Last_Error_Msg
:= No_Error_Msg
;
1583 Serious_Errors_Detected
:= 0;
1584 Total_Errors_Detected
:= 0;
1585 Warnings_Treated_As_Errors
:= 0;
1586 Warnings_Detected
:= 0;
1588 Warnings_As_Errors_Count
:= 0;
1589 Cur_Msg
:= No_Error_Msg
;
1592 -- Initialize warnings tables
1595 Specific_Warnings
.Init
;
1602 function No_Warnings
(N
: Node_Or_Entity_Id
) return Boolean is
1604 if Error_Posted
(N
) then
1607 elsif Nkind
(N
) in N_Entity
and then Has_Warnings_Off
(N
) then
1610 elsif Is_Entity_Name
(N
)
1611 and then Present
(Entity
(N
))
1612 and then Has_Warnings_Off
(Entity
(N
))
1625 function OK_Node
(N
: Node_Id
) return Boolean is
1626 K
: constant Node_Kind
:= Nkind
(N
);
1629 if Error_Posted
(N
) then
1632 elsif K
in N_Has_Etype
1633 and then Present
(Etype
(N
))
1634 and then Error_Posted
(Etype
(N
))
1639 or else K
= N_Attribute_Reference
1640 or else K
= N_Character_Literal
1641 or else K
= N_Expanded_Name
1642 or else K
= N_Identifier
1643 or else K
= N_Operator_Symbol
)
1644 and then Present
(Entity
(N
))
1645 and then Error_Posted
(Entity
(N
))
1653 ---------------------
1654 -- Output_Messages --
1655 ---------------------
1657 procedure Output_Messages
is
1661 procedure Write_Error_Summary
;
1662 -- Write error summary
1664 procedure Write_Header
(Sfile
: Source_File_Index
);
1665 -- Write header line (compiling or checking given file)
1667 procedure Write_Max_Errors
;
1668 -- Write message if max errors reached
1670 -------------------------
1671 -- Write_Error_Summary --
1672 -------------------------
1674 procedure Write_Error_Summary
is
1676 -- Extra blank line if error messages or source listing were output
1678 if Total_Errors_Detected
+ Warnings_Detected
> 0 or else Full_List
1683 -- Message giving number of lines read and number of errors detected.
1684 -- This normally goes to Standard_Output. The exception is when brief
1685 -- mode is not set, verbose mode (or full list mode) is set, and
1686 -- there are errors. In this case we send the message to standard
1687 -- error to make sure that *something* appears on standard error
1688 -- in an error situation.
1690 if Total_Errors_Detected
+ Warnings_Detected
/= 0
1691 and then not Brief_Output
1692 and then (Verbose_Mode
or Full_List
)
1697 -- Message giving total number of lines. Don't give this message if
1698 -- the Main_Source line is unknown (this happens in error situations,
1699 -- e.g. when integrated preprocessing fails).
1701 if Main_Source_File
/= No_Source_File
then
1703 Write_Int
(Num_Source_Lines
(Main_Source_File
));
1705 if Num_Source_Lines
(Main_Source_File
) = 1 then
1706 Write_Str
(" line: ");
1708 Write_Str
(" lines: ");
1712 if Total_Errors_Detected
= 0 then
1713 Write_Str
("No errors");
1715 elsif Total_Errors_Detected
= 1 then
1716 Write_Str
("1 error");
1719 Write_Int
(Total_Errors_Detected
);
1720 Write_Str
(" errors");
1723 if Warnings_Detected
- Info_Messages
/= 0 then
1725 Write_Int
(Warnings_Detected
);
1726 Write_Str
(" warning");
1728 if Warnings_Detected
- Info_Messages
/= 1 then
1732 if Warning_Mode
= Treat_As_Error
then
1733 Write_Str
(" (treated as error");
1735 if Warnings_Detected
/= 1 then
1741 elsif Warnings_Treated_As_Errors
/= 0 then
1743 Write_Int
(Warnings_Treated_As_Errors
);
1744 Write_Str
(" treated as errors)");
1748 if Info_Messages
/= 0 then
1750 Write_Int
(Info_Messages
);
1751 Write_Str
(" info message");
1753 if Info_Messages
> 1 then
1759 Set_Standard_Output
;
1760 end Write_Error_Summary
;
1766 procedure Write_Header
(Sfile
: Source_File_Index
) is
1768 if Verbose_Mode
or Full_List
then
1769 if Original_Operating_Mode
= Generate_Code
then
1770 Write_Str
("Compiling: ");
1772 Write_Str
("Checking: ");
1775 Write_Name
(Full_File_Name
(Sfile
));
1777 if not Debug_Flag_7
then
1779 Write_Str
("Source file time stamp: ");
1780 Write_Time_Stamp
(Sfile
);
1782 Write_Str
("Compiled at: " & Compilation_Time
);
1789 ----------------------
1790 -- Write_Max_Errors --
1791 ----------------------
1793 procedure Write_Max_Errors
is
1795 if Maximum_Messages
/= 0 then
1796 if Warnings_Detected
>= Maximum_Messages
then
1798 Write_Line
("maximum number of warnings output");
1799 Write_Line
("any further warnings suppressed");
1800 Set_Standard_Output
;
1803 -- If too many errors print message
1805 if Total_Errors_Detected
>= Maximum_Messages
then
1807 Write_Line
("fatal error: maximum number of errors detected");
1808 Set_Standard_Output
;
1811 end Write_Max_Errors
;
1813 -- Start of processing for Output_Messages
1816 -- Error if Finalize has not been called
1818 if not Finalize_Called
then
1819 raise Program_Error
;
1822 -- Reset current error source file if the main unit has a pragma
1823 -- Source_Reference. This ensures outputting the proper name of
1824 -- the source file in this situation.
1826 if Main_Source_File
= No_Source_File
1827 or else Num_SRef_Pragmas
(Main_Source_File
) /= 0
1829 Current_Error_Source_File
:= No_Source_File
;
1834 if Brief_Output
or (not Full_List
and not Verbose_Mode
) then
1837 E
:= First_Error_Msg
;
1838 while E
/= No_Error_Msg
loop
1839 if not Errors
.Table
(E
).Deleted
and then not Debug_Flag_KK
then
1840 if Full_Path_Name_For_Brief_Errors
then
1841 Write_Name
(Full_Ref_Name
(Errors
.Table
(E
).Sfile
));
1843 Write_Name
(Reference_Name
(Errors
.Table
(E
).Sfile
));
1847 Write_Int
(Int
(Physical_To_Logical
1848 (Errors
.Table
(E
).Line
,
1849 Errors
.Table
(E
).Sfile
)));
1852 if Errors
.Table
(E
).Col
< 10 then
1856 Write_Int
(Int
(Errors
.Table
(E
).Col
));
1858 Output_Msg_Text
(E
);
1862 E
:= Errors
.Table
(E
).Next
;
1865 Set_Standard_Output
;
1868 -- Full source listing case
1871 List_Pragmas_Index
:= 1;
1872 List_Pragmas_Mode
:= True;
1873 E
:= First_Error_Msg
;
1875 -- Normal case, to stdout (copyright notice already output)
1877 if Full_List_File_Name
= null then
1878 if not Debug_Flag_7
then
1885 Create_List_File_Access
.all (Full_List_File_Name
.all);
1886 Set_Special_Output
(Write_List_Info_Access
.all'Access);
1888 -- Write copyright notice to file
1890 if not Debug_Flag_7
then
1891 Write_Str
("GNAT ");
1892 Write_Str
(Gnat_Version_String
);
1894 Write_Str
("Copyright 1992-" &
1896 ", Free Software Foundation, Inc.");
1901 -- First list extended main source file units with errors
1903 for U
in Main_Unit
.. Last_Unit
loop
1904 if In_Extended_Main_Source_Unit
(Cunit_Entity
(U
))
1906 -- If debug flag d.m is set, only the main source is listed
1908 and then (U
= Main_Unit
or else not Debug_Flag_Dot_M
)
1910 -- If the unit of the entity does not come from source, it is
1911 -- an implicit subprogram declaration for a child subprogram.
1912 -- Do not emit errors for it, they are listed with the body.
1915 (No
(Cunit_Entity
(U
))
1916 or else Comes_From_Source
(Cunit_Entity
(U
))
1917 or else not Is_Subprogram
(Cunit_Entity
(U
)))
1919 -- If the compilation unit associated with this unit does not
1920 -- come from source, it means it is an instantiation that should
1921 -- not be included in the source listing.
1923 and then Comes_From_Source
(Cunit
(U
))
1926 Sfile
: constant Source_File_Index
:= Source_Index
(U
);
1931 -- Only write the header if Sfile is known
1933 if Sfile
/= No_Source_File
then
1934 Write_Header
(Sfile
);
1938 -- Normally, we don't want an "error messages from file"
1939 -- message when listing the entire file, so we set the
1940 -- current source file as the current error source file.
1941 -- However, the old style of doing things was to list this
1942 -- message if pragma Source_Reference is present, even for
1943 -- the main unit. Since the purpose of the -gnatd.m switch
1944 -- is to duplicate the old behavior, we skip the reset if
1945 -- this debug flag is set.
1947 if not Debug_Flag_Dot_M
then
1948 Current_Error_Source_File
:= Sfile
;
1951 -- Only output the listing if Sfile is known, to avoid
1952 -- crashing the compiler.
1954 if Sfile
/= No_Source_File
then
1955 for N
in 1 .. Last_Source_Line
(Sfile
) loop
1956 while E
/= No_Error_Msg
1957 and then Errors
.Table
(E
).Deleted
1959 E
:= Errors
.Table
(E
).Next
;
1964 and then Errors
.Table
(E
).Line
= N
1965 and then Errors
.Table
(E
).Sfile
= Sfile
;
1967 Output_Source_Line
(N
, Sfile
, Err_Flag
);
1970 Output_Error_Msgs
(E
);
1972 if not Debug_Flag_2
then
1982 -- Then output errors, if any, for subsidiary units not in the
1983 -- main extended unit.
1985 -- Note: if debug flag d.m set, include errors for any units other
1986 -- than the main unit in the extended source unit (e.g. spec and
1987 -- subunits for a body).
1989 while E
/= No_Error_Msg
1990 and then (not In_Extended_Main_Source_Unit
(Errors
.Table
(E
).Sptr
)
1993 and then Get_Source_Unit
1994 (Errors
.Table
(E
).Sptr
) /= Main_Unit
))
1996 if Errors
.Table
(E
).Deleted
then
1997 E
:= Errors
.Table
(E
).Next
;
2002 (Errors
.Table
(E
).Line
, Errors
.Table
(E
).Sfile
, True);
2003 Output_Error_Msgs
(E
);
2007 -- If output to file, write extra copy of error summary to the
2008 -- output file, and then close it.
2010 if Full_List_File_Name
/= null then
2011 Write_Error_Summary
;
2013 Close_List_File_Access
.all;
2014 Cancel_Special_Output
;
2018 -- Verbose mode (error lines only with error flags). Normally this is
2019 -- ignored in full list mode, unless we are listing to a file, in which
2020 -- case we still generate -gnatv output to standard output.
2023 and then (not Full_List
or else Full_List_File_Name
/= null)
2027 -- Output the header only when Main_Source_File is known
2029 if Main_Source_File
/= No_Source_File
then
2030 Write_Header
(Main_Source_File
);
2033 E
:= First_Error_Msg
;
2035 -- Loop through error lines
2037 while E
/= No_Error_Msg
loop
2038 if Errors
.Table
(E
).Deleted
then
2039 E
:= Errors
.Table
(E
).Next
;
2043 (Errors
.Table
(E
).Line
, Errors
.Table
(E
).Sfile
, True);
2044 Output_Error_Msgs
(E
);
2049 -- Output error summary if verbose or full list mode
2051 if Verbose_Mode
or else Full_List
then
2052 Write_Error_Summary
;
2057 if Warning_Mode
= Treat_As_Error
then
2058 Total_Errors_Detected
:=
2059 Total_Errors_Detected
+ Warnings_Detected
- Info_Messages
;
2060 Warnings_Detected
:= Info_Messages
;
2062 end Output_Messages
;
2064 ------------------------
2065 -- Output_Source_Line --
2066 ------------------------
2068 procedure Output_Source_Line
2069 (L
: Physical_Line_Number
;
2070 Sfile
: Source_File_Index
;
2076 Line_Number_Output
: Boolean := False;
2077 -- Set True once line number is output
2079 Empty_Line
: Boolean := True;
2080 -- Set False if line includes at least one character
2083 if Sfile
/= Current_Error_Source_File
then
2084 Write_Str
("==============Error messages for ");
2086 case Sinput
.File_Type
(Sfile
) is
2088 Write_Str
("source");
2090 when Sinput
.Config
=>
2091 Write_Str
("configuration pragmas");
2094 Write_Str
("symbol definition");
2096 when Sinput
.Preproc
=>
2097 Write_Str
("preprocessing data");
2100 Write_Str
(" file: ");
2101 Write_Name
(Full_File_Name
(Sfile
));
2104 if Num_SRef_Pragmas
(Sfile
) > 0 then
2105 Write_Str
("--------------Line numbers from file: ");
2106 Write_Name
(Full_Ref_Name
(Sfile
));
2107 Write_Str
(" (starting at line ");
2108 Write_Int
(Int
(First_Mapped_Line
(Sfile
)));
2113 Current_Error_Source_File
:= Sfile
;
2116 if Errs
or List_Pragmas_Mode
then
2117 Output_Line_Number
(Physical_To_Logical
(L
, Sfile
));
2118 Line_Number_Output
:= True;
2121 S
:= Line_Start
(L
, Sfile
);
2124 C
:= Source_Text
(Sfile
) (S
);
2125 exit when C
= ASCII
.LF
or else C
= ASCII
.CR
or else C
= EOF
;
2127 -- Deal with matching entry in List_Pragmas table
2130 and then List_Pragmas_Index
<= List_Pragmas
.Last
2131 and then S
= List_Pragmas
.Table
(List_Pragmas_Index
).Ploc
2133 case List_Pragmas
.Table
(List_Pragmas_Index
).Ptyp
is
2137 -- Ignore if on line with errors so that error flags
2138 -- get properly listed with the error line .
2141 Write_Char
(ASCII
.FF
);
2145 List_Pragmas_Mode
:= True;
2147 if not Line_Number_Output
then
2148 Output_Line_Number
(Physical_To_Logical
(L
, Sfile
));
2149 Line_Number_Output
:= True;
2156 List_Pragmas_Mode
:= False;
2159 List_Pragmas_Index
:= List_Pragmas_Index
+ 1;
2161 -- Normal case (no matching entry in List_Pragmas table)
2164 if Errs
or List_Pragmas_Mode
then
2169 Empty_Line
:= False;
2173 -- If we have output a source line, then add the line terminator, with
2174 -- training spaces preserved (so we output the line exactly as input).
2176 if Line_Number_Output
then
2180 Write_Eol_Keep_Blanks
;
2183 end Output_Source_Line
;
2185 -----------------------------
2186 -- Remove_Warning_Messages --
2187 -----------------------------
2189 procedure Remove_Warning_Messages
(N
: Node_Id
) is
2191 function Check_For_Warning
(N
: Node_Id
) return Traverse_Result
;
2192 -- This function checks one node for a possible warning message
2194 function Check_All_Warnings
is new Traverse_Func
(Check_For_Warning
);
2195 -- This defines the traversal operation
2197 -----------------------
2198 -- Check_For_Warning --
2199 -----------------------
2201 function Check_For_Warning
(N
: Node_Id
) return Traverse_Result
is
2202 Loc
: constant Source_Ptr
:= Sloc
(N
);
2205 function To_Be_Removed
(E
: Error_Msg_Id
) return Boolean;
2206 -- Returns True for a message that is to be removed. Also adjusts
2207 -- warning count appropriately.
2213 function To_Be_Removed
(E
: Error_Msg_Id
) return Boolean is
2215 if E
/= No_Error_Msg
2217 -- Don't remove if location does not match
2219 and then Errors
.Table
(E
).Optr
= Loc
2221 -- Don't remove if not warning/info message. Note that we do
2222 -- not remove style messages here. They are warning messages
2223 -- but not ones we want removed in this context.
2225 and then Errors
.Table
(E
).Warn
2227 -- Don't remove unconditional messages
2229 and then not Errors
.Table
(E
).Uncond
2231 Warnings_Detected
:= Warnings_Detected
- 1;
2233 if Errors
.Table
(E
).Info
then
2234 Info_Messages
:= Info_Messages
- 1;
2239 -- No removal required
2246 -- Start of processing for Check_For_Warnings
2249 while To_Be_Removed
(First_Error_Msg
) loop
2250 First_Error_Msg
:= Errors
.Table
(First_Error_Msg
).Next
;
2253 if First_Error_Msg
= No_Error_Msg
then
2254 Last_Error_Msg
:= No_Error_Msg
;
2257 E
:= First_Error_Msg
;
2258 while E
/= No_Error_Msg
loop
2259 while To_Be_Removed
(Errors
.Table
(E
).Next
) loop
2260 Errors
.Table
(E
).Next
:=
2261 Errors
.Table
(Errors
.Table
(E
).Next
).Next
;
2263 if Errors
.Table
(E
).Next
= No_Error_Msg
then
2264 Last_Error_Msg
:= E
;
2268 E
:= Errors
.Table
(E
).Next
;
2271 if Nkind
(N
) = N_Raise_Constraint_Error
2272 and then Original_Node
(N
) /= N
2273 and then No
(Condition
(N
))
2275 -- Warnings may have been posted on subexpressions of the original
2276 -- tree. We place the original node back on the tree to remove
2277 -- those warnings, whose sloc do not match those of any node in
2278 -- the current tree. Given that we are in unreachable code, this
2279 -- modification to the tree is harmless.
2282 Status
: Traverse_Final_Result
;
2285 if Is_List_Member
(N
) then
2286 Set_Condition
(N
, Original_Node
(N
));
2287 Status
:= Check_All_Warnings
(Condition
(N
));
2289 Rewrite
(N
, Original_Node
(N
));
2290 Status
:= Check_All_Warnings
(N
);
2299 end Check_For_Warning
;
2301 -- Start of processing for Remove_Warning_Messages
2304 if Warnings_Detected
/= 0 then
2306 Discard
: Traverse_Final_Result
;
2307 pragma Warnings
(Off
, Discard
);
2310 Discard
:= Check_All_Warnings
(N
);
2313 end Remove_Warning_Messages
;
2315 procedure Remove_Warning_Messages
(L
: List_Id
) is
2318 if Is_Non_Empty_List
(L
) then
2320 while Present
(Stat
) loop
2321 Remove_Warning_Messages
(Stat
);
2325 end Remove_Warning_Messages
;
2327 ----------------------
2328 -- Adjust_Name_Case --
2329 ----------------------
2331 procedure Adjust_Name_Case
(Loc
: Source_Ptr
) is
2333 -- We have an all lower case name from Namet, and now we want to set
2334 -- the appropriate case. If possible we copy the actual casing from
2335 -- the source. If not we use standard identifier casing.
2338 Src_Ind
: constant Source_File_Index
:= Get_Source_File_Index
(Loc
);
2339 Sbuffer
: Source_Buffer_Ptr
;
2341 Src_Ptr
: Source_Ptr
;
2347 -- For standard locations, always use mixed case
2349 if Loc
<= No_Location
then
2350 Set_Casing
(Mixed_Case
);
2353 -- Determine if the reference we are dealing with corresponds to
2354 -- text at the point of the error reference. This will often be
2355 -- the case for simple identifier references, and is the case
2356 -- where we can copy the casing from the source.
2358 Sbuffer
:= Source_Text
(Src_Ind
);
2360 while Ref_Ptr
<= Name_Len
loop
2362 Fold_Lower
(Sbuffer
(Src_Ptr
)) /=
2363 Fold_Lower
(Name_Buffer
(Ref_Ptr
));
2364 Ref_Ptr
:= Ref_Ptr
+ 1;
2365 Src_Ptr
:= Src_Ptr
+ 1;
2368 -- If we get through the loop without a mismatch, then output the
2369 -- name the way it is cased in the source program
2371 if Ref_Ptr
> Name_Len
then
2374 for J
in 1 .. Name_Len
loop
2375 Name_Buffer
(J
) := Sbuffer
(Src_Ptr
);
2376 Src_Ptr
:= Src_Ptr
+ 1;
2379 -- Otherwise set the casing using the default identifier casing
2382 Set_Casing
(Identifier_Casing
(Src_Ind
), Mixed_Case
);
2386 end Adjust_Name_Case
;
2388 ---------------------------
2389 -- Set_Identifier_Casing --
2390 ---------------------------
2392 procedure Set_Identifier_Casing
2393 (Identifier_Name
: System
.Address
;
2394 File_Name
: System
.Address
)
2396 Ident
: constant Big_String_Ptr
:= To_Big_String_Ptr
(Identifier_Name
);
2397 File
: constant Big_String_Ptr
:= To_Big_String_Ptr
(File_Name
);
2400 Desired_Case
: Casing_Type
:= Mixed_Case
;
2401 -- Casing required for result. Default value of Mixed_Case is used if
2402 -- for some reason we cannot find the right file name in the table.
2405 -- Get length of file name
2408 while File
(Flen
+ 1) /= ASCII
.NUL
loop
2412 -- Loop through file names to find matching one. This is a bit slow, but
2413 -- we only do it in error situations so it is not so terrible. Note that
2414 -- if the loop does not exit, then the desired case will be left set to
2415 -- Mixed_Case, this can happen if the name was not in canonical form.
2417 for J
in 1 .. Last_Source_File
loop
2418 Get_Name_String
(Full_Debug_Name
(J
));
2421 and then Name_Buffer
(1 .. Name_Len
) = String (File
(1 .. Flen
))
2423 Desired_Case
:= Identifier_Casing
(J
);
2428 -- Copy identifier as given to Name_Buffer
2430 for J
in Name_Buffer
'Range loop
2431 Name_Buffer
(J
) := Ident
(J
);
2433 if Name_Buffer
(J
) = ASCII
.NUL
then
2439 Set_Casing
(Desired_Case
);
2440 end Set_Identifier_Casing
;
2442 -----------------------
2443 -- Set_Ignore_Errors --
2444 -----------------------
2446 procedure Set_Ignore_Errors
(To
: Boolean) is
2448 Errors_Must_Be_Ignored
:= To
;
2449 end Set_Ignore_Errors
;
2451 ------------------------------
2452 -- Set_Msg_Insertion_Column --
2453 ------------------------------
2455 procedure Set_Msg_Insertion_Column
is
2457 if RM_Column_Check
then
2458 Set_Msg_Str
(" in column ");
2459 Set_Msg_Int
(Int
(Error_Msg_Col
) + 1);
2461 end Set_Msg_Insertion_Column
;
2463 ----------------------------
2464 -- Set_Msg_Insertion_Node --
2465 ----------------------------
2467 procedure Set_Msg_Insertion_Node
is
2472 Error_Msg_Node_1
= Error
2473 or else Error_Msg_Node_1
= Any_Type
;
2475 if Error_Msg_Node_1
= Empty
then
2476 Set_Msg_Blank_Conditional
;
2477 Set_Msg_Str
("<empty>");
2479 elsif Error_Msg_Node_1
= Error
then
2481 Set_Msg_Str
("<error>");
2483 elsif Error_Msg_Node_1
= Standard_Void_Type
then
2485 Set_Msg_Str
("procedure name");
2487 elsif Nkind
(Error_Msg_Node_1
) in N_Entity
2488 and then Ekind
(Error_Msg_Node_1
) = E_Anonymous_Access_Subprogram_Type
2491 Set_Msg_Str
("access to subprogram");
2494 Set_Msg_Blank_Conditional
;
2498 K
:= Nkind
(Error_Msg_Node_1
);
2500 -- If we have operator case, skip quotes since name of operator
2501 -- itself will supply the required quotations. An operator can be an
2502 -- applied use in an expression or an explicit operator symbol, or an
2503 -- identifier whose name indicates it is an operator.
2506 or else K
= N_Operator_Symbol
2507 or else K
= N_Defining_Operator_Symbol
2508 or else ((K
= N_Identifier
or else K
= N_Defining_Identifier
)
2509 and then Is_Operator_Name
(Chars
(Error_Msg_Node_1
)))
2511 Set_Msg_Node
(Error_Msg_Node_1
);
2513 -- Normal case, not an operator, surround with quotes
2517 Set_Qualification
(Error_Msg_Qual_Level
, Error_Msg_Node_1
);
2518 Set_Msg_Node
(Error_Msg_Node_1
);
2523 -- The following assignment ensures that a second ampersand insertion
2524 -- character will correspond to the Error_Msg_Node_2 parameter. We
2525 -- suppress possible validity checks in case operating in -gnatVa mode,
2526 -- and Error_Msg_Node_2 is not needed and has not been set.
2529 pragma Suppress
(Range_Check
);
2531 Error_Msg_Node_1
:= Error_Msg_Node_2
;
2533 end Set_Msg_Insertion_Node
;
2535 --------------------------------------
2536 -- Set_Msg_Insertion_Type_Reference --
2537 --------------------------------------
2539 procedure Set_Msg_Insertion_Type_Reference
(Flag
: Source_Ptr
) is
2545 if Error_Msg_Node_1
= Standard_Void_Type
then
2546 Set_Msg_Str
("package or procedure name");
2549 elsif Error_Msg_Node_1
= Standard_Exception_Type
then
2550 Set_Msg_Str
("exception name");
2553 elsif Error_Msg_Node_1
= Any_Access
2554 or else Error_Msg_Node_1
= Any_Array
2555 or else Error_Msg_Node_1
= Any_Boolean
2556 or else Error_Msg_Node_1
= Any_Character
2557 or else Error_Msg_Node_1
= Any_Composite
2558 or else Error_Msg_Node_1
= Any_Discrete
2559 or else Error_Msg_Node_1
= Any_Fixed
2560 or else Error_Msg_Node_1
= Any_Integer
2561 or else Error_Msg_Node_1
= Any_Modular
2562 or else Error_Msg_Node_1
= Any_Numeric
2563 or else Error_Msg_Node_1
= Any_Real
2564 or else Error_Msg_Node_1
= Any_Scalar
2565 or else Error_Msg_Node_1
= Any_String
2567 Get_Unqualified_Decoded_Name_String
(Chars
(Error_Msg_Node_1
));
2568 Set_Msg_Name_Buffer
;
2571 elsif Error_Msg_Node_1
= Universal_Real
then
2572 Set_Msg_Str
("type universal real");
2575 elsif Error_Msg_Node_1
= Universal_Integer
then
2576 Set_Msg_Str
("type universal integer");
2579 elsif Error_Msg_Node_1
= Universal_Fixed
then
2580 Set_Msg_Str
("type universal fixed");
2584 -- Special case of anonymous array
2586 if Nkind
(Error_Msg_Node_1
) in N_Entity
2587 and then Is_Array_Type
(Error_Msg_Node_1
)
2588 and then Present
(Related_Array_Object
(Error_Msg_Node_1
))
2590 Set_Msg_Str
("type of ");
2591 Set_Msg_Node
(Related_Array_Object
(Error_Msg_Node_1
));
2592 Set_Msg_Str
(" declared");
2593 Set_Msg_Insertion_Line_Number
2594 (Sloc
(Related_Array_Object
(Error_Msg_Node_1
)), Flag
);
2598 -- If we fall through, it is not a special case, so first output
2599 -- the name of the type, preceded by private for a private type
2601 if Is_Private_Type
(Error_Msg_Node_1
) then
2602 Set_Msg_Str
("private type ");
2604 Set_Msg_Str
("type ");
2607 Ent
:= Error_Msg_Node_1
;
2609 if Is_Internal_Name
(Chars
(Ent
)) then
2610 Unwind_Internal_Type
(Ent
);
2613 -- Types in Standard are displayed as "Standard.name"
2615 if Sloc
(Ent
) <= Standard_Location
then
2617 Set_Msg_Str
("Standard.");
2622 -- Types in other language defined units are displayed as
2623 -- "package-name.type-name"
2626 Is_Predefined_File_Name
(Unit_File_Name
(Get_Source_Unit
(Ent
)))
2628 Get_Unqualified_Decoded_Name_String
2629 (Unit_Name
(Get_Source_Unit
(Ent
)));
2630 Name_Len
:= Name_Len
- 2;
2631 Set_Msg_Blank_Conditional
;
2633 Set_Casing
(Mixed_Case
);
2634 Set_Msg_Name_Buffer
;
2636 Set_Casing
(Mixed_Case
);
2641 -- All other types display as "type name" defined at line xxx
2642 -- possibly qualified if qualification is requested.
2646 Set_Qualification
(Error_Msg_Qual_Level
, Ent
);
2650 -- If we did not print a name (e.g. in the case of an anonymous
2651 -- subprogram type), there is no name to print, so remove quotes.
2653 if Buffer_Ends_With
('"') then
2654 Buffer_Remove
('"');
2660 -- If the original type did not come from a predefined file, add the
2661 -- location where the type was defined.
2663 if Sloc
(Error_Msg_Node_1
) > Standard_Location
2665 not Is_Predefined_File_Name
2666 (Unit_File_Name
(Get_Source_Unit
(Error_Msg_Node_1
)))
2668 Set_Msg_Str
(" defined");
2669 Set_Msg_Insertion_Line_Number
(Sloc
(Error_Msg_Node_1
), Flag
);
2671 -- If it did come from a predefined file, deal with the case where
2672 -- this was a file with a generic instantiation from elsewhere.
2675 if Sloc
(Error_Msg_Node_1
) > Standard_Location
then
2677 Iloc
: constant Source_Ptr
:=
2678 Instantiation_Location
(Sloc
(Error_Msg_Node_1
));
2681 if Iloc
/= No_Location
2682 and then not Suppress_Instance_Location
2684 Set_Msg_Str
(" from instance");
2685 Set_Msg_Insertion_Line_Number
(Iloc
, Flag
);
2690 end Set_Msg_Insertion_Type_Reference
;
2692 ---------------------------------
2693 -- Set_Msg_Insertion_Unit_Name --
2694 ---------------------------------
2696 procedure Set_Msg_Insertion_Unit_Name
(Suffix
: Boolean := True) is
2698 if Error_Msg_Unit_1
= No_Unit_Name
then
2701 elsif Error_Msg_Unit_1
= Error_Unit_Name
then
2703 Set_Msg_Str
("<error>");
2706 Get_Unit_Name_String
(Error_Msg_Unit_1
, Suffix
);
2709 Set_Msg_Name_Buffer
;
2713 -- The following assignment ensures that a second percent insertion
2714 -- character will correspond to the Error_Msg_Unit_2 parameter. We
2715 -- suppress possible validity checks in case operating in -gnatVa mode,
2716 -- and Error_Msg_Unit_2 is not needed and has not been set.
2719 pragma Suppress
(Range_Check
);
2721 Error_Msg_Unit_1
:= Error_Msg_Unit_2
;
2723 end Set_Msg_Insertion_Unit_Name
;
2729 procedure Set_Msg_Node
(Node
: Node_Id
) is
2735 case Nkind
(Node
) is
2736 when N_Designator
=>
2737 Set_Msg_Node
(Name
(Node
));
2739 Set_Msg_Node
(Identifier
(Node
));
2742 when N_Defining_Program_Unit_Name
=>
2743 Set_Msg_Node
(Name
(Node
));
2745 Set_Msg_Node
(Defining_Identifier
(Node
));
2748 when N_Selected_Component | N_Expanded_Name
=>
2749 Set_Msg_Node
(Prefix
(Node
));
2751 Set_Msg_Node
(Selector_Name
(Node
));
2758 -- The only remaining possibilities are identifiers, defining
2759 -- identifiers, pragmas, and pragma argument associations.
2761 if Nkind
(Node
) = N_Pragma
then
2762 Nam
:= Pragma_Name
(Node
);
2765 -- The other cases have Chars fields, and we want to test for possible
2766 -- internal names, which generally represent something gone wrong. An
2767 -- exception is the case of internal type names, where we try to find a
2768 -- reasonable external representation for the external name
2770 elsif Is_Internal_Name
(Chars
(Node
))
2772 ((Is_Entity_Name
(Node
)
2773 and then Present
(Entity
(Node
))
2774 and then Is_Type
(Entity
(Node
)))
2776 (Nkind
(Node
) = N_Defining_Identifier
and then Is_Type
(Node
)))
2778 if Nkind
(Node
) = N_Identifier
then
2779 Ent
:= Entity
(Node
);
2786 -- If the type is the designated type of an access_to_subprogram,
2787 -- then there is no name to provide in the call.
2789 if Ekind
(Ent
) = E_Subprogram_Type
then
2792 -- Otherwise, we will be able to find some kind of name to output
2795 Unwind_Internal_Type
(Ent
);
2799 -- If not internal name, just use name in Chars field
2802 Nam
:= Chars
(Node
);
2806 -- At this stage, the name to output is in Nam
2808 Get_Unqualified_Decoded_Name_String
(Nam
);
2810 -- Remove trailing upper case letters from the name (useful for
2811 -- dealing with some cases of internal names).
2813 while Name_Len
> 1 and then Name_Buffer
(Name_Len
) in 'A' .. 'Z' loop
2814 Name_Len
:= Name_Len
- 1;
2817 -- If we have any of the names from standard that start with the
2818 -- characters "any " (e.g. Any_Type), then kill the message since
2819 -- almost certainly it is a junk cascaded message.
2822 and then Name_Buffer
(1 .. 4) = "any "
2824 Kill_Message
:= True;
2827 -- Remaining step is to adjust casing and possibly add 'Class
2829 Adjust_Name_Case
(Loc
);
2830 Set_Msg_Name_Buffer
;
2838 procedure Set_Msg_Text
(Text
: String; Flag
: Source_Ptr
) is
2839 C
: Character; -- Current character
2840 P
: Natural; -- Current index;
2842 procedure Skip_Msg_Insertion_Warning
(C
: Character);
2843 -- Deal with ? ?? ?x? ?X? ?*? ?$? insertion sequences (and the same
2844 -- sequences using < instead of ?). The caller has already bumped
2845 -- the pointer past the initial ? or < and C is set to this initial
2846 -- character (? or <). This procedure skips past the rest of the
2847 -- sequence. We do not need to set Msg_Insertion_Char, since this
2848 -- was already done during the message prescan.
2850 --------------------------------
2851 -- Skip_Msg_Insertion_Warning --
2852 --------------------------------
2854 procedure Skip_Msg_Insertion_Warning
(C
: Character) is
2856 if P
<= Text
'Last and then Text
(P
) = C
then
2859 elsif P
+ 1 <= Text
'Last
2860 and then (Text
(P
) in 'a' .. 'z'
2862 Text
(P
) in 'A' .. 'Z'
2867 and then Text
(P
+ 1) = C
2871 end Skip_Msg_Insertion_Warning
;
2873 -- Start of processing for Set_Msg_Text
2876 Manual_Quote_Mode
:= False;
2878 Flag_Source
:= Get_Source_File_Index
(Flag
);
2880 -- Skip info: at start, we have recorded this in Is_Info_Msg, and this
2881 -- will be used (Info field in error message object) to put back the
2882 -- string when it is printed. We need to do this, or we get confused
2883 -- with instantiation continuations.
2886 and then Text
(Text
'First .. Text
'First + 5) = "info: "
2888 P
:= Text
'First + 6;
2893 -- Loop through characters of message
2895 while P
<= Text
'Last loop
2899 -- Check for insertion character or sequence
2903 if P
<= Text
'Last and then Text
(P
) = '%' then
2905 Set_Msg_Insertion_Name_Literal
;
2907 Set_Msg_Insertion_Name
;
2911 if P
<= Text
'Last and then Text
(P
) = '$' then
2913 Set_Msg_Insertion_Unit_Name
(Suffix
=> False);
2915 Set_Msg_Insertion_Unit_Name
;
2919 Set_Msg_Insertion_File_Name
;
2922 Set_Msg_Insertion_Type_Reference
(Flag
);
2925 Set_Msg_Insertion_Reserved_Name
;
2928 Set_Msg_Insertion_Node
;
2931 Set_Msg_Insertion_Line_Number
(Error_Msg_Sloc
, Flag
);
2934 Continuation
:= True;
2936 if Text
(P
) = '\' then
2937 Continuation_New_Line
:= True;
2942 Set_Msg_Insertion_Column
;
2945 Set_Msg_Insertion_Run_Time_Name
;
2948 Set_Msg_Insertion_Uint
;
2951 Manual_Quote_Mode
:= not Manual_Quote_Mode
;
2955 null; -- already dealt with
2958 Skip_Msg_Insertion_Warning
('?');
2961 Skip_Msg_Insertion_Warning
('<');
2964 null; -- already dealt with
2967 Set_Msg_Char
(Text
(P
));
2971 Set_Msg_Str
(Error_Msg_String
(1 .. Error_Msg_Strlen
));
2973 -- Upper case letter
2977 -- Start of reserved word if two or more
2979 if P
<= Text
'Last and then Text
(P
) in 'A' .. 'Z' then
2981 Set_Msg_Insertion_Reserved_Word
(Text
, P
);
2983 -- Single upper case letter is just inserted
2989 -- '[' (will be/would have been raised at run time)
2992 if Is_Warning_Msg
then
2993 Set_Msg_Str
("will be raised at run time");
2995 Set_Msg_Str
("would have been raised at run time");
2998 -- ']' (may be/might have been raised at run time)
3001 if Is_Warning_Msg
then
3002 Set_Msg_Str
("may be raised at run time");
3004 Set_Msg_Str
("might have been raised at run time");
3007 -- Normal character with no special treatment
3019 procedure Set_Posted
(N
: Node_Id
) is
3023 if Is_Serious_Error
then
3025 -- We always set Error_Posted on the node itself
3027 Set_Error_Posted
(N
);
3029 -- If it is a subexpression, then set Error_Posted on parents up to
3030 -- and including the first non-subexpression construct. This helps
3031 -- avoid cascaded error messages within a single expression.
3037 Set_Error_Posted
(P
);
3038 exit when Nkind
(P
) not in N_Subexpr
;
3041 if Nkind_In
(P
, N_Pragma_Argument_Association
,
3042 N_Component_Association
,
3043 N_Discriminant_Association
,
3044 N_Generic_Association
,
3045 N_Parameter_Association
)
3047 Set_Error_Posted
(Parent
(P
));
3050 -- A special check, if we just posted an error on an attribute
3051 -- definition clause, then also set the entity involved as posted.
3052 -- For example, this stops complaining about the alignment after
3053 -- complaining about the size, which is likely to be useless.
3055 if Nkind
(P
) = N_Attribute_Definition_Clause
then
3056 if Is_Entity_Name
(Name
(P
)) then
3057 Set_Error_Posted
(Entity
(Name
(P
)));
3063 -----------------------
3064 -- Set_Qualification --
3065 -----------------------
3067 procedure Set_Qualification
(N
: Nat
; E
: Entity_Id
) is
3069 if N
/= 0 and then Scope
(E
) /= Standard_Standard
then
3070 Set_Qualification
(N
- 1, Scope
(E
));
3071 Set_Msg_Node
(Scope
(E
));
3074 end Set_Qualification
;
3076 ------------------------
3077 -- Special_Msg_Delete --
3078 ------------------------
3080 -- Is it really right to have all this specialized knowledge in errout?
3082 function Special_Msg_Delete
3084 N
: Node_Or_Entity_Id
;
3085 E
: Node_Or_Entity_Id
) return Boolean
3088 -- Never delete messages in -gnatdO mode
3090 if Debug_Flag_OO
then
3093 -- Processing for "atomic access cannot be guaranteed"
3095 elsif Msg
= "atomic access to & cannot be guaranteed" then
3097 -- When an atomic object refers to a non-atomic type in the same
3098 -- scope, we implicitly make the type atomic. In the non-error case
3099 -- this is surely safe (and in fact prevents an error from occurring
3100 -- if the type is not atomic by default). But if the object cannot be
3101 -- made atomic, then we introduce an extra junk message by this
3102 -- manipulation, which we get rid of here.
3104 -- We identify this case by the fact that it references a type for
3105 -- which Is_Atomic is set, but there is no Atomic pragma setting it.
3108 and then Is_Atomic
(E
)
3109 and then No
(Get_Rep_Pragma
(E
, Name_Atomic
))
3114 -- Processing for "Size too small" messages
3116 elsif Msg
= "size for& too small, minimum allowed is ^" then
3118 -- Suppress "size too small" errors in CodePeer mode, since code may
3119 -- be analyzed in a different configuration than the one used for
3120 -- compilation. Even when the configurations match, this message
3121 -- may be issued on correct code, because pragma Pack is ignored
3122 -- in CodePeer mode.
3124 if CodePeer_Mode
then
3127 -- When a size is wrong for a frozen type there is no explicit size
3128 -- clause, and other errors have occurred, suppress the message,
3129 -- since it is likely that this size error is a cascaded result of
3130 -- other errors. The reason we eliminate unfrozen types is that
3131 -- messages issued before the freeze type are for sure OK.
3134 and then Serious_Errors_Detected
> 0
3135 and then Nkind
(N
) /= N_Component_Clause
3136 and then Nkind
(Parent
(N
)) /= N_Component_Clause
3138 No
(Get_Attribute_Definition_Clause
(E
, Attribute_Size
))
3140 No
(Get_Attribute_Definition_Clause
(E
, Attribute_Object_Size
))
3142 No
(Get_Attribute_Definition_Clause
(E
, Attribute_Value_Size
))
3148 -- All special tests complete, so go ahead with message
3151 end Special_Msg_Delete
;
3157 procedure SPARK_Msg_N
(Msg
: String; N
: Node_Or_Entity_Id
) is
3159 if SPARK_Mode
/= Off
then
3160 Error_Msg_N
(Msg
, N
);
3168 procedure SPARK_Msg_NE
3170 N
: Node_Or_Entity_Id
;
3171 E
: Node_Or_Entity_Id
)
3174 if SPARK_Mode
/= Off
then
3175 Error_Msg_NE
(Msg
, N
, E
);
3179 --------------------------
3180 -- Unwind_Internal_Type --
3181 --------------------------
3183 procedure Unwind_Internal_Type
(Ent
: in out Entity_Id
) is
3184 Derived
: Boolean := False;
3186 Old_Ent
: Entity_Id
;
3189 -- Undo placement of a quote, since we will put it back later
3191 Mchar
:= Msg_Buffer
(Msglen
);
3194 Msglen
:= Msglen
- 1;
3197 -- The loop here deals with recursive types, we are trying to find a
3198 -- related entity that is not an implicit type. Note that the check with
3199 -- Old_Ent stops us from getting "stuck". Also, we don't output the
3200 -- "type derived from" message more than once in the case where we climb
3201 -- up multiple levels.
3206 -- Implicit access type, use directly designated type In Ada 2005,
3207 -- the designated type may be an anonymous access to subprogram, in
3208 -- which case we can only point to its definition.
3210 if Is_Access_Type
(Ent
) then
3211 if Ekind
(Ent
) = E_Access_Subprogram_Type
3212 or else Ekind
(Ent
) = E_Anonymous_Access_Subprogram_Type
3213 or else Is_Access_Protected_Subprogram_Type
(Ent
)
3215 Ent
:= Directly_Designated_Type
(Ent
);
3217 if not Comes_From_Source
(Ent
) then
3218 if Buffer_Ends_With
("type ") then
3219 Buffer_Remove
("type ");
3223 if Ekind
(Ent
) = E_Function
then
3224 Set_Msg_Str
("access to function ");
3225 elsif Ekind
(Ent
) = E_Procedure
then
3226 Set_Msg_Str
("access to procedure ");
3228 Set_Msg_Str
("access to subprogram");
3233 -- Type is access to object, named or anonymous
3236 Set_Msg_Str
("access to ");
3237 Ent
:= Directly_Designated_Type
(Ent
);
3242 elsif Is_Class_Wide_Type
(Ent
) then
3244 Ent
:= Root_Type
(Ent
);
3246 -- Use base type if this is a subtype
3248 elsif Ent
/= Base_Type
(Ent
) then
3249 Buffer_Remove
("type ");
3251 -- Avoid duplication "subtype of subtype of", and also replace
3252 -- "derived from subtype of" simply by "derived from"
3254 if not Buffer_Ends_With
("subtype of ")
3255 and then not Buffer_Ends_With
("derived from ")
3257 Set_Msg_Str
("subtype of ");
3260 Ent
:= Base_Type
(Ent
);
3262 -- If this is a base type with a first named subtype, use the first
3263 -- named subtype instead. This is not quite accurate in all cases,
3264 -- but it makes too much noise to be accurate and add 'Base in all
3265 -- cases. Note that we only do this is the first named subtype is not
3266 -- itself an internal name. This avoids the obvious loop (subtype ->
3267 -- basetype -> subtype) which would otherwise occur).
3271 FST
: constant Entity_Id
:= First_Subtype
(Ent
);
3274 if not Is_Internal_Name
(Chars
(FST
)) then
3278 -- Otherwise use root type
3282 Buffer_Remove
("type ");
3284 -- Test for "subtype of type derived from" which seems
3285 -- excessive and is replaced by "type derived from".
3287 Buffer_Remove
("subtype of");
3289 -- Avoid duplicated "type derived from type derived from"
3291 if not Buffer_Ends_With
("type derived from ") then
3292 Set_Msg_Str
("type derived from ");
3303 -- If we are stuck in a loop, get out and settle for the internal
3304 -- name after all. In this case we set to kill the message if it is
3305 -- not the first error message (we really try hard not to show the
3306 -- dirty laundry of the implementation to the poor user).
3308 if Ent
= Old_Ent
then
3309 Kill_Message
:= True;
3313 -- Get out if we finally found a non-internal name to use
3315 exit Find
when not Is_Internal_Name
(Chars
(Ent
));
3321 end Unwind_Internal_Type
;
3323 --------------------
3324 -- Warn_Insertion --
3325 --------------------
3327 function Warn_Insertion
return String is
3329 case Warning_Msg_Char
is
3332 when 'a' .. 'z' |
'A' .. 'Z' |
'*' |
'$' =>
3333 return '?' & Warning_Msg_Char
& '?';
3337 raise Program_Error
;