1 ------------------------------------------------------------------------------
3 -- GNAT COMPILER COMPONENTS --
9 -- Copyright (C) 1992-2011, 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
147 -- given node to the current message.
149 procedure Set_Msg_Text
(Text
: String; Flag
: Source_Ptr
);
150 -- Add a sequence of characters to the current message. The characters may
151 -- be one of the special insertion characters (see documentation in spec).
152 -- Flag is the location at which the error is to be posted, which is used
153 -- to determine whether or not the # insertion needs a file name. The
154 -- variables Msg_Buffer, Msglen, Is_Style_Msg, Is_Warning_Msg, and
155 -- Is_Unconditional_Msg are set on return.
157 procedure Set_Posted
(N
: Node_Id
);
158 -- Sets the Error_Posted flag on the given node, and all its parents
159 -- that are subexpressions and then on the parent non-subexpression
160 -- construct that contains the original expression (this reduces the
161 -- number of cascaded messages). Note that this call only has an effect
162 -- for a serious error. For a non-serious error, it has no effect.
164 procedure Set_Qualification
(N
: Nat
; E
: Entity_Id
);
165 -- Outputs up to N levels of qualification for the given entity. For
166 -- example, the entity A.B.C.D will output B.C. if N = 2.
168 function Special_Msg_Delete
170 N
: Node_Or_Entity_Id
;
171 E
: Node_Or_Entity_Id
) return Boolean;
172 -- This function is called from Error_Msg_NEL, passing the message Msg,
173 -- node N on which the error is to be posted, and the entity or node E
174 -- to be used for an & insertion in the message if any. The job of this
175 -- procedure is to test for certain cascaded messages that we would like
176 -- to suppress. If the message is to be suppressed then we return True.
177 -- If the message should be generated (the normal case) False is returned.
179 procedure Unwind_Internal_Type
(Ent
: in out Entity_Id
);
180 -- This procedure is given an entity id for an internal type, i.e. a type
181 -- with an internal name. It unwinds the type to try to get to something
182 -- reasonably printable, generating prefixes like "subtype of", "access
183 -- to", etc along the way in the buffer. The value in Ent on return is the
184 -- final name to be printed. Hopefully this is not an internal name, but in
185 -- some internal name cases, it is an internal name, and has to be printed
186 -- anyway (although in this case the message has been killed if possible).
187 -- The global variable Class_Flag is set to True if the resulting entity
188 -- should have 'Class appended to its name (see Add_Class procedure), and
189 -- is otherwise unchanged.
191 procedure VMS_Convert
;
192 -- This procedure has no effect if called when the host is not OpenVMS. If
193 -- the host is indeed OpenVMS, then the error message stored in Msg_Buffer
194 -- is scanned for appearances of switch names which need converting to
195 -- corresponding VMS qualifier names. See Gnames/Vnames table in Errout
196 -- spec for precise definition of the conversion that is performed by this
197 -- routine in OpenVMS mode.
199 -----------------------
200 -- Change_Error_Text --
201 -----------------------
203 procedure Change_Error_Text
(Error_Id
: Error_Msg_Id
; New_Msg
: String) is
204 Save_Next
: Error_Msg_Id
;
205 Err_Id
: Error_Msg_Id
:= Error_Id
;
208 Set_Msg_Text
(New_Msg
, Errors
.Table
(Error_Id
).Sptr
);
209 Errors
.Table
(Error_Id
).Text
:= new String'(Msg_Buffer (1 .. Msglen));
211 -- If in immediate error message mode, output modified error message now
212 -- This is just a bit tricky, because we want to output just a single
213 -- message, and the messages we modified is already linked in. We solve
214 -- this by temporarily resetting its forward pointer to empty.
216 if Debug_Flag_OO then
217 Save_Next := Errors.Table (Error_Id).Next;
218 Errors.Table (Error_Id).Next := No_Error_Msg;
221 (Errors.Table (Error_Id).Line, Errors.Table (Error_Id).Sfile, True);
222 Output_Error_Msgs (Err_Id);
223 Errors.Table (Error_Id).Next := Save_Next;
225 end Change_Error_Text;
227 ------------------------
228 -- Compilation_Errors --
229 ------------------------
231 function Compilation_Errors return Boolean is
233 if not Finalize_Called then
236 return Erroutc.Compilation_Errors;
238 end Compilation_Errors;
244 -- Error_Msg posts a flag at the given location, except that if the
245 -- Flag_Location points within a generic template and corresponds to an
246 -- instantiation of this generic template, then the actual message will be
247 -- posted on the generic instantiation, along with additional messages
248 -- referencing the generic declaration.
250 procedure Error_Msg (Msg : String; Flag_Location : Source_Ptr) is
251 Sindex : Source_File_Index;
252 -- Source index for flag location
254 Orig_Loc : Source_Ptr;
255 -- Original location of Flag_Location (i.e. location in original
256 -- template in instantiation case, otherwise unchanged).
259 -- It is a fatal error to issue an error message when scanning from the
260 -- internal source buffer (see Sinput for further documentation)
262 pragma Assert (Sinput.Source /= Internal_Source_Ptr);
264 -- Return if all errors are to be ignored
266 if Errors_Must_Be_Ignored then
270 -- If we already have messages, and we are trying to place a message at
271 -- No_Location or in package Standard, then just ignore the attempt
272 -- since we assume that what is happening is some cascaded junk. Note
273 -- that this is safe in the sense that proceeding will surely bomb.
275 if Flag_Location < First_Source_Ptr
276 and then Total_Errors_Detected > 0
281 -- Start of processing for new message
283 Sindex := Get_Source_File_Index (Flag_Location);
284 Test_Style_Warning_Serious_Msg (Msg);
285 Orig_Loc := Original_Location (Flag_Location);
287 -- If the current location is in an instantiation, the issue arises of
288 -- whether to post the message on the template or the instantiation.
290 -- The way we decide is to see if we have posted the same message on
291 -- the template when we compiled the template (the template is always
292 -- compiled before any instantiations). For this purpose, we use a
293 -- separate table of messages. The reason we do this is twofold:
295 -- First, the messages can get changed by various processing
296 -- including the insertion of tokens etc, making it hard to
297 -- do the comparison.
299 -- Second, we will suppress a warning on a template if it is not in
300 -- the current extended source unit. That's reasonable and means we
301 -- don't want the warning on the instantiation here either, but it
302 -- does mean that the main error table would not in any case include
305 if Flag_Location = Orig_Loc then
306 Non_Instance_Msgs.Append ((new String'(Msg
), Flag_Location
));
307 Warn_On_Instance
:= False;
309 -- Here we have an instance message
312 -- Delete if debug flag off, and this message duplicates a message
313 -- already posted on the corresponding template
315 if not Debug_Flag_GG
then
316 for J
in Non_Instance_Msgs
.First
.. Non_Instance_Msgs
.Last
loop
317 if Msg
= Non_Instance_Msgs
.Table
(J
).Msg
.all
318 and then Non_Instance_Msgs
.Table
(J
).Loc
= Orig_Loc
325 -- No duplicate, so error/warning will be posted on instance
327 Warn_On_Instance
:= Is_Warning_Msg
;
330 -- Ignore warning message that is suppressed for this location. Note
331 -- that style checks are not considered warning messages for this
334 if Is_Warning_Msg
and then Warnings_Suppressed
(Orig_Loc
) then
337 -- For style messages, check too many messages so far
340 and then Maximum_Messages
/= 0
341 and then Warnings_Detected
>= Maximum_Messages
346 -- The idea at this stage is that we have two kinds of messages
348 -- First, we have those messages that are to be placed as requested at
349 -- Flag_Location. This includes messages that have nothing to do with
350 -- generics, and also messages placed on generic templates that reflect
351 -- an error in the template itself. For such messages we simply call
352 -- Error_Msg_Internal to place the message in the requested location.
354 if Instantiation
(Sindex
) = No_Location
then
355 Error_Msg_Internal
(Msg
, Flag_Location
, Flag_Location
, False);
359 -- If we are trying to flag an error in an instantiation, we may have
360 -- a generic contract violation. What we generate in this case is:
362 -- instantiation error at ...
363 -- original error message
367 -- warning: in instantiation at
368 -- warning: original warning message
370 -- All these messages are posted at the location of the top level
371 -- instantiation. If there are nested instantiations, then the
372 -- instantiation error message can be repeated, pointing to each
373 -- of the relevant instantiations.
375 -- Note: the instantiation mechanism is also shared for inlining of
376 -- subprogram bodies when front end inlining is done. In this case the
377 -- messages have the form:
379 -- in inlined body at ...
380 -- original error message
384 -- warning: in inlined body at
385 -- warning: original warning message
387 -- OK, here we have an instantiation error, and we need to generate the
388 -- error on the instantiation, rather than on the template.
391 Actual_Error_Loc
: Source_Ptr
;
392 -- Location of outer level instantiation in instantiation case, or
393 -- just a copy of Flag_Location in the normal case. This is the
394 -- location where all error messages will actually be posted.
396 Save_Error_Msg_Sloc
: constant Source_Ptr
:= Error_Msg_Sloc
;
397 -- Save possible location set for caller's message. We need to use
398 -- Error_Msg_Sloc for the location of the instantiation error but we
399 -- have to preserve a possible original value.
401 X
: Source_File_Index
;
403 Msg_Cont_Status
: Boolean;
404 -- Used to label continuation lines in instantiation case with
405 -- proper Msg_Cont status.
408 -- Loop to find highest level instantiation, where all error
409 -- messages will be placed.
413 Actual_Error_Loc
:= Instantiation
(X
);
414 X
:= Get_Source_File_Index
(Actual_Error_Loc
);
415 exit when Instantiation
(X
) = No_Location
;
418 -- Since we are generating the messages at the instantiation point in
419 -- any case, we do not want the references to the bad lines in the
420 -- instance to be annotated with the location of the instantiation.
422 Suppress_Instance_Location
:= True;
423 Msg_Cont_Status
:= False;
425 -- Loop to generate instantiation messages
427 Error_Msg_Sloc
:= Flag_Location
;
428 X
:= Get_Source_File_Index
(Flag_Location
);
429 while Instantiation
(X
) /= No_Location
loop
431 -- Suppress instantiation message on continuation lines
433 if Msg
(Msg
'First) /= '\' then
435 -- Case of inlined body
437 if Inlined_Body
(X
) then
438 if Is_Warning_Msg
or else Is_Style_Msg
then
440 ("?in inlined body #",
441 Actual_Error_Loc
, Flag_Location
, Msg_Cont_Status
);
445 ("error in inlined body #",
446 Actual_Error_Loc
, Flag_Location
, Msg_Cont_Status
);
449 -- Case of generic instantiation
452 if Is_Warning_Msg
or else Is_Style_Msg
then
454 ("?in instantiation #",
455 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
825 and then Continuation
827 Cur_Msg
:= Errors
.Last
;
830 Oldm
: String_Ptr
:= Errors
.Table
(Cur_Msg
).Text
;
831 Newm
: String (1 .. Oldm
'Last + 2 + Msglen
);
836 -- First copy old message to new one and free it
838 Newm
(Oldm
'Range) := Oldm
.all;
842 -- Remove (style) or info: at start of message
844 if Msglen
> 8 and then Msg_Buffer
(1 .. 8) = "(style) " then
847 elsif Msglen
> 6 and then Msg_Buffer
(1 .. 6) = "info: " then
854 -- Now deal with separation between messages. Normally this is
855 -- simply comma space, but there are some special cases.
857 -- If continuation new line, then put actual NL character in msg
859 if Continuation_New_Line
then
861 Newm
(Newl
) := ASCII
.LF
;
863 -- If continuation message is enclosed in parentheses, then
864 -- special treatment (don't need a comma, and we want to combine
865 -- successive parenthetical remarks into a single one with
866 -- separating commas).
868 elsif Msg_Buffer
(M
) = '(' and then Msg_Buffer
(Msglen
) = ')' then
870 -- Case where existing message ends in right paren, remove
871 -- and separate parenthetical remarks with a comma.
873 if Newm
(Newl
) = ')' then
875 Msg_Buffer
(M
) := ' ';
877 -- Case where we are adding new parenthetical comment
884 -- Case where continuation not in parens and no new line
887 Newm
(Newl
+ 1 .. Newl
+ 2) := ", ";
891 -- Append new message
893 Newm
(Newl
+ 1 .. Newl
+ Msglen
- M
+ 1) :=
894 Msg_Buffer
(M
.. Msglen
);
895 Newl
:= Newl
+ Msglen
- M
+ 1;
896 Errors
.Table
(Cur_Msg
).Text
:= new String'(Newm (1 .. Newl));
902 -- Otherwise build error message object for new message
905 ((Text => new String'(Msg_Buffer
(1 .. Msglen
)),
906 Next
=> No_Error_Msg
,
907 Prev
=> No_Error_Msg
,
910 Sfile
=> Get_Source_File_Index
(Sptr
),
911 Line
=> Get_Physical_Line_Number
(Sptr
),
912 Col
=> Get_Column_Number
(Sptr
),
913 Warn
=> Is_Warning_Msg
,
914 Style
=> Is_Style_Msg
,
915 Serious
=> Is_Serious_Error
,
916 Uncond
=> Is_Unconditional_Msg
,
917 Msg_Cont
=> Continuation
,
919 Cur_Msg
:= Errors
.Last
;
921 -- If immediate errors mode set, output error message now. Also output
922 -- now if the -d1 debug flag is set (so node number message comes out
923 -- just before actual error message)
925 if Debug_Flag_OO
or else Debug_Flag_1
then
928 (Errors
.Table
(Cur_Msg
).Line
, Errors
.Table
(Cur_Msg
).Sfile
, True);
930 Output_Error_Msgs
(Temp_Msg
);
932 -- If not in immediate errors mode, then we insert the message in the
933 -- error chain for later output by Finalize. The messages are sorted
934 -- first by unit (main unit comes first), and within a unit by source
935 -- location (earlier flag location first in the chain).
938 -- First a quick check, does this belong at the very end of the chain
939 -- of error messages. This saves a lot of time in the normal case if
940 -- there are lots of messages.
942 if Last_Error_Msg
/= No_Error_Msg
943 and then Errors
.Table
(Cur_Msg
).Sfile
=
944 Errors
.Table
(Last_Error_Msg
).Sfile
945 and then (Sptr
> Errors
.Table
(Last_Error_Msg
).Sptr
947 (Sptr
= Errors
.Table
(Last_Error_Msg
).Sptr
949 Optr
> Errors
.Table
(Last_Error_Msg
).Optr
))
951 Prev_Msg
:= Last_Error_Msg
;
952 Next_Msg
:= No_Error_Msg
;
954 -- Otherwise do a full sequential search for the insertion point
957 Prev_Msg
:= No_Error_Msg
;
958 Next_Msg
:= First_Error_Msg
;
959 while Next_Msg
/= No_Error_Msg
loop
961 Errors
.Table
(Cur_Msg
).Sfile
< Errors
.Table
(Next_Msg
).Sfile
;
963 if Errors
.Table
(Cur_Msg
).Sfile
=
964 Errors
.Table
(Next_Msg
).Sfile
966 exit when Sptr
< Errors
.Table
(Next_Msg
).Sptr
968 (Sptr
= Errors
.Table
(Next_Msg
).Sptr
970 Optr
< Errors
.Table
(Next_Msg
).Optr
);
973 Prev_Msg
:= Next_Msg
;
974 Next_Msg
:= Errors
.Table
(Next_Msg
).Next
;
978 -- Now we insert the new message in the error chain. The insertion
979 -- point for the message is after Prev_Msg and before Next_Msg.
981 -- The possible insertion point for the new message is after Prev_Msg
982 -- and before Next_Msg. However, this is where we do a special check
983 -- for redundant parsing messages, defined as messages posted on the
984 -- same line. The idea here is that probably such messages are junk
985 -- from the parser recovering. In full errors mode, we don't do this
986 -- deletion, but otherwise such messages are discarded at this stage.
988 if Prev_Msg
/= No_Error_Msg
989 and then Errors
.Table
(Prev_Msg
).Line
=
990 Errors
.Table
(Cur_Msg
).Line
991 and then Errors
.Table
(Prev_Msg
).Sfile
=
992 Errors
.Table
(Cur_Msg
).Sfile
993 and then Compiler_State
= Parsing
994 and then not All_Errors_Mode
996 -- Don't delete unconditional messages and at this stage, don't
997 -- delete continuation lines (we attempted to delete those earlier
998 -- if the parent message was deleted.
1000 if not Errors
.Table
(Cur_Msg
).Uncond
1001 and then not Continuation
1003 -- Don't delete if prev msg is warning and new msg is an error.
1004 -- This is because we don't want a real error masked by a
1005 -- warning. In all other cases (that is parse errors for the
1006 -- same line that are not unconditional) we do delete the
1007 -- message. This helps to avoid junk extra messages from
1008 -- cascaded parsing errors
1010 if not (Errors
.Table
(Prev_Msg
).Warn
1012 Errors
.Table
(Prev_Msg
).Style
)
1014 (Errors
.Table
(Cur_Msg
).Warn
1016 Errors
.Table
(Cur_Msg
).Style
)
1018 -- All tests passed, delete the message by simply returning
1019 -- without any further processing.
1021 if not Continuation
then
1022 Last_Killed
:= True;
1030 -- Come here if message is to be inserted in the error chain
1032 if not Continuation
then
1033 Last_Killed
:= False;
1036 if Prev_Msg
= No_Error_Msg
then
1037 First_Error_Msg
:= Cur_Msg
;
1039 Errors
.Table
(Prev_Msg
).Next
:= Cur_Msg
;
1042 Errors
.Table
(Cur_Msg
).Next
:= Next_Msg
;
1044 if Next_Msg
= No_Error_Msg
then
1045 Last_Error_Msg
:= Cur_Msg
;
1049 -- Bump appropriate statistics count
1051 if Errors
.Table
(Cur_Msg
).Warn
or else Errors
.Table
(Cur_Msg
).Style
then
1052 Warnings_Detected
:= Warnings_Detected
+ 1;
1055 Total_Errors_Detected
:= Total_Errors_Detected
+ 1;
1057 if Errors
.Table
(Cur_Msg
).Serious
then
1058 Serious_Errors_Detected
:= Serious_Errors_Detected
+ 1;
1059 Handle_Serious_Error
;
1063 -- If too many warnings turn off warnings
1065 if Maximum_Messages
/= 0 then
1066 if Warnings_Detected
= Maximum_Messages
then
1067 Warning_Mode
:= Suppress
;
1070 -- If too many errors abandon compilation
1072 if Total_Errors_Detected
= Maximum_Messages
then
1073 raise Unrecoverable_Error
;
1076 end Error_Msg_Internal
;
1082 procedure Error_Msg_N
(Msg
: String; N
: Node_Or_Entity_Id
) is
1084 Error_Msg_NEL
(Msg
, N
, N
, Sloc
(N
));
1091 procedure Error_Msg_NE
1093 N
: Node_Or_Entity_Id
;
1094 E
: Node_Or_Entity_Id
)
1097 Error_Msg_NEL
(Msg
, N
, E
, Sloc
(N
));
1104 procedure Error_Msg_NEL
1106 N
: Node_Or_Entity_Id
;
1107 E
: Node_Or_Entity_Id
;
1108 Flag_Location
: Source_Ptr
)
1111 if Special_Msg_Delete
(Msg
, N
, E
) then
1115 Test_Style_Warning_Serious_Msg
(Msg
);
1117 -- Special handling for warning messages
1119 if Is_Warning_Msg
then
1121 -- Suppress if no warnings set for either entity or node
1123 if No_Warnings
(N
) or else No_Warnings
(E
) then
1125 -- Disable any continuation messages as well
1127 Last_Killed
:= True;
1131 -- Suppress if inside loop that is known to be null or is probably
1132 -- null (case where loop executes only if invalid values present).
1133 -- In either case warnings in the loop are likely to be junk.
1140 while Present
(P
) loop
1141 if Nkind
(P
) = N_Loop_Statement
1142 and then Suppress_Loop_Warnings
(P
)
1152 -- Test for message to be output
1155 or else Msg
(Msg
'Last) = '!'
1156 or else Is_Warning_Msg
1158 or else (Msg
(Msg
'First) = '\' and then not Last_Killed
)
1161 Error_Msg_Node_1
:= E
;
1162 Error_Msg
(Msg
, Flag_Location
);
1165 Last_Killed
:= True;
1168 if not (Is_Warning_Msg
or Is_Style_Msg
) then
1177 procedure Error_Msg_NW
1180 N
: Node_Or_Entity_Id
)
1184 and then In_Extended_Main_Source_Unit
(N
)
1185 and then Comes_From_Source
(N
)
1187 Error_Msg_NEL
(Msg
, N
, N
, Sloc
(N
));
1195 procedure Error_Msg_S
(Msg
: String) is
1197 Error_Msg
(Msg
, Scan_Ptr
);
1204 procedure Error_Msg_SC
(Msg
: String) is
1206 -- If we are at end of file, post the flag after the previous token
1208 if Token
= Tok_EOF
then
1211 -- For all other cases the message is posted at the current token
1215 Error_Msg
(Msg
, Token_Ptr
);
1223 procedure Error_Msg_SP
(Msg
: String) is
1225 -- Note: in the case where there is no previous token, Prev_Token_Ptr
1226 -- is set to Source_First, which is a reasonable position for the
1227 -- error flag in this situation
1229 Error_Msg
(Msg
, Prev_Token_Ptr
);
1236 procedure Finalize
(Last_Call
: Boolean) is
1241 procedure Delete_Warning
(E
: Error_Msg_Id
);
1242 -- Delete a message if not already deleted and adjust warning count
1244 --------------------
1245 -- Delete_Warning --
1246 --------------------
1248 procedure Delete_Warning
(E
: Error_Msg_Id
) is
1250 if not Errors
.Table
(E
).Deleted
then
1251 Errors
.Table
(E
).Deleted
:= True;
1252 Warnings_Detected
:= Warnings_Detected
- 1;
1256 -- Start of message for Finalize
1259 -- Set Prev pointers
1261 Cur
:= First_Error_Msg
;
1262 while Cur
/= No_Error_Msg
loop
1263 Nxt
:= Errors
.Table
(Cur
).Next
;
1264 exit when Nxt
= No_Error_Msg
;
1265 Errors
.Table
(Nxt
).Prev
:= Cur
;
1269 -- Eliminate any duplicated error messages from the list. This is
1270 -- done after the fact to avoid problems with Change_Error_Text.
1272 Cur
:= First_Error_Msg
;
1273 while Cur
/= No_Error_Msg
loop
1274 Nxt
:= Errors
.Table
(Cur
).Next
;
1277 while F
/= No_Error_Msg
1278 and then Errors
.Table
(F
).Sptr
= Errors
.Table
(Cur
).Sptr
1280 Check_Duplicate_Message
(Cur
, F
);
1281 F
:= Errors
.Table
(F
).Next
;
1287 -- Mark any messages suppressed by specific warnings as Deleted
1289 Cur
:= First_Error_Msg
;
1290 while Cur
/= No_Error_Msg
loop
1291 if not Errors
.Table
(Cur
).Deleted
1292 and then Warning_Specifically_Suppressed
1293 (Errors
.Table
(Cur
).Sptr
, Errors
.Table
(Cur
).Text
)
1295 Delete_Warning
(Cur
);
1297 -- If this is a continuation, delete previous messages
1300 while Errors
.Table
(F
).Msg_Cont
loop
1301 F
:= Errors
.Table
(F
).Prev
;
1305 -- Delete any following continuations
1309 F
:= Errors
.Table
(F
).Next
;
1310 exit when F
= No_Error_Msg
;
1311 exit when not Errors
.Table
(F
).Msg_Cont
;
1316 Cur
:= Errors
.Table
(Cur
).Next
;
1319 Finalize_Called
:= True;
1321 -- Check consistency of specific warnings (may add warnings). We only
1322 -- do this on the last call, after all possible warnings are posted.
1325 Validate_Specific_Warnings
(Error_Msg
'Access);
1333 function First_Node
(C
: Node_Id
) return Node_Id
is
1334 Orig
: constant Node_Id
:= Original_Node
(C
);
1335 Loc
: constant Source_Ptr
:= Sloc
(Orig
);
1336 Sfile
: constant Source_File_Index
:= Get_Source_File_Index
(Loc
);
1340 function Test_Earlier
(N
: Node_Id
) return Traverse_Result
;
1341 -- Function applied to every node in the construct
1343 procedure Search_Tree_First
is new Traverse_Proc
(Test_Earlier
);
1344 -- Create traversal procedure
1350 function Test_Earlier
(N
: Node_Id
) return Traverse_Result
is
1351 Norig
: constant Node_Id
:= Original_Node
(N
);
1352 Loc
: constant Source_Ptr
:= Sloc
(Norig
);
1355 -- Check for earlier
1359 -- Ignore nodes with no useful location information
1361 and then Loc
/= Standard_Location
1362 and then Loc
/= No_Location
1364 -- Ignore nodes from a different file. This ensures against cases
1365 -- of strange foreign code somehow being present. We don't want
1366 -- wild placement of messages if that happens.
1368 and then Get_Source_File_Index
(Loc
) = Sfile
1377 -- Start of processing for First_Node
1380 if Nkind
(Orig
) in N_Subexpr
then
1383 Search_Tree_First
(Orig
);
1395 function First_Sloc
(N
: Node_Id
) return Source_Ptr
is
1396 SI
: constant Source_File_Index
:= Source_Index
(Get_Source_Unit
(N
));
1397 SF
: constant Source_Ptr
:= Source_First
(SI
);
1402 F
:= First_Node
(N
);
1405 -- The following circuit is a bit subtle. When we have parenthesized
1406 -- expressions, then the Sloc will not record the location of the paren,
1407 -- but we would like to post the flag on the paren. So what we do is to
1408 -- crawl up the tree from the First_Node, adjusting the Sloc value for
1409 -- any parentheses we know are present. Yes, we know this circuit is not
1410 -- 100% reliable (e.g. because we don't record all possible paren level
1411 -- values), but this is only for an error message so it is good enough.
1414 Paren_Loop
: for J
in 1 .. Paren_Count
(F
) loop
1416 -- We don't look more than 12 characters behind the current
1417 -- location, and in any case not past the front of the source.
1419 Search_Loop
: for K
in 1 .. 12 loop
1420 exit Search_Loop
when S
= SF
;
1422 if Source_Text
(SI
) (S
- 1) = '(' then
1426 elsif Source_Text
(SI
) (S
- 1) <= ' ' then
1432 end loop Search_Loop
;
1433 end loop Paren_Loop
;
1435 exit Node_Loop
when F
= N
;
1437 exit Node_Loop
when Nkind
(F
) not in N_Subexpr
;
1447 procedure Initialize
is
1450 First_Error_Msg
:= No_Error_Msg
;
1451 Last_Error_Msg
:= No_Error_Msg
;
1452 Serious_Errors_Detected
:= 0;
1453 Total_Errors_Detected
:= 0;
1454 Warnings_Detected
:= 0;
1455 Cur_Msg
:= No_Error_Msg
;
1458 -- Initialize warnings table, if all warnings are suppressed, supply an
1459 -- initial dummy entry covering all possible source locations.
1462 Specific_Warnings
.Init
;
1464 if Warning_Mode
= Suppress
then
1466 ((Start
=> Source_Ptr
'First, Stop
=> Source_Ptr
'Last));
1474 function No_Warnings
(N
: Node_Or_Entity_Id
) return Boolean is
1476 if Error_Posted
(N
) then
1479 elsif Nkind
(N
) in N_Entity
and then Has_Warnings_Off
(N
) then
1482 elsif Is_Entity_Name
(N
)
1483 and then Present
(Entity
(N
))
1484 and then Has_Warnings_Off
(Entity
(N
))
1497 function OK_Node
(N
: Node_Id
) return Boolean is
1498 K
: constant Node_Kind
:= Nkind
(N
);
1501 if Error_Posted
(N
) then
1504 elsif K
in N_Has_Etype
1505 and then Present
(Etype
(N
))
1506 and then Error_Posted
(Etype
(N
))
1511 or else K
= N_Attribute_Reference
1512 or else K
= N_Character_Literal
1513 or else K
= N_Expanded_Name
1514 or else K
= N_Identifier
1515 or else K
= N_Operator_Symbol
)
1516 and then Present
(Entity
(N
))
1517 and then Error_Posted
(Entity
(N
))
1525 ---------------------
1526 -- Output_Messages --
1527 ---------------------
1529 procedure Output_Messages
is
1533 procedure Write_Error_Summary
;
1534 -- Write error summary
1536 procedure Write_Header
(Sfile
: Source_File_Index
);
1537 -- Write header line (compiling or checking given file)
1539 procedure Write_Max_Errors
;
1540 -- Write message if max errors reached
1542 -------------------------
1543 -- Write_Error_Summary --
1544 -------------------------
1546 procedure Write_Error_Summary
is
1548 -- Extra blank line if error messages or source listing were output
1550 if Total_Errors_Detected
+ Warnings_Detected
> 0
1556 -- Message giving number of lines read and number of errors detected.
1557 -- This normally goes to Standard_Output. The exception is when brief
1558 -- mode is not set, verbose mode (or full list mode) is set, and
1559 -- there are errors. In this case we send the message to standard
1560 -- error to make sure that *something* appears on standard error in
1561 -- an error situation.
1563 -- Formerly, only the "# errors" suffix was sent to stderr, whereas
1564 -- "# lines:" appeared on stdout. This caused problems on VMS when
1565 -- the stdout buffer was flushed, giving an extra line feed after
1568 if Total_Errors_Detected
+ Warnings_Detected
/= 0
1569 and then not Brief_Output
1570 and then (Verbose_Mode
or Full_List
)
1575 -- Message giving total number of lines
1578 Write_Int
(Num_Source_Lines
(Main_Source_File
));
1580 if Num_Source_Lines
(Main_Source_File
) = 1 then
1581 Write_Str
(" line: ");
1583 Write_Str
(" lines: ");
1586 if Total_Errors_Detected
= 0 then
1587 Write_Str
("No errors");
1589 elsif Total_Errors_Detected
= 1 then
1590 Write_Str
("1 error");
1593 Write_Int
(Total_Errors_Detected
);
1594 Write_Str
(" errors");
1597 if Warnings_Detected
/= 0 then
1599 Write_Int
(Warnings_Detected
);
1600 Write_Str
(" warning");
1602 if Warnings_Detected
/= 1 then
1606 if Warning_Mode
= Treat_As_Error
then
1607 Write_Str
(" (treated as error");
1609 if Warnings_Detected
/= 1 then
1618 Set_Standard_Output
;
1619 end Write_Error_Summary
;
1625 procedure Write_Header
(Sfile
: Source_File_Index
) is
1627 if Verbose_Mode
or Full_List
then
1628 if Original_Operating_Mode
= Generate_Code
then
1629 Write_Str
("Compiling: ");
1631 Write_Str
("Checking: ");
1634 Write_Name
(Full_File_Name
(Sfile
));
1636 if not Debug_Flag_7
then
1637 Write_Str
(" (source file time stamp: ");
1638 Write_Time_Stamp
(Sfile
);
1646 ----------------------
1647 -- Write_Max_Errors --
1648 ----------------------
1650 procedure Write_Max_Errors
is
1652 if Maximum_Messages
/= 0 then
1653 if Warnings_Detected
>= Maximum_Messages
then
1655 Write_Line
("maximum number of warnings output");
1656 Write_Line
("any further warnings suppressed");
1657 Set_Standard_Output
;
1660 -- If too many errors print message
1662 if Total_Errors_Detected
>= Maximum_Messages
then
1664 Write_Line
("fatal error: maximum number of errors detected");
1665 Set_Standard_Output
;
1668 end Write_Max_Errors
;
1670 -- Start of processing for Output_Messages
1673 -- Error if Finalize has not been called
1675 if not Finalize_Called
then
1676 raise Program_Error
;
1679 -- Reset current error source file if the main unit has a pragma
1680 -- Source_Reference. This ensures outputting the proper name of
1681 -- the source file in this situation.
1683 if Main_Source_File
= No_Source_File
1684 or else Num_SRef_Pragmas
(Main_Source_File
) /= 0
1686 Current_Error_Source_File
:= No_Source_File
;
1691 if Brief_Output
or (not Full_List
and not Verbose_Mode
) then
1694 E
:= First_Error_Msg
;
1695 while E
/= No_Error_Msg
loop
1696 if not Errors
.Table
(E
).Deleted
and then not Debug_Flag_KK
then
1697 if Full_Path_Name_For_Brief_Errors
then
1698 Write_Name
(Full_Ref_Name
(Errors
.Table
(E
).Sfile
));
1700 Write_Name
(Reference_Name
(Errors
.Table
(E
).Sfile
));
1704 Write_Int
(Int
(Physical_To_Logical
1705 (Errors
.Table
(E
).Line
,
1706 Errors
.Table
(E
).Sfile
)));
1709 if Errors
.Table
(E
).Col
< 10 then
1713 Write_Int
(Int
(Errors
.Table
(E
).Col
));
1715 Output_Msg_Text
(E
);
1719 E
:= Errors
.Table
(E
).Next
;
1722 Set_Standard_Output
;
1725 -- Full source listing case
1728 List_Pragmas_Index
:= 1;
1729 List_Pragmas_Mode
:= True;
1730 E
:= First_Error_Msg
;
1732 -- Normal case, to stdout (copyright notice already output)
1734 if Full_List_File_Name
= null then
1735 if not Debug_Flag_7
then
1742 Create_List_File_Access
.all (Full_List_File_Name
.all);
1743 Set_Special_Output
(Write_List_Info_Access
.all'Access);
1745 -- Write copyright notice to file
1747 if not Debug_Flag_7
then
1748 Write_Str
("GNAT ");
1749 Write_Str
(Gnat_Version_String
);
1751 Write_Str
("Copyright 1992-" &
1753 ", Free Software Foundation, Inc.");
1758 -- First list extended main source file units with errors
1760 for U
in Main_Unit
.. Last_Unit
loop
1761 if In_Extended_Main_Source_Unit
(Cunit_Entity
(U
))
1763 -- If debug flag d.m is set, only the main source is listed
1765 and then (U
= Main_Unit
or else not Debug_Flag_Dot_M
)
1767 -- If the unit of the entity does not come from source, it is
1768 -- an implicit subprogram declaration for a child subprogram.
1769 -- Do not emit errors for it, they are listed with the body.
1772 (No
(Cunit_Entity
(U
))
1773 or else Comes_From_Source
(Cunit_Entity
(U
))
1774 or else not Is_Subprogram
(Cunit_Entity
(U
)))
1777 Sfile
: constant Source_File_Index
:= Source_Index
(U
);
1781 Write_Header
(Sfile
);
1784 -- Normally, we don't want an "error messages from file"
1785 -- message when listing the entire file, so we set the
1786 -- current source file as the current error source file.
1787 -- However, the old style of doing things was to list this
1788 -- message if pragma Source_Reference is present, even for
1789 -- the main unit. Since the purpose of the -gnatd.m switch
1790 -- is to duplicate the old behavior, we skip the reset if
1791 -- this debug flag is set.
1793 if not Debug_Flag_Dot_M
then
1794 Current_Error_Source_File
:= Sfile
;
1797 for N
in 1 .. Last_Source_Line
(Sfile
) loop
1798 while E
/= No_Error_Msg
1799 and then Errors
.Table
(E
).Deleted
1801 E
:= Errors
.Table
(E
).Next
;
1806 and then Errors
.Table
(E
).Line
= N
1807 and then Errors
.Table
(E
).Sfile
= Sfile
;
1809 Output_Source_Line
(N
, Sfile
, Err_Flag
);
1812 Output_Error_Msgs
(E
);
1814 if not Debug_Flag_2
then
1823 -- Then output errors, if any, for subsidiary units not in the
1824 -- main extended unit.
1826 -- Note: if debug flag d.m set, include errors for any units other
1827 -- than the main unit in the extended source unit (e.g. spec and
1828 -- subunits for a body).
1830 while E
/= No_Error_Msg
1831 and then (not In_Extended_Main_Source_Unit
(Errors
.Table
(E
).Sptr
)
1834 and then Get_Source_Unit
1835 (Errors
.Table
(E
).Sptr
) /= Main_Unit
))
1837 if Errors
.Table
(E
).Deleted
then
1838 E
:= Errors
.Table
(E
).Next
;
1843 (Errors
.Table
(E
).Line
, Errors
.Table
(E
).Sfile
, True);
1844 Output_Error_Msgs
(E
);
1848 -- If output to file, write extra copy of error summary to the
1849 -- output file, and then close it.
1851 if Full_List_File_Name
/= null then
1852 Write_Error_Summary
;
1854 Close_List_File_Access
.all;
1855 Cancel_Special_Output
;
1859 -- Verbose mode (error lines only with error flags). Normally this is
1860 -- ignored in full list mode, unless we are listing to a file, in which
1861 -- case we still generate -gnatv output to standard output.
1864 and then (not Full_List
or else Full_List_File_Name
/= null)
1867 Write_Header
(Main_Source_File
);
1868 E
:= First_Error_Msg
;
1870 -- Loop through error lines
1872 while E
/= No_Error_Msg
loop
1873 if Errors
.Table
(E
).Deleted
then
1874 E
:= Errors
.Table
(E
).Next
;
1878 (Errors
.Table
(E
).Line
, Errors
.Table
(E
).Sfile
, True);
1879 Output_Error_Msgs
(E
);
1884 -- Output error summary if verbose or full list mode
1886 if Verbose_Mode
or else Full_List
then
1887 Write_Error_Summary
;
1892 if Warning_Mode
= Treat_As_Error
then
1893 Total_Errors_Detected
:= Total_Errors_Detected
+ Warnings_Detected
;
1894 Warnings_Detected
:= 0;
1896 end Output_Messages
;
1898 ------------------------
1899 -- Output_Source_Line --
1900 ------------------------
1902 procedure Output_Source_Line
1903 (L
: Physical_Line_Number
;
1904 Sfile
: Source_File_Index
;
1910 Line_Number_Output
: Boolean := False;
1911 -- Set True once line number is output
1913 Empty_Line
: Boolean := True;
1914 -- Set False if line includes at least one character
1917 if Sfile
/= Current_Error_Source_File
then
1918 Write_Str
("==============Error messages for ");
1920 case Sinput
.File_Type
(Sfile
) is
1922 Write_Str
("source");
1924 when Sinput
.Config
=>
1925 Write_Str
("configuration pragmas");
1928 Write_Str
("symbol definition");
1930 when Sinput
.Preproc
=>
1931 Write_Str
("preprocessing data");
1934 Write_Str
(" file: ");
1935 Write_Name
(Full_File_Name
(Sfile
));
1938 if Num_SRef_Pragmas
(Sfile
) > 0 then
1939 Write_Str
("--------------Line numbers from file: ");
1940 Write_Name
(Full_Ref_Name
(Sfile
));
1941 Write_Str
(" (starting at line ");
1942 Write_Int
(Int
(First_Mapped_Line
(Sfile
)));
1947 Current_Error_Source_File
:= Sfile
;
1950 if Errs
or List_Pragmas_Mode
then
1951 Output_Line_Number
(Physical_To_Logical
(L
, Sfile
));
1952 Line_Number_Output
:= True;
1955 S
:= Line_Start
(L
, Sfile
);
1958 C
:= Source_Text
(Sfile
) (S
);
1959 exit when C
= ASCII
.LF
or else C
= ASCII
.CR
or else C
= EOF
;
1961 -- Deal with matching entry in List_Pragmas table
1964 and then List_Pragmas_Index
<= List_Pragmas
.Last
1965 and then S
= List_Pragmas
.Table
(List_Pragmas_Index
).Ploc
1967 case List_Pragmas
.Table
(List_Pragmas_Index
).Ptyp
is
1971 -- Ignore if on line with errors so that error flags
1972 -- get properly listed with the error line .
1975 Write_Char
(ASCII
.FF
);
1979 List_Pragmas_Mode
:= True;
1981 if not Line_Number_Output
then
1982 Output_Line_Number
(Physical_To_Logical
(L
, Sfile
));
1983 Line_Number_Output
:= True;
1990 List_Pragmas_Mode
:= False;
1993 List_Pragmas_Index
:= List_Pragmas_Index
+ 1;
1995 -- Normal case (no matching entry in List_Pragmas table)
1998 if Errs
or List_Pragmas_Mode
then
2003 Empty_Line
:= False;
2007 -- If we have output a source line, then add the line terminator, with
2008 -- training spaces preserved (so we output the line exactly as input).
2010 if Line_Number_Output
then
2014 Write_Eol_Keep_Blanks
;
2017 end Output_Source_Line
;
2019 -----------------------------
2020 -- Remove_Warning_Messages --
2021 -----------------------------
2023 procedure Remove_Warning_Messages
(N
: Node_Id
) is
2025 function Check_For_Warning
(N
: Node_Id
) return Traverse_Result
;
2026 -- This function checks one node for a possible warning message
2028 function Check_All_Warnings
is new Traverse_Func
(Check_For_Warning
);
2029 -- This defines the traversal operation
2031 -----------------------
2032 -- Check_For_Warning --
2033 -----------------------
2035 function Check_For_Warning
(N
: Node_Id
) return Traverse_Result
is
2036 Loc
: constant Source_Ptr
:= Sloc
(N
);
2039 function To_Be_Removed
(E
: Error_Msg_Id
) return Boolean;
2040 -- Returns True for a message that is to be removed. Also adjusts
2041 -- warning count appropriately.
2047 function To_Be_Removed
(E
: Error_Msg_Id
) return Boolean is
2049 if E
/= No_Error_Msg
2051 -- Don't remove if location does not match
2053 and then Errors
.Table
(E
).Optr
= Loc
2055 -- Don't remove if not warning/info message. Note that we do
2056 -- not remove style messages here. They are warning messages
2057 -- but not ones we want removed in this context.
2059 and then Errors
.Table
(E
).Warn
2061 -- Don't remove unconditional messages
2063 and then not Errors
.Table
(E
).Uncond
2065 Warnings_Detected
:= Warnings_Detected
- 1;
2068 -- No removal required
2075 -- Start of processing for Check_For_Warnings
2078 while To_Be_Removed
(First_Error_Msg
) loop
2079 First_Error_Msg
:= Errors
.Table
(First_Error_Msg
).Next
;
2082 if First_Error_Msg
= No_Error_Msg
then
2083 Last_Error_Msg
:= No_Error_Msg
;
2086 E
:= First_Error_Msg
;
2087 while E
/= No_Error_Msg
loop
2088 while To_Be_Removed
(Errors
.Table
(E
).Next
) loop
2089 Errors
.Table
(E
).Next
:=
2090 Errors
.Table
(Errors
.Table
(E
).Next
).Next
;
2092 if Errors
.Table
(E
).Next
= No_Error_Msg
then
2093 Last_Error_Msg
:= E
;
2097 E
:= Errors
.Table
(E
).Next
;
2100 if Nkind
(N
) = N_Raise_Constraint_Error
2101 and then Original_Node
(N
) /= N
2102 and then No
(Condition
(N
))
2104 -- Warnings may have been posted on subexpressions of the original
2105 -- tree. We place the original node back on the tree to remove
2106 -- those warnings, whose sloc do not match those of any node in
2107 -- the current tree. Given that we are in unreachable code, this
2108 -- modification to the tree is harmless.
2111 Status
: Traverse_Final_Result
;
2114 if Is_List_Member
(N
) then
2115 Set_Condition
(N
, Original_Node
(N
));
2116 Status
:= Check_All_Warnings
(Condition
(N
));
2118 Rewrite
(N
, Original_Node
(N
));
2119 Status
:= Check_All_Warnings
(N
);
2128 end Check_For_Warning
;
2130 -- Start of processing for Remove_Warning_Messages
2133 if Warnings_Detected
/= 0 then
2135 Discard
: Traverse_Final_Result
;
2136 pragma Warnings
(Off
, Discard
);
2139 Discard
:= Check_All_Warnings
(N
);
2142 end Remove_Warning_Messages
;
2144 procedure Remove_Warning_Messages
(L
: List_Id
) is
2147 if Is_Non_Empty_List
(L
) then
2149 while Present
(Stat
) loop
2150 Remove_Warning_Messages
(Stat
);
2154 end Remove_Warning_Messages
;
2156 ---------------------------
2157 -- Set_Identifier_Casing --
2158 ---------------------------
2160 procedure Set_Identifier_Casing
2161 (Identifier_Name
: System
.Address
;
2162 File_Name
: System
.Address
)
2164 Ident
: constant Big_String_Ptr
:= To_Big_String_Ptr
(Identifier_Name
);
2165 File
: constant Big_String_Ptr
:= To_Big_String_Ptr
(File_Name
);
2168 Desired_Case
: Casing_Type
:= Mixed_Case
;
2169 -- Casing required for result. Default value of Mixed_Case is used if
2170 -- for some reason we cannot find the right file name in the table.
2173 -- Get length of file name
2176 while File
(Flen
+ 1) /= ASCII
.NUL
loop
2180 -- Loop through file names to find matching one. This is a bit slow, but
2181 -- we only do it in error situations so it is not so terrible. Note that
2182 -- if the loop does not exit, then the desired case will be left set to
2183 -- Mixed_Case, this can happen if the name was not in canonical form,
2184 -- and gets canonicalized on VMS. Possibly we could fix this by
2185 -- unconditionally canonicalizing these names ???
2187 for J
in 1 .. Last_Source_File
loop
2188 Get_Name_String
(Full_Debug_Name
(J
));
2191 and then Name_Buffer
(1 .. Name_Len
) = String (File
(1 .. Flen
))
2193 Desired_Case
:= Identifier_Casing
(J
);
2198 -- Copy identifier as given to Name_Buffer
2200 for J
in Name_Buffer
'Range loop
2201 Name_Buffer
(J
) := Ident
(J
);
2203 if Name_Buffer
(J
) = ASCII
.NUL
then
2209 Set_Casing
(Desired_Case
);
2210 end Set_Identifier_Casing
;
2212 -----------------------
2213 -- Set_Ignore_Errors --
2214 -----------------------
2216 procedure Set_Ignore_Errors
(To
: Boolean) is
2218 Errors_Must_Be_Ignored
:= To
;
2219 end Set_Ignore_Errors
;
2221 ------------------------------
2222 -- Set_Msg_Insertion_Column --
2223 ------------------------------
2225 procedure Set_Msg_Insertion_Column
is
2227 if RM_Column_Check
then
2228 Set_Msg_Str
(" in column ");
2229 Set_Msg_Int
(Int
(Error_Msg_Col
) + 1);
2231 end Set_Msg_Insertion_Column
;
2233 ----------------------------
2234 -- Set_Msg_Insertion_Node --
2235 ----------------------------
2237 procedure Set_Msg_Insertion_Node
is
2242 Error_Msg_Node_1
= Error
2243 or else Error_Msg_Node_1
= Any_Type
;
2245 if Error_Msg_Node_1
= Empty
then
2246 Set_Msg_Blank_Conditional
;
2247 Set_Msg_Str
("<empty>");
2249 elsif Error_Msg_Node_1
= Error
then
2251 Set_Msg_Str
("<error>");
2253 elsif Error_Msg_Node_1
= Standard_Void_Type
then
2255 Set_Msg_Str
("procedure name");
2258 Set_Msg_Blank_Conditional
;
2262 K
:= Nkind
(Error_Msg_Node_1
);
2264 -- If we have operator case, skip quotes since name of operator
2265 -- itself will supply the required quotations. An operator can be an
2266 -- applied use in an expression or an explicit operator symbol, or an
2267 -- identifier whose name indicates it is an operator.
2270 or else K
= N_Operator_Symbol
2271 or else K
= N_Defining_Operator_Symbol
2272 or else ((K
= N_Identifier
or else K
= N_Defining_Identifier
)
2273 and then Is_Operator_Name
(Chars
(Error_Msg_Node_1
)))
2275 Set_Msg_Node
(Error_Msg_Node_1
);
2277 -- Normal case, not an operator, surround with quotes
2281 Set_Qualification
(Error_Msg_Qual_Level
, Error_Msg_Node_1
);
2282 Set_Msg_Node
(Error_Msg_Node_1
);
2287 -- The following assignment ensures that a second ampersand insertion
2288 -- character will correspond to the Error_Msg_Node_2 parameter. We
2289 -- suppress possible validity checks in case operating in -gnatVa mode,
2290 -- and Error_Msg_Node_2 is not needed and has not been set.
2293 pragma Suppress
(Range_Check
);
2295 Error_Msg_Node_1
:= Error_Msg_Node_2
;
2297 end Set_Msg_Insertion_Node
;
2299 --------------------------------------
2300 -- Set_Msg_Insertion_Type_Reference --
2301 --------------------------------------
2303 procedure Set_Msg_Insertion_Type_Reference
(Flag
: Source_Ptr
) is
2309 if Error_Msg_Node_1
= Standard_Void_Type
then
2310 Set_Msg_Str
("package or procedure name");
2313 elsif Error_Msg_Node_1
= Standard_Exception_Type
then
2314 Set_Msg_Str
("exception name");
2317 elsif Error_Msg_Node_1
= Any_Access
2318 or else Error_Msg_Node_1
= Any_Array
2319 or else Error_Msg_Node_1
= Any_Boolean
2320 or else Error_Msg_Node_1
= Any_Character
2321 or else Error_Msg_Node_1
= Any_Composite
2322 or else Error_Msg_Node_1
= Any_Discrete
2323 or else Error_Msg_Node_1
= Any_Fixed
2324 or else Error_Msg_Node_1
= Any_Integer
2325 or else Error_Msg_Node_1
= Any_Modular
2326 or else Error_Msg_Node_1
= Any_Numeric
2327 or else Error_Msg_Node_1
= Any_Real
2328 or else Error_Msg_Node_1
= Any_Scalar
2329 or else Error_Msg_Node_1
= Any_String
2331 Get_Unqualified_Decoded_Name_String
(Chars
(Error_Msg_Node_1
));
2332 Set_Msg_Name_Buffer
;
2335 elsif Error_Msg_Node_1
= Universal_Real
then
2336 Set_Msg_Str
("type universal real");
2339 elsif Error_Msg_Node_1
= Universal_Integer
then
2340 Set_Msg_Str
("type universal integer");
2343 elsif Error_Msg_Node_1
= Universal_Fixed
then
2344 Set_Msg_Str
("type universal fixed");
2348 -- Special case of anonymous array
2350 if Nkind
(Error_Msg_Node_1
) in N_Entity
2351 and then Is_Array_Type
(Error_Msg_Node_1
)
2352 and then Present
(Related_Array_Object
(Error_Msg_Node_1
))
2354 Set_Msg_Str
("type of ");
2355 Set_Msg_Node
(Related_Array_Object
(Error_Msg_Node_1
));
2356 Set_Msg_Str
(" declared");
2357 Set_Msg_Insertion_Line_Number
2358 (Sloc
(Related_Array_Object
(Error_Msg_Node_1
)), Flag
);
2362 -- If we fall through, it is not a special case, so first output
2363 -- the name of the type, preceded by private for a private type
2365 if Is_Private_Type
(Error_Msg_Node_1
) then
2366 Set_Msg_Str
("private type ");
2368 Set_Msg_Str
("type ");
2371 Ent
:= Error_Msg_Node_1
;
2373 if Is_Internal_Name
(Chars
(Ent
)) then
2374 Unwind_Internal_Type
(Ent
);
2377 -- Types in Standard are displayed as "Standard.name"
2379 if Sloc
(Ent
) <= Standard_Location
then
2381 Set_Msg_Str
("Standard.");
2386 -- Types in other language defined units are displayed as
2387 -- "package-name.type-name"
2390 Is_Predefined_File_Name
(Unit_File_Name
(Get_Source_Unit
(Ent
)))
2392 Get_Unqualified_Decoded_Name_String
2393 (Unit_Name
(Get_Source_Unit
(Ent
)));
2394 Name_Len
:= Name_Len
- 2;
2396 Set_Casing
(Mixed_Case
);
2397 Set_Msg_Name_Buffer
;
2399 Set_Casing
(Mixed_Case
);
2404 -- All other types display as "type name" defined at line xxx
2405 -- possibly qualified if qualification is requested.
2409 Set_Qualification
(Error_Msg_Qual_Level
, Ent
);
2413 -- If Ent is an anonymous subprogram type, there is no name to print,
2414 -- so remove enclosing quotes.
2416 if Buffer_Ends_With
("""") then
2417 Buffer_Remove
("""");
2423 -- If the original type did not come from a predefined file, add the
2424 -- location where the type was defined.
2426 if Sloc
(Error_Msg_Node_1
) > Standard_Location
2428 not Is_Predefined_File_Name
2429 (Unit_File_Name
(Get_Source_Unit
(Error_Msg_Node_1
)))
2431 Set_Msg_Str
(" defined");
2432 Set_Msg_Insertion_Line_Number
(Sloc
(Error_Msg_Node_1
), Flag
);
2434 -- If it did come from a predefined file, deal with the case where
2435 -- this was a file with a generic instantiation from elsewhere.
2438 if Sloc
(Error_Msg_Node_1
) > Standard_Location
then
2440 Iloc
: constant Source_Ptr
:=
2441 Instantiation_Location
(Sloc
(Error_Msg_Node_1
));
2444 if Iloc
/= No_Location
2445 and then not Suppress_Instance_Location
2447 Set_Msg_Str
(" from instance");
2448 Set_Msg_Insertion_Line_Number
(Iloc
, Flag
);
2453 end Set_Msg_Insertion_Type_Reference
;
2455 ---------------------------------
2456 -- Set_Msg_Insertion_Unit_Name --
2457 ---------------------------------
2459 procedure Set_Msg_Insertion_Unit_Name
(Suffix
: Boolean := True) is
2461 if Error_Msg_Unit_1
= No_Unit_Name
then
2464 elsif Error_Msg_Unit_1
= Error_Unit_Name
then
2466 Set_Msg_Str
("<error>");
2469 Get_Unit_Name_String
(Error_Msg_Unit_1
, Suffix
);
2472 Set_Msg_Name_Buffer
;
2476 -- The following assignment ensures that a second percent insertion
2477 -- character will correspond to the Error_Msg_Unit_2 parameter. We
2478 -- suppress possible validity checks in case operating in -gnatVa mode,
2479 -- and Error_Msg_Unit_2 is not needed and has not been set.
2482 pragma Suppress
(Range_Check
);
2484 Error_Msg_Unit_1
:= Error_Msg_Unit_2
;
2486 end Set_Msg_Insertion_Unit_Name
;
2492 procedure Set_Msg_Node
(Node
: Node_Id
) is
2497 if Nkind
(Node
) = N_Designator
then
2498 Set_Msg_Node
(Name
(Node
));
2500 Set_Msg_Node
(Identifier
(Node
));
2503 elsif Nkind
(Node
) = N_Defining_Program_Unit_Name
then
2504 Set_Msg_Node
(Name
(Node
));
2506 Set_Msg_Node
(Defining_Identifier
(Node
));
2509 elsif Nkind
(Node
) = N_Selected_Component
then
2510 Set_Msg_Node
(Prefix
(Node
));
2512 Set_Msg_Node
(Selector_Name
(Node
));
2516 -- The only remaining possibilities are identifiers, defining
2517 -- identifiers, pragmas, and pragma argument associations.
2519 if Nkind
(Node
) = N_Pragma
then
2520 Nam
:= Pragma_Name
(Node
);
2522 -- The other cases have Chars fields, and we want to test for possible
2523 -- internal names, which generally represent something gone wrong. An
2524 -- exception is the case of internal type names, where we try to find a
2525 -- reasonable external representation for the external name
2527 elsif Is_Internal_Name
(Chars
(Node
))
2529 ((Is_Entity_Name
(Node
)
2530 and then Present
(Entity
(Node
))
2531 and then Is_Type
(Entity
(Node
)))
2533 (Nkind
(Node
) = N_Defining_Identifier
and then Is_Type
(Node
)))
2535 if Nkind
(Node
) = N_Identifier
then
2536 Ent
:= Entity
(Node
);
2541 -- If the type is the designated type of an access_to_subprogram,
2542 -- there is no name to provide in the call.
2544 if Ekind
(Ent
) = E_Subprogram_Type
then
2547 Unwind_Internal_Type
(Ent
);
2551 -- If not internal name, just use name in Chars field
2554 Nam
:= Chars
(Node
);
2557 -- At this stage, the name to output is in Nam
2559 Get_Unqualified_Decoded_Name_String
(Nam
);
2561 -- Remove trailing upper case letters from the name (useful for
2562 -- dealing with some cases of internal names.
2564 while Name_Len
> 1 and then Name_Buffer
(Name_Len
) in 'A' .. 'Z' loop
2565 Name_Len
:= Name_Len
- 1;
2568 -- If we have any of the names from standard that start with the
2569 -- characters "any " (e.g. Any_Type), then kill the message since
2570 -- almost certainly it is a junk cascaded message.
2573 and then Name_Buffer
(1 .. 4) = "any "
2575 Kill_Message
:= True;
2578 -- Now we have to set the proper case. If we have a source location
2579 -- then do a check to see if the name in the source is the same name
2580 -- as the name in the Names table, except for possible differences
2581 -- in case, which is the case when we can copy from the source.
2584 Src_Loc
: constant Source_Ptr
:= Sloc
(Node
);
2585 Sbuffer
: Source_Buffer_Ptr
;
2587 Src_Ptr
: Source_Ptr
;
2593 -- For standard locations, always use mixed case
2595 if Src_Loc
<= No_Location
2596 or else Sloc
(Node
) <= No_Location
2598 Set_Casing
(Mixed_Case
);
2601 -- Determine if the reference we are dealing with corresponds to
2602 -- text at the point of the error reference. This will often be
2603 -- the case for simple identifier references, and is the case
2604 -- where we can copy the spelling from the source.
2606 Sbuffer
:= Source_Text
(Get_Source_File_Index
(Src_Loc
));
2608 while Ref_Ptr
<= Name_Len
loop
2610 Fold_Lower
(Sbuffer
(Src_Ptr
)) /=
2611 Fold_Lower
(Name_Buffer
(Ref_Ptr
));
2612 Ref_Ptr
:= Ref_Ptr
+ 1;
2613 Src_Ptr
:= Src_Ptr
+ 1;
2616 -- If we get through the loop without a mismatch, then output the
2617 -- name the way it is spelled in the source program
2619 if Ref_Ptr
> Name_Len
then
2622 for J
in 1 .. Name_Len
loop
2623 Name_Buffer
(J
) := Sbuffer
(Src_Ptr
);
2624 Src_Ptr
:= Src_Ptr
+ 1;
2627 -- Otherwise set the casing using the default identifier casing
2630 Set_Casing
(Identifier_Casing
(Flag_Source
), Mixed_Case
);
2635 Set_Msg_Name_Buffer
;
2643 procedure Set_Msg_Text
(Text
: String; Flag
: Source_Ptr
) is
2644 C
: Character; -- Current character
2645 P
: Natural; -- Current index;
2648 Manual_Quote_Mode
:= False;
2649 Is_Unconditional_Msg
:= False;
2651 Flag_Source
:= Get_Source_File_Index
(Flag
);
2654 while P
<= Text
'Last loop
2658 -- Check for insertion character or sequence
2662 if P
<= Text
'Last and then Text
(P
) = '%' then
2664 Set_Msg_Insertion_Name_Literal
;
2666 Set_Msg_Insertion_Name
;
2670 if P
<= Text
'Last and then Text
(P
) = '$' then
2672 Set_Msg_Insertion_Unit_Name
(Suffix
=> False);
2674 Set_Msg_Insertion_Unit_Name
;
2678 Set_Msg_Insertion_File_Name
;
2681 Set_Msg_Insertion_Type_Reference
(Flag
);
2684 Set_Msg_Insertion_Reserved_Name
;
2687 Set_Msg_Insertion_Node
;
2690 Set_Msg_Insertion_Line_Number
(Error_Msg_Sloc
, Flag
);
2693 Continuation
:= True;
2695 if Text
(P
) = '\' then
2696 Continuation_New_Line
:= True;
2701 Set_Msg_Insertion_Column
;
2704 Set_Msg_Insertion_Run_Time_Name
;
2707 Set_Msg_Insertion_Uint
;
2710 Manual_Quote_Mode
:= not Manual_Quote_Mode
;
2714 Is_Unconditional_Msg
:= True;
2717 null; -- already dealt with
2720 null; -- already dealt with
2723 null; -- already dealt with
2726 Set_Msg_Char
(Text
(P
));
2730 Set_Msg_Str
(Error_Msg_String
(1 .. Error_Msg_Strlen
));
2732 -- Upper case letter
2736 -- Start of reserved word if two or more
2738 if P
<= Text
'Last and then Text
(P
) in 'A' .. 'Z' then
2740 Set_Msg_Insertion_Reserved_Word
(Text
, P
);
2742 -- Single upper case letter is just inserted
2748 -- Normal character with no special treatment
2762 procedure Set_Posted
(N
: Node_Id
) is
2766 if Is_Serious_Error
then
2768 -- We always set Error_Posted on the node itself
2770 Set_Error_Posted
(N
);
2772 -- If it is a subexpression, then set Error_Posted on parents up to
2773 -- and including the first non-subexpression construct. This helps
2774 -- avoid cascaded error messages within a single expression.
2780 Set_Error_Posted
(P
);
2781 exit when Nkind
(P
) not in N_Subexpr
;
2784 -- A special check, if we just posted an error on an attribute
2785 -- definition clause, then also set the entity involved as posted.
2786 -- For example, this stops complaining about the alignment after
2787 -- complaining about the size, which is likely to be useless.
2789 if Nkind
(P
) = N_Attribute_Definition_Clause
then
2790 if Is_Entity_Name
(Name
(P
)) then
2791 Set_Error_Posted
(Entity
(Name
(P
)));
2797 -----------------------
2798 -- Set_Qualification --
2799 -----------------------
2801 procedure Set_Qualification
(N
: Nat
; E
: Entity_Id
) is
2803 if N
/= 0 and then Scope
(E
) /= Standard_Standard
then
2804 Set_Qualification
(N
- 1, Scope
(E
));
2805 Set_Msg_Node
(Scope
(E
));
2808 end Set_Qualification
;
2810 ------------------------
2811 -- Special_Msg_Delete --
2812 ------------------------
2814 -- Is it really right to have all this specialized knowledge in errout?
2816 function Special_Msg_Delete
2818 N
: Node_Or_Entity_Id
;
2819 E
: Node_Or_Entity_Id
) return Boolean
2822 -- Never delete messages in -gnatdO mode
2824 if Debug_Flag_OO
then
2827 -- Processing for "atomic access cannot be guaranteed"
2829 elsif Msg
= "atomic access to & cannot be guaranteed" then
2831 -- When an atomic object refers to a non-atomic type in the same
2832 -- scope, we implicitly make the type atomic. In the non-error case
2833 -- this is surely safe (and in fact prevents an error from occurring
2834 -- if the type is not atomic by default). But if the object cannot be
2835 -- made atomic, then we introduce an extra junk message by this
2836 -- manipulation, which we get rid of here.
2838 -- We identify this case by the fact that it references a type for
2839 -- which Is_Atomic is set, but there is no Atomic pragma setting it.
2842 and then Is_Atomic
(E
)
2843 and then No
(Get_Rep_Pragma
(E
, Name_Atomic
))
2848 -- Processing for "Size too small" messages
2850 elsif Msg
= "size for& too small, minimum allowed is ^" then
2852 -- Suppress "size too small" errors in CodePeer mode and Alfa mode,
2853 -- since pragma Pack is also ignored in these configurations.
2855 if CodePeer_Mode
or Alfa_Mode
then
2858 -- When a size is wrong for a frozen type there is no explicit size
2859 -- clause, and other errors have occurred, suppress the message,
2860 -- since it is likely that this size error is a cascaded result of
2861 -- other errors. The reason we eliminate unfrozen types is that
2862 -- messages issued before the freeze type are for sure OK.
2865 and then Serious_Errors_Detected
> 0
2866 and then Nkind
(N
) /= N_Component_Clause
2867 and then Nkind
(Parent
(N
)) /= N_Component_Clause
2869 No
(Get_Attribute_Definition_Clause
(E
, Attribute_Size
))
2871 No
(Get_Attribute_Definition_Clause
(E
, Attribute_Object_Size
))
2873 No
(Get_Attribute_Definition_Clause
(E
, Attribute_Value_Size
))
2879 -- All special tests complete, so go ahead with message
2882 end Special_Msg_Delete
;
2884 --------------------------
2885 -- Unwind_Internal_Type --
2886 --------------------------
2888 procedure Unwind_Internal_Type
(Ent
: in out Entity_Id
) is
2889 Derived
: Boolean := False;
2891 Old_Ent
: Entity_Id
;
2894 -- Undo placement of a quote, since we will put it back later
2896 Mchar
:= Msg_Buffer
(Msglen
);
2899 Msglen
:= Msglen
- 1;
2902 -- The loop here deals with recursive types, we are trying to find a
2903 -- related entity that is not an implicit type. Note that the check with
2904 -- Old_Ent stops us from getting "stuck". Also, we don't output the
2905 -- "type derived from" message more than once in the case where we climb
2906 -- up multiple levels.
2911 -- Implicit access type, use directly designated type In Ada 2005,
2912 -- the designated type may be an anonymous access to subprogram, in
2913 -- which case we can only point to its definition.
2915 if Is_Access_Type
(Ent
) then
2916 if Ekind
(Ent
) = E_Access_Subprogram_Type
2917 or else Ekind
(Ent
) = E_Anonymous_Access_Subprogram_Type
2918 or else Is_Access_Protected_Subprogram_Type
(Ent
)
2920 Ent
:= Directly_Designated_Type
(Ent
);
2922 if not Comes_From_Source
(Ent
) then
2923 if Buffer_Ends_With
("type ") then
2924 Buffer_Remove
("type ");
2927 if Is_Itype
(Ent
) then
2929 Assoc
: constant Node_Id
:=
2930 Associated_Node_For_Itype
(Ent
);
2933 if Nkind
(Assoc
) in N_Subprogram_Specification
then
2935 -- Anonymous access to subprogram in a signature.
2936 -- Indicate the enclosing subprogram.
2940 (Associated_Node_For_Itype
(Ent
));
2942 ("access to subprogram declared in profile of ");
2945 Set_Msg_Str
("access to subprogram with profile ");
2950 elsif Ekind
(Ent
) = E_Function
then
2951 Set_Msg_Str
("access to function ");
2953 Set_Msg_Str
("access to procedure ");
2958 -- Type is access to object, named or anonymous
2961 Set_Msg_Str
("access to ");
2962 Ent
:= Directly_Designated_Type
(Ent
);
2967 elsif Is_Class_Wide_Type
(Ent
) then
2969 Ent
:= Root_Type
(Ent
);
2971 -- Use base type if this is a subtype
2973 elsif Ent
/= Base_Type
(Ent
) then
2974 Buffer_Remove
("type ");
2976 -- Avoid duplication "subtype of subtype of", and also replace
2977 -- "derived from subtype of" simply by "derived from"
2979 if not Buffer_Ends_With
("subtype of ")
2980 and then not Buffer_Ends_With
("derived from ")
2982 Set_Msg_Str
("subtype of ");
2985 Ent
:= Base_Type
(Ent
);
2987 -- If this is a base type with a first named subtype, use the first
2988 -- named subtype instead. This is not quite accurate in all cases,
2989 -- but it makes too much noise to be accurate and add 'Base in all
2990 -- cases. Note that we only do this is the first named subtype is not
2991 -- itself an internal name. This avoids the obvious loop (subtype ->
2992 -- basetype -> subtype) which would otherwise occur!)
2996 FST
: constant Entity_Id
:= First_Subtype
(Ent
);
2999 if not Is_Internal_Name
(Chars
(FST
)) then
3003 -- Otherwise use root type
3007 Buffer_Remove
("type ");
3009 -- Test for "subtype of type derived from" which seems
3010 -- excessive and is replaced by "type derived from".
3012 Buffer_Remove
("subtype of");
3014 -- Avoid duplicated "type derived from type derived from"
3016 if not Buffer_Ends_With
("type derived from ") then
3017 Set_Msg_Str
("type derived from ");
3028 -- If we are stuck in a loop, get out and settle for the internal
3029 -- name after all. In this case we set to kill the message if it is
3030 -- not the first error message (we really try hard not to show the
3031 -- dirty laundry of the implementation to the poor user!)
3033 if Ent
= Old_Ent
then
3034 Kill_Message
:= True;
3038 -- Get out if we finally found a non-internal name to use
3040 exit Find
when not Is_Internal_Name
(Chars
(Ent
));
3046 end Unwind_Internal_Type
;
3052 procedure VMS_Convert
is
3062 P
:= Msg_Buffer
'First;
3068 if Msg_Buffer
(P
) = '-' then
3069 for G
in Gnames
'Range loop
3070 L
:= Gnames
(G
)'Length;
3072 -- See if we have "-ggg switch", where ggg is Gnames entry
3074 if P
+ L
+ 7 <= Msglen
3075 and then Msg_Buffer
(P
+ 1 .. P
+ L
) = Gnames
(G
).all
3076 and then Msg_Buffer
(P
+ L
+ 1 .. P
+ L
+ 7) = " switch"
3078 -- Replace by "/vvv qualifier", where vvv is Vnames entry
3080 N
:= Vnames
(G
)'Length;
3081 Msg_Buffer
(P
+ N
+ 11 .. Msglen
+ N
- L
+ 3) :=
3082 Msg_Buffer
(P
+ L
+ 8 .. Msglen
);
3083 Msg_Buffer
(P
) := '/';
3084 Msg_Buffer
(P
+ 1 .. P
+ N
) := Vnames
(G
).all;
3085 Msg_Buffer
(P
+ N
+ 1 .. P
+ N
+ 10) := " qualifier";
3087 Msglen
:= Msglen
+ N
- L
+ 3;