1 ------------------------------------------------------------------------------
3 -- GNAT COMPILER COMPONENTS --
9 -- Copyright (C) 1992-2007, 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 Sinput
; use Sinput
;
47 with Sinfo
; use Sinfo
;
48 with Snames
; use Snames
;
49 with Stand
; use Stand
;
51 with Uname
; use Uname
;
53 with Unchecked_Conversion
;
55 package body Errout
is
57 Errors_Must_Be_Ignored
: Boolean := False;
58 -- Set to True by procedure Set_Ignore_Errors (True), when calls to
59 -- error message procedures should be ignored (when parsing irrelevant
60 -- text in sources being preprocessed).
62 Finalize_Called
: Boolean := False;
63 -- Set True if the Finalize routine has been called
65 Warn_On_Instance
: Boolean;
66 -- Flag set true for warning message to be posted on instance
68 ------------------------------------
69 -- Table of Non-Instance Messages --
70 ------------------------------------
72 -- This table contains an entry for every error message processed by the
73 -- Error_Msg routine that is not posted on generic (or inlined) instance.
74 -- As explained in further detail in the Error_Msg procedure body, this
75 -- table is used to avoid posting redundant messages on instances.
77 type NIM_Record
is record
81 -- Type used to store text and location of one message
83 package Non_Instance_Msgs
is new Table
.Table
(
84 Table_Component_Type
=> NIM_Record
,
85 Table_Index_Type
=> Int
,
88 Table_Increment
=> 100,
89 Table_Name
=> "Non_Instance_Msgs");
91 -----------------------
92 -- Local Subprograms --
93 -----------------------
95 procedure Error_Msg_Internal
100 -- This is the low level routine used to post messages after dealing with
101 -- the issue of messages placed on instantiations (which get broken up
102 -- into separate calls in Error_Msg). Sptr is the location on which the
103 -- flag will be placed in the output. In the case where the flag is on
104 -- the template, this points directly to the template, not to one of the
105 -- instantiation copies of the template. Optr is the original location
106 -- used to flag the error, and this may indeed point to an instantiation
107 -- copy. So typically we can see Optr pointing to the template location
108 -- in an instantiation copy when Sptr points to the source location of
109 -- the actual instantiation (i.e the line with the new). Msg_Cont is
110 -- set true if this is a continuation message.
112 function No_Warnings
(N
: Node_Or_Entity_Id
) return Boolean;
113 -- Determines if warnings should be suppressed for the given node
115 function OK_Node
(N
: Node_Id
) return Boolean;
116 -- Determines if a node is an OK node to place an error message on (return
117 -- True) or if the error message should be suppressed (return False). A
118 -- message is suppressed if the node already has an error posted on it,
119 -- or if it refers to an Etype that has an error posted on it, or if
120 -- it references an Entity that has an error posted on it.
122 procedure Output_Source_Line
123 (L
: Physical_Line_Number
;
124 Sfile
: Source_File_Index
;
126 -- Outputs text of source line L, in file S, together with preceding line
127 -- number, as described above for Output_Line_Number. The Errs parameter
128 -- indicates if there are errors attached to the line, which forces
129 -- listing on, even in the presence of pragma List (Off).
131 procedure Set_Msg_Insertion_Column
;
132 -- Handle column number insertion (@ insertion character)
134 procedure Set_Msg_Insertion_Node
;
135 -- Handle node (name from node) insertion (& insertion character)
137 procedure Set_Msg_Insertion_Type_Reference
(Flag
: Source_Ptr
);
138 -- Handle type reference (right brace insertion character). Flag is the
139 -- location of the flag, which is provided for the internal call to
140 -- Set_Msg_Insertion_Line_Number,
142 procedure Set_Msg_Insertion_Unit_Name
(Suffix
: Boolean := True);
143 -- Handle unit name insertion ($ insertion character). Depending on Boolean
144 -- parameter Suffix, (spec) or (body) is appended after the unit name.
146 procedure Set_Msg_Node
(Node
: Node_Id
);
147 -- Add the sequence of characters for the name associated with the
148 -- given node to the current message.
150 procedure Set_Msg_Text
(Text
: String; Flag
: Source_Ptr
);
151 -- Add a sequence of characters to the current message. The characters may
152 -- be one of the special insertion characters (see documentation in spec).
153 -- Flag is the location at which the error is to be posted, which is used
154 -- to determine whether or not the # insertion needs a file name. The
155 -- variables Msg_Buffer, Msglen, Is_Style_Msg, Is_Warning_Msg, and
156 -- Is_Unconditional_Msg are set on return.
158 procedure Set_Posted
(N
: Node_Id
);
159 -- Sets the Error_Posted flag on the given node, and all its parents
160 -- that are subexpressions and then on the parent non-subexpression
161 -- construct that contains the original expression (this reduces the
162 -- number of cascaded messages). Note that this call only has an effect
163 -- for a serious error. For a non-serious error, it has no effect.
165 procedure Set_Qualification
(N
: Nat
; E
: Entity_Id
);
166 -- Outputs up to N levels of qualification for the given entity. For
167 -- example, the entity A.B.C.D will output B.C. if N = 2.
169 function Special_Msg_Delete
171 N
: Node_Or_Entity_Id
;
172 E
: Node_Or_Entity_Id
) return Boolean;
173 -- This function is called from Error_Msg_NEL, passing the message Msg,
174 -- node N on which the error is to be posted, and the entity or node E
175 -- to be used for an & insertion in the message if any. The job of this
176 -- procedure is to test for certain cascaded messages that we would like
177 -- to suppress. If the message is to be suppressed then we return True.
178 -- If the message should be generated (the normal case) False is returned.
180 procedure Unwind_Internal_Type
(Ent
: in out Entity_Id
);
181 -- This procedure is given an entity id for an internal type, i.e.
182 -- a type with an internal name. It unwinds the type to try to get
183 -- to something reasonably printable, generating prefixes like
184 -- "subtype of", "access to", etc along the way in the buffer. The
185 -- value in Ent on return is the final name to be printed. Hopefully
186 -- this is not an internal name, but in some internal name cases, it
187 -- is an internal name, and has to be printed anyway (although in this
188 -- case the message has been killed if possible). The global variable
189 -- Class_Flag is set to True if the resulting entity should have
190 -- 'Class appended to its name (see Add_Class procedure), and is
191 -- otherwise unchanged.
193 procedure VMS_Convert
;
194 -- This procedure has no effect if called when the host is not OpenVMS.
195 -- If the host is indeed OpenVMS, then the error message stored in
196 -- Msg_Buffer is scanned for appearences of switch names which need
197 -- converting to corresponding VMS qualifer names. See Gnames/Vnames
198 -- table in Errout spec for precise definition of the conversion that
199 -- is performed by this 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
248 -- to an instantiation of this generic template, then the actual
249 -- message will be posted on the generic instantiation, along with
250 -- additional messages 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
262 -- the 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
273 -- at 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 processing of 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
290 -- of 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
293 -- on the template when we compiled the template (the template is
294 -- always compiled before any instantiations). For this purpose,
295 -- we use a separate table of messages. The reason we do this is
298 -- First, the messages can get changed by various processing
299 -- including the insertion of tokens etc, making it hard to
300 -- do the comparison.
302 -- Second, we will suppress a warning on a template if it is
303 -- not in the current extended source unit. That's reasonable
304 -- and means we don't want the warning on the instantiation
305 -- here either, but it does mean that the main error table
306 -- would not in any case include the message.
308 if Flag_Location = Orig_Loc then
309 Non_Instance_Msgs.Append ((new String'(Msg
), Flag_Location
));
310 Warn_On_Instance
:= False;
312 -- Here we have an instance message
315 -- Delete if debug flag off, and this message duplicates a
316 -- message already posted on the corresponding template
318 if not Debug_Flag_GG
then
319 for J
in Non_Instance_Msgs
.First
.. Non_Instance_Msgs
.Last
loop
320 if Msg
= Non_Instance_Msgs
.Table
(J
).Msg
.all
321 and then Non_Instance_Msgs
.Table
(J
).Loc
= Orig_Loc
328 -- No duplicate, so error/warning will be posted on instance
330 Warn_On_Instance
:= Is_Warning_Msg
;
333 -- Ignore warning message that is suppressed. Note that style
334 -- checks are not considered warning messages for this purpose
336 if Is_Warning_Msg
and then Warnings_Suppressed
(Orig_Loc
) then
340 -- The idea at this stage is that we have two kinds of messages
342 -- First, we have those messages that are to be placed as requested at
343 -- Flag_Location. This includes messages that have nothing to do with
344 -- generics, and also messages placed on generic templates that reflect
345 -- an error in the template itself. For such messages we simply call
346 -- Error_Msg_Internal to place the message in the requested location.
348 if Instantiation
(Sindex
) = No_Location
then
349 Error_Msg_Internal
(Msg
, Flag_Location
, Flag_Location
, False);
353 -- If we are trying to flag an error in an instantiation, we may have
354 -- a generic contract violation. What we generate in this case is:
356 -- instantiation error at ...
357 -- original error message
361 -- warning: in instantiation at
362 -- warning: original warning message
364 -- All these messages are posted at the location of the top level
365 -- instantiation. If there are nested instantiations, then the
366 -- instantiation error message can be repeated, pointing to each
367 -- of the relevant instantiations.
369 -- Note: the instantiation mechanism is also shared for inlining
370 -- of subprogram bodies when front end inlining is done. In this
371 -- case the messages have the form:
373 -- in inlined body at ...
374 -- original error message
378 -- warning: in inlined body at
379 -- warning: original warning message
381 -- OK, this is the case where we have an instantiation error, and
382 -- we need to generate the error on the instantiation, rather than
386 Actual_Error_Loc
: Source_Ptr
;
387 -- Location of outer level instantiation in instantiation case, or
388 -- just a copy of Flag_Location in the normal case. This is the
389 -- location where all error messages will actually be posted.
391 Save_Error_Msg_Sloc
: constant Source_Ptr
:= Error_Msg_Sloc
;
392 -- Save possible location set for caller's message. We need to
393 -- use Error_Msg_Sloc for the location of the instantiation error
394 -- but we have to preserve a possible original value.
396 X
: Source_File_Index
;
398 Msg_Cont_Status
: Boolean;
399 -- Used to label continuation lines in instantiation case with
400 -- proper Msg_Cont status.
403 -- Loop to find highest level instantiation, where all error
404 -- messages will be placed.
408 Actual_Error_Loc
:= Instantiation
(X
);
409 X
:= Get_Source_File_Index
(Actual_Error_Loc
);
410 exit when Instantiation
(X
) = No_Location
;
413 -- Since we are generating the messages at the instantiation
414 -- point in any case, we do not want the references to the
415 -- bad lines in the instance to be annotated with the location
416 -- of the instantiation.
418 Suppress_Instance_Location
:= True;
419 Msg_Cont_Status
:= False;
421 -- Loop to generate instantiation messages
423 Error_Msg_Sloc
:= Flag_Location
;
424 X
:= Get_Source_File_Index
(Flag_Location
);
426 while Instantiation
(X
) /= No_Location
loop
428 -- Suppress instantiation message on continuation lines
430 if Msg
(Msg
'First) /= '\' then
432 -- Case of inlined body
434 if Inlined_Body
(X
) then
435 if Is_Warning_Msg
then
437 ("?in inlined body #",
438 Actual_Error_Loc
, Flag_Location
, Msg_Cont_Status
);
442 ("error in inlined body #",
443 Actual_Error_Loc
, Flag_Location
, Msg_Cont_Status
);
446 -- Case of generic instantiation
449 if Is_Warning_Msg
then
451 ("?in instantiation #",
452 Actual_Error_Loc
, Flag_Location
, Msg_Cont_Status
);
456 ("instantiation error #",
457 Actual_Error_Loc
, Flag_Location
, Msg_Cont_Status
);
462 Error_Msg_Sloc
:= Instantiation
(X
);
463 X
:= Get_Source_File_Index
(Error_Msg_Sloc
);
464 Msg_Cont_Status
:= True;
467 Suppress_Instance_Location
:= False;
468 Error_Msg_Sloc
:= Save_Error_Msg_Sloc
;
470 -- Here we output the original message on the outer instantiation
473 (Msg
, Actual_Error_Loc
, Flag_Location
, Msg_Cont_Status
);
481 procedure Error_Msg_AP
(Msg
: String) is
486 -- If we had saved the Scan_Ptr value after scanning the previous
487 -- token, then we would have exactly the right place for putting
488 -- the flag immediately at hand. However, that would add at least
489 -- two instructions to a Scan call *just* to service the possibility
490 -- of an Error_Msg_AP call. So instead we reconstruct that value.
492 -- We have two possibilities, start with Prev_Token_Ptr and skip over
493 -- the current token, which is made harder by the possibility that this
494 -- token may be in error, or start with Token_Ptr and work backwards.
495 -- We used to take the second approach, but it's hard because of
496 -- comments, and harder still because things that look like comments
497 -- can appear inside strings. So now we take the first approach.
499 -- Note: in the case where there is no previous token, Prev_Token_Ptr
500 -- is set to Source_First, which is a reasonable position for the
501 -- error flag in this situation.
503 S1
:= Prev_Token_Ptr
;
506 -- If the previous token is a string literal, we need a special approach
507 -- since there may be white space inside the literal and we don't want
508 -- to stop on that white space.
510 -- Note: since this is an error recovery issue anyway, it is not worth
511 -- worrying about special UTF_32 line terminator characters here.
513 if Prev_Token
= Tok_String_Literal
then
517 if Source
(S1
) = C
then
519 exit when Source
(S1
) /= C
;
520 elsif Source
(S1
) in Line_Terminator
then
525 -- Character literal also needs special handling
527 elsif Prev_Token
= Tok_Char_Literal
then
530 -- Otherwise we search forward for the end of the current token, marked
531 -- by a line terminator, white space, a comment symbol or if we bump
532 -- into the following token (i.e. the current token).
534 -- Again, it is not worth worrying about UTF_32 special line terminator
535 -- characters in this context, since this is only for error recovery.
538 while Source
(S1
) not in Line_Terminator
539 and then Source
(S1
) /= ' '
540 and then Source
(S1
) /= ASCII
.HT
541 and then (Source
(S1
) /= '-' or else Source
(S1
+ 1) /= '-')
542 and then S1
/= Token_Ptr
548 -- S1 is now set to the location for the flag
557 procedure Error_Msg_BC
(Msg
: String) is
559 -- If we are at end of file, post the flag after the previous token
561 if Token
= Tok_EOF
then
564 -- If we are at start of file, post the flag at the current token
566 elsif Token_Ptr
= Source_First
(Current_Source_File
) then
569 -- If the character before the current token is a space or a horizontal
570 -- tab, then we place the flag on this character (in the case of a tab
571 -- we would really like to place it in the "last" character of the tab
572 -- space, but that it too much trouble to worry about).
574 elsif Source
(Token_Ptr
- 1) = ' '
575 or else Source
(Token_Ptr
- 1) = ASCII
.HT
577 Error_Msg
(Msg
, Token_Ptr
- 1);
579 -- If there is no space or tab before the current token, then there is
580 -- no room to place the flag before the token, so we place it on the
581 -- token instead (this happens for example at the start of a line).
584 Error_Msg
(Msg
, Token_Ptr
);
592 procedure Error_Msg_CRT
(Feature
: String; N
: Node_Id
) is
593 CNRT
: constant String := " not allowed in no run time mode";
594 CCRT
: constant String := " not supported by configuration>";
596 S
: String (1 .. Feature
'Length + 1 + CCRT
'Length);
601 S
(2 .. Feature
'Length + 1) := Feature
;
602 L
:= Feature
'Length + 2;
604 if No_Run_Time_Mode
then
605 S
(L
.. L
+ CNRT
'Length - 1) := CNRT
;
606 L
:= L
+ CNRT
'Length - 1;
608 else pragma Assert
(Configurable_Run_Time_Mode
);
609 S
(L
.. L
+ CCRT
'Length - 1) := CCRT
;
610 L
:= L
+ CCRT
'Length - 1;
613 Error_Msg_N
(S
(1 .. L
), N
);
614 Configurable_Run_Time_Violations
:= Configurable_Run_Time_Violations
+ 1;
621 procedure Error_Msg_F
(Msg
: String; N
: Node_Id
) is
623 Error_Msg_NEL
(Msg
, N
, N
, Sloc
(First_Node
(N
)));
630 procedure Error_Msg_FE
633 E
: Node_Or_Entity_Id
)
636 Error_Msg_NEL
(Msg
, N
, E
, Sloc
(First_Node
(N
)));
639 ------------------------
640 -- Error_Msg_Internal --
641 ------------------------
643 procedure Error_Msg_Internal
649 Next_Msg
: Error_Msg_Id
;
650 -- Pointer to next message at insertion point
652 Prev_Msg
: Error_Msg_Id
;
653 -- Pointer to previous message at insertion point
655 Temp_Msg
: Error_Msg_Id
;
657 procedure Handle_Serious_Error
;
658 -- Internal procedure to do all error message handling for a serious
659 -- error message, other than bumping the error counts and arranging
660 -- for the message to be output.
662 --------------------------
663 -- Handle_Serious_Error --
664 --------------------------
666 procedure Handle_Serious_Error
is
668 -- Turn off code generation if not done already
670 if Operating_Mode
= Generate_Code
then
671 Operating_Mode
:= Check_Semantics
;
672 Expander_Active
:= False;
675 -- Set the fatal error flag in the unit table unless we are
676 -- in Try_Semantics mode. This stops the semantics from being
677 -- performed if we find a serious error. This is skipped if we
678 -- are currently dealing with the configuration pragma file.
681 and then Current_Source_Unit
/= No_Unit
683 Set_Fatal_Error
(Get_Source_Unit
(Sptr
));
685 end Handle_Serious_Error
;
687 -- Start of processing for Error_Msg_Internal
690 if Raise_Exception_On_Error
/= 0 then
691 raise Error_Msg_Exception
;
694 Continuation
:= Msg_Cont
;
695 Continuation_New_Line
:= False;
696 Suppress_Message
:= False;
697 Kill_Message
:= False;
698 Set_Msg_Text
(Msg
, Sptr
);
700 -- Kill continuation if parent message killed
702 if Continuation
and Last_Killed
then
706 -- Return without doing anything if message is suppressed
709 and not All_Errors_Mode
710 and not (Msg
(Msg
'Last) = '!')
711 and not Is_Warning_Msg
713 if not Continuation
then
720 -- Return without doing anything if message is killed and this
721 -- is not the first error message. The philosophy is that if we
722 -- get a weird error message and we already have had a message,
723 -- then we hope the weird message is a junk cascaded message
726 and then not All_Errors_Mode
727 and then Total_Errors_Detected
/= 0
729 if not Continuation
then
736 -- Special check for warning message to see if it should be output
738 if Is_Warning_Msg
then
740 -- Immediate return if warning message and warnings are suppressed
742 if Warnings_Suppressed
(Optr
)
743 or else Warnings_Suppressed
(Sptr
)
745 Cur_Msg
:= No_Error_Msg
;
749 -- If the flag location is in the main extended source unit
750 -- then for sure we want the warning since it definitely belongs
752 if In_Extended_Main_Source_Unit
(Sptr
) then
755 -- If the flag location is not in the main extended source unit,
756 -- then we want to eliminate the warning, unless it is in the
757 -- extended main code unit and we want warnings on the instance.
759 elsif In_Extended_Main_Code_Unit
(Sptr
)
760 and then Warn_On_Instance
764 -- Keep warning if debug flag G set
766 elsif Debug_Flag_GG
then
769 -- Here is where we delete a warning from a with'ed unit
772 Cur_Msg
:= No_Error_Msg
;
774 if not Continuation
then
782 -- If message is to be ignored in special ignore message mode, this is
783 -- where we do this special processing, bypassing message output.
785 if Ignore_Errors_Enable
> 0 then
786 if Is_Serious_Error
then
787 Handle_Serious_Error
;
793 -- If error message line length set, and this is a continuation message
794 -- then all we do is to append the text to the text of the last message
795 -- with a comma space separator.
797 if Error_Msg_Line_Length
/= 0
798 and then Continuation
800 Cur_Msg
:= Errors
.Last
;
803 Oldm
: String_Ptr
:= Errors
.Table
(Cur_Msg
).Text
;
804 Newm
: String (1 .. Oldm
'Last + 2 + Msglen
);
808 -- First copy old message to new one and free it
810 Newm
(Oldm
'Range) := Oldm
.all;
814 -- Now deal with separation between messages. Normally this
815 -- is simply comma space, but there are some special cases.
817 -- If continuation new line, then put actual NL character in msg
819 if Continuation_New_Line
then
821 Newm
(Newl
) := ASCII
.LF
;
823 -- If continuation message is enclosed in parentheses, then
824 -- special treatment (don't need a comma, and we want to combine
825 -- successive parenthetical remarks into a single one with
826 -- separating commas).
828 elsif Msg_Buffer
(1) = '(' and then Msg_Buffer
(Msglen
) = ')' then
830 -- Case where existing message ends in right paren, remove
831 -- and separate parenthetical remarks with a comma.
833 if Newm
(Newl
) = ')' then
835 Msg_Buffer
(1) := ' ';
837 -- Case where we are adding new parenthetical comment
844 -- Case where continuation not in parens and no new line
847 Newm
(Newl
+ 1 .. Newl
+ 2) := ", ";
851 -- Append new message
853 Newm
(Newl
+ 1 .. Newl
+ Msglen
) := Msg_Buffer
(1 .. Msglen
);
854 Newl
:= Newl
+ Msglen
;
855 Errors
.Table
(Cur_Msg
).Text
:= new String'(Newm (1 .. Newl));
861 -- Otherwise build error message object for new message
863 Errors.Increment_Last;
864 Cur_Msg := Errors.Last;
865 Errors.Table (Cur_Msg).Text := new String'(Msg_Buffer
(1 .. Msglen
));
866 Errors
.Table
(Cur_Msg
).Next
:= No_Error_Msg
;
867 Errors
.Table
(Cur_Msg
).Sptr
:= Sptr
;
868 Errors
.Table
(Cur_Msg
).Optr
:= Optr
;
869 Errors
.Table
(Cur_Msg
).Sfile
:= Get_Source_File_Index
(Sptr
);
870 Errors
.Table
(Cur_Msg
).Line
:= Get_Physical_Line_Number
(Sptr
);
871 Errors
.Table
(Cur_Msg
).Col
:= Get_Column_Number
(Sptr
);
872 Errors
.Table
(Cur_Msg
).Warn
:= Is_Warning_Msg
;
873 Errors
.Table
(Cur_Msg
).Style
:= Is_Style_Msg
;
874 Errors
.Table
(Cur_Msg
).Serious
:= Is_Serious_Error
;
875 Errors
.Table
(Cur_Msg
).Uncond
:= Is_Unconditional_Msg
;
876 Errors
.Table
(Cur_Msg
).Msg_Cont
:= Continuation
;
877 Errors
.Table
(Cur_Msg
).Deleted
:= False;
879 -- If immediate errors mode set, output error message now. Also output
880 -- now if the -d1 debug flag is set (so node number message comes out
881 -- just before actual error message)
883 if Debug_Flag_OO
or else Debug_Flag_1
then
886 (Errors
.Table
(Cur_Msg
).Line
, Errors
.Table
(Cur_Msg
).Sfile
, True);
888 Output_Error_Msgs
(Temp_Msg
);
890 -- If not in immediate errors mode, then we insert the message in the
891 -- error chain for later output by Finalize. The messages are sorted
892 -- first by unit (main unit comes first), and within a unit by source
893 -- location (earlier flag location first in the chain).
896 -- First a quick check, does this belong at the very end of the chain
897 -- of error messages. This saves a lot of time in the normal case if
898 -- there are lots of messages.
900 if Last_Error_Msg
/= No_Error_Msg
901 and then Errors
.Table
(Cur_Msg
).Sfile
=
902 Errors
.Table
(Last_Error_Msg
).Sfile
903 and then (Sptr
> Errors
.Table
(Last_Error_Msg
).Sptr
905 (Sptr
= Errors
.Table
(Last_Error_Msg
).Sptr
907 Optr
> Errors
.Table
(Last_Error_Msg
).Optr
))
909 Prev_Msg
:= Last_Error_Msg
;
910 Next_Msg
:= No_Error_Msg
;
912 -- Otherwise do a full sequential search for the insertion point
915 Prev_Msg
:= No_Error_Msg
;
916 Next_Msg
:= First_Error_Msg
;
917 while Next_Msg
/= No_Error_Msg
loop
919 Errors
.Table
(Cur_Msg
).Sfile
< Errors
.Table
(Next_Msg
).Sfile
;
921 if Errors
.Table
(Cur_Msg
).Sfile
=
922 Errors
.Table
(Next_Msg
).Sfile
924 exit when Sptr
< Errors
.Table
(Next_Msg
).Sptr
926 (Sptr
= Errors
.Table
(Next_Msg
).Sptr
928 Optr
< Errors
.Table
(Next_Msg
).Optr
);
931 Prev_Msg
:= Next_Msg
;
932 Next_Msg
:= Errors
.Table
(Next_Msg
).Next
;
936 -- Now we insert the new message in the error chain. The insertion
937 -- point for the message is after Prev_Msg and before Next_Msg.
939 -- The possible insertion point for the new message is after Prev_Msg
940 -- and before Next_Msg. However, this is where we do a special check
941 -- for redundant parsing messages, defined as messages posted on the
942 -- same line. The idea here is that probably such messages are junk
943 -- from the parser recovering. In full errors mode, we don't do this
944 -- deletion, but otherwise such messages are discarded at this stage.
946 if Prev_Msg
/= No_Error_Msg
947 and then Errors
.Table
(Prev_Msg
).Line
=
948 Errors
.Table
(Cur_Msg
).Line
949 and then Errors
.Table
(Prev_Msg
).Sfile
=
950 Errors
.Table
(Cur_Msg
).Sfile
951 and then Compiler_State
= Parsing
952 and then not All_Errors_Mode
954 -- Don't delete unconditional messages and at this stage,
955 -- don't delete continuation lines (we attempted to delete
956 -- those earlier if the parent message was deleted.
958 if not Errors
.Table
(Cur_Msg
).Uncond
959 and then not Continuation
961 -- Don't delete if prev msg is warning and new msg is an error.
962 -- This is because we don't want a real error masked by a
963 -- warning. In all other cases (that is parse errors for the
964 -- same line that are not unconditional) we do delete the
965 -- message. This helps to avoid junk extra messages from
966 -- cascaded parsing errors
968 if not (Errors
.Table
(Prev_Msg
).Warn
970 Errors
.Table
(Prev_Msg
).Style
)
972 (Errors
.Table
(Cur_Msg
).Warn
974 Errors
.Table
(Cur_Msg
).Style
)
976 -- All tests passed, delete the message by simply returning
977 -- without any further processing.
979 if not Continuation
then
988 -- Come here if message is to be inserted in the error chain
990 if not Continuation
then
991 Last_Killed
:= False;
994 if Prev_Msg
= No_Error_Msg
then
995 First_Error_Msg
:= Cur_Msg
;
997 Errors
.Table
(Prev_Msg
).Next
:= Cur_Msg
;
1000 Errors
.Table
(Cur_Msg
).Next
:= Next_Msg
;
1002 if Next_Msg
= No_Error_Msg
then
1003 Last_Error_Msg
:= Cur_Msg
;
1007 -- Bump appropriate statistics count
1009 if Errors
.Table
(Cur_Msg
).Warn
1010 or else Errors
.Table
(Cur_Msg
).Style
1012 Warnings_Detected
:= Warnings_Detected
+ 1;
1014 Total_Errors_Detected
:= Total_Errors_Detected
+ 1;
1016 if Errors
.Table
(Cur_Msg
).Serious
then
1017 Serious_Errors_Detected
:= Serious_Errors_Detected
+ 1;
1018 Handle_Serious_Error
;
1022 -- Terminate if max errors reached
1024 if Total_Errors_Detected
+ Warnings_Detected
= Maximum_Errors
then
1025 raise Unrecoverable_Error
;
1027 end Error_Msg_Internal
;
1033 procedure Error_Msg_N
(Msg
: String; N
: Node_Or_Entity_Id
) is
1035 Error_Msg_NEL
(Msg
, N
, N
, Sloc
(N
));
1042 procedure Error_Msg_NE
1044 N
: Node_Or_Entity_Id
;
1045 E
: Node_Or_Entity_Id
)
1048 Error_Msg_NEL
(Msg
, N
, E
, Sloc
(N
));
1055 procedure Error_Msg_NEL
1057 N
: Node_Or_Entity_Id
;
1058 E
: Node_Or_Entity_Id
;
1059 Flag_Location
: Source_Ptr
)
1062 if Special_Msg_Delete
(Msg
, N
, E
) then
1066 Test_Style_Warning_Serious_Msg
(Msg
);
1068 -- Special handling for warning messages
1070 if Is_Warning_Msg
then
1072 -- Suppress if no warnings set for either entity or node
1074 if No_Warnings
(N
) or else No_Warnings
(E
) then
1078 -- Suppress if inside loop that is known to be null
1085 while Present
(P
) loop
1086 if Nkind
(P
) = N_Loop_Statement
and then Is_Null_Loop
(P
) then
1095 -- Test for message to be output
1098 or else Msg
(Msg
'Last) = '!'
1099 or else Is_Warning_Msg
1101 or else (Msg
(Msg
'First) = '\' and not Last_Killed
)
1104 Error_Msg_Node_1
:= E
;
1105 Error_Msg
(Msg
, Flag_Location
);
1108 Last_Killed
:= True;
1111 if not Is_Warning_Msg
and then not Is_Style_Msg
then
1120 procedure Error_Msg_NW
1123 N
: Node_Or_Entity_Id
)
1127 and then In_Extended_Main_Source_Unit
(N
)
1128 and then Comes_From_Source
(N
)
1130 Error_Msg_NEL
(Msg
, N
, N
, Sloc
(N
));
1138 procedure Error_Msg_S
(Msg
: String) is
1140 Error_Msg
(Msg
, Scan_Ptr
);
1147 procedure Error_Msg_SC
(Msg
: String) is
1149 -- If we are at end of file, post the flag after the previous token
1151 if Token
= Tok_EOF
then
1154 -- For all other cases the message is posted at the current token
1158 Error_Msg
(Msg
, Token_Ptr
);
1166 procedure Error_Msg_SP
(Msg
: String) is
1168 -- Note: in the case where there is no previous token, Prev_Token_Ptr
1169 -- is set to Source_First, which is a reasonable position for the
1170 -- error flag in this situation
1172 Error_Msg
(Msg
, Prev_Token_Ptr
);
1179 procedure Finalize
(Last_Call
: Boolean) is
1185 -- Eliminate any duplicated error messages from the list. This is
1186 -- done after the fact to avoid problems with Change_Error_Text.
1188 Cur
:= First_Error_Msg
;
1189 while Cur
/= No_Error_Msg
loop
1190 Nxt
:= Errors
.Table
(Cur
).Next
;
1193 while F
/= No_Error_Msg
1194 and then Errors
.Table
(F
).Sptr
= Errors
.Table
(Cur
).Sptr
1196 Check_Duplicate_Message
(Cur
, F
);
1197 F
:= Errors
.Table
(F
).Next
;
1203 -- Mark any messages suppressed by specific warnings as Deleted
1205 Cur
:= First_Error_Msg
;
1206 while Cur
/= No_Error_Msg
loop
1207 if not Errors
.Table
(Cur
).Deleted
1208 and then Warning_Specifically_Suppressed
1209 (Errors
.Table
(Cur
).Sptr
,
1210 Errors
.Table
(Cur
).Text
)
1212 Errors
.Table
(Cur
).Deleted
:= True;
1213 Warnings_Detected
:= Warnings_Detected
- 1;
1216 Cur
:= Errors
.Table
(Cur
).Next
;
1219 Finalize_Called
:= True;
1221 -- Check consistency of specific warnings (may add warnings). We only
1222 -- do this on the last call, after all possible warnings are posted.
1225 Validate_Specific_Warnings
(Error_Msg
'Access);
1233 function First_Node
(C
: Node_Id
) return Node_Id
is
1234 L
: constant Source_Ptr
:= Sloc
(Original_Node
(C
));
1235 Sfile
: constant Source_File_Index
:= Get_Source_File_Index
(L
);
1238 Discard
: Traverse_Result
;
1240 pragma Warnings
(Off
, Discard
);
1242 function Test_Earlier
(N
: Node_Id
) return Traverse_Result
;
1243 -- Function applied to every node in the construct
1245 function Search_Tree_First
is new Traverse_Func
(Test_Earlier
);
1246 -- Create traversal function
1252 function Test_Earlier
(N
: Node_Id
) return Traverse_Result
is
1253 Loc
: constant Source_Ptr
:= Sloc
(Original_Node
(N
));
1256 -- Check for earlier. The tests for being in the same file ensures
1257 -- against strange cases of foreign code somehow being present. We
1258 -- don't want wild placement of messages if that happens, so it is
1259 -- best to just ignore this situation.
1262 and then Get_Source_File_Index
(Loc
) = Sfile
1264 Earliest
:= Original_Node
(N
);
1271 -- Start of processing for First_Node
1274 Earliest
:= Original_Node
(C
);
1275 Eloc
:= Sloc
(Earliest
);
1276 Discard
:= Search_Tree_First
(Original_Node
(C
));
1284 function First_Sloc
(N
: Node_Id
) return Source_Ptr
is
1285 SI
: constant Source_File_Index
:= Source_Index
(Get_Source_Unit
(N
));
1286 SF
: constant Source_Ptr
:= Source_First
(SI
);
1291 F
:= First_Node
(N
);
1294 -- The following circuit is a bit subtle. When we have parenthesized
1295 -- expressions, then the Sloc will not record the location of the
1296 -- paren, but we would like to post the flag on the paren. So what
1297 -- we do is to crawl up the tree from the First_Node, adjusting the
1298 -- Sloc value for any parentheses we know are present. Yes, we know
1299 -- this circuit is not 100% reliable (e.g. because we don't record
1300 -- all possible paren level values), but this is only for an error
1301 -- message so it is good enough.
1304 Paren_Loop
: for J
in 1 .. Paren_Count
(F
) loop
1306 -- We don't look more than 12 characters behind the current
1307 -- location, and in any case not past the front of the source.
1309 Search_Loop
: for K
in 1 .. 12 loop
1310 exit Search_Loop
when S
= SF
;
1312 if Source_Text
(SI
) (S
- 1) = '(' then
1316 elsif Source_Text
(SI
) (S
- 1) <= ' ' then
1322 end loop Search_Loop
;
1323 end loop Paren_Loop
;
1325 exit Node_Loop
when F
= N
;
1327 exit Node_Loop
when Nkind
(F
) not in N_Subexpr
;
1337 procedure Initialize
is
1340 First_Error_Msg
:= No_Error_Msg
;
1341 Last_Error_Msg
:= No_Error_Msg
;
1342 Serious_Errors_Detected
:= 0;
1343 Total_Errors_Detected
:= 0;
1344 Warnings_Detected
:= 0;
1345 Cur_Msg
:= No_Error_Msg
;
1348 -- Initialize warnings table, if all warnings are suppressed, supply
1349 -- an initial dummy entry covering all possible source locations.
1352 Specific_Warnings
.Init
;
1354 if Warning_Mode
= Suppress
then
1355 Warnings
.Increment_Last
;
1356 Warnings
.Table
(Warnings
.Last
).Start
:= Source_Ptr
'First;
1357 Warnings
.Table
(Warnings
.Last
).Stop
:= Source_Ptr
'Last;
1365 function No_Warnings
(N
: Node_Or_Entity_Id
) return Boolean is
1367 if Error_Posted
(N
) then
1370 elsif Nkind
(N
) in N_Entity
and then Warnings_Off
(N
) then
1373 elsif Is_Entity_Name
(N
)
1374 and then Present
(Entity
(N
))
1375 and then Warnings_Off
(Entity
(N
))
1388 function OK_Node
(N
: Node_Id
) return Boolean is
1389 K
: constant Node_Kind
:= Nkind
(N
);
1392 if Error_Posted
(N
) then
1395 elsif K
in N_Has_Etype
1396 and then Present
(Etype
(N
))
1397 and then Error_Posted
(Etype
(N
))
1402 or else K
= N_Attribute_Reference
1403 or else K
= N_Character_Literal
1404 or else K
= N_Expanded_Name
1405 or else K
= N_Identifier
1406 or else K
= N_Operator_Symbol
)
1407 and then Present
(Entity
(N
))
1408 and then Error_Posted
(Entity
(N
))
1416 ---------------------
1417 -- Output_Messages --
1418 ---------------------
1420 procedure Output_Messages
is
1424 procedure Write_Error_Summary
;
1425 -- Write error summary
1427 procedure Write_Header
(Sfile
: Source_File_Index
);
1428 -- Write header line (compiling or checking given file)
1430 procedure Write_Max_Errors
;
1431 -- Write message if max errors reached
1433 -------------------------
1434 -- Write_Error_Summary --
1435 -------------------------
1437 procedure Write_Error_Summary
is
1439 -- Extra blank line if error messages or source listing were output
1441 if Total_Errors_Detected
+ Warnings_Detected
> 0
1447 -- Message giving number of lines read and number of errors detected.
1448 -- This normally goes to Standard_Output. The exception is when brief
1449 -- mode is not set, verbose mode (or full list mode) is set, and
1450 -- there are errors. In this case we send the message to standard
1451 -- error to make sure that *something* appears on standard error in
1452 -- an error situation.
1454 -- Formerly, only the "# errors" suffix was sent to stderr, whereas
1455 -- "# lines:" appeared on stdout. This caused problems on VMS when
1456 -- the stdout buffer was flushed, giving an extra line feed after
1459 if Total_Errors_Detected
+ Warnings_Detected
/= 0
1460 and then not Brief_Output
1461 and then (Verbose_Mode
or Full_List
)
1466 -- Message giving total number of lines
1469 Write_Int
(Num_Source_Lines
(Main_Source_File
));
1471 if Num_Source_Lines
(Main_Source_File
) = 1 then
1472 Write_Str
(" line: ");
1474 Write_Str
(" lines: ");
1477 if Total_Errors_Detected
= 0 then
1478 Write_Str
("No errors");
1480 elsif Total_Errors_Detected
= 1 then
1481 Write_Str
("1 error");
1484 Write_Int
(Total_Errors_Detected
);
1485 Write_Str
(" errors");
1488 if Warnings_Detected
/= 0 then
1490 Write_Int
(Warnings_Detected
);
1491 Write_Str
(" warning");
1493 if Warnings_Detected
/= 1 then
1497 if Warning_Mode
= Treat_As_Error
then
1498 Write_Str
(" (treated as error");
1500 if Warnings_Detected
/= 1 then
1509 Set_Standard_Output
;
1510 end Write_Error_Summary
;
1516 procedure Write_Header
(Sfile
: Source_File_Index
) is
1518 if Verbose_Mode
or Full_List
then
1519 if Original_Operating_Mode
= Generate_Code
then
1520 Write_Str
("Compiling: ");
1522 Write_Str
("Checking: ");
1525 Write_Name
(Full_File_Name
(Sfile
));
1527 if not Debug_Flag_7
then
1528 Write_Str
(" (source file time stamp: ");
1529 Write_Time_Stamp
(Sfile
);
1537 ----------------------
1538 -- Write_Max_Errors --
1539 ----------------------
1541 procedure Write_Max_Errors
is
1543 if Maximum_Errors
/= 0
1544 and then Total_Errors_Detected
+ Warnings_Detected
= Maximum_Errors
1547 Write_Str
("fatal error: maximum errors reached");
1549 Set_Standard_Output
;
1551 end Write_Max_Errors
;
1553 -- Start of processing for Output_Messages
1556 -- Error if Finalize has not been called
1558 if not Finalize_Called
then
1559 raise Program_Error
;
1562 -- Reset current error source file if the main unit has a pragma
1563 -- Source_Reference. This ensures outputting the proper name of
1564 -- the source file in this situation.
1566 if Main_Source_File
= No_Source_File
1567 or else Num_SRef_Pragmas
(Main_Source_File
) /= 0
1569 Current_Error_Source_File
:= No_Source_File
;
1574 if Brief_Output
or (not Full_List
and not Verbose_Mode
) then
1577 E
:= First_Error_Msg
;
1578 while E
/= No_Error_Msg
loop
1579 if not Errors
.Table
(E
).Deleted
and then not Debug_Flag_KK
then
1580 if Full_Path_Name_For_Brief_Errors
then
1581 Write_Name
(Full_Ref_Name
(Errors
.Table
(E
).Sfile
));
1583 Write_Name
(Reference_Name
(Errors
.Table
(E
).Sfile
));
1587 Write_Int
(Int
(Physical_To_Logical
1588 (Errors
.Table
(E
).Line
,
1589 Errors
.Table
(E
).Sfile
)));
1592 if Errors
.Table
(E
).Col
< 10 then
1596 Write_Int
(Int
(Errors
.Table
(E
).Col
));
1598 Output_Msg_Text
(E
);
1602 E
:= Errors
.Table
(E
).Next
;
1605 Set_Standard_Output
;
1608 -- Full source listing case
1611 List_Pragmas_Index
:= 1;
1612 List_Pragmas_Mode
:= True;
1613 E
:= First_Error_Msg
;
1615 -- Normal case, to stdout (copyright notice already output)
1617 if Full_List_File_Name
= null then
1618 if not Debug_Flag_7
then
1625 Create_List_File_Access
.all (Full_List_File_Name
.all);
1626 Set_Special_Output
(Write_List_Info_Access
.all'Access);
1628 -- Write copyright notice to file
1630 if not Debug_Flag_7
then
1631 Write_Str
("GNAT ");
1632 Write_Str
(Gnat_Version_String
);
1634 Write_Str
("Copyright 1992-" &
1636 ", Free Software Foundation, Inc.");
1641 -- First list extended main source file units with errors
1643 -- Note: if debug flag d.m is set, only the main source is listed
1645 for U
in Main_Unit
.. Last_Unit
loop
1646 if In_Extended_Main_Source_Unit
(Cunit_Entity
(U
))
1647 and then (U
= Main_Unit
or else not Debug_Flag_Dot_M
)
1650 Sfile
: constant Source_File_Index
:= Source_Index
(U
);
1654 Write_Header
(Sfile
);
1657 -- Normally, we don't want an "error messages from file"
1658 -- message when listing the entire file, so we set the
1659 -- current source file as the current error source file.
1660 -- However, the old style of doing things was to list this
1661 -- message if pragma Source_Reference is present, even for
1662 -- the main unit. Since the purpose of the -gnatd.m switch
1663 -- is to duplicate the old behavior, we skip the reset if
1664 -- this debug flag is set.
1666 if not Debug_Flag_Dot_M
then
1667 Current_Error_Source_File
:= Sfile
;
1670 for N
in 1 .. Last_Source_Line
(Sfile
) loop
1671 while E
/= No_Error_Msg
1672 and then Errors
.Table
(E
).Deleted
1674 E
:= Errors
.Table
(E
).Next
;
1679 and then Errors
.Table
(E
).Line
= N
1680 and then Errors
.Table
(E
).Sfile
= Sfile
;
1682 Output_Source_Line
(N
, Sfile
, Err_Flag
);
1685 Output_Error_Msgs
(E
);
1687 if not Debug_Flag_2
then
1696 -- Then output errors, if any, for subsidiary units not in the
1697 -- main extended unit.
1699 -- Note: if debug flag d.m set, include errors for any units other
1700 -- than the main unit in the extended source unit (e.g. spec and
1701 -- subunits for a body).
1703 while E
/= No_Error_Msg
1704 and then (not In_Extended_Main_Source_Unit
(Errors
.Table
(E
).Sptr
)
1707 and then Get_Source_Unit
1708 (Errors
.Table
(E
).Sptr
) /= Main_Unit
))
1710 if Errors
.Table
(E
).Deleted
then
1711 E
:= Errors
.Table
(E
).Next
;
1716 (Errors
.Table
(E
).Line
, Errors
.Table
(E
).Sfile
, True);
1717 Output_Error_Msgs
(E
);
1721 -- If output to file, write extra copy of error summary to the
1722 -- output file, and then close it.
1724 if Full_List_File_Name
/= null then
1725 Write_Error_Summary
;
1727 Close_List_File_Access
.all;
1728 Cancel_Special_Output
;
1732 -- Verbose mode (error lines only with error flags). Normally this is
1733 -- ignored in full list mode, unless we are listing to a file, in which
1734 -- case we still generate -gnatv output to standard output.
1737 and then (not Full_List
or else Full_List_File_Name
/= null)
1740 Write_Header
(Main_Source_File
);
1741 E
:= First_Error_Msg
;
1743 -- Loop through error lines
1745 while E
/= No_Error_Msg
loop
1746 if Errors
.Table
(E
).Deleted
then
1747 E
:= Errors
.Table
(E
).Next
;
1751 (Errors
.Table
(E
).Line
, Errors
.Table
(E
).Sfile
, True);
1752 Output_Error_Msgs
(E
);
1757 -- Output error summary if verbose or full list mode
1759 if Verbose_Mode
or else Full_List
then
1760 Write_Error_Summary
;
1765 if Warning_Mode
= Treat_As_Error
then
1766 Total_Errors_Detected
:= Total_Errors_Detected
+ Warnings_Detected
;
1767 Warnings_Detected
:= 0;
1769 end Output_Messages
;
1771 ------------------------
1772 -- Output_Source_Line --
1773 ------------------------
1775 procedure Output_Source_Line
1776 (L
: Physical_Line_Number
;
1777 Sfile
: Source_File_Index
;
1783 Line_Number_Output
: Boolean := False;
1784 -- Set True once line number is output
1787 if Sfile
/= Current_Error_Source_File
then
1788 Write_Str
("==============Error messages for ");
1790 case Sinput
.File_Type
(Sfile
) is
1792 Write_Str
("source");
1794 when Sinput
.Config
=>
1795 Write_Str
("configuration pragmas");
1798 Write_Str
("symbol definition");
1800 when Sinput
.Preproc
=>
1801 Write_Str
("preprocessing data");
1804 Write_Str
(" file: ");
1805 Write_Name
(Full_File_Name
(Sfile
));
1808 if Num_SRef_Pragmas
(Sfile
) > 0 then
1809 Write_Str
("--------------Line numbers from file: ");
1810 Write_Name
(Full_Ref_Name
(Sfile
));
1811 Write_Str
(" (starting at line ");
1812 Write_Int
(Int
(First_Mapped_Line
(Sfile
)));
1817 Current_Error_Source_File
:= Sfile
;
1820 if Errs
or List_Pragmas_Mode
then
1821 Output_Line_Number
(Physical_To_Logical
(L
, Sfile
));
1822 Line_Number_Output
:= True;
1825 S
:= Line_Start
(L
, Sfile
);
1828 C
:= Source_Text
(Sfile
) (S
);
1829 exit when C
= ASCII
.LF
or else C
= ASCII
.CR
or else C
= EOF
;
1831 -- Deal with matching entry in List_Pragmas table
1834 and then List_Pragmas_Index
<= List_Pragmas
.Last
1835 and then S
= List_Pragmas
.Table
(List_Pragmas_Index
).Ploc
1837 case List_Pragmas
.Table
(List_Pragmas_Index
).Ptyp
is
1841 -- Ignore if on line with errors so that error flags
1842 -- get properly listed with the error line .
1845 Write_Char
(ASCII
.FF
);
1849 List_Pragmas_Mode
:= True;
1851 if not Line_Number_Output
then
1852 Output_Line_Number
(Physical_To_Logical
(L
, Sfile
));
1853 Line_Number_Output
:= True;
1860 List_Pragmas_Mode
:= False;
1863 List_Pragmas_Index
:= List_Pragmas_Index
+ 1;
1865 -- Normal case (no matching entry in List_Pragmas table)
1868 if Errs
or List_Pragmas_Mode
then
1876 -- If we have output a source line, then add the line terminator, with
1877 -- training spaces preserved (so we output the line exactly as input).
1879 if Line_Number_Output
then
1880 Write_Eol_Keep_Blanks
;
1882 end Output_Source_Line
;
1884 -----------------------------
1885 -- Remove_Warning_Messages --
1886 -----------------------------
1888 procedure Remove_Warning_Messages
(N
: Node_Id
) is
1890 function Check_For_Warning
(N
: Node_Id
) return Traverse_Result
;
1891 -- This function checks one node for a possible warning message
1893 function Check_All_Warnings
is new Traverse_Func
(Check_For_Warning
);
1894 -- This defines the traversal operation
1896 -----------------------
1897 -- Check_For_Warning --
1898 -----------------------
1900 function Check_For_Warning
(N
: Node_Id
) return Traverse_Result
is
1901 Loc
: constant Source_Ptr
:= Sloc
(N
);
1904 function To_Be_Removed
(E
: Error_Msg_Id
) return Boolean;
1905 -- Returns True for a message that is to be removed. Also adjusts
1906 -- warning count appropriately.
1912 function To_Be_Removed
(E
: Error_Msg_Id
) return Boolean is
1914 if E
/= No_Error_Msg
1916 -- Don't remove if location does not match
1918 and then Errors
.Table
(E
).Optr
= Loc
1920 -- Don't remove if not warning message. Note that we do not
1921 -- remove style messages here. They are warning messages but
1922 -- not ones we want removed in this context.
1924 and then Errors
.Table
(E
).Warn
1926 -- Don't remove unconditional messages
1928 and then not Errors
.Table
(E
).Uncond
1930 Warnings_Detected
:= Warnings_Detected
- 1;
1933 -- No removal required
1940 -- Start of processing for Check_For_Warnings
1943 while To_Be_Removed
(First_Error_Msg
) loop
1944 First_Error_Msg
:= Errors
.Table
(First_Error_Msg
).Next
;
1947 if First_Error_Msg
= No_Error_Msg
then
1948 Last_Error_Msg
:= No_Error_Msg
;
1951 E
:= First_Error_Msg
;
1952 while E
/= No_Error_Msg
loop
1953 while To_Be_Removed
(Errors
.Table
(E
).Next
) loop
1954 Errors
.Table
(E
).Next
:=
1955 Errors
.Table
(Errors
.Table
(E
).Next
).Next
;
1957 if Errors
.Table
(E
).Next
= No_Error_Msg
then
1958 Last_Error_Msg
:= E
;
1962 E
:= Errors
.Table
(E
).Next
;
1965 if Nkind
(N
) = N_Raise_Constraint_Error
1966 and then Original_Node
(N
) /= N
1967 and then No
(Condition
(N
))
1969 -- Warnings may have been posted on subexpressions of
1970 -- the original tree. We place the original node back
1971 -- on the tree to remove those warnings, whose sloc
1972 -- do not match those of any node in the current tree.
1973 -- Given that we are in unreachable code, this modification
1974 -- to the tree is harmless.
1977 Status
: Traverse_Result
;
1980 if Is_List_Member
(N
) then
1981 Set_Condition
(N
, Original_Node
(N
));
1982 Status
:= Check_All_Warnings
(Condition
(N
));
1984 Rewrite
(N
, Original_Node
(N
));
1985 Status
:= Check_All_Warnings
(N
);
1994 end Check_For_Warning
;
1996 -- Start of processing for Remove_Warning_Messages
1999 if Warnings_Detected
/= 0 then
2001 Discard
: Traverse_Result
;
2002 pragma Warnings
(Off
, Discard
);
2005 Discard
:= Check_All_Warnings
(N
);
2008 end Remove_Warning_Messages
;
2010 procedure Remove_Warning_Messages
(L
: List_Id
) is
2013 if Is_Non_Empty_List
(L
) then
2016 while Present
(Stat
) loop
2017 Remove_Warning_Messages
(Stat
);
2021 end Remove_Warning_Messages
;
2023 ---------------------------
2024 -- Set_Identifier_Casing --
2025 ---------------------------
2027 procedure Set_Identifier_Casing
2028 (Identifier_Name
: System
.Address
;
2029 File_Name
: System
.Address
)
2031 type Big_String
is array (Positive) of Character;
2032 type Big_String_Ptr
is access all Big_String
;
2034 function To_Big_String_Ptr
is new Unchecked_Conversion
2035 (System
.Address
, Big_String_Ptr
);
2037 Ident
: constant Big_String_Ptr
:= To_Big_String_Ptr
(Identifier_Name
);
2038 File
: constant Big_String_Ptr
:= To_Big_String_Ptr
(File_Name
);
2041 Desired_Case
: Casing_Type
:= Mixed_Case
;
2042 -- Casing required for result. Default value of Mixed_Case is used if
2043 -- for some reason we cannot find the right file name in the table.
2046 -- Get length of file name
2049 while File
(Flen
+ 1) /= ASCII
.NUL
loop
2053 -- Loop through file names to find matching one. This is a bit slow,
2054 -- but we only do it in error situations so it is not so terrible.
2055 -- Note that if the loop does not exit, then the desired case will
2056 -- be left set to Mixed_Case, this can happen if the name was not
2057 -- in canonical form, and gets canonicalized on VMS. Possibly we
2058 -- could fix this by unconditinally canonicalizing these names ???
2060 for J
in 1 .. Last_Source_File
loop
2061 Get_Name_String
(Full_Debug_Name
(J
));
2064 and then Name_Buffer
(1 .. Name_Len
) = String (File
(1 .. Flen
))
2066 Desired_Case
:= Identifier_Casing
(J
);
2071 -- Copy identifier as given to Name_Buffer
2073 for J
in Name_Buffer
'Range loop
2074 Name_Buffer
(J
) := Ident
(J
);
2076 if Name_Buffer
(J
) = ASCII
.Nul
then
2082 Set_Casing
(Desired_Case
);
2083 end Set_Identifier_Casing
;
2085 -----------------------
2086 -- Set_Ignore_Errors --
2087 -----------------------
2089 procedure Set_Ignore_Errors
(To
: Boolean) is
2091 Errors_Must_Be_Ignored
:= To
;
2092 end Set_Ignore_Errors
;
2094 ------------------------------
2095 -- Set_Msg_Insertion_Column --
2096 ------------------------------
2098 procedure Set_Msg_Insertion_Column
is
2100 if Style
.RM_Column_Check
then
2101 Set_Msg_Str
(" in column ");
2102 Set_Msg_Int
(Int
(Error_Msg_Col
) + 1);
2104 end Set_Msg_Insertion_Column
;
2106 ----------------------------
2107 -- Set_Msg_Insertion_Node --
2108 ----------------------------
2110 procedure Set_Msg_Insertion_Node
is
2115 Error_Msg_Node_1
= Error
2116 or else Error_Msg_Node_1
= Any_Type
;
2118 if Error_Msg_Node_1
= Empty
then
2119 Set_Msg_Blank_Conditional
;
2120 Set_Msg_Str
("<empty>");
2122 elsif Error_Msg_Node_1
= Error
then
2124 Set_Msg_Str
("<error>");
2126 elsif Error_Msg_Node_1
= Standard_Void_Type
then
2128 Set_Msg_Str
("procedure name");
2131 Set_Msg_Blank_Conditional
;
2135 K
:= Nkind
(Error_Msg_Node_1
);
2137 -- If we have operator case, skip quotes since name of operator
2138 -- itself will supply the required quotations. An operator can be
2139 -- an applied use in an expression or an explicit operator symbol,
2140 -- or an identifier whose name indicates it is an operator.
2143 or else K
= N_Operator_Symbol
2144 or else K
= N_Defining_Operator_Symbol
2145 or else ((K
= N_Identifier
or else K
= N_Defining_Identifier
)
2146 and then Is_Operator_Name
(Chars
(Error_Msg_Node_1
)))
2148 Set_Msg_Node
(Error_Msg_Node_1
);
2150 -- Normal case, not an operator, surround with quotes
2154 Set_Qualification
(Error_Msg_Qual_Level
, Error_Msg_Node_1
);
2155 Set_Msg_Node
(Error_Msg_Node_1
);
2160 -- The following assignment ensures that a second ampersand insertion
2161 -- character will correspond to the Error_Msg_Node_2 parameter. We
2162 -- suppress possible validity checks in case operating in -gnatVa mode,
2163 -- and Error_Msg_Node_2 is not needed and has not been set.
2166 pragma Suppress
(Range_Check
);
2168 Error_Msg_Node_1
:= Error_Msg_Node_2
;
2170 end Set_Msg_Insertion_Node
;
2172 --------------------------------------
2173 -- Set_Msg_Insertion_Type_Reference --
2174 --------------------------------------
2176 procedure Set_Msg_Insertion_Type_Reference
(Flag
: Source_Ptr
) is
2182 if Error_Msg_Node_1
= Standard_Void_Type
then
2183 Set_Msg_Str
("package or procedure name");
2186 elsif Error_Msg_Node_1
= Standard_Exception_Type
then
2187 Set_Msg_Str
("exception name");
2190 elsif Error_Msg_Node_1
= Any_Access
2191 or else Error_Msg_Node_1
= Any_Array
2192 or else Error_Msg_Node_1
= Any_Boolean
2193 or else Error_Msg_Node_1
= Any_Character
2194 or else Error_Msg_Node_1
= Any_Composite
2195 or else Error_Msg_Node_1
= Any_Discrete
2196 or else Error_Msg_Node_1
= Any_Fixed
2197 or else Error_Msg_Node_1
= Any_Integer
2198 or else Error_Msg_Node_1
= Any_Modular
2199 or else Error_Msg_Node_1
= Any_Numeric
2200 or else Error_Msg_Node_1
= Any_Real
2201 or else Error_Msg_Node_1
= Any_Scalar
2202 or else Error_Msg_Node_1
= Any_String
2204 Get_Unqualified_Decoded_Name_String
(Chars
(Error_Msg_Node_1
));
2205 Set_Msg_Name_Buffer
;
2208 elsif Error_Msg_Node_1
= Universal_Real
then
2209 Set_Msg_Str
("type universal real");
2212 elsif Error_Msg_Node_1
= Universal_Integer
then
2213 Set_Msg_Str
("type universal integer");
2216 elsif Error_Msg_Node_1
= Universal_Fixed
then
2217 Set_Msg_Str
("type universal fixed");
2221 -- Special case of anonymous array
2223 if Nkind
(Error_Msg_Node_1
) in N_Entity
2224 and then Is_Array_Type
(Error_Msg_Node_1
)
2225 and then Present
(Related_Array_Object
(Error_Msg_Node_1
))
2227 Set_Msg_Str
("type of ");
2228 Set_Msg_Node
(Related_Array_Object
(Error_Msg_Node_1
));
2229 Set_Msg_Str
(" declared");
2230 Set_Msg_Insertion_Line_Number
2231 (Sloc
(Related_Array_Object
(Error_Msg_Node_1
)), Flag
);
2235 -- If we fall through, it is not a special case, so first output
2236 -- the name of the type, preceded by private for a private type
2238 if Is_Private_Type
(Error_Msg_Node_1
) then
2239 Set_Msg_Str
("private type ");
2241 Set_Msg_Str
("type ");
2244 Ent
:= Error_Msg_Node_1
;
2246 if Is_Internal_Name
(Chars
(Ent
)) then
2247 Unwind_Internal_Type
(Ent
);
2250 -- Types in Standard are displayed as "Standard.name"
2252 if Sloc
(Ent
) <= Standard_Location
then
2254 Set_Msg_Str
("Standard.");
2259 -- Types in other language defined units are displayed as
2260 -- "package-name.type-name"
2263 Is_Predefined_File_Name
(Unit_File_Name
(Get_Source_Unit
(Ent
)))
2265 Get_Unqualified_Decoded_Name_String
2266 (Unit_Name
(Get_Source_Unit
(Ent
)));
2267 Name_Len
:= Name_Len
- 2;
2269 Set_Casing
(Mixed_Case
);
2270 Set_Msg_Name_Buffer
;
2272 Set_Casing
(Mixed_Case
);
2277 -- All other types display as "type name" defined at line xxx
2278 -- possibly qualified if qualification is requested.
2282 Set_Qualification
(Error_Msg_Qual_Level
, Ent
);
2286 -- If Ent is an anonymous subprogram type, there is no name
2287 -- to print, so remove enclosing quotes.
2289 if Buffer_Ends_With
("""") then
2290 Buffer_Remove
("""");
2296 -- If the original type did not come from a predefined
2297 -- file, add the location where the type was defined.
2299 if Sloc
(Error_Msg_Node_1
) > Standard_Location
2301 not Is_Predefined_File_Name
2302 (Unit_File_Name
(Get_Source_Unit
(Error_Msg_Node_1
)))
2304 Set_Msg_Str
(" defined");
2305 Set_Msg_Insertion_Line_Number
(Sloc
(Error_Msg_Node_1
), Flag
);
2307 -- If it did come from a predefined file, deal with the case where
2308 -- this was a file with a generic instantiation from elsewhere.
2311 if Sloc
(Error_Msg_Node_1
) > Standard_Location
then
2313 Iloc
: constant Source_Ptr
:=
2314 Instantiation_Location
(Sloc
(Error_Msg_Node_1
));
2317 if Iloc
/= No_Location
2318 and then not Suppress_Instance_Location
2320 Set_Msg_Str
(" from instance");
2321 Set_Msg_Insertion_Line_Number
(Iloc
, Flag
);
2326 end Set_Msg_Insertion_Type_Reference
;
2328 ---------------------------------
2329 -- Set_Msg_Insertion_Unit_Name --
2330 ---------------------------------
2332 procedure Set_Msg_Insertion_Unit_Name
(Suffix
: Boolean := True) is
2334 if Error_Msg_Unit_1
= No_Unit_Name
then
2337 elsif Error_Msg_Unit_1
= Error_Unit_Name
then
2339 Set_Msg_Str
("<error>");
2342 Get_Unit_Name_String
(Error_Msg_Unit_1
, Suffix
);
2345 Set_Msg_Name_Buffer
;
2349 -- The following assignment ensures that a second percent insertion
2350 -- character will correspond to the Error_Msg_Unit_2 parameter. We
2351 -- suppress possible validity checks in case operating in -gnatVa mode,
2352 -- and Error_Msg_Unit_2 is not needed and has not been set.
2355 pragma Suppress
(Range_Check
);
2357 Error_Msg_Unit_1
:= Error_Msg_Unit_2
;
2359 end Set_Msg_Insertion_Unit_Name
;
2365 procedure Set_Msg_Node
(Node
: Node_Id
) is
2370 if Nkind
(Node
) = N_Designator
then
2371 Set_Msg_Node
(Name
(Node
));
2373 Set_Msg_Node
(Identifier
(Node
));
2376 elsif Nkind
(Node
) = N_Defining_Program_Unit_Name
then
2377 Set_Msg_Node
(Name
(Node
));
2379 Set_Msg_Node
(Defining_Identifier
(Node
));
2382 elsif Nkind
(Node
) = N_Selected_Component
then
2383 Set_Msg_Node
(Prefix
(Node
));
2385 Set_Msg_Node
(Selector_Name
(Node
));
2389 -- The only remaining possibilities are identifiers, defining
2390 -- identifiers, pragmas, and pragma argument associations, i.e.
2391 -- nodes that have a Chars field.
2393 -- Internal names generally represent something gone wrong. An exception
2394 -- is the case of internal type names, where we try to find a reasonable
2395 -- external representation for the external name
2397 if Is_Internal_Name
(Chars
(Node
))
2399 ((Is_Entity_Name
(Node
)
2400 and then Present
(Entity
(Node
))
2401 and then Is_Type
(Entity
(Node
)))
2403 (Nkind
(Node
) = N_Defining_Identifier
and then Is_Type
(Node
)))
2405 if Nkind
(Node
) = N_Identifier
then
2406 Ent
:= Entity
(Node
);
2411 -- If the type is the designated type of an access_to_subprogram,
2412 -- there is no name to provide in the call.
2414 if Ekind
(Ent
) = E_Subprogram_Type
then
2417 Unwind_Internal_Type
(Ent
);
2422 Nam
:= Chars
(Node
);
2425 -- At this stage, the name to output is in Nam
2427 Get_Unqualified_Decoded_Name_String
(Nam
);
2429 -- Remove trailing upper case letters from the name (useful for
2430 -- dealing with some cases of internal names.
2432 while Name_Len
> 1 and then Name_Buffer
(Name_Len
) in 'A' .. 'Z' loop
2433 Name_Len
:= Name_Len
- 1;
2436 -- If we have any of the names from standard that start with the
2437 -- characters "any " (e.g. Any_Type), then kill the message since
2438 -- almost certainly it is a junk cascaded message.
2441 and then Name_Buffer
(1 .. 4) = "any "
2443 Kill_Message
:= True;
2446 -- Now we have to set the proper case. If we have a source location
2447 -- then do a check to see if the name in the source is the same name
2448 -- as the name in the Names table, except for possible differences
2449 -- in case, which is the case when we can copy from the source.
2452 Src_Loc
: constant Source_Ptr
:= Sloc
(Error_Msg_Node_1
);
2453 Sbuffer
: Source_Buffer_Ptr
;
2455 Src_Ptr
: Source_Ptr
;
2461 -- For standard locations, always use mixed case
2463 if Src_Loc
<= No_Location
2464 or else Sloc
(Node
) <= No_Location
2466 Set_Casing
(Mixed_Case
);
2469 -- Determine if the reference we are dealing with corresponds
2470 -- to text at the point of the error reference. This will often
2471 -- be the case for simple identifier references, and is the case
2472 -- where we can copy the spelling from the source.
2474 Sbuffer
:= Source_Text
(Get_Source_File_Index
(Src_Loc
));
2476 while Ref_Ptr
<= Name_Len
loop
2478 Fold_Lower
(Sbuffer
(Src_Ptr
)) /=
2479 Fold_Lower
(Name_Buffer
(Ref_Ptr
));
2480 Ref_Ptr
:= Ref_Ptr
+ 1;
2481 Src_Ptr
:= Src_Ptr
+ 1;
2484 -- If we get through the loop without a mismatch, then output
2485 -- the name the way it is spelled in the source program
2487 if Ref_Ptr
> Name_Len
then
2490 for J
in 1 .. Name_Len
loop
2491 Name_Buffer
(J
) := Sbuffer
(Src_Ptr
);
2492 Src_Ptr
:= Src_Ptr
+ 1;
2495 -- Otherwise set the casing using the default identifier casing
2498 Set_Casing
(Identifier_Casing
(Flag_Source
), Mixed_Case
);
2503 Set_Msg_Name_Buffer
;
2511 procedure Set_Msg_Text
(Text
: String; Flag
: Source_Ptr
) is
2512 C
: Character; -- Current character
2513 P
: Natural; -- Current index;
2516 Manual_Quote_Mode
:= False;
2517 Is_Unconditional_Msg
:= False;
2519 Flag_Source
:= Get_Source_File_Index
(Flag
);
2522 while P
<= Text
'Last loop
2526 -- Check for insertion character or sequence
2530 if P
<= Text
'Last and then Text
(P
) = '%' then
2532 Set_Msg_Insertion_Name_Literal
;
2534 Set_Msg_Insertion_Name
;
2538 if P
<= Text
'Last and then Text
(P
) = '$' then
2540 Set_Msg_Insertion_Unit_Name
(Suffix
=> False);
2543 Set_Msg_Insertion_Unit_Name
;
2547 Set_Msg_Insertion_File_Name
;
2550 Set_Msg_Insertion_Type_Reference
(Flag
);
2553 Set_Msg_Insertion_Reserved_Name
;
2556 Set_Msg_Insertion_Node
;
2559 Set_Msg_Insertion_Line_Number
(Error_Msg_Sloc
, Flag
);
2562 Continuation
:= True;
2564 if Text
(P
) = '\' then
2565 Continuation_New_Line
:= True;
2570 Set_Msg_Insertion_Column
;
2573 Set_Msg_Insertion_Run_Time_Name
;
2576 Set_Msg_Insertion_Uint
;
2579 Manual_Quote_Mode
:= not Manual_Quote_Mode
;
2583 Is_Unconditional_Msg
:= True;
2586 null; -- already dealt with
2589 null; -- already dealt with
2592 null; -- already dealt with
2595 Set_Msg_Char
(Text
(P
));
2599 Set_Msg_Str
(Error_Msg_String
(1 .. Error_Msg_Strlen
));
2601 -- Upper case letter
2605 -- Start of reserved word if two or more
2607 if P
<= Text
'Last and then Text
(P
) in 'A' .. 'Z' then
2609 Set_Msg_Insertion_Reserved_Word
(Text
, P
);
2611 -- Single upper case letter is just inserted
2617 -- Normal character with no special treatment
2631 procedure Set_Posted
(N
: Node_Id
) is
2635 if Is_Serious_Error
then
2637 -- We always set Error_Posted on the node itself
2639 Set_Error_Posted
(N
);
2641 -- If it is a subexpression, then set Error_Posted on parents
2642 -- up to and including the first non-subexpression construct. This
2643 -- helps avoid cascaded error messages within a single expression.
2649 Set_Error_Posted
(P
);
2650 exit when Nkind
(P
) not in N_Subexpr
;
2653 -- A special check, if we just posted an error on an attribute
2654 -- definition clause, then also set the entity involved as posted.
2655 -- For example, this stops complaining about the alignment after
2656 -- complaining about the size, which is likely to be useless.
2658 if Nkind
(P
) = N_Attribute_Definition_Clause
then
2659 if Is_Entity_Name
(Name
(P
)) then
2660 Set_Error_Posted
(Entity
(Name
(P
)));
2666 -----------------------
2667 -- Set_Qualification --
2668 -----------------------
2670 procedure Set_Qualification
(N
: Nat
; E
: Entity_Id
) is
2672 if N
/= 0 and then Scope
(E
) /= Standard_Standard
then
2673 Set_Qualification
(N
- 1, Scope
(E
));
2674 Set_Msg_Node
(Scope
(E
));
2677 end Set_Qualification
;
2679 ------------------------
2680 -- Special_Msg_Delete --
2681 ------------------------
2683 function Special_Msg_Delete
2685 N
: Node_Or_Entity_Id
;
2686 E
: Node_Or_Entity_Id
) return Boolean
2689 -- Never delete messages in -gnatdO mode
2691 if Debug_Flag_OO
then
2694 -- When an atomic object refers to a non-atomic type in the same
2695 -- scope, we implicitly make the type atomic. In the non-error
2696 -- case this is surely safe (and in fact prevents an error from
2697 -- occurring if the type is not atomic by default). But if the
2698 -- object cannot be made atomic, then we introduce an extra junk
2699 -- message by this manipulation, which we get rid of here.
2701 -- We identify this case by the fact that it references a type for
2702 -- which Is_Atomic is set, but there is no Atomic pragma setting it.
2704 elsif Msg
= "atomic access to & cannot be guaranteed"
2705 and then Is_Type
(E
)
2706 and then Is_Atomic
(E
)
2707 and then No
(Get_Rep_Pragma
(E
, Name_Atomic
))
2711 -- When a size is wrong for a frozen type there is no explicit
2712 -- size clause, and other errors have occurred, suppress the
2713 -- message, since it is likely that this size error is a cascaded
2714 -- result of other errors. The reason we eliminate unfrozen types
2715 -- is that messages issued before the freeze type are for sure OK.
2717 elsif Msg
= "size for& too small, minimum allowed is ^"
2718 and then Is_Frozen
(E
)
2719 and then Serious_Errors_Detected
> 0
2720 and then Nkind
(N
) /= N_Component_Clause
2721 and then Nkind
(Parent
(N
)) /= N_Component_Clause
2723 No
(Get_Attribute_Definition_Clause
(E
, Attribute_Size
))
2725 No
(Get_Attribute_Definition_Clause
(E
, Attribute_Object_Size
))
2727 No
(Get_Attribute_Definition_Clause
(E
, Attribute_Value_Size
))
2731 -- All special tests complete, so go ahead with message
2736 end Special_Msg_Delete
;
2738 --------------------------
2739 -- Unwind_Internal_Type --
2740 --------------------------
2742 procedure Unwind_Internal_Type
(Ent
: in out Entity_Id
) is
2743 Derived
: Boolean := False;
2745 Old_Ent
: Entity_Id
;
2748 -- Undo placement of a quote, since we will put it back later
2750 Mchar
:= Msg_Buffer
(Msglen
);
2753 Msglen
:= Msglen
- 1;
2756 -- The loop here deals with recursive types, we are trying to
2757 -- find a related entity that is not an implicit type. Note
2758 -- that the check with Old_Ent stops us from getting "stuck".
2759 -- Also, we don't output the "type derived from" message more
2760 -- than once in the case where we climb up multiple levels.
2765 -- Implicit access type, use directly designated type
2766 -- In Ada 2005, the designated type may be an anonymous access to
2767 -- subprogram, in which case we can only point to its definition.
2769 if Is_Access_Type
(Ent
) then
2770 if Ekind
(Ent
) = E_Access_Subprogram_Type
2771 or else Ekind
(Ent
) = E_Anonymous_Access_Subprogram_Type
2772 or else Is_Access_Protected_Subprogram_Type
(Ent
)
2774 Ent
:= Directly_Designated_Type
(Ent
);
2776 if not Comes_From_Source
(Ent
) then
2777 if Buffer_Ends_With
("type ") then
2778 Buffer_Remove
("type ");
2781 Set_Msg_Str
("access to subprogram with profile ");
2783 elsif Ekind
(Ent
) = E_Function
then
2784 Set_Msg_Str
("access to function ");
2786 Set_Msg_Str
("access to procedure ");
2790 -- Type is access to object, named or anonymous
2793 Set_Msg_Str
("access to ");
2794 Ent
:= Directly_Designated_Type
(Ent
);
2799 elsif Is_Class_Wide_Type
(Ent
) then
2801 Ent
:= Root_Type
(Ent
);
2803 -- Use base type if this is a subtype
2805 elsif Ent
/= Base_Type
(Ent
) then
2806 Buffer_Remove
("type ");
2808 -- Avoid duplication "subtype of subtype of", and also replace
2809 -- "derived from subtype of" simply by "derived from"
2811 if not Buffer_Ends_With
("subtype of ")
2812 and then not Buffer_Ends_With
("derived from ")
2814 Set_Msg_Str
("subtype of ");
2817 Ent
:= Base_Type
(Ent
);
2819 -- If this is a base type with a first named subtype, use the
2820 -- first named subtype instead. This is not quite accurate in
2821 -- all cases, but it makes too much noise to be accurate and
2822 -- add 'Base in all cases. Note that we only do this is the
2823 -- first named subtype is not itself an internal name. This
2824 -- avoids the obvious loop (subtype->basetype->subtype) which
2825 -- would otherwise occur!)
2827 elsif Present
(Freeze_Node
(Ent
))
2828 and then Present
(First_Subtype_Link
(Freeze_Node
(Ent
)))
2830 not Is_Internal_Name
2831 (Chars
(First_Subtype_Link
(Freeze_Node
(Ent
))))
2833 Ent
:= First_Subtype_Link
(Freeze_Node
(Ent
));
2835 -- Otherwise use root type
2839 Buffer_Remove
("type ");
2841 -- Test for "subtype of type derived from" which seems
2842 -- excessive and is replaced by simply "type derived from"
2844 Buffer_Remove
("subtype of");
2846 -- Avoid duplication "type derived from type derived from"
2848 if not Buffer_Ends_With
("type derived from ") then
2849 Set_Msg_Str
("type derived from ");
2858 -- If we are stuck in a loop, get out and settle for the internal
2859 -- name after all. In this case we set to kill the message if it
2860 -- is not the first error message (we really try hard not to show
2861 -- the dirty laundry of the implementation to the poor user!)
2863 if Ent
= Old_Ent
then
2864 Kill_Message
:= True;
2868 -- Get out if we finally found a non-internal name to use
2870 exit when not Is_Internal_Name
(Chars
(Ent
));
2876 end Unwind_Internal_Type
;
2882 procedure VMS_Convert
is
2892 P
:= Msg_Buffer
'First;
2898 if Msg_Buffer
(P
) = '-' then
2899 for G
in Gnames
'Range loop
2900 L
:= Gnames
(G
)'Length;
2902 -- See if we have "-ggg switch", where ggg is Gnames entry
2904 if P
+ L
+ 7 <= Msglen
2905 and then Msg_Buffer
(P
+ 1 .. P
+ L
) = Gnames
(G
).all
2906 and then Msg_Buffer
(P
+ L
+ 1 .. P
+ L
+ 7) = " switch"
2908 -- Replace by "/vvv qualifier", where vvv is Vnames entry
2910 N
:= Vnames
(G
)'Length;
2911 Msg_Buffer
(P
+ N
+ 11 .. Msglen
+ N
- L
+ 3) :=
2912 Msg_Buffer
(P
+ L
+ 8 .. Msglen
);
2913 Msg_Buffer
(P
) := '/';
2914 Msg_Buffer
(P
+ 1 .. P
+ N
) := Vnames
(G
).all;
2915 Msg_Buffer
(P
+ N
+ 1 .. P
+ N
+ 10) := " qualifier";
2917 Msglen
:= Msglen
+ N
- L
+ 3;