1 ------------------------------------------------------------------------------
3 -- GNAT COMPILER COMPONENTS --
9 -- Copyright (C) 1992-2013, 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
;
40 with Hostparm
; use Hostparm
;
43 with Nlists
; use Nlists
;
44 with Output
; use Output
;
45 with Scans
; use Scans
;
46 with Sem_Aux
; use Sem_Aux
;
47 with Sinput
; use Sinput
;
48 with Sinfo
; use Sinfo
;
49 with Snames
; use Snames
;
50 with Stand
; use Stand
;
51 with Stylesw
; use Stylesw
;
52 with Uname
; use Uname
;
54 package body Errout
is
56 Errors_Must_Be_Ignored
: Boolean := False;
57 -- Set to True by procedure Set_Ignore_Errors (True), when calls to error
58 -- message procedures should be ignored (when parsing irrelevant text in
59 -- sources being preprocessed).
61 Finalize_Called
: Boolean := False;
62 -- Set True if the Finalize routine has been called
64 Warn_On_Instance
: Boolean;
65 -- Flag set true for warning message to be posted on instance
67 ------------------------------------
68 -- Table of Non-Instance Messages --
69 ------------------------------------
71 -- This table contains an entry for every error message processed by the
72 -- Error_Msg routine that is not posted on generic (or inlined) instance.
73 -- As explained in further detail in the Error_Msg procedure body, this
74 -- table is used to avoid posting redundant messages on instances.
76 type NIM_Record
is record
80 -- Type used to store text and location of one message
82 package Non_Instance_Msgs
is new Table
.Table
(
83 Table_Component_Type
=> NIM_Record
,
84 Table_Index_Type
=> Int
,
87 Table_Increment
=> 100,
88 Table_Name
=> "Non_Instance_Msgs");
90 -----------------------
91 -- Local Subprograms --
92 -----------------------
94 procedure Error_Msg_Internal
99 -- This is the low level routine used to post messages after dealing with
100 -- the issue of messages placed on instantiations (which get broken up
101 -- into separate calls in Error_Msg). Sptr is the location on which the
102 -- flag will be placed in the output. In the case where the flag is on
103 -- the template, this points directly to the template, not to one of the
104 -- instantiation copies of the template. Optr is the original location
105 -- used to flag the error, and this may indeed point to an instantiation
106 -- copy. So typically we can see Optr pointing to the template location
107 -- in an instantiation copy when Sptr points to the source location of
108 -- the actual instantiation (i.e the line with the new). Msg_Cont is
109 -- set true if this is a continuation message.
111 function No_Warnings
(N
: Node_Or_Entity_Id
) return Boolean;
112 -- Determines if warnings should be suppressed for the given node
114 function OK_Node
(N
: Node_Id
) return Boolean;
115 -- Determines if a node is an OK node to place an error message on (return
116 -- True) or if the error message should be suppressed (return False). A
117 -- message is suppressed if the node already has an error posted on it,
118 -- or if it refers to an Etype that has an error posted on it, or if
119 -- it references an Entity that has an error posted on it.
121 procedure Output_Source_Line
122 (L
: Physical_Line_Number
;
123 Sfile
: Source_File_Index
;
125 -- Outputs text of source line L, in file S, together with preceding line
126 -- number, as described above for Output_Line_Number. The Errs parameter
127 -- indicates if there are errors attached to the line, which forces
128 -- listing on, even in the presence of pragma List (Off).
130 procedure Set_Msg_Insertion_Column
;
131 -- Handle column number insertion (@ insertion character)
133 procedure Set_Msg_Insertion_Node
;
134 -- Handle node (name from node) insertion (& insertion character)
136 procedure Set_Msg_Insertion_Type_Reference
(Flag
: Source_Ptr
);
137 -- Handle type reference (right brace insertion character). Flag is the
138 -- location of the flag, which is provided for the internal call to
139 -- Set_Msg_Insertion_Line_Number,
141 procedure Set_Msg_Insertion_Unit_Name
(Suffix
: Boolean := True);
142 -- Handle unit name insertion ($ insertion character). Depending on Boolean
143 -- parameter Suffix, (spec) or (body) is appended after the unit name.
145 procedure Set_Msg_Node
(Node
: Node_Id
);
146 -- Add the sequence of characters for the name associated with the given
147 -- node to the current message. For N_Designator, N_Selected_Component,
148 -- N_Defining_Program_Unit_Name, and N_Expanded_Name, the Prefix is
151 procedure Set_Msg_Text
(Text
: String; Flag
: Source_Ptr
);
152 -- Add a sequence of characters to the current message. The characters may
153 -- be one of the special insertion characters (see documentation in spec).
154 -- Flag is the location at which the error is to be posted, which is used
155 -- to determine whether or not the # insertion needs a file name. The
156 -- variables Msg_Buffer, Msglen, Is_Style_Msg, Is_Warning_Msg, and
157 -- Is_Unconditional_Msg are set on return.
159 procedure Set_Posted
(N
: Node_Id
);
160 -- Sets the Error_Posted flag on the given node, and all its parents
161 -- that are subexpressions and then on the parent non-subexpression
162 -- construct that contains the original expression (this reduces the
163 -- number of cascaded messages). Note that this call only has an effect
164 -- for a serious error. For a non-serious error, it has no effect.
166 procedure Set_Qualification
(N
: Nat
; E
: Entity_Id
);
167 -- Outputs up to N levels of qualification for the given entity. For
168 -- example, the entity A.B.C.D will output B.C. if N = 2.
170 function Special_Msg_Delete
172 N
: Node_Or_Entity_Id
;
173 E
: Node_Or_Entity_Id
) return Boolean;
174 -- This function is called from Error_Msg_NEL, passing the message Msg,
175 -- node N on which the error is to be posted, and the entity or node E
176 -- to be used for an & insertion in the message if any. The job of this
177 -- procedure is to test for certain cascaded messages that we would like
178 -- to suppress. If the message is to be suppressed then we return True.
179 -- If the message should be generated (the normal case) False is returned.
181 procedure Unwind_Internal_Type
(Ent
: in out Entity_Id
);
182 -- This procedure is given an entity id for an internal type, i.e. a type
183 -- with an internal name. It unwinds the type to try to get to something
184 -- reasonably printable, generating prefixes like "subtype of", "access
185 -- to", etc along the way in the buffer. The value in Ent on return is the
186 -- final name to be printed. Hopefully this is not an internal name, but in
187 -- some internal name cases, it is an internal name, and has to be printed
188 -- anyway (although in this case the message has been killed if possible).
189 -- The global variable Class_Flag is set to True if the resulting entity
190 -- should have 'Class appended to its name (see Add_Class procedure), and
191 -- is otherwise unchanged.
193 procedure VMS_Convert
;
194 -- This procedure has no effect if called when the host is not OpenVMS. If
195 -- the host is indeed OpenVMS, then the error message stored in Msg_Buffer
196 -- is scanned for appearances of switch names which need converting to
197 -- corresponding VMS qualifier names. See Gnames/Vnames table in Errout
198 -- spec for precise definition of the conversion that is performed by this
199 -- routine in OpenVMS mode.
201 -----------------------
202 -- Change_Error_Text --
203 -----------------------
205 procedure Change_Error_Text
(Error_Id
: Error_Msg_Id
; New_Msg
: String) is
206 Save_Next
: Error_Msg_Id
;
207 Err_Id
: Error_Msg_Id
:= Error_Id
;
210 Set_Msg_Text
(New_Msg
, Errors
.Table
(Error_Id
).Sptr
);
211 Errors
.Table
(Error_Id
).Text
:= new String'(Msg_Buffer (1 .. Msglen));
213 -- If in immediate error message mode, output modified error message now
214 -- This is just a bit tricky, because we want to output just a single
215 -- message, and the messages we modified is already linked in. We solve
216 -- this by temporarily resetting its forward pointer to empty.
218 if Debug_Flag_OO then
219 Save_Next := Errors.Table (Error_Id).Next;
220 Errors.Table (Error_Id).Next := No_Error_Msg;
223 (Errors.Table (Error_Id).Line, Errors.Table (Error_Id).Sfile, True);
224 Output_Error_Msgs (Err_Id);
225 Errors.Table (Error_Id).Next := Save_Next;
227 end Change_Error_Text;
229 ------------------------
230 -- Compilation_Errors --
231 ------------------------
233 function Compilation_Errors return Boolean is
235 if not Finalize_Called then
238 return Erroutc.Compilation_Errors;
240 end Compilation_Errors;
246 -- Error_Msg posts a flag at the given location, except that if the
247 -- Flag_Location points within a generic template and corresponds to an
248 -- instantiation of this generic template, then the actual message will be
249 -- posted on the generic instantiation, along with additional messages
250 -- referencing the generic declaration.
252 procedure Error_Msg (Msg : String; Flag_Location : Source_Ptr) is
253 Sindex : Source_File_Index;
254 -- Source index for flag location
256 Orig_Loc : Source_Ptr;
257 -- Original location of Flag_Location (i.e. location in original
258 -- template in instantiation case, otherwise unchanged).
261 -- It is a fatal error to issue an error message when scanning from the
262 -- internal source buffer (see Sinput for further documentation)
264 pragma Assert (Sinput.Source /= Internal_Source_Ptr);
266 -- Return if all errors are to be ignored
268 if Errors_Must_Be_Ignored then
272 -- If we already have messages, and we are trying to place a message at
273 -- No_Location or in package Standard, then just ignore the attempt
274 -- since we assume that what is happening is some cascaded junk. Note
275 -- that this is safe in the sense that proceeding will surely bomb.
277 if Flag_Location < First_Source_Ptr
278 and then Total_Errors_Detected > 0
283 -- Start of processing for new message
285 Sindex := Get_Source_File_Index (Flag_Location);
286 Test_Style_Warning_Serious_Msg (Msg);
287 Orig_Loc := Original_Location (Flag_Location);
289 -- If the current location is in an instantiation, the issue arises of
290 -- whether to post the message on the template or the instantiation.
292 -- The way we decide is to see if we have posted the same message on
293 -- the template when we compiled the template (the template is always
294 -- compiled before any instantiations). For this purpose, we use a
295 -- separate table of messages. The reason we do this is twofold:
297 -- First, the messages can get changed by various processing
298 -- including the insertion of tokens etc, making it hard to
299 -- do the comparison.
301 -- Second, we will suppress a warning on a template if it is not in
302 -- the current extended source unit. That's reasonable and means we
303 -- don't want the warning on the instantiation here either, but it
304 -- does mean that the main error table would not in any case include
307 if Flag_Location = Orig_Loc then
308 Non_Instance_Msgs.Append ((new String'(Msg
), Flag_Location
));
309 Warn_On_Instance
:= False;
311 -- Here we have an instance message
314 -- Delete if debug flag off, and this message duplicates a message
315 -- already posted on the corresponding template
317 if not Debug_Flag_GG
then
318 for J
in Non_Instance_Msgs
.First
.. Non_Instance_Msgs
.Last
loop
319 if Msg
= Non_Instance_Msgs
.Table
(J
).Msg
.all
320 and then Non_Instance_Msgs
.Table
(J
).Loc
= Orig_Loc
327 -- No duplicate, so error/warning will be posted on instance
329 Warn_On_Instance
:= Is_Warning_Msg
;
332 -- Ignore warning message that is suppressed for this location. Note
333 -- that style checks are not considered warning messages for this
336 if Is_Warning_Msg
and then Warnings_Suppressed
(Orig_Loc
) then
339 -- For style messages, check too many messages so far
342 and then Maximum_Messages
/= 0
343 and then Warnings_Detected
>= Maximum_Messages
348 -- The idea at this stage is that we have two kinds of messages
350 -- First, we have those messages that are to be placed as requested at
351 -- Flag_Location. This includes messages that have nothing to do with
352 -- generics, and also messages placed on generic templates that reflect
353 -- an error in the template itself. For such messages we simply call
354 -- Error_Msg_Internal to place the message in the requested location.
356 if Instantiation
(Sindex
) = No_Location
then
357 Error_Msg_Internal
(Msg
, Flag_Location
, Flag_Location
, False);
361 -- If we are trying to flag an error in an instantiation, we may have
362 -- a generic contract violation. What we generate in this case is:
364 -- instantiation error at ...
365 -- original error message
369 -- warning: in instantiation at
370 -- warning: original warning message
372 -- All these messages are posted at the location of the top level
373 -- instantiation. If there are nested instantiations, then the
374 -- instantiation error message can be repeated, pointing to each
375 -- of the relevant instantiations.
377 -- Note: the instantiation mechanism is also shared for inlining of
378 -- subprogram bodies when front end inlining is done. In this case the
379 -- messages have the form:
381 -- in inlined body at ...
382 -- original error message
386 -- warning: in inlined body at
387 -- warning: original warning message
389 -- OK, here we have an instantiation error, and we need to generate the
390 -- error on the instantiation, rather than on the template.
393 Actual_Error_Loc
: Source_Ptr
;
394 -- Location of outer level instantiation in instantiation case, or
395 -- just a copy of Flag_Location in the normal case. This is the
396 -- location where all error messages will actually be posted.
398 Save_Error_Msg_Sloc
: constant Source_Ptr
:= Error_Msg_Sloc
;
399 -- Save possible location set for caller's message. We need to use
400 -- Error_Msg_Sloc for the location of the instantiation error but we
401 -- have to preserve a possible original value.
403 X
: Source_File_Index
;
405 Msg_Cont_Status
: Boolean;
406 -- Used to label continuation lines in instantiation case with
407 -- proper Msg_Cont status.
410 -- Loop to find highest level instantiation, where all error
411 -- messages will be placed.
415 Actual_Error_Loc
:= Instantiation
(X
);
416 X
:= Get_Source_File_Index
(Actual_Error_Loc
);
417 exit when Instantiation
(X
) = No_Location
;
420 -- Since we are generating the messages at the instantiation point in
421 -- any case, we do not want the references to the bad lines in the
422 -- instance to be annotated with the location of the instantiation.
424 Suppress_Instance_Location
:= True;
425 Msg_Cont_Status
:= False;
427 -- Loop to generate instantiation messages
429 Error_Msg_Sloc
:= Flag_Location
;
430 X
:= Get_Source_File_Index
(Flag_Location
);
431 while Instantiation
(X
) /= No_Location
loop
433 -- Suppress instantiation message on continuation lines
435 if Msg
(Msg
'First) /= '\' then
437 -- Case of inlined body
439 if Inlined_Body
(X
) then
440 if Is_Warning_Msg
or else Is_Style_Msg
then
442 ("?in inlined body #",
443 Actual_Error_Loc
, Flag_Location
, Msg_Cont_Status
);
446 ("error in inlined body #",
447 Actual_Error_Loc
, Flag_Location
, Msg_Cont_Status
);
450 -- Case of generic instantiation
453 if Is_Warning_Msg
or else Is_Style_Msg
then
455 ("?in instantiation #",
456 Actual_Error_Loc
, Flag_Location
, Msg_Cont_Status
);
459 ("instantiation error #",
460 Actual_Error_Loc
, Flag_Location
, Msg_Cont_Status
);
465 Error_Msg_Sloc
:= Instantiation
(X
);
466 X
:= Get_Source_File_Index
(Error_Msg_Sloc
);
467 Msg_Cont_Status
:= True;
470 Suppress_Instance_Location
:= False;
471 Error_Msg_Sloc
:= Save_Error_Msg_Sloc
;
473 -- Here we output the original message on the outer instantiation
476 (Msg
, Actual_Error_Loc
, Flag_Location
, Msg_Cont_Status
);
484 procedure Error_Msg_AP
(Msg
: String) is
489 -- If we had saved the Scan_Ptr value after scanning the previous
490 -- token, then we would have exactly the right place for putting
491 -- the flag immediately at hand. However, that would add at least
492 -- two instructions to a Scan call *just* to service the possibility
493 -- of an Error_Msg_AP call. So instead we reconstruct that value.
495 -- We have two possibilities, start with Prev_Token_Ptr and skip over
496 -- the current token, which is made harder by the possibility that this
497 -- token may be in error, or start with Token_Ptr and work backwards.
498 -- We used to take the second approach, but it's hard because of
499 -- comments, and harder still because things that look like comments
500 -- can appear inside strings. So now we take the first approach.
502 -- Note: in the case where there is no previous token, Prev_Token_Ptr
503 -- is set to Source_First, which is a reasonable position for the
504 -- error flag in this situation.
506 S1
:= Prev_Token_Ptr
;
509 -- If the previous token is a string literal, we need a special approach
510 -- since there may be white space inside the literal and we don't want
511 -- to stop on that white space.
513 -- Note: since this is an error recovery issue anyway, it is not worth
514 -- worrying about special UTF_32 line terminator characters here.
516 if Prev_Token
= Tok_String_Literal
then
520 if Source
(S1
) = C
then
522 exit when Source
(S1
) /= C
;
523 elsif Source
(S1
) in Line_Terminator
then
528 -- Character literal also needs special handling
530 elsif Prev_Token
= Tok_Char_Literal
then
533 -- Otherwise we search forward for the end of the current token, marked
534 -- by a line terminator, white space, a comment symbol or if we bump
535 -- into the following token (i.e. the current token).
537 -- Again, it is not worth worrying about UTF_32 special line terminator
538 -- characters in this context, since this is only for error recovery.
541 while Source
(S1
) not in Line_Terminator
542 and then Source
(S1
) /= ' '
543 and then Source
(S1
) /= ASCII
.HT
544 and then (Source
(S1
) /= '-' or else Source
(S1
+ 1) /= '-')
545 and then S1
/= Token_Ptr
551 -- S1 is now set to the location for the flag
560 procedure Error_Msg_BC
(Msg
: String) is
562 -- If we are at end of file, post the flag after the previous token
564 if Token
= Tok_EOF
then
567 -- If we are at start of file, post the flag at the current token
569 elsif Token_Ptr
= Source_First
(Current_Source_File
) then
572 -- If the character before the current token is a space or a horizontal
573 -- tab, then we place the flag on this character (in the case of a tab
574 -- we would really like to place it in the "last" character of the tab
575 -- space, but that it too much trouble to worry about).
577 elsif Source
(Token_Ptr
- 1) = ' '
578 or else Source
(Token_Ptr
- 1) = ASCII
.HT
580 Error_Msg
(Msg
, Token_Ptr
- 1);
582 -- If there is no space or tab before the current token, then there is
583 -- no room to place the flag before the token, so we place it on the
584 -- token instead (this happens for example at the start of a line).
587 Error_Msg
(Msg
, Token_Ptr
);
595 procedure Error_Msg_CRT
(Feature
: String; N
: Node_Id
) is
596 CNRT
: constant String := " not allowed in no run time mode";
597 CCRT
: constant String := " not supported by configuration>";
599 S
: String (1 .. Feature
'Length + 1 + CCRT
'Length);
604 S
(2 .. Feature
'Length + 1) := Feature
;
605 L
:= Feature
'Length + 2;
607 if No_Run_Time_Mode
then
608 S
(L
.. L
+ CNRT
'Length - 1) := CNRT
;
609 L
:= L
+ CNRT
'Length - 1;
611 else pragma Assert
(Configurable_Run_Time_Mode
);
612 S
(L
.. L
+ CCRT
'Length - 1) := CCRT
;
613 L
:= L
+ CCRT
'Length - 1;
616 Error_Msg_N
(S
(1 .. L
), N
);
617 Configurable_Run_Time_Violations
:= Configurable_Run_Time_Violations
+ 1;
624 procedure Error_Msg_PT
(Typ
: Node_Id
; Subp
: Node_Id
) is
626 -- Error message below needs rewording (remember comma in -gnatj
630 ("first formal of & must be of mode `OUT`, `IN OUT` or " &
631 "access-to-variable", Typ
, Subp
);
633 ("\in order to be overridden by protected procedure or entry " &
634 "(RM 9.4(11.9/2))", Typ
);
641 procedure Error_Msg_F
(Msg
: String; N
: Node_Id
) is
643 Error_Msg_NEL
(Msg
, N
, N
, Sloc
(First_Node
(N
)));
650 procedure Error_Msg_FE
653 E
: Node_Or_Entity_Id
)
656 Error_Msg_NEL
(Msg
, N
, E
, Sloc
(First_Node
(N
)));
659 ------------------------
660 -- Error_Msg_Internal --
661 ------------------------
663 procedure Error_Msg_Internal
669 Next_Msg
: Error_Msg_Id
;
670 -- Pointer to next message at insertion point
672 Prev_Msg
: Error_Msg_Id
;
673 -- Pointer to previous message at insertion point
675 Temp_Msg
: Error_Msg_Id
;
677 procedure Handle_Serious_Error
;
678 -- Internal procedure to do all error message handling for a serious
679 -- error message, other than bumping the error counts and arranging
680 -- for the message to be output.
682 --------------------------
683 -- Handle_Serious_Error --
684 --------------------------
686 procedure Handle_Serious_Error
is
688 -- Turn off code generation if not done already
690 if Operating_Mode
= Generate_Code
then
691 Operating_Mode
:= Check_Semantics
;
692 Expander_Active
:= False;
695 -- Set the fatal error flag in the unit table unless we are in
696 -- Try_Semantics mode. This stops the semantics from being performed
697 -- if we find a serious error. This is skipped if we are currently
698 -- dealing with the configuration pragma file.
700 if not Try_Semantics
and then Current_Source_Unit
/= No_Unit
then
701 Set_Fatal_Error
(Get_Source_Unit
(Sptr
));
703 end Handle_Serious_Error
;
705 -- Start of processing for Error_Msg_Internal
708 if Raise_Exception_On_Error
/= 0 then
709 raise Error_Msg_Exception
;
712 Continuation
:= Msg_Cont
;
713 Continuation_New_Line
:= False;
714 Suppress_Message
:= False;
715 Kill_Message
:= False;
716 Set_Msg_Text
(Msg
, Sptr
);
718 -- Kill continuation if parent message killed
720 if Continuation
and Last_Killed
then
724 -- Return without doing anything if message is suppressed
727 and then not All_Errors_Mode
728 and then not Is_Warning_Msg
729 and then Msg
(Msg
'Last) /= '!'
731 if not Continuation
then
738 -- Return without doing anything if message is killed and this is not
739 -- the first error message. The philosophy is that if we get a weird
740 -- error message and we already have had a message, then we hope the
741 -- weird message is a junk cascaded message
744 and then not All_Errors_Mode
745 and then Total_Errors_Detected
/= 0
747 if not Continuation
then
754 -- Special check for warning message to see if it should be output
756 if Is_Warning_Msg
then
758 -- Immediate return if warning message and warnings are suppressed
760 if Warnings_Suppressed
(Optr
) or else Warnings_Suppressed
(Sptr
) then
761 Cur_Msg
:= No_Error_Msg
;
765 -- If the flag location is in the main extended source unit then for
766 -- sure we want the warning since it definitely belongs
768 if In_Extended_Main_Source_Unit
(Sptr
) then
771 -- If the main unit has not been read yet. the warning must be on
772 -- a configuration file: gnat.adc or user-defined. This means we
773 -- are not parsing the main unit yet, so skip following checks.
775 elsif No
(Cunit
(Main_Unit
)) then
778 -- If the flag location is not in the main extended source unit, then
779 -- we want to eliminate the warning, unless it is in the extended
780 -- main code unit and we want warnings on the instance.
782 elsif In_Extended_Main_Code_Unit
(Sptr
) and then Warn_On_Instance
then
785 -- Keep warning if debug flag G set
787 elsif Debug_Flag_GG
then
790 -- Keep warning if message text ends in !!
792 elsif Msg
(Msg
'Last) = '!' and then Msg
(Msg
'Last - 1) = '!' then
795 -- Here is where we delete a warning from a with'ed unit
798 Cur_Msg
:= No_Error_Msg
;
800 if not Continuation
then
808 -- If message is to be ignored in special ignore message mode, this is
809 -- where we do this special processing, bypassing message output.
811 if Ignore_Errors_Enable
> 0 then
812 if Is_Serious_Error
then
813 Handle_Serious_Error
;
819 -- If error message line length set, and this is a continuation message
820 -- then all we do is to append the text to the text of the last message
821 -- with a comma space separator (eliminating a possible (style) or
824 if Error_Msg_Line_Length
/= 0 and then Continuation
then
825 Cur_Msg
:= Errors
.Last
;
828 Oldm
: String_Ptr
:= Errors
.Table
(Cur_Msg
).Text
;
829 Newm
: String (1 .. Oldm
'Last + 2 + Msglen
);
834 -- First copy old message to new one and free it
836 Newm
(Oldm
'Range) := Oldm
.all;
840 -- Remove (style) or info: at start of message
842 if Msglen
> 8 and then Msg_Buffer
(1 .. 8) = "(style) " then
845 elsif Msglen
> 6 and then Msg_Buffer
(1 .. 6) = "info: " then
852 -- Now deal with separation between messages. Normally this is
853 -- simply comma space, but there are some special cases.
855 -- If continuation new line, then put actual NL character in msg
857 if Continuation_New_Line
then
859 Newm
(Newl
) := ASCII
.LF
;
861 -- If continuation message is enclosed in parentheses, then
862 -- special treatment (don't need a comma, and we want to combine
863 -- successive parenthetical remarks into a single one with
864 -- separating commas).
866 elsif Msg_Buffer
(M
) = '(' and then Msg_Buffer
(Msglen
) = ')' then
868 -- Case where existing message ends in right paren, remove
869 -- and separate parenthetical remarks with a comma.
871 if Newm
(Newl
) = ')' then
873 Msg_Buffer
(M
) := ' ';
875 -- Case where we are adding new parenthetical comment
882 -- Case where continuation not in parens and no new line
885 Newm
(Newl
+ 1 .. Newl
+ 2) := ", ";
889 -- Append new message
891 Newm
(Newl
+ 1 .. Newl
+ Msglen
- M
+ 1) :=
892 Msg_Buffer
(M
.. Msglen
);
893 Newl
:= Newl
+ Msglen
- M
+ 1;
894 Errors
.Table
(Cur_Msg
).Text
:= new String'(Newm (1 .. Newl));
896 -- Update warning msg flag and message doc char if needed
898 if Is_Warning_Msg then
899 if not Errors.Table (Cur_Msg).Warn then
900 Errors.Table (Cur_Msg).Warn := True;
901 Errors.Table (Cur_Msg).Warn_Chr := Warning_Msg_Char;
903 elsif Warning_Msg_Char /= ' ' then
904 Errors.Table (Cur_Msg).Warn_Chr := Warning_Msg_Char;
912 -- Here we build a new error object
915 ((Text => new String'(Msg_Buffer
(1 .. Msglen
)),
916 Next
=> No_Error_Msg
,
917 Prev
=> No_Error_Msg
,
920 Sfile
=> Get_Source_File_Index
(Sptr
),
921 Line
=> Get_Physical_Line_Number
(Sptr
),
922 Col
=> Get_Column_Number
(Sptr
),
923 Warn
=> Is_Warning_Msg
,
924 Warn_Chr
=> Warning_Msg_Char
,
925 Style
=> Is_Style_Msg
,
926 Serious
=> Is_Serious_Error
,
927 Uncond
=> Is_Unconditional_Msg
,
928 Msg_Cont
=> Continuation
,
930 Cur_Msg
:= Errors
.Last
;
932 -- If immediate errors mode set, output error message now. Also output
933 -- now if the -d1 debug flag is set (so node number message comes out
934 -- just before actual error message)
936 if Debug_Flag_OO
or else Debug_Flag_1
then
939 (Errors
.Table
(Cur_Msg
).Line
, Errors
.Table
(Cur_Msg
).Sfile
, True);
941 Output_Error_Msgs
(Temp_Msg
);
943 -- If not in immediate errors mode, then we insert the message in the
944 -- error chain for later output by Finalize. The messages are sorted
945 -- first by unit (main unit comes first), and within a unit by source
946 -- location (earlier flag location first in the chain).
949 -- First a quick check, does this belong at the very end of the chain
950 -- of error messages. This saves a lot of time in the normal case if
951 -- there are lots of messages.
953 if Last_Error_Msg
/= No_Error_Msg
954 and then Errors
.Table
(Cur_Msg
).Sfile
=
955 Errors
.Table
(Last_Error_Msg
).Sfile
956 and then (Sptr
> Errors
.Table
(Last_Error_Msg
).Sptr
958 (Sptr
= Errors
.Table
(Last_Error_Msg
).Sptr
960 Optr
> Errors
.Table
(Last_Error_Msg
).Optr
))
962 Prev_Msg
:= Last_Error_Msg
;
963 Next_Msg
:= No_Error_Msg
;
965 -- Otherwise do a full sequential search for the insertion point
968 Prev_Msg
:= No_Error_Msg
;
969 Next_Msg
:= First_Error_Msg
;
970 while Next_Msg
/= No_Error_Msg
loop
972 Errors
.Table
(Cur_Msg
).Sfile
< Errors
.Table
(Next_Msg
).Sfile
;
974 if Errors
.Table
(Cur_Msg
).Sfile
=
975 Errors
.Table
(Next_Msg
).Sfile
977 exit when Sptr
< Errors
.Table
(Next_Msg
).Sptr
979 (Sptr
= Errors
.Table
(Next_Msg
).Sptr
981 Optr
< Errors
.Table
(Next_Msg
).Optr
);
984 Prev_Msg
:= Next_Msg
;
985 Next_Msg
:= Errors
.Table
(Next_Msg
).Next
;
989 -- Now we insert the new message in the error chain. The insertion
990 -- point for the message is after Prev_Msg and before Next_Msg.
992 -- The possible insertion point for the new message is after Prev_Msg
993 -- and before Next_Msg. However, this is where we do a special check
994 -- for redundant parsing messages, defined as messages posted on the
995 -- same line. The idea here is that probably such messages are junk
996 -- from the parser recovering. In full errors mode, we don't do this
997 -- deletion, but otherwise such messages are discarded at this stage.
999 if Prev_Msg
/= No_Error_Msg
1000 and then Errors
.Table
(Prev_Msg
).Line
=
1001 Errors
.Table
(Cur_Msg
).Line
1002 and then Errors
.Table
(Prev_Msg
).Sfile
=
1003 Errors
.Table
(Cur_Msg
).Sfile
1004 and then Compiler_State
= Parsing
1005 and then not All_Errors_Mode
1007 -- Don't delete unconditional messages and at this stage, don't
1008 -- delete continuation lines (we attempted to delete those earlier
1009 -- if the parent message was deleted.
1011 if not Errors
.Table
(Cur_Msg
).Uncond
1012 and then not Continuation
1014 -- Don't delete if prev msg is warning and new msg is an error.
1015 -- This is because we don't want a real error masked by a
1016 -- warning. In all other cases (that is parse errors for the
1017 -- same line that are not unconditional) we do delete the
1018 -- message. This helps to avoid junk extra messages from
1019 -- cascaded parsing errors
1021 if not (Errors
.Table
(Prev_Msg
).Warn
1023 Errors
.Table
(Prev_Msg
).Style
)
1025 (Errors
.Table
(Cur_Msg
).Warn
1027 Errors
.Table
(Cur_Msg
).Style
)
1029 -- All tests passed, delete the message by simply returning
1030 -- without any further processing.
1032 if not Continuation
then
1033 Last_Killed
:= True;
1041 -- Come here if message is to be inserted in the error chain
1043 if not Continuation
then
1044 Last_Killed
:= False;
1047 if Prev_Msg
= No_Error_Msg
then
1048 First_Error_Msg
:= Cur_Msg
;
1050 Errors
.Table
(Prev_Msg
).Next
:= Cur_Msg
;
1053 Errors
.Table
(Cur_Msg
).Next
:= Next_Msg
;
1055 if Next_Msg
= No_Error_Msg
then
1056 Last_Error_Msg
:= Cur_Msg
;
1060 -- Bump appropriate statistics count
1062 if Errors
.Table
(Cur_Msg
).Warn
or else Errors
.Table
(Cur_Msg
).Style
then
1063 Warnings_Detected
:= Warnings_Detected
+ 1;
1066 Total_Errors_Detected
:= Total_Errors_Detected
+ 1;
1068 if Errors
.Table
(Cur_Msg
).Serious
then
1069 Serious_Errors_Detected
:= Serious_Errors_Detected
+ 1;
1070 Handle_Serious_Error
;
1074 -- If too many warnings turn off warnings
1076 if Maximum_Messages
/= 0 then
1077 if Warnings_Detected
= Maximum_Messages
then
1078 Warning_Mode
:= Suppress
;
1081 -- If too many errors abandon compilation
1083 if Total_Errors_Detected
= Maximum_Messages
then
1084 raise Unrecoverable_Error
;
1087 end Error_Msg_Internal
;
1093 procedure Error_Msg_N
(Msg
: String; N
: Node_Or_Entity_Id
) is
1095 Error_Msg_NEL
(Msg
, N
, N
, Sloc
(N
));
1102 procedure Error_Msg_NE
1104 N
: Node_Or_Entity_Id
;
1105 E
: Node_Or_Entity_Id
)
1108 Error_Msg_NEL
(Msg
, N
, E
, Sloc
(N
));
1115 procedure Error_Msg_NEL
1117 N
: Node_Or_Entity_Id
;
1118 E
: Node_Or_Entity_Id
;
1119 Flag_Location
: Source_Ptr
)
1122 if Special_Msg_Delete
(Msg
, N
, E
) then
1126 Test_Style_Warning_Serious_Msg
(Msg
);
1128 -- Special handling for warning messages
1130 if Is_Warning_Msg
then
1132 -- Suppress if no warnings set for either entity or node
1134 if No_Warnings
(N
) or else No_Warnings
(E
) then
1136 -- Disable any continuation messages as well
1138 Last_Killed
:= True;
1142 -- Suppress if inside loop that is known to be null or is probably
1143 -- null (case where loop executes only if invalid values present).
1144 -- In either case warnings in the loop are likely to be junk.
1151 while Present
(P
) loop
1152 if Nkind
(P
) = N_Loop_Statement
1153 and then Suppress_Loop_Warnings
(P
)
1163 -- Test for message to be output
1166 or else Msg
(Msg
'Last) = '!'
1167 or else Is_Warning_Msg
1169 or else (Msg
(Msg
'First) = '\' and then not Last_Killed
)
1172 Error_Msg_Node_1
:= E
;
1173 Error_Msg
(Msg
, Flag_Location
);
1176 Last_Killed
:= True;
1179 if not (Is_Warning_Msg
or Is_Style_Msg
) then
1188 procedure Error_Msg_NW
1191 N
: Node_Or_Entity_Id
)
1195 and then In_Extended_Main_Source_Unit
(N
)
1196 and then Comes_From_Source
(N
)
1198 Error_Msg_NEL
(Msg
, N
, N
, Sloc
(N
));
1206 procedure Error_Msg_S
(Msg
: String) is
1208 Error_Msg
(Msg
, Scan_Ptr
);
1215 procedure Error_Msg_SC
(Msg
: String) is
1217 -- If we are at end of file, post the flag after the previous token
1219 if Token
= Tok_EOF
then
1222 -- For all other cases the message is posted at the current token
1226 Error_Msg
(Msg
, Token_Ptr
);
1234 procedure Error_Msg_SP
(Msg
: String) is
1236 -- Note: in the case where there is no previous token, Prev_Token_Ptr
1237 -- is set to Source_First, which is a reasonable position for the
1238 -- error flag in this situation
1240 Error_Msg
(Msg
, Prev_Token_Ptr
);
1247 procedure Finalize
(Last_Call
: Boolean) is
1252 procedure Delete_Warning
(E
: Error_Msg_Id
);
1253 -- Delete a message if not already deleted and adjust warning count
1255 --------------------
1256 -- Delete_Warning --
1257 --------------------
1259 procedure Delete_Warning
(E
: Error_Msg_Id
) is
1261 if not Errors
.Table
(E
).Deleted
then
1262 Errors
.Table
(E
).Deleted
:= True;
1263 Warnings_Detected
:= Warnings_Detected
- 1;
1267 -- Start of message for Finalize
1270 -- Set Prev pointers
1272 Cur
:= First_Error_Msg
;
1273 while Cur
/= No_Error_Msg
loop
1274 Nxt
:= Errors
.Table
(Cur
).Next
;
1275 exit when Nxt
= No_Error_Msg
;
1276 Errors
.Table
(Nxt
).Prev
:= Cur
;
1280 -- Eliminate any duplicated error messages from the list. This is
1281 -- done after the fact to avoid problems with Change_Error_Text.
1283 Cur
:= First_Error_Msg
;
1284 while Cur
/= No_Error_Msg
loop
1285 Nxt
:= Errors
.Table
(Cur
).Next
;
1288 while F
/= No_Error_Msg
1289 and then Errors
.Table
(F
).Sptr
= Errors
.Table
(Cur
).Sptr
1291 Check_Duplicate_Message
(Cur
, F
);
1292 F
:= Errors
.Table
(F
).Next
;
1298 -- Mark any messages suppressed by specific warnings as Deleted
1300 Cur
:= First_Error_Msg
;
1301 while Cur
/= No_Error_Msg
loop
1303 CE
: Error_Msg_Object
renames Errors
.Table
(Cur
);
1308 (Warning_Specifically_Suppressed
(CE
.Sptr
, CE
.Text
)
1310 Warning_Specifically_Suppressed
(CE
.Optr
, CE
.Text
))
1312 Delete_Warning
(Cur
);
1314 -- If this is a continuation, delete previous messages
1317 while Errors
.Table
(F
).Msg_Cont
loop
1318 F
:= Errors
.Table
(F
).Prev
;
1322 -- Delete any following continuations
1326 F
:= Errors
.Table
(F
).Next
;
1327 exit when F
= No_Error_Msg
;
1328 exit when not Errors
.Table
(F
).Msg_Cont
;
1334 Cur
:= Errors
.Table
(Cur
).Next
;
1337 Finalize_Called
:= True;
1339 -- Check consistency of specific warnings (may add warnings). We only
1340 -- do this on the last call, after all possible warnings are posted.
1343 Validate_Specific_Warnings
(Error_Msg
'Access);
1351 function First_Node
(C
: Node_Id
) return Node_Id
is
1352 Orig
: constant Node_Id
:= Original_Node
(C
);
1353 Loc
: constant Source_Ptr
:= Sloc
(Orig
);
1354 Sfile
: constant Source_File_Index
:= Get_Source_File_Index
(Loc
);
1358 function Test_Earlier
(N
: Node_Id
) return Traverse_Result
;
1359 -- Function applied to every node in the construct
1361 procedure Search_Tree_First
is new Traverse_Proc
(Test_Earlier
);
1362 -- Create traversal procedure
1368 function Test_Earlier
(N
: Node_Id
) return Traverse_Result
is
1369 Norig
: constant Node_Id
:= Original_Node
(N
);
1370 Loc
: constant Source_Ptr
:= Sloc
(Norig
);
1373 -- Check for earlier
1377 -- Ignore nodes with no useful location information
1379 and then Loc
/= Standard_Location
1380 and then Loc
/= No_Location
1382 -- Ignore nodes from a different file. This ensures against cases
1383 -- of strange foreign code somehow being present. We don't want
1384 -- wild placement of messages if that happens.
1386 and then Get_Source_File_Index
(Loc
) = Sfile
1395 -- Start of processing for First_Node
1398 if Nkind
(Orig
) in N_Subexpr
then
1401 Search_Tree_First
(Orig
);
1413 function First_Sloc
(N
: Node_Id
) return Source_Ptr
is
1414 SI
: constant Source_File_Index
:= Source_Index
(Get_Source_Unit
(N
));
1415 SF
: constant Source_Ptr
:= Source_First
(SI
);
1420 F
:= First_Node
(N
);
1423 -- The following circuit is a bit subtle. When we have parenthesized
1424 -- expressions, then the Sloc will not record the location of the paren,
1425 -- but we would like to post the flag on the paren. So what we do is to
1426 -- crawl up the tree from the First_Node, adjusting the Sloc value for
1427 -- any parentheses we know are present. Yes, we know this circuit is not
1428 -- 100% reliable (e.g. because we don't record all possible paren level
1429 -- values), but this is only for an error message so it is good enough.
1432 Paren_Loop
: for J
in 1 .. Paren_Count
(F
) loop
1434 -- We don't look more than 12 characters behind the current
1435 -- location, and in any case not past the front of the source.
1437 Search_Loop
: for K
in 1 .. 12 loop
1438 exit Search_Loop
when S
= SF
;
1440 if Source_Text
(SI
) (S
- 1) = '(' then
1444 elsif Source_Text
(SI
) (S
- 1) <= ' ' then
1450 end loop Search_Loop
;
1451 end loop Paren_Loop
;
1453 exit Node_Loop
when F
= N
;
1455 exit Node_Loop
when Nkind
(F
) not in N_Subexpr
;
1461 -----------------------
1462 -- Get_Ignore_Errors --
1463 -----------------------
1465 function Get_Ignore_Errors
return Boolean is
1467 return Errors_Must_Be_Ignored
;
1468 end Get_Ignore_Errors
;
1474 procedure Initialize
is
1477 First_Error_Msg
:= No_Error_Msg
;
1478 Last_Error_Msg
:= No_Error_Msg
;
1479 Serious_Errors_Detected
:= 0;
1480 Total_Errors_Detected
:= 0;
1481 Warnings_Detected
:= 0;
1482 Cur_Msg
:= No_Error_Msg
;
1485 -- Initialize warnings table, if all warnings are suppressed, supply an
1486 -- initial dummy entry covering all possible source locations.
1489 Specific_Warnings
.Init
;
1491 if Warning_Mode
= Suppress
then
1493 ((Start
=> Source_Ptr
'First, Stop
=> Source_Ptr
'Last));
1501 function No_Warnings
(N
: Node_Or_Entity_Id
) return Boolean is
1503 if Error_Posted
(N
) then
1506 elsif Nkind
(N
) in N_Entity
and then Has_Warnings_Off
(N
) then
1509 elsif Is_Entity_Name
(N
)
1510 and then Present
(Entity
(N
))
1511 and then Has_Warnings_Off
(Entity
(N
))
1524 function OK_Node
(N
: Node_Id
) return Boolean is
1525 K
: constant Node_Kind
:= Nkind
(N
);
1528 if Error_Posted
(N
) then
1531 elsif K
in N_Has_Etype
1532 and then Present
(Etype
(N
))
1533 and then Error_Posted
(Etype
(N
))
1538 or else K
= N_Attribute_Reference
1539 or else K
= N_Character_Literal
1540 or else K
= N_Expanded_Name
1541 or else K
= N_Identifier
1542 or else K
= N_Operator_Symbol
)
1543 and then Present
(Entity
(N
))
1544 and then Error_Posted
(Entity
(N
))
1552 ---------------------
1553 -- Output_Messages --
1554 ---------------------
1556 procedure Output_Messages
is
1560 procedure Write_Error_Summary
;
1561 -- Write error summary
1563 procedure Write_Header
(Sfile
: Source_File_Index
);
1564 -- Write header line (compiling or checking given file)
1566 procedure Write_Max_Errors
;
1567 -- Write message if max errors reached
1569 -------------------------
1570 -- Write_Error_Summary --
1571 -------------------------
1573 procedure Write_Error_Summary
is
1575 -- Extra blank line if error messages or source listing were output
1577 if Total_Errors_Detected
+ Warnings_Detected
> 0
1583 -- Message giving number of lines read and number of errors detected.
1584 -- This normally goes to Standard_Output. The exception is when brief
1585 -- mode is not set, verbose mode (or full list mode) is set, and
1586 -- there are errors. In this case we send the message to standard
1587 -- error to make sure that *something* appears on standard error in
1588 -- an error situation.
1590 -- Formerly, only the "# errors" suffix was sent to stderr, whereas
1591 -- "# lines:" appeared on stdout. This caused problems on VMS when
1592 -- the stdout buffer was flushed, giving an extra line feed after
1595 if Total_Errors_Detected
+ Warnings_Detected
/= 0
1596 and then not Brief_Output
1597 and then (Verbose_Mode
or Full_List
)
1602 -- Message giving total number of lines
1605 Write_Int
(Num_Source_Lines
(Main_Source_File
));
1607 if Num_Source_Lines
(Main_Source_File
) = 1 then
1608 Write_Str
(" line: ");
1610 Write_Str
(" lines: ");
1613 if Total_Errors_Detected
= 0 then
1614 Write_Str
("No errors");
1616 elsif Total_Errors_Detected
= 1 then
1617 Write_Str
("1 error");
1620 Write_Int
(Total_Errors_Detected
);
1621 Write_Str
(" errors");
1624 if Warnings_Detected
/= 0 then
1626 Write_Int
(Warnings_Detected
);
1627 Write_Str
(" warning");
1629 if Warnings_Detected
/= 1 then
1633 if Warning_Mode
= Treat_As_Error
then
1634 Write_Str
(" (treated as error");
1636 if Warnings_Detected
/= 1 then
1645 Set_Standard_Output
;
1646 end Write_Error_Summary
;
1652 procedure Write_Header
(Sfile
: Source_File_Index
) is
1654 if Verbose_Mode
or Full_List
then
1655 if Original_Operating_Mode
= Generate_Code
then
1656 Write_Str
("Compiling: ");
1658 Write_Str
("Checking: ");
1661 Write_Name
(Full_File_Name
(Sfile
));
1663 if not Debug_Flag_7
then
1664 Write_Str
(" (source file time stamp: ");
1665 Write_Time_Stamp
(Sfile
);
1673 ----------------------
1674 -- Write_Max_Errors --
1675 ----------------------
1677 procedure Write_Max_Errors
is
1679 if Maximum_Messages
/= 0 then
1680 if Warnings_Detected
>= Maximum_Messages
then
1682 Write_Line
("maximum number of warnings output");
1683 Write_Line
("any further warnings suppressed");
1684 Set_Standard_Output
;
1687 -- If too many errors print message
1689 if Total_Errors_Detected
>= Maximum_Messages
then
1691 Write_Line
("fatal error: maximum number of errors detected");
1692 Set_Standard_Output
;
1695 end Write_Max_Errors
;
1697 -- Start of processing for Output_Messages
1700 -- Error if Finalize has not been called
1702 if not Finalize_Called
then
1703 raise Program_Error
;
1706 -- Reset current error source file if the main unit has a pragma
1707 -- Source_Reference. This ensures outputting the proper name of
1708 -- the source file in this situation.
1710 if Main_Source_File
= No_Source_File
1711 or else Num_SRef_Pragmas
(Main_Source_File
) /= 0
1713 Current_Error_Source_File
:= No_Source_File
;
1718 if Brief_Output
or (not Full_List
and not Verbose_Mode
) then
1721 E
:= First_Error_Msg
;
1722 while E
/= No_Error_Msg
loop
1723 if not Errors
.Table
(E
).Deleted
and then not Debug_Flag_KK
then
1724 if Full_Path_Name_For_Brief_Errors
then
1725 Write_Name
(Full_Ref_Name
(Errors
.Table
(E
).Sfile
));
1727 Write_Name
(Reference_Name
(Errors
.Table
(E
).Sfile
));
1731 Write_Int
(Int
(Physical_To_Logical
1732 (Errors
.Table
(E
).Line
,
1733 Errors
.Table
(E
).Sfile
)));
1736 if Errors
.Table
(E
).Col
< 10 then
1740 Write_Int
(Int
(Errors
.Table
(E
).Col
));
1742 Output_Msg_Text
(E
);
1746 E
:= Errors
.Table
(E
).Next
;
1749 Set_Standard_Output
;
1752 -- Full source listing case
1755 List_Pragmas_Index
:= 1;
1756 List_Pragmas_Mode
:= True;
1757 E
:= First_Error_Msg
;
1759 -- Normal case, to stdout (copyright notice already output)
1761 if Full_List_File_Name
= null then
1762 if not Debug_Flag_7
then
1769 Create_List_File_Access
.all (Full_List_File_Name
.all);
1770 Set_Special_Output
(Write_List_Info_Access
.all'Access);
1772 -- Write copyright notice to file
1774 if not Debug_Flag_7
then
1775 Write_Str
("GNAT ");
1776 Write_Str
(Gnat_Version_String
);
1778 Write_Str
("Copyright 1992-" &
1780 ", Free Software Foundation, Inc.");
1785 -- First list extended main source file units with errors
1787 for U
in Main_Unit
.. Last_Unit
loop
1788 if In_Extended_Main_Source_Unit
(Cunit_Entity
(U
))
1790 -- If debug flag d.m is set, only the main source is listed
1792 and then (U
= Main_Unit
or else not Debug_Flag_Dot_M
)
1794 -- If the unit of the entity does not come from source, it is
1795 -- an implicit subprogram declaration for a child subprogram.
1796 -- Do not emit errors for it, they are listed with the body.
1799 (No
(Cunit_Entity
(U
))
1800 or else Comes_From_Source
(Cunit_Entity
(U
))
1801 or else not Is_Subprogram
(Cunit_Entity
(U
)))
1804 Sfile
: constant Source_File_Index
:= Source_Index
(U
);
1808 Write_Header
(Sfile
);
1811 -- Normally, we don't want an "error messages from file"
1812 -- message when listing the entire file, so we set the
1813 -- current source file as the current error source file.
1814 -- However, the old style of doing things was to list this
1815 -- message if pragma Source_Reference is present, even for
1816 -- the main unit. Since the purpose of the -gnatd.m switch
1817 -- is to duplicate the old behavior, we skip the reset if
1818 -- this debug flag is set.
1820 if not Debug_Flag_Dot_M
then
1821 Current_Error_Source_File
:= Sfile
;
1824 for N
in 1 .. Last_Source_Line
(Sfile
) loop
1825 while E
/= No_Error_Msg
1826 and then Errors
.Table
(E
).Deleted
1828 E
:= Errors
.Table
(E
).Next
;
1833 and then Errors
.Table
(E
).Line
= N
1834 and then Errors
.Table
(E
).Sfile
= Sfile
;
1836 Output_Source_Line
(N
, Sfile
, Err_Flag
);
1839 Output_Error_Msgs
(E
);
1841 if not Debug_Flag_2
then
1850 -- Then output errors, if any, for subsidiary units not in the
1851 -- main extended unit.
1853 -- Note: if debug flag d.m set, include errors for any units other
1854 -- than the main unit in the extended source unit (e.g. spec and
1855 -- subunits for a body).
1857 while E
/= No_Error_Msg
1858 and then (not In_Extended_Main_Source_Unit
(Errors
.Table
(E
).Sptr
)
1861 and then Get_Source_Unit
1862 (Errors
.Table
(E
).Sptr
) /= Main_Unit
))
1864 if Errors
.Table
(E
).Deleted
then
1865 E
:= Errors
.Table
(E
).Next
;
1870 (Errors
.Table
(E
).Line
, Errors
.Table
(E
).Sfile
, True);
1871 Output_Error_Msgs
(E
);
1875 -- If output to file, write extra copy of error summary to the
1876 -- output file, and then close it.
1878 if Full_List_File_Name
/= null then
1879 Write_Error_Summary
;
1881 Close_List_File_Access
.all;
1882 Cancel_Special_Output
;
1886 -- Verbose mode (error lines only with error flags). Normally this is
1887 -- ignored in full list mode, unless we are listing to a file, in which
1888 -- case we still generate -gnatv output to standard output.
1891 and then (not Full_List
or else Full_List_File_Name
/= null)
1894 Write_Header
(Main_Source_File
);
1895 E
:= First_Error_Msg
;
1897 -- Loop through error lines
1899 while E
/= No_Error_Msg
loop
1900 if Errors
.Table
(E
).Deleted
then
1901 E
:= Errors
.Table
(E
).Next
;
1905 (Errors
.Table
(E
).Line
, Errors
.Table
(E
).Sfile
, True);
1906 Output_Error_Msgs
(E
);
1911 -- Output error summary if verbose or full list mode
1913 if Verbose_Mode
or else Full_List
then
1914 Write_Error_Summary
;
1919 if Warning_Mode
= Treat_As_Error
then
1920 Total_Errors_Detected
:= Total_Errors_Detected
+ Warnings_Detected
;
1921 Warnings_Detected
:= 0;
1923 end Output_Messages
;
1925 ------------------------
1926 -- Output_Source_Line --
1927 ------------------------
1929 procedure Output_Source_Line
1930 (L
: Physical_Line_Number
;
1931 Sfile
: Source_File_Index
;
1937 Line_Number_Output
: Boolean := False;
1938 -- Set True once line number is output
1940 Empty_Line
: Boolean := True;
1941 -- Set False if line includes at least one character
1944 if Sfile
/= Current_Error_Source_File
then
1945 Write_Str
("==============Error messages for ");
1947 case Sinput
.File_Type
(Sfile
) is
1949 Write_Str
("source");
1951 when Sinput
.Config
=>
1952 Write_Str
("configuration pragmas");
1955 Write_Str
("symbol definition");
1957 when Sinput
.Preproc
=>
1958 Write_Str
("preprocessing data");
1961 Write_Str
(" file: ");
1962 Write_Name
(Full_File_Name
(Sfile
));
1965 if Num_SRef_Pragmas
(Sfile
) > 0 then
1966 Write_Str
("--------------Line numbers from file: ");
1967 Write_Name
(Full_Ref_Name
(Sfile
));
1968 Write_Str
(" (starting at line ");
1969 Write_Int
(Int
(First_Mapped_Line
(Sfile
)));
1974 Current_Error_Source_File
:= Sfile
;
1977 if Errs
or List_Pragmas_Mode
then
1978 Output_Line_Number
(Physical_To_Logical
(L
, Sfile
));
1979 Line_Number_Output
:= True;
1982 S
:= Line_Start
(L
, Sfile
);
1985 C
:= Source_Text
(Sfile
) (S
);
1986 exit when C
= ASCII
.LF
or else C
= ASCII
.CR
or else C
= EOF
;
1988 -- Deal with matching entry in List_Pragmas table
1991 and then List_Pragmas_Index
<= List_Pragmas
.Last
1992 and then S
= List_Pragmas
.Table
(List_Pragmas_Index
).Ploc
1994 case List_Pragmas
.Table
(List_Pragmas_Index
).Ptyp
is
1998 -- Ignore if on line with errors so that error flags
1999 -- get properly listed with the error line .
2002 Write_Char
(ASCII
.FF
);
2006 List_Pragmas_Mode
:= True;
2008 if not Line_Number_Output
then
2009 Output_Line_Number
(Physical_To_Logical
(L
, Sfile
));
2010 Line_Number_Output
:= True;
2017 List_Pragmas_Mode
:= False;
2020 List_Pragmas_Index
:= List_Pragmas_Index
+ 1;
2022 -- Normal case (no matching entry in List_Pragmas table)
2025 if Errs
or List_Pragmas_Mode
then
2030 Empty_Line
:= False;
2034 -- If we have output a source line, then add the line terminator, with
2035 -- training spaces preserved (so we output the line exactly as input).
2037 if Line_Number_Output
then
2041 Write_Eol_Keep_Blanks
;
2044 end Output_Source_Line
;
2046 -----------------------------
2047 -- Remove_Warning_Messages --
2048 -----------------------------
2050 procedure Remove_Warning_Messages
(N
: Node_Id
) is
2052 function Check_For_Warning
(N
: Node_Id
) return Traverse_Result
;
2053 -- This function checks one node for a possible warning message
2055 function Check_All_Warnings
is new Traverse_Func
(Check_For_Warning
);
2056 -- This defines the traversal operation
2058 -----------------------
2059 -- Check_For_Warning --
2060 -----------------------
2062 function Check_For_Warning
(N
: Node_Id
) return Traverse_Result
is
2063 Loc
: constant Source_Ptr
:= Sloc
(N
);
2066 function To_Be_Removed
(E
: Error_Msg_Id
) return Boolean;
2067 -- Returns True for a message that is to be removed. Also adjusts
2068 -- warning count appropriately.
2074 function To_Be_Removed
(E
: Error_Msg_Id
) return Boolean is
2076 if E
/= No_Error_Msg
2078 -- Don't remove if location does not match
2080 and then Errors
.Table
(E
).Optr
= Loc
2082 -- Don't remove if not warning/info message. Note that we do
2083 -- not remove style messages here. They are warning messages
2084 -- but not ones we want removed in this context.
2086 and then Errors
.Table
(E
).Warn
2088 -- Don't remove unconditional messages
2090 and then not Errors
.Table
(E
).Uncond
2092 Warnings_Detected
:= Warnings_Detected
- 1;
2095 -- No removal required
2102 -- Start of processing for Check_For_Warnings
2105 while To_Be_Removed
(First_Error_Msg
) loop
2106 First_Error_Msg
:= Errors
.Table
(First_Error_Msg
).Next
;
2109 if First_Error_Msg
= No_Error_Msg
then
2110 Last_Error_Msg
:= No_Error_Msg
;
2113 E
:= First_Error_Msg
;
2114 while E
/= No_Error_Msg
loop
2115 while To_Be_Removed
(Errors
.Table
(E
).Next
) loop
2116 Errors
.Table
(E
).Next
:=
2117 Errors
.Table
(Errors
.Table
(E
).Next
).Next
;
2119 if Errors
.Table
(E
).Next
= No_Error_Msg
then
2120 Last_Error_Msg
:= E
;
2124 E
:= Errors
.Table
(E
).Next
;
2127 if Nkind
(N
) = N_Raise_Constraint_Error
2128 and then Original_Node
(N
) /= N
2129 and then No
(Condition
(N
))
2131 -- Warnings may have been posted on subexpressions of the original
2132 -- tree. We place the original node back on the tree to remove
2133 -- those warnings, whose sloc do not match those of any node in
2134 -- the current tree. Given that we are in unreachable code, this
2135 -- modification to the tree is harmless.
2138 Status
: Traverse_Final_Result
;
2141 if Is_List_Member
(N
) then
2142 Set_Condition
(N
, Original_Node
(N
));
2143 Status
:= Check_All_Warnings
(Condition
(N
));
2145 Rewrite
(N
, Original_Node
(N
));
2146 Status
:= Check_All_Warnings
(N
);
2155 end Check_For_Warning
;
2157 -- Start of processing for Remove_Warning_Messages
2160 if Warnings_Detected
/= 0 then
2162 Discard
: Traverse_Final_Result
;
2163 pragma Warnings
(Off
, Discard
);
2166 Discard
:= Check_All_Warnings
(N
);
2169 end Remove_Warning_Messages
;
2171 procedure Remove_Warning_Messages
(L
: List_Id
) is
2174 if Is_Non_Empty_List
(L
) then
2176 while Present
(Stat
) loop
2177 Remove_Warning_Messages
(Stat
);
2181 end Remove_Warning_Messages
;
2183 ---------------------------
2184 -- Set_Identifier_Casing --
2185 ---------------------------
2187 procedure Set_Identifier_Casing
2188 (Identifier_Name
: System
.Address
;
2189 File_Name
: System
.Address
)
2191 Ident
: constant Big_String_Ptr
:= To_Big_String_Ptr
(Identifier_Name
);
2192 File
: constant Big_String_Ptr
:= To_Big_String_Ptr
(File_Name
);
2195 Desired_Case
: Casing_Type
:= Mixed_Case
;
2196 -- Casing required for result. Default value of Mixed_Case is used if
2197 -- for some reason we cannot find the right file name in the table.
2200 -- Get length of file name
2203 while File
(Flen
+ 1) /= ASCII
.NUL
loop
2207 -- Loop through file names to find matching one. This is a bit slow, but
2208 -- we only do it in error situations so it is not so terrible. Note that
2209 -- if the loop does not exit, then the desired case will be left set to
2210 -- Mixed_Case, this can happen if the name was not in canonical form,
2211 -- and gets canonicalized on VMS. Possibly we could fix this by
2212 -- unconditionally canonicalizing these names ???
2214 for J
in 1 .. Last_Source_File
loop
2215 Get_Name_String
(Full_Debug_Name
(J
));
2218 and then Name_Buffer
(1 .. Name_Len
) = String (File
(1 .. Flen
))
2220 Desired_Case
:= Identifier_Casing
(J
);
2225 -- Copy identifier as given to Name_Buffer
2227 for J
in Name_Buffer
'Range loop
2228 Name_Buffer
(J
) := Ident
(J
);
2230 if Name_Buffer
(J
) = ASCII
.NUL
then
2236 Set_Casing
(Desired_Case
);
2237 end Set_Identifier_Casing
;
2239 -----------------------
2240 -- Set_Ignore_Errors --
2241 -----------------------
2243 procedure Set_Ignore_Errors
(To
: Boolean) is
2245 Errors_Must_Be_Ignored
:= To
;
2246 end Set_Ignore_Errors
;
2248 ------------------------------
2249 -- Set_Msg_Insertion_Column --
2250 ------------------------------
2252 procedure Set_Msg_Insertion_Column
is
2254 if RM_Column_Check
then
2255 Set_Msg_Str
(" in column ");
2256 Set_Msg_Int
(Int
(Error_Msg_Col
) + 1);
2258 end Set_Msg_Insertion_Column
;
2260 ----------------------------
2261 -- Set_Msg_Insertion_Node --
2262 ----------------------------
2264 procedure Set_Msg_Insertion_Node
is
2269 Error_Msg_Node_1
= Error
2270 or else Error_Msg_Node_1
= Any_Type
;
2272 if Error_Msg_Node_1
= Empty
then
2273 Set_Msg_Blank_Conditional
;
2274 Set_Msg_Str
("<empty>");
2276 elsif Error_Msg_Node_1
= Error
then
2278 Set_Msg_Str
("<error>");
2280 elsif Error_Msg_Node_1
= Standard_Void_Type
then
2282 Set_Msg_Str
("procedure name");
2285 Set_Msg_Blank_Conditional
;
2289 K
:= Nkind
(Error_Msg_Node_1
);
2291 -- If we have operator case, skip quotes since name of operator
2292 -- itself will supply the required quotations. An operator can be an
2293 -- applied use in an expression or an explicit operator symbol, or an
2294 -- identifier whose name indicates it is an operator.
2297 or else K
= N_Operator_Symbol
2298 or else K
= N_Defining_Operator_Symbol
2299 or else ((K
= N_Identifier
or else K
= N_Defining_Identifier
)
2300 and then Is_Operator_Name
(Chars
(Error_Msg_Node_1
)))
2302 Set_Msg_Node
(Error_Msg_Node_1
);
2304 -- Normal case, not an operator, surround with quotes
2308 Set_Qualification
(Error_Msg_Qual_Level
, Error_Msg_Node_1
);
2309 Set_Msg_Node
(Error_Msg_Node_1
);
2314 -- The following assignment ensures that a second ampersand insertion
2315 -- character will correspond to the Error_Msg_Node_2 parameter. We
2316 -- suppress possible validity checks in case operating in -gnatVa mode,
2317 -- and Error_Msg_Node_2 is not needed and has not been set.
2320 pragma Suppress
(Range_Check
);
2322 Error_Msg_Node_1
:= Error_Msg_Node_2
;
2324 end Set_Msg_Insertion_Node
;
2326 --------------------------------------
2327 -- Set_Msg_Insertion_Type_Reference --
2328 --------------------------------------
2330 procedure Set_Msg_Insertion_Type_Reference
(Flag
: Source_Ptr
) is
2336 if Error_Msg_Node_1
= Standard_Void_Type
then
2337 Set_Msg_Str
("package or procedure name");
2340 elsif Error_Msg_Node_1
= Standard_Exception_Type
then
2341 Set_Msg_Str
("exception name");
2344 elsif Error_Msg_Node_1
= Any_Access
2345 or else Error_Msg_Node_1
= Any_Array
2346 or else Error_Msg_Node_1
= Any_Boolean
2347 or else Error_Msg_Node_1
= Any_Character
2348 or else Error_Msg_Node_1
= Any_Composite
2349 or else Error_Msg_Node_1
= Any_Discrete
2350 or else Error_Msg_Node_1
= Any_Fixed
2351 or else Error_Msg_Node_1
= Any_Integer
2352 or else Error_Msg_Node_1
= Any_Modular
2353 or else Error_Msg_Node_1
= Any_Numeric
2354 or else Error_Msg_Node_1
= Any_Real
2355 or else Error_Msg_Node_1
= Any_Scalar
2356 or else Error_Msg_Node_1
= Any_String
2358 Get_Unqualified_Decoded_Name_String
(Chars
(Error_Msg_Node_1
));
2359 Set_Msg_Name_Buffer
;
2362 elsif Error_Msg_Node_1
= Universal_Real
then
2363 Set_Msg_Str
("type universal real");
2366 elsif Error_Msg_Node_1
= Universal_Integer
then
2367 Set_Msg_Str
("type universal integer");
2370 elsif Error_Msg_Node_1
= Universal_Fixed
then
2371 Set_Msg_Str
("type universal fixed");
2375 -- Special case of anonymous array
2377 if Nkind
(Error_Msg_Node_1
) in N_Entity
2378 and then Is_Array_Type
(Error_Msg_Node_1
)
2379 and then Present
(Related_Array_Object
(Error_Msg_Node_1
))
2381 Set_Msg_Str
("type of ");
2382 Set_Msg_Node
(Related_Array_Object
(Error_Msg_Node_1
));
2383 Set_Msg_Str
(" declared");
2384 Set_Msg_Insertion_Line_Number
2385 (Sloc
(Related_Array_Object
(Error_Msg_Node_1
)), Flag
);
2389 -- If we fall through, it is not a special case, so first output
2390 -- the name of the type, preceded by private for a private type
2392 if Is_Private_Type
(Error_Msg_Node_1
) then
2393 Set_Msg_Str
("private type ");
2395 Set_Msg_Str
("type ");
2398 Ent
:= Error_Msg_Node_1
;
2400 if Is_Internal_Name
(Chars
(Ent
)) then
2401 Unwind_Internal_Type
(Ent
);
2404 -- Types in Standard are displayed as "Standard.name"
2406 if Sloc
(Ent
) <= Standard_Location
then
2408 Set_Msg_Str
("Standard.");
2413 -- Types in other language defined units are displayed as
2414 -- "package-name.type-name"
2417 Is_Predefined_File_Name
(Unit_File_Name
(Get_Source_Unit
(Ent
)))
2419 Get_Unqualified_Decoded_Name_String
2420 (Unit_Name
(Get_Source_Unit
(Ent
)));
2421 Name_Len
:= Name_Len
- 2;
2423 Set_Casing
(Mixed_Case
);
2424 Set_Msg_Name_Buffer
;
2426 Set_Casing
(Mixed_Case
);
2431 -- All other types display as "type name" defined at line xxx
2432 -- possibly qualified if qualification is requested.
2436 Set_Qualification
(Error_Msg_Qual_Level
, Ent
);
2440 -- If Ent is an anonymous subprogram type, there is no name to print,
2441 -- so remove enclosing quotes.
2443 if Buffer_Ends_With
("""") then
2444 Buffer_Remove
("""");
2450 -- If the original type did not come from a predefined file, add the
2451 -- location where the type was defined.
2453 if Sloc
(Error_Msg_Node_1
) > Standard_Location
2455 not Is_Predefined_File_Name
2456 (Unit_File_Name
(Get_Source_Unit
(Error_Msg_Node_1
)))
2458 Set_Msg_Str
(" defined");
2459 Set_Msg_Insertion_Line_Number
(Sloc
(Error_Msg_Node_1
), Flag
);
2461 -- If it did come from a predefined file, deal with the case where
2462 -- this was a file with a generic instantiation from elsewhere.
2465 if Sloc
(Error_Msg_Node_1
) > Standard_Location
then
2467 Iloc
: constant Source_Ptr
:=
2468 Instantiation_Location
(Sloc
(Error_Msg_Node_1
));
2471 if Iloc
/= No_Location
2472 and then not Suppress_Instance_Location
2474 Set_Msg_Str
(" from instance");
2475 Set_Msg_Insertion_Line_Number
(Iloc
, Flag
);
2480 end Set_Msg_Insertion_Type_Reference
;
2482 ---------------------------------
2483 -- Set_Msg_Insertion_Unit_Name --
2484 ---------------------------------
2486 procedure Set_Msg_Insertion_Unit_Name
(Suffix
: Boolean := True) is
2488 if Error_Msg_Unit_1
= No_Unit_Name
then
2491 elsif Error_Msg_Unit_1
= Error_Unit_Name
then
2493 Set_Msg_Str
("<error>");
2496 Get_Unit_Name_String
(Error_Msg_Unit_1
, Suffix
);
2499 Set_Msg_Name_Buffer
;
2503 -- The following assignment ensures that a second percent insertion
2504 -- character will correspond to the Error_Msg_Unit_2 parameter. We
2505 -- suppress possible validity checks in case operating in -gnatVa mode,
2506 -- and Error_Msg_Unit_2 is not needed and has not been set.
2509 pragma Suppress
(Range_Check
);
2511 Error_Msg_Unit_1
:= Error_Msg_Unit_2
;
2513 end Set_Msg_Insertion_Unit_Name
;
2519 procedure Set_Msg_Node
(Node
: Node_Id
) is
2524 case Nkind
(Node
) is
2525 when N_Designator
=>
2526 Set_Msg_Node
(Name
(Node
));
2528 Set_Msg_Node
(Identifier
(Node
));
2531 when N_Defining_Program_Unit_Name
=>
2532 Set_Msg_Node
(Name
(Node
));
2534 Set_Msg_Node
(Defining_Identifier
(Node
));
2537 when N_Selected_Component | N_Expanded_Name
=>
2538 Set_Msg_Node
(Prefix
(Node
));
2540 Set_Msg_Node
(Selector_Name
(Node
));
2547 -- The only remaining possibilities are identifiers, defining
2548 -- identifiers, pragmas, and pragma argument associations.
2550 if Nkind
(Node
) = N_Pragma
then
2551 Nam
:= Pragma_Name
(Node
);
2553 -- The other cases have Chars fields, and we want to test for possible
2554 -- internal names, which generally represent something gone wrong. An
2555 -- exception is the case of internal type names, where we try to find a
2556 -- reasonable external representation for the external name
2558 elsif Is_Internal_Name
(Chars
(Node
))
2560 ((Is_Entity_Name
(Node
)
2561 and then Present
(Entity
(Node
))
2562 and then Is_Type
(Entity
(Node
)))
2564 (Nkind
(Node
) = N_Defining_Identifier
and then Is_Type
(Node
)))
2566 if Nkind
(Node
) = N_Identifier
then
2567 Ent
:= Entity
(Node
);
2572 -- If the type is the designated type of an access_to_subprogram,
2573 -- there is no name to provide in the call.
2575 if Ekind
(Ent
) = E_Subprogram_Type
then
2578 Unwind_Internal_Type
(Ent
);
2582 -- If not internal name, just use name in Chars field
2585 Nam
:= Chars
(Node
);
2588 -- At this stage, the name to output is in Nam
2590 Get_Unqualified_Decoded_Name_String
(Nam
);
2592 -- Remove trailing upper case letters from the name (useful for
2593 -- dealing with some cases of internal names.
2595 while Name_Len
> 1 and then Name_Buffer
(Name_Len
) in 'A' .. 'Z' loop
2596 Name_Len
:= Name_Len
- 1;
2599 -- If we have any of the names from standard that start with the
2600 -- characters "any " (e.g. Any_Type), then kill the message since
2601 -- almost certainly it is a junk cascaded message.
2604 and then Name_Buffer
(1 .. 4) = "any "
2606 Kill_Message
:= True;
2609 -- Now we have to set the proper case. If we have a source location
2610 -- then do a check to see if the name in the source is the same name
2611 -- as the name in the Names table, except for possible differences
2612 -- in case, which is the case when we can copy from the source.
2615 Src_Loc
: constant Source_Ptr
:= Sloc
(Node
);
2616 Sbuffer
: Source_Buffer_Ptr
;
2618 Src_Ptr
: Source_Ptr
;
2624 -- For standard locations, always use mixed case
2626 if Src_Loc
<= No_Location
2627 or else Sloc
(Node
) <= No_Location
2629 Set_Casing
(Mixed_Case
);
2632 -- Determine if the reference we are dealing with corresponds to
2633 -- text at the point of the error reference. This will often be
2634 -- the case for simple identifier references, and is the case
2635 -- where we can copy the spelling from the source.
2637 Sbuffer
:= Source_Text
(Get_Source_File_Index
(Src_Loc
));
2639 while Ref_Ptr
<= Name_Len
loop
2641 Fold_Lower
(Sbuffer
(Src_Ptr
)) /=
2642 Fold_Lower
(Name_Buffer
(Ref_Ptr
));
2643 Ref_Ptr
:= Ref_Ptr
+ 1;
2644 Src_Ptr
:= Src_Ptr
+ 1;
2647 -- If we get through the loop without a mismatch, then output the
2648 -- name the way it is spelled in the source program
2650 if Ref_Ptr
> Name_Len
then
2653 for J
in 1 .. Name_Len
loop
2654 Name_Buffer
(J
) := Sbuffer
(Src_Ptr
);
2655 Src_Ptr
:= Src_Ptr
+ 1;
2658 -- Otherwise set the casing using the default identifier casing
2661 Set_Casing
(Identifier_Casing
(Flag_Source
), Mixed_Case
);
2666 Set_Msg_Name_Buffer
;
2674 procedure Set_Msg_Text
(Text
: String; Flag
: Source_Ptr
) is
2675 C
: Character; -- Current character
2676 P
: Natural; -- Current index;
2678 procedure Set_Msg_Insertion_Warning
;
2679 -- Deal with ? ?? ?x? ?X? insertion sequences
2681 -------------------------------
2682 -- Set_Msg_Insertion_Warning --
2683 -------------------------------
2685 procedure Set_Msg_Insertion_Warning
is
2687 Warning_Msg_Char
:= ' ';
2689 if P
<= Text
'Last and then Text
(P
) = '?' then
2690 if Warning_Doc_Switch
then
2691 Warning_Msg_Char
:= '?';
2696 elsif P
+ 1 <= Text
'Last
2697 and then (Text
(P
) in 'a' .. 'z'
2699 Text
(P
) in 'A' .. 'Z')
2700 and then Text
(P
+ 1) = '?'
2702 if Warning_Doc_Switch
then
2703 Warning_Msg_Char
:= Text
(P
);
2708 end Set_Msg_Insertion_Warning
;
2710 -- Start of processing for Set_Msg_Text
2713 Manual_Quote_Mode
:= False;
2714 Is_Unconditional_Msg
:= False;
2716 Flag_Source
:= Get_Source_File_Index
(Flag
);
2719 while P
<= Text
'Last loop
2723 -- Check for insertion character or sequence
2727 if P
<= Text
'Last and then Text
(P
) = '%' then
2729 Set_Msg_Insertion_Name_Literal
;
2731 Set_Msg_Insertion_Name
;
2735 if P
<= Text
'Last and then Text
(P
) = '$' then
2737 Set_Msg_Insertion_Unit_Name
(Suffix
=> False);
2739 Set_Msg_Insertion_Unit_Name
;
2743 Set_Msg_Insertion_File_Name
;
2746 Set_Msg_Insertion_Type_Reference
(Flag
);
2749 Set_Msg_Insertion_Reserved_Name
;
2752 Set_Msg_Insertion_Node
;
2755 Set_Msg_Insertion_Line_Number
(Error_Msg_Sloc
, Flag
);
2758 Continuation
:= True;
2760 if Text
(P
) = '\' then
2761 Continuation_New_Line
:= True;
2766 Set_Msg_Insertion_Column
;
2769 Set_Msg_Insertion_Run_Time_Name
;
2772 Set_Msg_Insertion_Uint
;
2775 Manual_Quote_Mode
:= not Manual_Quote_Mode
;
2779 Is_Unconditional_Msg
:= True;
2782 Set_Msg_Insertion_Warning
;
2786 -- If tagging of messages is enabled, and this is a warning,
2787 -- then it is treated as being [enabled by default].
2789 if Error_Msg_Warn
and Warning_Doc_Switch
then
2790 Warning_Msg_Char
:= '?';
2794 null; -- already dealt with
2797 Set_Msg_Char
(Text
(P
));
2801 Set_Msg_Str
(Error_Msg_String
(1 .. Error_Msg_Strlen
));
2803 -- Upper case letter
2807 -- Start of reserved word if two or more
2809 if P
<= Text
'Last and then Text
(P
) in 'A' .. 'Z' then
2811 Set_Msg_Insertion_Reserved_Word
(Text
, P
);
2813 -- Single upper case letter is just inserted
2819 -- Normal character with no special treatment
2833 procedure Set_Posted
(N
: Node_Id
) is
2837 if Is_Serious_Error
then
2839 -- We always set Error_Posted on the node itself
2841 Set_Error_Posted
(N
);
2843 -- If it is a subexpression, then set Error_Posted on parents up to
2844 -- and including the first non-subexpression construct. This helps
2845 -- avoid cascaded error messages within a single expression.
2851 Set_Error_Posted
(P
);
2852 exit when Nkind
(P
) not in N_Subexpr
;
2855 -- A special check, if we just posted an error on an attribute
2856 -- definition clause, then also set the entity involved as posted.
2857 -- For example, this stops complaining about the alignment after
2858 -- complaining about the size, which is likely to be useless.
2860 if Nkind
(P
) = N_Attribute_Definition_Clause
then
2861 if Is_Entity_Name
(Name
(P
)) then
2862 Set_Error_Posted
(Entity
(Name
(P
)));
2868 -----------------------
2869 -- Set_Qualification --
2870 -----------------------
2872 procedure Set_Qualification
(N
: Nat
; E
: Entity_Id
) is
2874 if N
/= 0 and then Scope
(E
) /= Standard_Standard
then
2875 Set_Qualification
(N
- 1, Scope
(E
));
2876 Set_Msg_Node
(Scope
(E
));
2879 end Set_Qualification
;
2881 ------------------------
2882 -- Special_Msg_Delete --
2883 ------------------------
2885 -- Is it really right to have all this specialized knowledge in errout?
2887 function Special_Msg_Delete
2889 N
: Node_Or_Entity_Id
;
2890 E
: Node_Or_Entity_Id
) return Boolean
2893 -- Never delete messages in -gnatdO mode
2895 if Debug_Flag_OO
then
2898 -- Processing for "atomic access cannot be guaranteed"
2900 elsif Msg
= "atomic access to & cannot be guaranteed" then
2902 -- When an atomic object refers to a non-atomic type in the same
2903 -- scope, we implicitly make the type atomic. In the non-error case
2904 -- this is surely safe (and in fact prevents an error from occurring
2905 -- if the type is not atomic by default). But if the object cannot be
2906 -- made atomic, then we introduce an extra junk message by this
2907 -- manipulation, which we get rid of here.
2909 -- We identify this case by the fact that it references a type for
2910 -- which Is_Atomic is set, but there is no Atomic pragma setting it.
2913 and then Is_Atomic
(E
)
2914 and then No
(Get_Rep_Pragma
(E
, Name_Atomic
))
2919 -- Processing for "Size too small" messages
2921 elsif Msg
= "size for& too small, minimum allowed is ^" then
2923 -- Suppress "size too small" errors in CodePeer mode and Alfa mode,
2924 -- since pragma Pack is also ignored in these configurations.
2926 if CodePeer_Mode
or Alfa_Mode
then
2929 -- When a size is wrong for a frozen type there is no explicit size
2930 -- clause, and other errors have occurred, suppress the message,
2931 -- since it is likely that this size error is a cascaded result of
2932 -- other errors. The reason we eliminate unfrozen types is that
2933 -- messages issued before the freeze type are for sure OK.
2936 and then Serious_Errors_Detected
> 0
2937 and then Nkind
(N
) /= N_Component_Clause
2938 and then Nkind
(Parent
(N
)) /= N_Component_Clause
2940 No
(Get_Attribute_Definition_Clause
(E
, Attribute_Size
))
2942 No
(Get_Attribute_Definition_Clause
(E
, Attribute_Object_Size
))
2944 No
(Get_Attribute_Definition_Clause
(E
, Attribute_Value_Size
))
2950 -- All special tests complete, so go ahead with message
2953 end Special_Msg_Delete
;
2955 --------------------------
2956 -- Unwind_Internal_Type --
2957 --------------------------
2959 procedure Unwind_Internal_Type
(Ent
: in out Entity_Id
) is
2960 Derived
: Boolean := False;
2962 Old_Ent
: Entity_Id
;
2965 -- Undo placement of a quote, since we will put it back later
2967 Mchar
:= Msg_Buffer
(Msglen
);
2970 Msglen
:= Msglen
- 1;
2973 -- The loop here deals with recursive types, we are trying to find a
2974 -- related entity that is not an implicit type. Note that the check with
2975 -- Old_Ent stops us from getting "stuck". Also, we don't output the
2976 -- "type derived from" message more than once in the case where we climb
2977 -- up multiple levels.
2982 -- Implicit access type, use directly designated type In Ada 2005,
2983 -- the designated type may be an anonymous access to subprogram, in
2984 -- which case we can only point to its definition.
2986 if Is_Access_Type
(Ent
) then
2987 if Ekind
(Ent
) = E_Access_Subprogram_Type
2988 or else Ekind
(Ent
) = E_Anonymous_Access_Subprogram_Type
2989 or else Is_Access_Protected_Subprogram_Type
(Ent
)
2991 Ent
:= Directly_Designated_Type
(Ent
);
2993 if not Comes_From_Source
(Ent
) then
2994 if Buffer_Ends_With
("type ") then
2995 Buffer_Remove
("type ");
2998 if Is_Itype
(Ent
) then
3000 Assoc
: constant Node_Id
:=
3001 Associated_Node_For_Itype
(Ent
);
3004 if Nkind
(Assoc
) in N_Subprogram_Specification
then
3006 -- Anonymous access to subprogram in a signature.
3007 -- Indicate the enclosing subprogram.
3011 (Associated_Node_For_Itype
(Ent
));
3013 ("access to subprogram declared in profile of ");
3016 Set_Msg_Str
("access to subprogram with profile ");
3021 elsif Ekind
(Ent
) = E_Function
then
3022 Set_Msg_Str
("access to function ");
3024 Set_Msg_Str
("access to procedure ");
3029 -- Type is access to object, named or anonymous
3032 Set_Msg_Str
("access to ");
3033 Ent
:= Directly_Designated_Type
(Ent
);
3038 elsif Is_Class_Wide_Type
(Ent
) then
3040 Ent
:= Root_Type
(Ent
);
3042 -- Use base type if this is a subtype
3044 elsif Ent
/= Base_Type
(Ent
) then
3045 Buffer_Remove
("type ");
3047 -- Avoid duplication "subtype of subtype of", and also replace
3048 -- "derived from subtype of" simply by "derived from"
3050 if not Buffer_Ends_With
("subtype of ")
3051 and then not Buffer_Ends_With
("derived from ")
3053 Set_Msg_Str
("subtype of ");
3056 Ent
:= Base_Type
(Ent
);
3058 -- If this is a base type with a first named subtype, use the first
3059 -- named subtype instead. This is not quite accurate in all cases,
3060 -- but it makes too much noise to be accurate and add 'Base in all
3061 -- cases. Note that we only do this is the first named subtype is not
3062 -- itself an internal name. This avoids the obvious loop (subtype ->
3063 -- basetype -> subtype) which would otherwise occur!)
3067 FST
: constant Entity_Id
:= First_Subtype
(Ent
);
3070 if not Is_Internal_Name
(Chars
(FST
)) then
3074 -- Otherwise use root type
3078 Buffer_Remove
("type ");
3080 -- Test for "subtype of type derived from" which seems
3081 -- excessive and is replaced by "type derived from".
3083 Buffer_Remove
("subtype of");
3085 -- Avoid duplicated "type derived from type derived from"
3087 if not Buffer_Ends_With
("type derived from ") then
3088 Set_Msg_Str
("type derived from ");
3099 -- If we are stuck in a loop, get out and settle for the internal
3100 -- name after all. In this case we set to kill the message if it is
3101 -- not the first error message (we really try hard not to show the
3102 -- dirty laundry of the implementation to the poor user!)
3104 if Ent
= Old_Ent
then
3105 Kill_Message
:= True;
3109 -- Get out if we finally found a non-internal name to use
3111 exit Find
when not Is_Internal_Name
(Chars
(Ent
));
3117 end Unwind_Internal_Type
;
3123 procedure VMS_Convert
is
3133 P
:= Msg_Buffer
'First;
3139 if Msg_Buffer
(P
) = '-' then
3140 for G
in Gnames
'Range loop
3141 L
:= Gnames
(G
)'Length;
3143 -- See if we have "-ggg switch", where ggg is Gnames entry
3145 if P
+ L
+ 7 <= Msglen
3146 and then Msg_Buffer
(P
+ 1 .. P
+ L
) = Gnames
(G
).all
3147 and then Msg_Buffer
(P
+ L
+ 1 .. P
+ L
+ 7) = " switch"
3149 -- Replace by "/vvv qualifier", where vvv is Vnames entry
3151 N
:= Vnames
(G
)'Length;
3152 Msg_Buffer
(P
+ N
+ 11 .. Msglen
+ N
- L
+ 3) :=
3153 Msg_Buffer
(P
+ L
+ 8 .. Msglen
);
3154 Msg_Buffer
(P
) := '/';
3155 Msg_Buffer
(P
+ 1 .. P
+ N
) := Vnames
(G
).all;
3156 Msg_Buffer
(P
+ N
+ 1 .. P
+ N
+ 10) := " qualifier";
3158 Msglen
:= Msglen
+ N
- L
+ 3;