1 ------------------------------------------------------------------------------
3 -- GNAT COMPILER COMPONENTS --
9 -- Copyright (C) 1992-2013, Free Software Foundation, Inc. --
11 -- GNAT is free software; you can redistribute it and/or modify it under --
12 -- terms of the GNU General Public License as published by the Free Soft- --
13 -- ware Foundation; either version 3, or (at your option) any later ver- --
14 -- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
15 -- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
16 -- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License --
17 -- for more details. You should have received a copy of the GNU General --
18 -- Public License distributed with GNAT; see file COPYING3. If not, go to --
19 -- http://www.gnu.org/licenses for a complete copy of the license. --
21 -- GNAT was originally developed by the GNAT team at New York University. --
22 -- Extensive contributions were provided by Ada Core Technologies Inc. --
24 ------------------------------------------------------------------------------
26 -- Warning: Error messages can be generated during Gigi processing by direct
27 -- calls to error message routines, so it is essential that the processing
28 -- in this body be consistent with the requirements for the Gigi processing
29 -- environment, and that in particular, no disallowed table expansion is
32 with Atree
; use Atree
;
33 with Casing
; use Casing
;
34 with Csets
; use Csets
;
35 with Debug
; use Debug
;
36 with Einfo
; use Einfo
;
37 with Erroutc
; use Erroutc
;
38 with Fname
; use Fname
;
39 with Gnatvsn
; use Gnatvsn
;
40 with Hostparm
; use Hostparm
;
43 with Nlists
; use Nlists
;
44 with Output
; use Output
;
45 with Scans
; use Scans
;
46 with Sem_Aux
; use Sem_Aux
;
47 with Sinput
; use Sinput
;
48 with Sinfo
; use Sinfo
;
49 with Snames
; use Snames
;
50 with Stand
; use Stand
;
51 with Stylesw
; use Stylesw
;
52 with Uname
; use Uname
;
54 package body Errout
is
56 Errors_Must_Be_Ignored
: Boolean := False;
57 -- Set to True by procedure Set_Ignore_Errors (True), when calls to error
58 -- message procedures should be ignored (when parsing irrelevant text in
59 -- sources being preprocessed).
61 Finalize_Called
: Boolean := False;
62 -- Set True if the Finalize routine has been called
64 Warn_On_Instance
: Boolean;
65 -- Flag set true for warning message to be posted on instance
67 ------------------------------------
68 -- Table of Non-Instance Messages --
69 ------------------------------------
71 -- This table contains an entry for every error message processed by the
72 -- Error_Msg routine that is not posted on generic (or inlined) instance.
73 -- As explained in further detail in the Error_Msg procedure body, this
74 -- table is used to avoid posting redundant messages on instances.
76 type NIM_Record
is record
80 -- Type used to store text and location of one message
82 package Non_Instance_Msgs
is new Table
.Table
(
83 Table_Component_Type
=> NIM_Record
,
84 Table_Index_Type
=> Int
,
87 Table_Increment
=> 100,
88 Table_Name
=> "Non_Instance_Msgs");
90 -----------------------
91 -- Local Subprograms --
92 -----------------------
94 procedure Error_Msg_Internal
99 -- This is the low level routine used to post messages after dealing with
100 -- the issue of messages placed on instantiations (which get broken up
101 -- into separate calls in Error_Msg). Sptr is the location on which the
102 -- flag will be placed in the output. In the case where the flag is on
103 -- the template, this points directly to the template, not to one of the
104 -- instantiation copies of the template. Optr is the original location
105 -- used to flag the error, and this may indeed point to an instantiation
106 -- copy. So typically we can see Optr pointing to the template location
107 -- in an instantiation copy when Sptr points to the source location of
108 -- the actual instantiation (i.e the line with the new). Msg_Cont is
109 -- set true if this is a continuation message.
111 function No_Warnings
(N
: Node_Or_Entity_Id
) return Boolean;
112 -- Determines if warnings should be suppressed for the given node
114 function OK_Node
(N
: Node_Id
) return Boolean;
115 -- Determines if a node is an OK node to place an error message on (return
116 -- True) or if the error message should be suppressed (return False). A
117 -- message is suppressed if the node already has an error posted on it,
118 -- or if it refers to an Etype that has an error posted on it, or if
119 -- it references an Entity that has an error posted on it.
121 procedure Output_Source_Line
122 (L
: Physical_Line_Number
;
123 Sfile
: Source_File_Index
;
125 -- Outputs text of source line L, in file S, together with preceding line
126 -- number, as described above for Output_Line_Number. The Errs parameter
127 -- indicates if there are errors attached to the line, which forces
128 -- listing on, even in the presence of pragma List (Off).
130 procedure Set_Msg_Insertion_Column
;
131 -- Handle column number insertion (@ insertion character)
133 procedure Set_Msg_Insertion_Node
;
134 -- Handle node (name from node) insertion (& insertion character)
136 procedure Set_Msg_Insertion_Type_Reference
(Flag
: Source_Ptr
);
137 -- Handle type reference (right brace insertion character). Flag is the
138 -- location of the flag, which is provided for the internal call to
139 -- Set_Msg_Insertion_Line_Number,
141 procedure Set_Msg_Insertion_Unit_Name
(Suffix
: Boolean := True);
142 -- Handle unit name insertion ($ insertion character). Depending on Boolean
143 -- parameter Suffix, (spec) or (body) is appended after the unit name.
145 procedure Set_Msg_Node
(Node
: Node_Id
);
146 -- Add the sequence of characters for the name associated with the given
147 -- node to the current message. For N_Designator, N_Selected_Component,
148 -- N_Defining_Program_Unit_Name, and N_Expanded_Name, the Prefix is
151 procedure Set_Msg_Text
(Text
: String; Flag
: Source_Ptr
);
152 -- Add a sequence of characters to the current message. The characters may
153 -- be one of the special insertion characters (see documentation in spec).
154 -- Flag is the location at which the error is to be posted, which is used
155 -- to determine whether or not the # insertion needs a file name. The
156 -- variables Msg_Buffer are set on return Msglen.
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. a type
182 -- with an internal name. It unwinds the type to try to get to something
183 -- reasonably printable, generating prefixes like "subtype of", "access
184 -- to", etc along the way in the buffer. The value in Ent on return is the
185 -- final name to be printed. Hopefully this is not an internal name, but in
186 -- some internal name cases, it is an internal name, and has to be printed
187 -- anyway (although in this case the message has been killed if possible).
188 -- The global variable Class_Flag is set to True if the resulting entity
189 -- should have 'Class appended to its name (see Add_Class procedure), and
190 -- is otherwise unchanged.
192 procedure VMS_Convert
;
193 -- This procedure has no effect if called when the host is not OpenVMS. If
194 -- the host is indeed OpenVMS, then the error message stored in Msg_Buffer
195 -- is scanned for appearances of switch names which need converting to
196 -- corresponding VMS qualifier names. See Gnames/Vnames table in Errout
197 -- spec for precise definition of the conversion that is performed by this
198 -- routine in OpenVMS mode.
200 -----------------------
201 -- Change_Error_Text --
202 -----------------------
204 procedure Change_Error_Text
(Error_Id
: Error_Msg_Id
; New_Msg
: String) is
205 Save_Next
: Error_Msg_Id
;
206 Err_Id
: Error_Msg_Id
:= Error_Id
;
209 Set_Msg_Text
(New_Msg
, Errors
.Table
(Error_Id
).Sptr
);
210 Errors
.Table
(Error_Id
).Text
:= new String'(Msg_Buffer (1 .. Msglen));
212 -- If in immediate error message mode, output modified error message now
213 -- This is just a bit tricky, because we want to output just a single
214 -- message, and the messages we modified is already linked in. We solve
215 -- this by temporarily resetting its forward pointer to empty.
217 if Debug_Flag_OO then
218 Save_Next := Errors.Table (Error_Id).Next;
219 Errors.Table (Error_Id).Next := No_Error_Msg;
222 (Errors.Table (Error_Id).Line, Errors.Table (Error_Id).Sfile, True);
223 Output_Error_Msgs (Err_Id);
224 Errors.Table (Error_Id).Next := Save_Next;
226 end Change_Error_Text;
228 ------------------------
229 -- Compilation_Errors --
230 ------------------------
232 function Compilation_Errors return Boolean is
234 if not Finalize_Called then
237 return Erroutc.Compilation_Errors;
239 end Compilation_Errors;
245 -- Error_Msg posts a flag at the given location, except that if the
246 -- Flag_Location points within a generic template and corresponds to an
247 -- instantiation of this generic template, then the actual message will be
248 -- posted on the generic instantiation, along with additional messages
249 -- referencing the generic declaration.
251 procedure Error_Msg (Msg : String; Flag_Location : Source_Ptr) is
252 Sindex : Source_File_Index;
253 -- Source index for flag location
255 Orig_Loc : Source_Ptr;
256 -- Original location of Flag_Location (i.e. location in original
257 -- template in instantiation case, otherwise unchanged).
260 -- It is a fatal error to issue an error message when scanning from the
261 -- internal source buffer (see Sinput for further documentation)
263 pragma Assert (Sinput.Source /= Internal_Source_Ptr);
265 -- Return if all errors are to be ignored
267 if Errors_Must_Be_Ignored then
271 -- If we already have messages, and we are trying to place a message at
272 -- No_Location or in package Standard, then just ignore the attempt
273 -- since we assume that what is happening is some cascaded junk. Note
274 -- that this is safe in the sense that proceeding will surely bomb.
276 if Flag_Location < First_Source_Ptr
277 and then Total_Errors_Detected > 0
282 -- Start of processing for new message
284 Sindex := Get_Source_File_Index (Flag_Location);
285 Test_Style_Warning_Serious_Unconditional_Msg (Msg);
286 Orig_Loc := Original_Location (Flag_Location);
288 -- If the current location is in an instantiation, the issue arises of
289 -- whether to post the message on the template or the instantiation.
291 -- The way we decide is to see if we have posted the same message on
292 -- the template when we compiled the template (the template is always
293 -- compiled before any instantiations). For this purpose, we use a
294 -- separate table of messages. The reason we do this is twofold:
296 -- First, the messages can get changed by various processing
297 -- including the insertion of tokens etc, making it hard to
298 -- do the comparison.
300 -- Second, we will suppress a warning on a template if it is not in
301 -- the current extended source unit. That's reasonable and means we
302 -- don't want the warning on the instantiation here either, but it
303 -- does mean that the main error table would not in any case include
306 if Flag_Location = Orig_Loc then
307 Non_Instance_Msgs.Append ((new String'(Msg
), Flag_Location
));
308 Warn_On_Instance
:= False;
310 -- Here we have an instance message
313 -- Delete if debug flag off, and this message duplicates a message
314 -- already posted on the corresponding template
316 if not Debug_Flag_GG
then
317 for J
in Non_Instance_Msgs
.First
.. Non_Instance_Msgs
.Last
loop
318 if Msg
= Non_Instance_Msgs
.Table
(J
).Msg
.all
319 and then Non_Instance_Msgs
.Table
(J
).Loc
= Orig_Loc
326 -- No duplicate, so error/warning will be posted on instance
328 Warn_On_Instance
:= Is_Warning_Msg
;
331 -- Ignore warning message that is suppressed for this location. Note
332 -- that style checks are not considered warning messages for this
336 and then Warnings_Suppressed
(Orig_Loc
) /= No_String
340 -- For style messages, check too many messages so far
343 and then Maximum_Messages
/= 0
344 and then Warnings_Detected
>= Maximum_Messages
349 -- The idea at this stage is that we have two kinds of messages
351 -- First, we have those messages that are to be placed as requested at
352 -- Flag_Location. This includes messages that have nothing to do with
353 -- generics, and also messages placed on generic templates that reflect
354 -- an error in the template itself. For such messages we simply call
355 -- Error_Msg_Internal to place the message in the requested location.
357 if Instantiation
(Sindex
) = No_Location
then
358 Error_Msg_Internal
(Msg
, Flag_Location
, Flag_Location
, False);
362 -- If we are trying to flag an error in an instantiation, we may have
363 -- a generic contract violation. What we generate in this case is:
365 -- instantiation error at ...
366 -- original error message
370 -- warning: in instantiation at
371 -- warning: original warning message
373 -- All these messages are posted at the location of the top level
374 -- instantiation. If there are nested instantiations, then the
375 -- instantiation error message can be repeated, pointing to each
376 -- of the relevant instantiations.
378 -- Note: the instantiation mechanism is also shared for inlining of
379 -- subprogram bodies when front end inlining is done. In this case the
380 -- messages have the form:
382 -- in inlined body at ...
383 -- original error message
387 -- warning: in inlined body at
388 -- warning: original warning message
390 -- OK, here we have an instantiation error, and we need to generate the
391 -- error on the instantiation, rather than on the template.
394 Actual_Error_Loc
: Source_Ptr
;
395 -- Location of outer level instantiation in instantiation case, or
396 -- just a copy of Flag_Location in the normal case. This is the
397 -- location where all error messages will actually be posted.
399 Save_Error_Msg_Sloc
: constant Source_Ptr
:= Error_Msg_Sloc
;
400 -- Save possible location set for caller's message. We need to use
401 -- Error_Msg_Sloc for the location of the instantiation error but we
402 -- have to preserve a possible original value.
404 X
: Source_File_Index
;
406 Msg_Cont_Status
: Boolean;
407 -- Used to label continuation lines in instantiation case with
408 -- proper Msg_Cont status.
411 -- Loop to find highest level instantiation, where all error
412 -- messages will be placed.
416 Actual_Error_Loc
:= Instantiation
(X
);
417 X
:= Get_Source_File_Index
(Actual_Error_Loc
);
418 exit when Instantiation
(X
) = No_Location
;
421 -- Since we are generating the messages at the instantiation point in
422 -- any case, we do not want the references to the bad lines in the
423 -- instance to be annotated with the location of the instantiation.
425 Suppress_Instance_Location
:= True;
426 Msg_Cont_Status
:= False;
428 -- Loop to generate instantiation messages
430 Error_Msg_Sloc
:= Flag_Location
;
431 X
:= Get_Source_File_Index
(Flag_Location
);
432 while Instantiation
(X
) /= No_Location
loop
434 -- Suppress instantiation message on continuation lines
436 if Msg
(Msg
'First) /= '\' then
438 -- Case of inlined body
440 if Inlined_Body
(X
) then
441 if Is_Warning_Msg
or else Is_Style_Msg
then
443 ("?in inlined body #",
444 Actual_Error_Loc
, Flag_Location
, Msg_Cont_Status
);
447 ("error in inlined body #",
448 Actual_Error_Loc
, Flag_Location
, Msg_Cont_Status
);
451 -- Case of generic instantiation
454 if Is_Warning_Msg
or else Is_Style_Msg
then
456 ("?in instantiation #",
457 Actual_Error_Loc
, Flag_Location
, Msg_Cont_Status
);
460 ("instantiation error #",
461 Actual_Error_Loc
, Flag_Location
, Msg_Cont_Status
);
466 Error_Msg_Sloc
:= Instantiation
(X
);
467 X
:= Get_Source_File_Index
(Error_Msg_Sloc
);
468 Msg_Cont_Status
:= True;
471 Suppress_Instance_Location
:= False;
472 Error_Msg_Sloc
:= Save_Error_Msg_Sloc
;
474 -- Here we output the original message on the outer instantiation
477 (Msg
, Actual_Error_Loc
, Flag_Location
, Msg_Cont_Status
);
481 --------------------------------
482 -- Error_Msg_Ada_2012_Feature --
483 --------------------------------
485 procedure Error_Msg_Ada_2012_Feature
(Feature
: String; Loc
: Source_Ptr
) is
487 if Ada_Version
< Ada_2012
then
488 Error_Msg
(Feature
& " is an Ada 2012 feature", Loc
);
490 if No
(Ada_Version_Pragma
) then
491 Error_Msg
("\unit must be compiled with -gnat2012 switch", Loc
);
493 Error_Msg_Sloc
:= Sloc
(Ada_Version_Pragma
);
494 Error_Msg
("\incompatible with Ada version set#", Loc
);
497 end Error_Msg_Ada_2012_Feature
;
503 procedure Error_Msg_AP
(Msg
: String) is
508 -- If we had saved the Scan_Ptr value after scanning the previous
509 -- token, then we would have exactly the right place for putting
510 -- the flag immediately at hand. However, that would add at least
511 -- two instructions to a Scan call *just* to service the possibility
512 -- of an Error_Msg_AP call. So instead we reconstruct that value.
514 -- We have two possibilities, start with Prev_Token_Ptr and skip over
515 -- the current token, which is made harder by the possibility that this
516 -- token may be in error, or start with Token_Ptr and work backwards.
517 -- We used to take the second approach, but it's hard because of
518 -- comments, and harder still because things that look like comments
519 -- can appear inside strings. So now we take the first approach.
521 -- Note: in the case where there is no previous token, Prev_Token_Ptr
522 -- is set to Source_First, which is a reasonable position for the
523 -- error flag in this situation.
525 S1
:= Prev_Token_Ptr
;
528 -- If the previous token is a string literal, we need a special approach
529 -- since there may be white space inside the literal and we don't want
530 -- to stop on that white space.
532 -- Note: since this is an error recovery issue anyway, it is not worth
533 -- worrying about special UTF_32 line terminator characters here.
535 if Prev_Token
= Tok_String_Literal
then
539 if Source
(S1
) = C
then
541 exit when Source
(S1
) /= C
;
542 elsif Source
(S1
) in Line_Terminator
then
547 -- Character literal also needs special handling
549 elsif Prev_Token
= Tok_Char_Literal
then
552 -- Otherwise we search forward for the end of the current token, marked
553 -- by a line terminator, white space, a comment symbol or if we bump
554 -- into the following token (i.e. the current token).
556 -- Again, it is not worth worrying about UTF_32 special line terminator
557 -- characters in this context, since this is only for error recovery.
560 while Source
(S1
) not in Line_Terminator
561 and then Source
(S1
) /= ' '
562 and then Source
(S1
) /= ASCII
.HT
563 and then (Source
(S1
) /= '-' or else Source
(S1
+ 1) /= '-')
564 and then S1
/= Token_Ptr
570 -- S1 is now set to the location for the flag
579 procedure Error_Msg_BC
(Msg
: String) is
581 -- If we are at end of file, post the flag after the previous token
583 if Token
= Tok_EOF
then
586 -- If we are at start of file, post the flag at the current token
588 elsif Token_Ptr
= Source_First
(Current_Source_File
) then
591 -- If the character before the current token is a space or a horizontal
592 -- tab, then we place the flag on this character (in the case of a tab
593 -- we would really like to place it in the "last" character of the tab
594 -- space, but that it too much trouble to worry about).
596 elsif Source
(Token_Ptr
- 1) = ' '
597 or else Source
(Token_Ptr
- 1) = ASCII
.HT
599 Error_Msg
(Msg
, Token_Ptr
- 1);
601 -- If there is no space or tab before the current token, then there is
602 -- no room to place the flag before the token, so we place it on the
603 -- token instead (this happens for example at the start of a line).
606 Error_Msg
(Msg
, Token_Ptr
);
614 procedure Error_Msg_CRT
(Feature
: String; N
: Node_Id
) is
615 CNRT
: constant String := " not allowed in no run time mode";
616 CCRT
: constant String := " not supported by configuration>";
618 S
: String (1 .. Feature
'Length + 1 + CCRT
'Length);
623 S
(2 .. Feature
'Length + 1) := Feature
;
624 L
:= Feature
'Length + 2;
626 if No_Run_Time_Mode
then
627 S
(L
.. L
+ CNRT
'Length - 1) := CNRT
;
628 L
:= L
+ CNRT
'Length - 1;
630 else pragma Assert
(Configurable_Run_Time_Mode
);
631 S
(L
.. L
+ CCRT
'Length - 1) := CCRT
;
632 L
:= L
+ CCRT
'Length - 1;
635 Error_Msg_N
(S
(1 .. L
), N
);
636 Configurable_Run_Time_Violations
:= Configurable_Run_Time_Violations
+ 1;
643 procedure Error_Msg_PT
(Typ
: Node_Id
; Subp
: Node_Id
) is
646 ("first formal of & must be of mode `OUT`, `IN OUT` or " &
647 "access-to-variable", Typ
, Subp
);
649 ("\in order to be overridden by protected procedure or entry " &
650 "(RM 9.4(11.9/2))", Typ
);
657 procedure Error_Msg_F
(Msg
: String; N
: Node_Id
) is
659 Error_Msg_NEL
(Msg
, N
, N
, Sloc
(First_Node
(N
)));
666 procedure Error_Msg_FE
669 E
: Node_Or_Entity_Id
)
672 Error_Msg_NEL
(Msg
, N
, E
, Sloc
(First_Node
(N
)));
675 ------------------------
676 -- Error_Msg_Internal --
677 ------------------------
679 procedure Error_Msg_Internal
685 Next_Msg
: Error_Msg_Id
;
686 -- Pointer to next message at insertion point
688 Prev_Msg
: Error_Msg_Id
;
689 -- Pointer to previous message at insertion point
691 Temp_Msg
: Error_Msg_Id
;
694 -- Set if warning to be treated as error
696 procedure Handle_Serious_Error
;
697 -- Internal procedure to do all error message handling for a serious
698 -- error message, other than bumping the error counts and arranging
699 -- for the message to be output.
701 --------------------------
702 -- Handle_Serious_Error --
703 --------------------------
705 procedure Handle_Serious_Error
is
707 -- Turn off code generation if not done already
709 if Operating_Mode
= Generate_Code
then
710 Operating_Mode
:= Check_Semantics
;
711 Expander_Active
:= False;
714 -- Set the fatal error flag in the unit table unless we are in
715 -- Try_Semantics mode. This stops the semantics from being performed
716 -- if we find a serious error. This is skipped if we are currently
717 -- dealing with the configuration pragma file.
719 if not Try_Semantics
and then Current_Source_Unit
/= No_Unit
then
720 Set_Fatal_Error
(Get_Source_Unit
(Sptr
));
722 end Handle_Serious_Error
;
724 -- Start of processing for Error_Msg_Internal
727 if Raise_Exception_On_Error
/= 0 then
728 raise Error_Msg_Exception
;
731 Continuation
:= Msg_Cont
;
732 Continuation_New_Line
:= False;
733 Suppress_Message
:= False;
734 Kill_Message
:= False;
735 Warning_Msg_Char
:= ' ';
736 Set_Msg_Text
(Msg
, Sptr
);
738 -- Kill continuation if parent message killed
740 if Continuation
and Last_Killed
then
744 -- Return without doing anything if message is suppressed
747 and then not All_Errors_Mode
748 and then not Is_Warning_Msg
749 and then not Is_Unconditional_Msg
751 if not Continuation
then
758 -- Return without doing anything if message is killed and this is not
759 -- the first error message. The philosophy is that if we get a weird
760 -- error message and we already have had a message, then we hope the
761 -- weird message is a junk cascaded message
764 and then not All_Errors_Mode
765 and then Total_Errors_Detected
/= 0
767 if not Continuation
then
774 -- Special check for warning message to see if it should be output
776 if Is_Warning_Msg
then
778 -- Immediate return if warning message and warnings are suppressed
780 if Warnings_Suppressed
(Optr
) /= No_String
782 Warnings_Suppressed
(Sptr
) /= No_String
784 Cur_Msg
:= No_Error_Msg
;
788 -- If the flag location is in the main extended source unit then for
789 -- sure we want the warning since it definitely belongs
791 if In_Extended_Main_Source_Unit
(Sptr
) then
794 -- If the main unit has not been read yet. the warning must be on
795 -- a configuration file: gnat.adc or user-defined. This means we
796 -- are not parsing the main unit yet, so skip following checks.
798 elsif No
(Cunit
(Main_Unit
)) then
801 -- If the flag location is not in the main extended source unit, then
802 -- we want to eliminate the warning, unless it is in the extended
803 -- main code unit and we want warnings on the instance.
805 elsif In_Extended_Main_Code_Unit
(Sptr
) and then Warn_On_Instance
then
808 -- Keep warning if debug flag G set
810 elsif Debug_Flag_GG
then
813 -- Keep warning if message text contains !!
815 elsif Has_Double_Exclam
then
818 -- Here is where we delete a warning from a with'ed unit
821 Cur_Msg
:= No_Error_Msg
;
823 if not Continuation
then
831 -- If message is to be ignored in special ignore message mode, this is
832 -- where we do this special processing, bypassing message output.
834 if Ignore_Errors_Enable
> 0 then
835 if Is_Serious_Error
then
836 Handle_Serious_Error
;
842 -- If error message line length set, and this is a continuation message
843 -- then all we do is to append the text to the text of the last message
844 -- with a comma space separator (eliminating a possible (style) or
847 if Error_Msg_Line_Length
/= 0 and then Continuation
then
848 Cur_Msg
:= Errors
.Last
;
851 Oldm
: String_Ptr
:= Errors
.Table
(Cur_Msg
).Text
;
852 Newm
: String (1 .. Oldm
'Last + 2 + Msglen
);
857 -- First copy old message to new one and free it
859 Newm
(Oldm
'Range) := Oldm
.all;
863 -- Remove (style) or info: at start of message
865 if Msglen
> 8 and then Msg_Buffer
(1 .. 8) = "(style) " then
868 elsif Msglen
> 6 and then Msg_Buffer
(1 .. 6) = "info: " then
875 -- Now deal with separation between messages. Normally this is
876 -- simply comma space, but there are some special cases.
878 -- If continuation new line, then put actual NL character in msg
880 if Continuation_New_Line
then
882 Newm
(Newl
) := ASCII
.LF
;
884 -- If continuation message is enclosed in parentheses, then
885 -- special treatment (don't need a comma, and we want to combine
886 -- successive parenthetical remarks into a single one with
887 -- separating commas).
889 elsif Msg_Buffer
(M
) = '(' and then Msg_Buffer
(Msglen
) = ')' then
891 -- Case where existing message ends in right paren, remove
892 -- and separate parenthetical remarks with a comma.
894 if Newm
(Newl
) = ')' then
896 Msg_Buffer
(M
) := ' ';
898 -- Case where we are adding new parenthetical comment
905 -- Case where continuation not in parens and no new line
908 Newm
(Newl
+ 1 .. Newl
+ 2) := ", ";
912 -- Append new message
914 Newm
(Newl
+ 1 .. Newl
+ Msglen
- M
+ 1) :=
915 Msg_Buffer
(M
.. Msglen
);
916 Newl
:= Newl
+ Msglen
- M
+ 1;
917 Errors
.Table
(Cur_Msg
).Text
:= new String'(Newm (1 .. Newl));
919 -- Update warning msg flag and message doc char if needed
921 if Is_Warning_Msg then
922 if not Errors.Table (Cur_Msg).Warn then
923 Errors.Table (Cur_Msg).Warn := True;
924 Errors.Table (Cur_Msg).Warn_Chr := Warning_Msg_Char;
926 elsif Warning_Msg_Char /= ' ' then
927 Errors.Table (Cur_Msg).Warn_Chr := Warning_Msg_Char;
935 -- Here we build a new error object
938 ((Text => new String'(Msg_Buffer
(1 .. Msglen
)),
939 Next
=> No_Error_Msg
,
940 Prev
=> No_Error_Msg
,
943 Sfile
=> Get_Source_File_Index
(Sptr
),
944 Line
=> Get_Physical_Line_Number
(Sptr
),
945 Col
=> Get_Column_Number
(Sptr
),
946 Warn
=> Is_Warning_Msg
,
947 Warn_Err
=> False, -- reset below
948 Warn_Chr
=> Warning_Msg_Char
,
949 Style
=> Is_Style_Msg
,
950 Serious
=> Is_Serious_Error
,
951 Uncond
=> Is_Unconditional_Msg
,
952 Msg_Cont
=> Continuation
,
954 Cur_Msg
:= Errors
.Last
;
956 -- Test if warning to be treated as error
960 and then (Warning_Treated_As_Error
(Msg_Buffer
(1 .. Msglen
))
962 Warning_Treated_As_Error
(Get_Warning_Tag
(Cur_Msg
)));
964 -- Propagate Warn_Err to this message and preceding continuations
966 for J
in reverse 1 .. Errors
.Last
loop
967 Errors
.Table
(J
).Warn_Err
:= Warn_Err
;
968 exit when not Errors
.Table
(J
).Msg_Cont
;
971 -- If immediate errors mode set, output error message now. Also output
972 -- now if the -d1 debug flag is set (so node number message comes out
973 -- just before actual error message)
975 if Debug_Flag_OO
or else Debug_Flag_1
then
978 (Errors
.Table
(Cur_Msg
).Line
, Errors
.Table
(Cur_Msg
).Sfile
, True);
980 Output_Error_Msgs
(Temp_Msg
);
982 -- If not in immediate errors mode, then we insert the message in the
983 -- error chain for later output by Finalize. The messages are sorted
984 -- first by unit (main unit comes first), and within a unit by source
985 -- location (earlier flag location first in the chain).
988 -- First a quick check, does this belong at the very end of the chain
989 -- of error messages. This saves a lot of time in the normal case if
990 -- there are lots of messages.
992 if Last_Error_Msg
/= No_Error_Msg
993 and then Errors
.Table
(Cur_Msg
).Sfile
=
994 Errors
.Table
(Last_Error_Msg
).Sfile
995 and then (Sptr
> Errors
.Table
(Last_Error_Msg
).Sptr
997 (Sptr
= Errors
.Table
(Last_Error_Msg
).Sptr
999 Optr
> Errors
.Table
(Last_Error_Msg
).Optr
))
1001 Prev_Msg
:= Last_Error_Msg
;
1002 Next_Msg
:= No_Error_Msg
;
1004 -- Otherwise do a full sequential search for the insertion point
1007 Prev_Msg
:= No_Error_Msg
;
1008 Next_Msg
:= First_Error_Msg
;
1009 while Next_Msg
/= No_Error_Msg
loop
1011 Errors
.Table
(Cur_Msg
).Sfile
< Errors
.Table
(Next_Msg
).Sfile
;
1013 if Errors
.Table
(Cur_Msg
).Sfile
=
1014 Errors
.Table
(Next_Msg
).Sfile
1016 exit when Sptr
< Errors
.Table
(Next_Msg
).Sptr
1018 (Sptr
= Errors
.Table
(Next_Msg
).Sptr
1020 Optr
< Errors
.Table
(Next_Msg
).Optr
);
1023 Prev_Msg
:= Next_Msg
;
1024 Next_Msg
:= Errors
.Table
(Next_Msg
).Next
;
1028 -- Now we insert the new message in the error chain. The insertion
1029 -- point for the message is after Prev_Msg and before Next_Msg.
1031 -- The possible insertion point for the new message is after Prev_Msg
1032 -- and before Next_Msg. However, this is where we do a special check
1033 -- for redundant parsing messages, defined as messages posted on the
1034 -- same line. The idea here is that probably such messages are junk
1035 -- from the parser recovering. In full errors mode, we don't do this
1036 -- deletion, but otherwise such messages are discarded at this stage.
1038 if Prev_Msg
/= No_Error_Msg
1039 and then Errors
.Table
(Prev_Msg
).Line
=
1040 Errors
.Table
(Cur_Msg
).Line
1041 and then Errors
.Table
(Prev_Msg
).Sfile
=
1042 Errors
.Table
(Cur_Msg
).Sfile
1043 and then Compiler_State
= Parsing
1044 and then not All_Errors_Mode
1046 -- Don't delete unconditional messages and at this stage, don't
1047 -- delete continuation lines (we attempted to delete those earlier
1048 -- if the parent message was deleted.
1050 if not Errors
.Table
(Cur_Msg
).Uncond
1051 and then not Continuation
1053 -- Don't delete if prev msg is warning and new msg is an error.
1054 -- This is because we don't want a real error masked by a
1055 -- warning. In all other cases (that is parse errors for the
1056 -- same line that are not unconditional) we do delete the
1057 -- message. This helps to avoid junk extra messages from
1058 -- cascaded parsing errors
1060 if not (Errors
.Table
(Prev_Msg
).Warn
1062 Errors
.Table
(Prev_Msg
).Style
)
1064 (Errors
.Table
(Cur_Msg
).Warn
1066 Errors
.Table
(Cur_Msg
).Style
)
1068 -- All tests passed, delete the message by simply returning
1069 -- without any further processing.
1071 if not Continuation
then
1072 Last_Killed
:= True;
1080 -- Come here if message is to be inserted in the error chain
1082 if not Continuation
then
1083 Last_Killed
:= False;
1086 if Prev_Msg
= No_Error_Msg
then
1087 First_Error_Msg
:= Cur_Msg
;
1089 Errors
.Table
(Prev_Msg
).Next
:= Cur_Msg
;
1092 Errors
.Table
(Cur_Msg
).Next
:= Next_Msg
;
1094 if Next_Msg
= No_Error_Msg
then
1095 Last_Error_Msg
:= Cur_Msg
;
1099 -- Bump appropriate statistics count
1101 if Errors
.Table
(Cur_Msg
).Warn
or else Errors
.Table
(Cur_Msg
).Style
then
1102 Warnings_Detected
:= Warnings_Detected
+ 1;
1105 Total_Errors_Detected
:= Total_Errors_Detected
+ 1;
1107 if Errors
.Table
(Cur_Msg
).Serious
then
1108 Serious_Errors_Detected
:= Serious_Errors_Detected
+ 1;
1109 Handle_Serious_Error
;
1113 -- If too many warnings turn off warnings
1115 if Maximum_Messages
/= 0 then
1116 if Warnings_Detected
= Maximum_Messages
then
1117 Warning_Mode
:= Suppress
;
1120 -- If too many errors abandon compilation
1122 if Total_Errors_Detected
= Maximum_Messages
then
1123 raise Unrecoverable_Error
;
1126 end Error_Msg_Internal
;
1132 procedure Error_Msg_N
(Msg
: String; N
: Node_Or_Entity_Id
) is
1134 Error_Msg_NEL
(Msg
, N
, N
, Sloc
(N
));
1141 procedure Error_Msg_NE
1143 N
: Node_Or_Entity_Id
;
1144 E
: Node_Or_Entity_Id
)
1147 Error_Msg_NEL
(Msg
, N
, E
, Sloc
(N
));
1154 procedure Error_Msg_NEL
1156 N
: Node_Or_Entity_Id
;
1157 E
: Node_Or_Entity_Id
;
1158 Flag_Location
: Source_Ptr
)
1161 if Special_Msg_Delete
(Msg
, N
, E
) then
1165 Test_Style_Warning_Serious_Unconditional_Msg
(Msg
);
1167 -- Special handling for warning messages
1169 if Is_Warning_Msg
then
1171 -- Suppress if no warnings set for either entity or node
1173 if No_Warnings
(N
) or else No_Warnings
(E
) then
1175 -- Disable any continuation messages as well
1177 Last_Killed
:= True;
1181 -- Suppress if inside loop that is known to be null or is probably
1182 -- null (case where loop executes only if invalid values present).
1183 -- In either case warnings in the loop are likely to be junk.
1190 while Present
(P
) loop
1191 if Nkind
(P
) = N_Loop_Statement
1192 and then Suppress_Loop_Warnings
(P
)
1202 -- Test for message to be output
1205 or else Is_Unconditional_Msg
1206 or else Is_Warning_Msg
1208 or else (Msg
(Msg
'First) = '\' and then not Last_Killed
)
1211 Error_Msg_Node_1
:= E
;
1212 Error_Msg
(Msg
, Flag_Location
);
1215 Last_Killed
:= True;
1218 if not (Is_Warning_Msg
or Is_Style_Msg
) then
1227 procedure Error_Msg_NW
1230 N
: Node_Or_Entity_Id
)
1234 and then In_Extended_Main_Source_Unit
(N
)
1235 and then Comes_From_Source
(N
)
1237 Error_Msg_NEL
(Msg
, N
, N
, Sloc
(N
));
1245 procedure Error_Msg_S
(Msg
: String) is
1247 Error_Msg
(Msg
, Scan_Ptr
);
1254 procedure Error_Msg_SC
(Msg
: String) is
1256 -- If we are at end of file, post the flag after the previous token
1258 if Token
= Tok_EOF
then
1261 -- For all other cases the message is posted at the current token
1265 Error_Msg
(Msg
, Token_Ptr
);
1273 procedure Error_Msg_SP
(Msg
: String) is
1275 -- Note: in the case where there is no previous token, Prev_Token_Ptr
1276 -- is set to Source_First, which is a reasonable position for the
1277 -- error flag in this situation
1279 Error_Msg
(Msg
, Prev_Token_Ptr
);
1286 procedure Finalize
(Last_Call
: Boolean) is
1291 procedure Delete_Warning
(E
: Error_Msg_Id
);
1292 -- Delete a message if not already deleted and adjust warning count
1294 --------------------
1295 -- Delete_Warning --
1296 --------------------
1298 procedure Delete_Warning
(E
: Error_Msg_Id
) is
1300 if not Errors
.Table
(E
).Deleted
then
1301 Errors
.Table
(E
).Deleted
:= True;
1302 Warnings_Detected
:= Warnings_Detected
- 1;
1306 -- Start of message for Finalize
1309 -- Set Prev pointers
1311 Cur
:= First_Error_Msg
;
1312 while Cur
/= No_Error_Msg
loop
1313 Nxt
:= Errors
.Table
(Cur
).Next
;
1314 exit when Nxt
= No_Error_Msg
;
1315 Errors
.Table
(Nxt
).Prev
:= Cur
;
1319 -- Eliminate any duplicated error messages from the list. This is
1320 -- done after the fact to avoid problems with Change_Error_Text.
1322 Cur
:= First_Error_Msg
;
1323 while Cur
/= No_Error_Msg
loop
1324 Nxt
:= Errors
.Table
(Cur
).Next
;
1327 while F
/= No_Error_Msg
1328 and then Errors
.Table
(F
).Sptr
= Errors
.Table
(Cur
).Sptr
1330 Check_Duplicate_Message
(Cur
, F
);
1331 F
:= Errors
.Table
(F
).Next
;
1337 -- Mark any messages suppressed by specific warnings as Deleted
1339 Cur
:= First_Error_Msg
;
1340 while Cur
/= No_Error_Msg
loop
1342 CE
: Error_Msg_Object
renames Errors
.Table
(Cur
);
1345 if (CE
.Warn
and not CE
.Deleted
)
1346 and then (Warning_Specifically_Suppressed
(CE
.Sptr
, CE
.Text
) /=
1349 Warning_Specifically_Suppressed
(CE
.Optr
, CE
.Text
) /=
1352 Delete_Warning
(Cur
);
1354 -- If this is a continuation, delete previous messages
1357 while Errors
.Table
(F
).Msg_Cont
loop
1358 F
:= Errors
.Table
(F
).Prev
;
1362 -- Delete any following continuations
1366 F
:= Errors
.Table
(F
).Next
;
1367 exit when F
= No_Error_Msg
;
1368 exit when not Errors
.Table
(F
).Msg_Cont
;
1374 Cur
:= Errors
.Table
(Cur
).Next
;
1377 Finalize_Called
:= True;
1379 -- Check consistency of specific warnings (may add warnings). We only
1380 -- do this on the last call, after all possible warnings are posted.
1383 Validate_Specific_Warnings
(Error_Msg
'Access);
1391 function First_Node
(C
: Node_Id
) return Node_Id
is
1392 Orig
: constant Node_Id
:= Original_Node
(C
);
1393 Loc
: constant Source_Ptr
:= Sloc
(Orig
);
1394 Sfile
: constant Source_File_Index
:= Get_Source_File_Index
(Loc
);
1398 function Test_Earlier
(N
: Node_Id
) return Traverse_Result
;
1399 -- Function applied to every node in the construct
1401 procedure Search_Tree_First
is new Traverse_Proc
(Test_Earlier
);
1402 -- Create traversal procedure
1408 function Test_Earlier
(N
: Node_Id
) return Traverse_Result
is
1409 Norig
: constant Node_Id
:= Original_Node
(N
);
1410 Loc
: constant Source_Ptr
:= Sloc
(Norig
);
1413 -- Check for earlier
1417 -- Ignore nodes with no useful location information
1419 and then Loc
/= Standard_Location
1420 and then Loc
/= No_Location
1422 -- Ignore nodes from a different file. This ensures against cases
1423 -- of strange foreign code somehow being present. We don't want
1424 -- wild placement of messages if that happens.
1426 and then Get_Source_File_Index
(Loc
) = Sfile
1435 -- Start of processing for First_Node
1438 if Nkind
(Orig
) in N_Subexpr
then
1441 Search_Tree_First
(Orig
);
1453 function First_Sloc
(N
: Node_Id
) return Source_Ptr
is
1454 SI
: constant Source_File_Index
:= Source_Index
(Get_Source_Unit
(N
));
1455 SF
: constant Source_Ptr
:= Source_First
(SI
);
1460 F
:= First_Node
(N
);
1463 -- The following circuit is a bit subtle. When we have parenthesized
1464 -- expressions, then the Sloc will not record the location of the paren,
1465 -- but we would like to post the flag on the paren. So what we do is to
1466 -- crawl up the tree from the First_Node, adjusting the Sloc value for
1467 -- any parentheses we know are present. Yes, we know this circuit is not
1468 -- 100% reliable (e.g. because we don't record all possible paren level
1469 -- values), but this is only for an error message so it is good enough.
1472 Paren_Loop
: for J
in 1 .. Paren_Count
(F
) loop
1474 -- We don't look more than 12 characters behind the current
1475 -- location, and in any case not past the front of the source.
1477 Search_Loop
: for K
in 1 .. 12 loop
1478 exit Search_Loop
when S
= SF
;
1480 if Source_Text
(SI
) (S
- 1) = '(' then
1484 elsif Source_Text
(SI
) (S
- 1) <= ' ' then
1490 end loop Search_Loop
;
1491 end loop Paren_Loop
;
1493 exit Node_Loop
when F
= N
;
1495 exit Node_Loop
when Nkind
(F
) not in N_Subexpr
;
1501 -----------------------
1502 -- Get_Ignore_Errors --
1503 -----------------------
1505 function Get_Ignore_Errors
return Boolean is
1507 return Errors_Must_Be_Ignored
;
1508 end Get_Ignore_Errors
;
1514 procedure Initialize
is
1517 First_Error_Msg
:= No_Error_Msg
;
1518 Last_Error_Msg
:= No_Error_Msg
;
1519 Serious_Errors_Detected
:= 0;
1520 Total_Errors_Detected
:= 0;
1521 Warnings_Treated_As_Errors
:= 0;
1522 Warnings_Detected
:= 0;
1523 Warnings_As_Errors_Count
:= 0;
1524 Cur_Msg
:= No_Error_Msg
;
1527 -- Initialize warnings tables
1530 Specific_Warnings
.Init
;
1537 function No_Warnings
(N
: Node_Or_Entity_Id
) return Boolean is
1539 if Error_Posted
(N
) then
1542 elsif Nkind
(N
) in N_Entity
and then Has_Warnings_Off
(N
) then
1545 elsif Is_Entity_Name
(N
)
1546 and then Present
(Entity
(N
))
1547 and then Has_Warnings_Off
(Entity
(N
))
1560 function OK_Node
(N
: Node_Id
) return Boolean is
1561 K
: constant Node_Kind
:= Nkind
(N
);
1564 if Error_Posted
(N
) then
1567 elsif K
in N_Has_Etype
1568 and then Present
(Etype
(N
))
1569 and then Error_Posted
(Etype
(N
))
1574 or else K
= N_Attribute_Reference
1575 or else K
= N_Character_Literal
1576 or else K
= N_Expanded_Name
1577 or else K
= N_Identifier
1578 or else K
= N_Operator_Symbol
)
1579 and then Present
(Entity
(N
))
1580 and then Error_Posted
(Entity
(N
))
1588 ---------------------
1589 -- Output_Messages --
1590 ---------------------
1592 procedure Output_Messages
is
1596 procedure Write_Error_Summary
;
1597 -- Write error summary
1599 procedure Write_Header
(Sfile
: Source_File_Index
);
1600 -- Write header line (compiling or checking given file)
1602 procedure Write_Max_Errors
;
1603 -- Write message if max errors reached
1605 -------------------------
1606 -- Write_Error_Summary --
1607 -------------------------
1609 procedure Write_Error_Summary
is
1611 -- Extra blank line if error messages or source listing were output
1613 if Total_Errors_Detected
+ Warnings_Detected
> 0
1619 -- Message giving number of lines read and number of errors detected.
1620 -- This normally goes to Standard_Output. The exception is when brief
1621 -- mode is not set, verbose mode (or full list mode) is set, and
1622 -- there are errors. In this case we send the message to standard
1623 -- error to make sure that *something* appears on standard error in
1624 -- an error situation.
1626 -- Formerly, only the "# errors" suffix was sent to stderr, whereas
1627 -- "# lines:" appeared on stdout. This caused problems on VMS when
1628 -- the stdout buffer was flushed, giving an extra line feed after
1631 if Total_Errors_Detected
+ Warnings_Detected
/= 0
1632 and then not Brief_Output
1633 and then (Verbose_Mode
or Full_List
)
1638 -- Message giving total number of lines. Don't give this message if
1639 -- the Main_Source line is unknown (this happens in error situations,
1640 -- e.g. when integrated preprocessing fails).
1642 if Main_Source_File
/= No_Source_File
then
1644 Write_Int
(Num_Source_Lines
(Main_Source_File
));
1646 if Num_Source_Lines
(Main_Source_File
) = 1 then
1647 Write_Str
(" line: ");
1649 Write_Str
(" lines: ");
1653 if Total_Errors_Detected
= 0 then
1654 Write_Str
("No errors");
1656 elsif Total_Errors_Detected
= 1 then
1657 Write_Str
("1 error");
1660 Write_Int
(Total_Errors_Detected
);
1661 Write_Str
(" errors");
1664 if Warnings_Detected
/= 0 then
1666 Write_Int
(Warnings_Detected
);
1667 Write_Str
(" warning");
1669 if Warnings_Detected
/= 1 then
1673 if Warning_Mode
= Treat_As_Error
then
1674 Write_Str
(" (treated as error");
1676 if Warnings_Detected
/= 1 then
1682 elsif Warnings_Treated_As_Errors
/= 0 then
1684 Write_Int
(Warnings_Treated_As_Errors
);
1685 Write_Str
(" treated as errors)");
1690 Set_Standard_Output
;
1691 end Write_Error_Summary
;
1697 procedure Write_Header
(Sfile
: Source_File_Index
) is
1699 if Verbose_Mode
or Full_List
then
1700 if Original_Operating_Mode
= Generate_Code
then
1701 Write_Str
("Compiling: ");
1703 Write_Str
("Checking: ");
1706 Write_Name
(Full_File_Name
(Sfile
));
1708 if not Debug_Flag_7
then
1709 Write_Str
(" (source file time stamp: ");
1710 Write_Time_Stamp
(Sfile
);
1718 ----------------------
1719 -- Write_Max_Errors --
1720 ----------------------
1722 procedure Write_Max_Errors
is
1724 if Maximum_Messages
/= 0 then
1725 if Warnings_Detected
>= Maximum_Messages
then
1727 Write_Line
("maximum number of warnings output");
1728 Write_Line
("any further warnings suppressed");
1729 Set_Standard_Output
;
1732 -- If too many errors print message
1734 if Total_Errors_Detected
>= Maximum_Messages
then
1736 Write_Line
("fatal error: maximum number of errors detected");
1737 Set_Standard_Output
;
1740 end Write_Max_Errors
;
1742 -- Start of processing for Output_Messages
1745 -- Error if Finalize has not been called
1747 if not Finalize_Called
then
1748 raise Program_Error
;
1751 -- Reset current error source file if the main unit has a pragma
1752 -- Source_Reference. This ensures outputting the proper name of
1753 -- the source file in this situation.
1755 if Main_Source_File
= No_Source_File
1756 or else Num_SRef_Pragmas
(Main_Source_File
) /= 0
1758 Current_Error_Source_File
:= No_Source_File
;
1763 if Brief_Output
or (not Full_List
and not Verbose_Mode
) then
1766 E
:= First_Error_Msg
;
1767 while E
/= No_Error_Msg
loop
1768 if not Errors
.Table
(E
).Deleted
and then not Debug_Flag_KK
then
1769 if Full_Path_Name_For_Brief_Errors
then
1770 Write_Name
(Full_Ref_Name
(Errors
.Table
(E
).Sfile
));
1772 Write_Name
(Reference_Name
(Errors
.Table
(E
).Sfile
));
1776 Write_Int
(Int
(Physical_To_Logical
1777 (Errors
.Table
(E
).Line
,
1778 Errors
.Table
(E
).Sfile
)));
1781 if Errors
.Table
(E
).Col
< 10 then
1785 Write_Int
(Int
(Errors
.Table
(E
).Col
));
1787 Output_Msg_Text
(E
);
1791 E
:= Errors
.Table
(E
).Next
;
1794 Set_Standard_Output
;
1797 -- Full source listing case
1800 List_Pragmas_Index
:= 1;
1801 List_Pragmas_Mode
:= True;
1802 E
:= First_Error_Msg
;
1804 -- Normal case, to stdout (copyright notice already output)
1806 if Full_List_File_Name
= null then
1807 if not Debug_Flag_7
then
1814 Create_List_File_Access
.all (Full_List_File_Name
.all);
1815 Set_Special_Output
(Write_List_Info_Access
.all'Access);
1817 -- Write copyright notice to file
1819 if not Debug_Flag_7
then
1820 Write_Str
("GNAT ");
1821 Write_Str
(Gnat_Version_String
);
1823 Write_Str
("Copyright 1992-" &
1825 ", Free Software Foundation, Inc.");
1830 -- First list extended main source file units with errors
1832 for U
in Main_Unit
.. Last_Unit
loop
1833 if In_Extended_Main_Source_Unit
(Cunit_Entity
(U
))
1835 -- If debug flag d.m is set, only the main source is listed
1837 and then (U
= Main_Unit
or else not Debug_Flag_Dot_M
)
1839 -- If the unit of the entity does not come from source, it is
1840 -- an implicit subprogram declaration for a child subprogram.
1841 -- Do not emit errors for it, they are listed with the body.
1844 (No
(Cunit_Entity
(U
))
1845 or else Comes_From_Source
(Cunit_Entity
(U
))
1846 or else not Is_Subprogram
(Cunit_Entity
(U
)))
1849 Sfile
: constant Source_File_Index
:= Source_Index
(U
);
1854 -- Only write the header if Sfile is known
1856 if Sfile
/= No_Source_File
then
1857 Write_Header
(Sfile
);
1861 -- Normally, we don't want an "error messages from file"
1862 -- message when listing the entire file, so we set the
1863 -- current source file as the current error source file.
1864 -- However, the old style of doing things was to list this
1865 -- message if pragma Source_Reference is present, even for
1866 -- the main unit. Since the purpose of the -gnatd.m switch
1867 -- is to duplicate the old behavior, we skip the reset if
1868 -- this debug flag is set.
1870 if not Debug_Flag_Dot_M
then
1871 Current_Error_Source_File
:= Sfile
;
1874 -- Only output the listing if Sfile is known, to avoid
1875 -- crashing the compiler.
1877 if Sfile
/= No_Source_File
then
1878 for N
in 1 .. Last_Source_Line
(Sfile
) loop
1879 while E
/= No_Error_Msg
1880 and then Errors
.Table
(E
).Deleted
1882 E
:= Errors
.Table
(E
).Next
;
1887 and then Errors
.Table
(E
).Line
= N
1888 and then Errors
.Table
(E
).Sfile
= Sfile
;
1890 Output_Source_Line
(N
, Sfile
, Err_Flag
);
1893 Output_Error_Msgs
(E
);
1895 if not Debug_Flag_2
then
1905 -- Then output errors, if any, for subsidiary units not in the
1906 -- main extended unit.
1908 -- Note: if debug flag d.m set, include errors for any units other
1909 -- than the main unit in the extended source unit (e.g. spec and
1910 -- subunits for a body).
1912 while E
/= No_Error_Msg
1913 and then (not In_Extended_Main_Source_Unit
(Errors
.Table
(E
).Sptr
)
1916 and then Get_Source_Unit
1917 (Errors
.Table
(E
).Sptr
) /= Main_Unit
))
1919 if Errors
.Table
(E
).Deleted
then
1920 E
:= Errors
.Table
(E
).Next
;
1925 (Errors
.Table
(E
).Line
, Errors
.Table
(E
).Sfile
, True);
1926 Output_Error_Msgs
(E
);
1930 -- If output to file, write extra copy of error summary to the
1931 -- output file, and then close it.
1933 if Full_List_File_Name
/= null then
1934 Write_Error_Summary
;
1936 Close_List_File_Access
.all;
1937 Cancel_Special_Output
;
1941 -- Verbose mode (error lines only with error flags). Normally this is
1942 -- ignored in full list mode, unless we are listing to a file, in which
1943 -- case we still generate -gnatv output to standard output.
1946 and then (not Full_List
or else Full_List_File_Name
/= null)
1950 -- Output the header only when Main_Source_File is known
1952 if Main_Source_File
/= No_Source_File
then
1953 Write_Header
(Main_Source_File
);
1956 E
:= First_Error_Msg
;
1958 -- Loop through error lines
1960 while E
/= No_Error_Msg
loop
1961 if Errors
.Table
(E
).Deleted
then
1962 E
:= Errors
.Table
(E
).Next
;
1966 (Errors
.Table
(E
).Line
, Errors
.Table
(E
).Sfile
, True);
1967 Output_Error_Msgs
(E
);
1972 -- Output error summary if verbose or full list mode
1974 if Verbose_Mode
or else Full_List
then
1975 Write_Error_Summary
;
1980 if Warning_Mode
= Treat_As_Error
then
1981 Total_Errors_Detected
:= Total_Errors_Detected
+ Warnings_Detected
;
1982 Warnings_Detected
:= 0;
1984 end Output_Messages
;
1986 ------------------------
1987 -- Output_Source_Line --
1988 ------------------------
1990 procedure Output_Source_Line
1991 (L
: Physical_Line_Number
;
1992 Sfile
: Source_File_Index
;
1998 Line_Number_Output
: Boolean := False;
1999 -- Set True once line number is output
2001 Empty_Line
: Boolean := True;
2002 -- Set False if line includes at least one character
2005 if Sfile
/= Current_Error_Source_File
then
2006 Write_Str
("==============Error messages for ");
2008 case Sinput
.File_Type
(Sfile
) is
2010 Write_Str
("source");
2012 when Sinput
.Config
=>
2013 Write_Str
("configuration pragmas");
2016 Write_Str
("symbol definition");
2018 when Sinput
.Preproc
=>
2019 Write_Str
("preprocessing data");
2022 Write_Str
(" file: ");
2023 Write_Name
(Full_File_Name
(Sfile
));
2026 if Num_SRef_Pragmas
(Sfile
) > 0 then
2027 Write_Str
("--------------Line numbers from file: ");
2028 Write_Name
(Full_Ref_Name
(Sfile
));
2029 Write_Str
(" (starting at line ");
2030 Write_Int
(Int
(First_Mapped_Line
(Sfile
)));
2035 Current_Error_Source_File
:= Sfile
;
2038 if Errs
or List_Pragmas_Mode
then
2039 Output_Line_Number
(Physical_To_Logical
(L
, Sfile
));
2040 Line_Number_Output
:= True;
2043 S
:= Line_Start
(L
, Sfile
);
2046 C
:= Source_Text
(Sfile
) (S
);
2047 exit when C
= ASCII
.LF
or else C
= ASCII
.CR
or else C
= EOF
;
2049 -- Deal with matching entry in List_Pragmas table
2052 and then List_Pragmas_Index
<= List_Pragmas
.Last
2053 and then S
= List_Pragmas
.Table
(List_Pragmas_Index
).Ploc
2055 case List_Pragmas
.Table
(List_Pragmas_Index
).Ptyp
is
2059 -- Ignore if on line with errors so that error flags
2060 -- get properly listed with the error line .
2063 Write_Char
(ASCII
.FF
);
2067 List_Pragmas_Mode
:= True;
2069 if not Line_Number_Output
then
2070 Output_Line_Number
(Physical_To_Logical
(L
, Sfile
));
2071 Line_Number_Output
:= True;
2078 List_Pragmas_Mode
:= False;
2081 List_Pragmas_Index
:= List_Pragmas_Index
+ 1;
2083 -- Normal case (no matching entry in List_Pragmas table)
2086 if Errs
or List_Pragmas_Mode
then
2091 Empty_Line
:= False;
2095 -- If we have output a source line, then add the line terminator, with
2096 -- training spaces preserved (so we output the line exactly as input).
2098 if Line_Number_Output
then
2102 Write_Eol_Keep_Blanks
;
2105 end Output_Source_Line
;
2107 -----------------------------
2108 -- Remove_Warning_Messages --
2109 -----------------------------
2111 procedure Remove_Warning_Messages
(N
: Node_Id
) is
2113 function Check_For_Warning
(N
: Node_Id
) return Traverse_Result
;
2114 -- This function checks one node for a possible warning message
2116 function Check_All_Warnings
is new Traverse_Func
(Check_For_Warning
);
2117 -- This defines the traversal operation
2119 -----------------------
2120 -- Check_For_Warning --
2121 -----------------------
2123 function Check_For_Warning
(N
: Node_Id
) return Traverse_Result
is
2124 Loc
: constant Source_Ptr
:= Sloc
(N
);
2127 function To_Be_Removed
(E
: Error_Msg_Id
) return Boolean;
2128 -- Returns True for a message that is to be removed. Also adjusts
2129 -- warning count appropriately.
2135 function To_Be_Removed
(E
: Error_Msg_Id
) return Boolean is
2137 if E
/= No_Error_Msg
2139 -- Don't remove if location does not match
2141 and then Errors
.Table
(E
).Optr
= Loc
2143 -- Don't remove if not warning/info message. Note that we do
2144 -- not remove style messages here. They are warning messages
2145 -- but not ones we want removed in this context.
2147 and then Errors
.Table
(E
).Warn
2149 -- Don't remove unconditional messages
2151 and then not Errors
.Table
(E
).Uncond
2153 Warnings_Detected
:= Warnings_Detected
- 1;
2156 -- No removal required
2163 -- Start of processing for Check_For_Warnings
2166 while To_Be_Removed
(First_Error_Msg
) loop
2167 First_Error_Msg
:= Errors
.Table
(First_Error_Msg
).Next
;
2170 if First_Error_Msg
= No_Error_Msg
then
2171 Last_Error_Msg
:= No_Error_Msg
;
2174 E
:= First_Error_Msg
;
2175 while E
/= No_Error_Msg
loop
2176 while To_Be_Removed
(Errors
.Table
(E
).Next
) loop
2177 Errors
.Table
(E
).Next
:=
2178 Errors
.Table
(Errors
.Table
(E
).Next
).Next
;
2180 if Errors
.Table
(E
).Next
= No_Error_Msg
then
2181 Last_Error_Msg
:= E
;
2185 E
:= Errors
.Table
(E
).Next
;
2188 if Nkind
(N
) = N_Raise_Constraint_Error
2189 and then Original_Node
(N
) /= N
2190 and then No
(Condition
(N
))
2192 -- Warnings may have been posted on subexpressions of the original
2193 -- tree. We place the original node back on the tree to remove
2194 -- those warnings, whose sloc do not match those of any node in
2195 -- the current tree. Given that we are in unreachable code, this
2196 -- modification to the tree is harmless.
2199 Status
: Traverse_Final_Result
;
2202 if Is_List_Member
(N
) then
2203 Set_Condition
(N
, Original_Node
(N
));
2204 Status
:= Check_All_Warnings
(Condition
(N
));
2206 Rewrite
(N
, Original_Node
(N
));
2207 Status
:= Check_All_Warnings
(N
);
2216 end Check_For_Warning
;
2218 -- Start of processing for Remove_Warning_Messages
2221 if Warnings_Detected
/= 0 then
2223 Discard
: Traverse_Final_Result
;
2224 pragma Warnings
(Off
, Discard
);
2227 Discard
:= Check_All_Warnings
(N
);
2230 end Remove_Warning_Messages
;
2232 procedure Remove_Warning_Messages
(L
: List_Id
) is
2235 if Is_Non_Empty_List
(L
) then
2237 while Present
(Stat
) loop
2238 Remove_Warning_Messages
(Stat
);
2242 end Remove_Warning_Messages
;
2244 ---------------------------
2245 -- Set_Identifier_Casing --
2246 ---------------------------
2248 procedure Set_Identifier_Casing
2249 (Identifier_Name
: System
.Address
;
2250 File_Name
: System
.Address
)
2252 Ident
: constant Big_String_Ptr
:= To_Big_String_Ptr
(Identifier_Name
);
2253 File
: constant Big_String_Ptr
:= To_Big_String_Ptr
(File_Name
);
2256 Desired_Case
: Casing_Type
:= Mixed_Case
;
2257 -- Casing required for result. Default value of Mixed_Case is used if
2258 -- for some reason we cannot find the right file name in the table.
2261 -- Get length of file name
2264 while File
(Flen
+ 1) /= ASCII
.NUL
loop
2268 -- Loop through file names to find matching one. This is a bit slow, but
2269 -- we only do it in error situations so it is not so terrible. Note that
2270 -- if the loop does not exit, then the desired case will be left set to
2271 -- Mixed_Case, this can happen if the name was not in canonical form,
2272 -- and gets canonicalized on VMS. Possibly we could fix this by
2273 -- unconditionally canonicalizing these names ???
2275 for J
in 1 .. Last_Source_File
loop
2276 Get_Name_String
(Full_Debug_Name
(J
));
2279 and then Name_Buffer
(1 .. Name_Len
) = String (File
(1 .. Flen
))
2281 Desired_Case
:= Identifier_Casing
(J
);
2286 -- Copy identifier as given to Name_Buffer
2288 for J
in Name_Buffer
'Range loop
2289 Name_Buffer
(J
) := Ident
(J
);
2291 if Name_Buffer
(J
) = ASCII
.NUL
then
2297 Set_Casing
(Desired_Case
);
2298 end Set_Identifier_Casing
;
2300 -----------------------
2301 -- Set_Ignore_Errors --
2302 -----------------------
2304 procedure Set_Ignore_Errors
(To
: Boolean) is
2306 Errors_Must_Be_Ignored
:= To
;
2307 end Set_Ignore_Errors
;
2309 ------------------------------
2310 -- Set_Msg_Insertion_Column --
2311 ------------------------------
2313 procedure Set_Msg_Insertion_Column
is
2315 if RM_Column_Check
then
2316 Set_Msg_Str
(" in column ");
2317 Set_Msg_Int
(Int
(Error_Msg_Col
) + 1);
2319 end Set_Msg_Insertion_Column
;
2321 ----------------------------
2322 -- Set_Msg_Insertion_Node --
2323 ----------------------------
2325 procedure Set_Msg_Insertion_Node
is
2330 Error_Msg_Node_1
= Error
2331 or else Error_Msg_Node_1
= Any_Type
;
2333 if Error_Msg_Node_1
= Empty
then
2334 Set_Msg_Blank_Conditional
;
2335 Set_Msg_Str
("<empty>");
2337 elsif Error_Msg_Node_1
= Error
then
2339 Set_Msg_Str
("<error>");
2341 elsif Error_Msg_Node_1
= Standard_Void_Type
then
2343 Set_Msg_Str
("procedure name");
2345 elsif Nkind
(Error_Msg_Node_1
) in N_Entity
2346 and then Ekind
(Error_Msg_Node_1
) = E_Anonymous_Access_Subprogram_Type
2349 Set_Msg_Str
("access to subprogram");
2352 Set_Msg_Blank_Conditional
;
2356 K
:= Nkind
(Error_Msg_Node_1
);
2358 -- If we have operator case, skip quotes since name of operator
2359 -- itself will supply the required quotations. An operator can be an
2360 -- applied use in an expression or an explicit operator symbol, or an
2361 -- identifier whose name indicates it is an operator.
2364 or else K
= N_Operator_Symbol
2365 or else K
= N_Defining_Operator_Symbol
2366 or else ((K
= N_Identifier
or else K
= N_Defining_Identifier
)
2367 and then Is_Operator_Name
(Chars
(Error_Msg_Node_1
)))
2369 Set_Msg_Node
(Error_Msg_Node_1
);
2371 -- Normal case, not an operator, surround with quotes
2375 Set_Qualification
(Error_Msg_Qual_Level
, Error_Msg_Node_1
);
2376 Set_Msg_Node
(Error_Msg_Node_1
);
2381 -- The following assignment ensures that a second ampersand insertion
2382 -- character will correspond to the Error_Msg_Node_2 parameter. We
2383 -- suppress possible validity checks in case operating in -gnatVa mode,
2384 -- and Error_Msg_Node_2 is not needed and has not been set.
2387 pragma Suppress
(Range_Check
);
2389 Error_Msg_Node_1
:= Error_Msg_Node_2
;
2391 end Set_Msg_Insertion_Node
;
2393 --------------------------------------
2394 -- Set_Msg_Insertion_Type_Reference --
2395 --------------------------------------
2397 procedure Set_Msg_Insertion_Type_Reference
(Flag
: Source_Ptr
) is
2403 if Error_Msg_Node_1
= Standard_Void_Type
then
2404 Set_Msg_Str
("package or procedure name");
2407 elsif Error_Msg_Node_1
= Standard_Exception_Type
then
2408 Set_Msg_Str
("exception name");
2411 elsif Error_Msg_Node_1
= Any_Access
2412 or else Error_Msg_Node_1
= Any_Array
2413 or else Error_Msg_Node_1
= Any_Boolean
2414 or else Error_Msg_Node_1
= Any_Character
2415 or else Error_Msg_Node_1
= Any_Composite
2416 or else Error_Msg_Node_1
= Any_Discrete
2417 or else Error_Msg_Node_1
= Any_Fixed
2418 or else Error_Msg_Node_1
= Any_Integer
2419 or else Error_Msg_Node_1
= Any_Modular
2420 or else Error_Msg_Node_1
= Any_Numeric
2421 or else Error_Msg_Node_1
= Any_Real
2422 or else Error_Msg_Node_1
= Any_Scalar
2423 or else Error_Msg_Node_1
= Any_String
2425 Get_Unqualified_Decoded_Name_String
(Chars
(Error_Msg_Node_1
));
2426 Set_Msg_Name_Buffer
;
2429 elsif Error_Msg_Node_1
= Universal_Real
then
2430 Set_Msg_Str
("type universal real");
2433 elsif Error_Msg_Node_1
= Universal_Integer
then
2434 Set_Msg_Str
("type universal integer");
2437 elsif Error_Msg_Node_1
= Universal_Fixed
then
2438 Set_Msg_Str
("type universal fixed");
2442 -- Special case of anonymous array
2444 if Nkind
(Error_Msg_Node_1
) in N_Entity
2445 and then Is_Array_Type
(Error_Msg_Node_1
)
2446 and then Present
(Related_Array_Object
(Error_Msg_Node_1
))
2448 Set_Msg_Str
("type of ");
2449 Set_Msg_Node
(Related_Array_Object
(Error_Msg_Node_1
));
2450 Set_Msg_Str
(" declared");
2451 Set_Msg_Insertion_Line_Number
2452 (Sloc
(Related_Array_Object
(Error_Msg_Node_1
)), Flag
);
2456 -- If we fall through, it is not a special case, so first output
2457 -- the name of the type, preceded by private for a private type
2459 if Is_Private_Type
(Error_Msg_Node_1
) then
2460 Set_Msg_Str
("private type ");
2462 Set_Msg_Str
("type ");
2465 Ent
:= Error_Msg_Node_1
;
2467 if Is_Internal_Name
(Chars
(Ent
)) then
2468 Unwind_Internal_Type
(Ent
);
2471 -- Types in Standard are displayed as "Standard.name"
2473 if Sloc
(Ent
) <= Standard_Location
then
2475 Set_Msg_Str
("Standard.");
2480 -- Types in other language defined units are displayed as
2481 -- "package-name.type-name"
2484 Is_Predefined_File_Name
(Unit_File_Name
(Get_Source_Unit
(Ent
)))
2486 Get_Unqualified_Decoded_Name_String
2487 (Unit_Name
(Get_Source_Unit
(Ent
)));
2488 Name_Len
:= Name_Len
- 2;
2489 Set_Msg_Blank_Conditional
;
2491 Set_Casing
(Mixed_Case
);
2492 Set_Msg_Name_Buffer
;
2494 Set_Casing
(Mixed_Case
);
2499 -- All other types display as "type name" defined at line xxx
2500 -- possibly qualified if qualification is requested.
2504 Set_Qualification
(Error_Msg_Qual_Level
, Ent
);
2508 -- If we did not print a name (e.g. in the case of an anonymous
2509 -- subprogram type), there is no name to print, so remove quotes.
2511 if Buffer_Ends_With
('"') then
2512 Buffer_Remove
('"');
2518 -- If the original type did not come from a predefined file, add the
2519 -- location where the type was defined.
2521 if Sloc
(Error_Msg_Node_1
) > Standard_Location
2523 not Is_Predefined_File_Name
2524 (Unit_File_Name
(Get_Source_Unit
(Error_Msg_Node_1
)))
2526 Set_Msg_Str
(" defined");
2527 Set_Msg_Insertion_Line_Number
(Sloc
(Error_Msg_Node_1
), Flag
);
2529 -- If it did come from a predefined file, deal with the case where
2530 -- this was a file with a generic instantiation from elsewhere.
2533 if Sloc
(Error_Msg_Node_1
) > Standard_Location
then
2535 Iloc
: constant Source_Ptr
:=
2536 Instantiation_Location
(Sloc
(Error_Msg_Node_1
));
2539 if Iloc
/= No_Location
2540 and then not Suppress_Instance_Location
2542 Set_Msg_Str
(" from instance");
2543 Set_Msg_Insertion_Line_Number
(Iloc
, Flag
);
2548 end Set_Msg_Insertion_Type_Reference
;
2550 ---------------------------------
2551 -- Set_Msg_Insertion_Unit_Name --
2552 ---------------------------------
2554 procedure Set_Msg_Insertion_Unit_Name
(Suffix
: Boolean := True) is
2556 if Error_Msg_Unit_1
= No_Unit_Name
then
2559 elsif Error_Msg_Unit_1
= Error_Unit_Name
then
2561 Set_Msg_Str
("<error>");
2564 Get_Unit_Name_String
(Error_Msg_Unit_1
, Suffix
);
2567 Set_Msg_Name_Buffer
;
2571 -- The following assignment ensures that a second percent insertion
2572 -- character will correspond to the Error_Msg_Unit_2 parameter. We
2573 -- suppress possible validity checks in case operating in -gnatVa mode,
2574 -- and Error_Msg_Unit_2 is not needed and has not been set.
2577 pragma Suppress
(Range_Check
);
2579 Error_Msg_Unit_1
:= Error_Msg_Unit_2
;
2581 end Set_Msg_Insertion_Unit_Name
;
2587 procedure Set_Msg_Node
(Node
: Node_Id
) is
2592 case Nkind
(Node
) is
2593 when N_Designator
=>
2594 Set_Msg_Node
(Name
(Node
));
2596 Set_Msg_Node
(Identifier
(Node
));
2599 when N_Defining_Program_Unit_Name
=>
2600 Set_Msg_Node
(Name
(Node
));
2602 Set_Msg_Node
(Defining_Identifier
(Node
));
2605 when N_Selected_Component | N_Expanded_Name
=>
2606 Set_Msg_Node
(Prefix
(Node
));
2608 Set_Msg_Node
(Selector_Name
(Node
));
2615 -- The only remaining possibilities are identifiers, defining
2616 -- identifiers, pragmas, and pragma argument associations.
2618 if Nkind
(Node
) = N_Pragma
then
2619 Nam
:= Pragma_Name
(Node
);
2621 -- The other cases have Chars fields, and we want to test for possible
2622 -- internal names, which generally represent something gone wrong. An
2623 -- exception is the case of internal type names, where we try to find a
2624 -- reasonable external representation for the external name
2626 elsif Is_Internal_Name
(Chars
(Node
))
2628 ((Is_Entity_Name
(Node
)
2629 and then Present
(Entity
(Node
))
2630 and then Is_Type
(Entity
(Node
)))
2632 (Nkind
(Node
) = N_Defining_Identifier
and then Is_Type
(Node
)))
2634 if Nkind
(Node
) = N_Identifier
then
2635 Ent
:= Entity
(Node
);
2640 -- If the type is the designated type of an access_to_subprogram,
2641 -- then there is no name to provide in the call.
2643 if Ekind
(Ent
) = E_Subprogram_Type
then
2646 -- Otherwise, we will be able to find some kind of name to output
2649 Unwind_Internal_Type
(Ent
);
2653 -- If not internal name, just use name in Chars field
2656 Nam
:= Chars
(Node
);
2659 -- At this stage, the name to output is in Nam
2661 Get_Unqualified_Decoded_Name_String
(Nam
);
2663 -- Remove trailing upper case letters from the name (useful for
2664 -- dealing with some cases of internal names.
2666 while Name_Len
> 1 and then Name_Buffer
(Name_Len
) in 'A' .. 'Z' loop
2667 Name_Len
:= Name_Len
- 1;
2670 -- If we have any of the names from standard that start with the
2671 -- characters "any " (e.g. Any_Type), then kill the message since
2672 -- almost certainly it is a junk cascaded message.
2675 and then Name_Buffer
(1 .. 4) = "any "
2677 Kill_Message
:= True;
2680 -- Now we have to set the proper case. If we have a source location
2681 -- then do a check to see if the name in the source is the same name
2682 -- as the name in the Names table, except for possible differences
2683 -- in case, which is the case when we can copy from the source.
2686 Src_Loc
: constant Source_Ptr
:= Sloc
(Node
);
2687 Sbuffer
: Source_Buffer_Ptr
;
2689 Src_Ptr
: Source_Ptr
;
2695 -- For standard locations, always use mixed case
2697 if Src_Loc
<= No_Location
2698 or else Sloc
(Node
) <= No_Location
2700 Set_Casing
(Mixed_Case
);
2703 -- Determine if the reference we are dealing with corresponds to
2704 -- text at the point of the error reference. This will often be
2705 -- the case for simple identifier references, and is the case
2706 -- where we can copy the spelling from the source.
2708 Sbuffer
:= Source_Text
(Get_Source_File_Index
(Src_Loc
));
2710 while Ref_Ptr
<= Name_Len
loop
2712 Fold_Lower
(Sbuffer
(Src_Ptr
)) /=
2713 Fold_Lower
(Name_Buffer
(Ref_Ptr
));
2714 Ref_Ptr
:= Ref_Ptr
+ 1;
2715 Src_Ptr
:= Src_Ptr
+ 1;
2718 -- If we get through the loop without a mismatch, then output the
2719 -- name the way it is spelled in the source program
2721 if Ref_Ptr
> Name_Len
then
2724 for J
in 1 .. Name_Len
loop
2725 Name_Buffer
(J
) := Sbuffer
(Src_Ptr
);
2726 Src_Ptr
:= Src_Ptr
+ 1;
2729 -- Otherwise set the casing using the default identifier casing
2732 Set_Casing
(Identifier_Casing
(Flag_Source
), Mixed_Case
);
2737 Set_Msg_Name_Buffer
;
2745 procedure Set_Msg_Text
(Text
: String; Flag
: Source_Ptr
) is
2746 C
: Character; -- Current character
2747 P
: Natural; -- Current index;
2749 procedure Set_Msg_Insertion_Warning
(C
: Character);
2750 -- Deal with ? ?? ?x? ?X? insertion sequences (also < << <x< <X<). The
2751 -- caller has already bumped the pointer past the initial ? or < and C
2752 -- is set to this initial character (? or <).
2754 -------------------------------
2755 -- Set_Msg_Insertion_Warning --
2756 -------------------------------
2758 procedure Set_Msg_Insertion_Warning
(C
: Character) is
2760 if P
<= Text
'Last and then Text
(P
) = C
then
2761 Warning_Msg_Char
:= '?';
2764 elsif P
+ 1 <= Text
'Last
2765 and then (Text
(P
) in 'a' .. 'z'
2767 Text
(P
) in 'A' .. 'Z')
2768 and then Text
(P
+ 1) = C
2770 Warning_Msg_Char
:= Text
(P
);
2773 Warning_Msg_Char
:= ' ';
2775 end Set_Msg_Insertion_Warning
;
2777 -- Start of processing for Set_Msg_Text
2780 Manual_Quote_Mode
:= False;
2782 Flag_Source
:= Get_Source_File_Index
(Flag
);
2785 while P
<= Text
'Last loop
2789 -- Check for insertion character or sequence
2793 if P
<= Text
'Last and then Text
(P
) = '%' then
2795 Set_Msg_Insertion_Name_Literal
;
2797 Set_Msg_Insertion_Name
;
2801 if P
<= Text
'Last and then Text
(P
) = '$' then
2803 Set_Msg_Insertion_Unit_Name
(Suffix
=> False);
2805 Set_Msg_Insertion_Unit_Name
;
2809 Set_Msg_Insertion_File_Name
;
2812 Set_Msg_Insertion_Type_Reference
(Flag
);
2815 Set_Msg_Insertion_Reserved_Name
;
2818 Set_Msg_Insertion_Node
;
2821 Set_Msg_Insertion_Line_Number
(Error_Msg_Sloc
, Flag
);
2824 Continuation
:= True;
2826 if Text
(P
) = '\' then
2827 Continuation_New_Line
:= True;
2832 Set_Msg_Insertion_Column
;
2835 Set_Msg_Insertion_Run_Time_Name
;
2838 Set_Msg_Insertion_Uint
;
2841 Manual_Quote_Mode
:= not Manual_Quote_Mode
;
2845 null; -- already dealt with
2848 Set_Msg_Insertion_Warning
('?');
2852 -- Note: the prescan already set Is_Warning_Msg True if and
2853 -- only if Error_Msg_Warn is set to True. If Error_Msg_Warn
2854 -- is False, the call to Set_Msg_Insertion_Warning here does
2855 -- no harm, since Warning_Msg_Char is ignored in that case.
2857 Set_Msg_Insertion_Warning
('<');
2860 null; -- already dealt with
2863 Set_Msg_Char
(Text
(P
));
2867 Set_Msg_Str
(Error_Msg_String
(1 .. Error_Msg_Strlen
));
2869 -- Upper case letter
2873 -- Start of reserved word if two or more
2875 if P
<= Text
'Last and then Text
(P
) in 'A' .. 'Z' then
2877 Set_Msg_Insertion_Reserved_Word
(Text
, P
);
2879 -- Single upper case letter is just inserted
2885 -- '[' (will be/would have been raised at run time)
2888 if Is_Warning_Msg
then
2889 Set_Msg_Str
("will be raised at run time");
2891 Set_Msg_Str
("would have been raised at run time");
2894 -- ']' (may be/might have been raised at run time)
2897 if Is_Warning_Msg
then
2898 Set_Msg_Str
("may be raised at run time");
2900 Set_Msg_Str
("might have been raised at run time");
2903 -- Normal character with no special treatment
2917 procedure Set_Posted
(N
: Node_Id
) is
2921 if Is_Serious_Error
then
2923 -- We always set Error_Posted on the node itself
2925 Set_Error_Posted
(N
);
2927 -- If it is a subexpression, then set Error_Posted on parents up to
2928 -- and including the first non-subexpression construct. This helps
2929 -- avoid cascaded error messages within a single expression.
2935 Set_Error_Posted
(P
);
2936 exit when Nkind
(P
) not in N_Subexpr
;
2939 -- A special check, if we just posted an error on an attribute
2940 -- definition clause, then also set the entity involved as posted.
2941 -- For example, this stops complaining about the alignment after
2942 -- complaining about the size, which is likely to be useless.
2944 if Nkind
(P
) = N_Attribute_Definition_Clause
then
2945 if Is_Entity_Name
(Name
(P
)) then
2946 Set_Error_Posted
(Entity
(Name
(P
)));
2952 -----------------------
2953 -- Set_Qualification --
2954 -----------------------
2956 procedure Set_Qualification
(N
: Nat
; E
: Entity_Id
) is
2958 if N
/= 0 and then Scope
(E
) /= Standard_Standard
then
2959 Set_Qualification
(N
- 1, Scope
(E
));
2960 Set_Msg_Node
(Scope
(E
));
2963 end Set_Qualification
;
2965 ------------------------
2966 -- Special_Msg_Delete --
2967 ------------------------
2969 -- Is it really right to have all this specialized knowledge in errout?
2971 function Special_Msg_Delete
2973 N
: Node_Or_Entity_Id
;
2974 E
: Node_Or_Entity_Id
) return Boolean
2977 -- Never delete messages in -gnatdO mode
2979 if Debug_Flag_OO
then
2982 -- Processing for "atomic access cannot be guaranteed"
2984 elsif Msg
= "atomic access to & cannot be guaranteed" then
2986 -- When an atomic object refers to a non-atomic type in the same
2987 -- scope, we implicitly make the type atomic. In the non-error case
2988 -- this is surely safe (and in fact prevents an error from occurring
2989 -- if the type is not atomic by default). But if the object cannot be
2990 -- made atomic, then we introduce an extra junk message by this
2991 -- manipulation, which we get rid of here.
2993 -- We identify this case by the fact that it references a type for
2994 -- which Is_Atomic is set, but there is no Atomic pragma setting it.
2997 and then Is_Atomic
(E
)
2998 and then No
(Get_Rep_Pragma
(E
, Name_Atomic
))
3003 -- Processing for "Size too small" messages
3005 elsif Msg
= "size for& too small, minimum allowed is ^" then
3007 -- Suppress "size too small" errors in CodePeer mode, since code may
3008 -- be analyzed in a different configuration than the one used for
3009 -- compilation. Even when the configurations match, this message
3010 -- may be issued on correct code, because pragma Pack is ignored
3011 -- in CodePeer mode.
3013 if CodePeer_Mode
then
3016 -- When a size is wrong for a frozen type there is no explicit size
3017 -- clause, and other errors have occurred, suppress the message,
3018 -- since it is likely that this size error is a cascaded result of
3019 -- other errors. The reason we eliminate unfrozen types is that
3020 -- messages issued before the freeze type are for sure OK.
3023 and then Serious_Errors_Detected
> 0
3024 and then Nkind
(N
) /= N_Component_Clause
3025 and then Nkind
(Parent
(N
)) /= N_Component_Clause
3027 No
(Get_Attribute_Definition_Clause
(E
, Attribute_Size
))
3029 No
(Get_Attribute_Definition_Clause
(E
, Attribute_Object_Size
))
3031 No
(Get_Attribute_Definition_Clause
(E
, Attribute_Value_Size
))
3037 -- All special tests complete, so go ahead with message
3040 end Special_Msg_Delete
;
3042 --------------------------
3043 -- Unwind_Internal_Type --
3044 --------------------------
3046 procedure Unwind_Internal_Type
(Ent
: in out Entity_Id
) is
3047 Derived
: Boolean := False;
3049 Old_Ent
: Entity_Id
;
3052 -- Undo placement of a quote, since we will put it back later
3054 Mchar
:= Msg_Buffer
(Msglen
);
3057 Msglen
:= Msglen
- 1;
3060 -- The loop here deals with recursive types, we are trying to find a
3061 -- related entity that is not an implicit type. Note that the check with
3062 -- Old_Ent stops us from getting "stuck". Also, we don't output the
3063 -- "type derived from" message more than once in the case where we climb
3064 -- up multiple levels.
3069 -- Implicit access type, use directly designated type In Ada 2005,
3070 -- the designated type may be an anonymous access to subprogram, in
3071 -- which case we can only point to its definition.
3073 if Is_Access_Type
(Ent
) then
3074 if Ekind
(Ent
) = E_Access_Subprogram_Type
3075 or else Ekind
(Ent
) = E_Anonymous_Access_Subprogram_Type
3076 or else Is_Access_Protected_Subprogram_Type
(Ent
)
3078 Ent
:= Directly_Designated_Type
(Ent
);
3080 if not Comes_From_Source
(Ent
) then
3081 if Buffer_Ends_With
("type ") then
3082 Buffer_Remove
("type ");
3086 if Ekind
(Ent
) = E_Function
then
3087 Set_Msg_Str
("access to function ");
3088 elsif Ekind
(Ent
) = E_Procedure
then
3089 Set_Msg_Str
("access to procedure ");
3091 Set_Msg_Str
("access to subprogram");
3096 -- Type is access to object, named or anonymous
3099 Set_Msg_Str
("access to ");
3100 Ent
:= Directly_Designated_Type
(Ent
);
3105 elsif Is_Class_Wide_Type
(Ent
) then
3107 Ent
:= Root_Type
(Ent
);
3109 -- Use base type if this is a subtype
3111 elsif Ent
/= Base_Type
(Ent
) then
3112 Buffer_Remove
("type ");
3114 -- Avoid duplication "subtype of subtype of", and also replace
3115 -- "derived from subtype of" simply by "derived from"
3117 if not Buffer_Ends_With
("subtype of ")
3118 and then not Buffer_Ends_With
("derived from ")
3120 Set_Msg_Str
("subtype of ");
3123 Ent
:= Base_Type
(Ent
);
3125 -- If this is a base type with a first named subtype, use the first
3126 -- named subtype instead. This is not quite accurate in all cases,
3127 -- but it makes too much noise to be accurate and add 'Base in all
3128 -- cases. Note that we only do this is the first named subtype is not
3129 -- itself an internal name. This avoids the obvious loop (subtype ->
3130 -- basetype -> subtype) which would otherwise occur).
3134 FST
: constant Entity_Id
:= First_Subtype
(Ent
);
3137 if not Is_Internal_Name
(Chars
(FST
)) then
3141 -- Otherwise use root type
3145 Buffer_Remove
("type ");
3147 -- Test for "subtype of type derived from" which seems
3148 -- excessive and is replaced by "type derived from".
3150 Buffer_Remove
("subtype of");
3152 -- Avoid duplicated "type derived from type derived from"
3154 if not Buffer_Ends_With
("type derived from ") then
3155 Set_Msg_Str
("type derived from ");
3166 -- If we are stuck in a loop, get out and settle for the internal
3167 -- name after all. In this case we set to kill the message if it is
3168 -- not the first error message (we really try hard not to show the
3169 -- dirty laundry of the implementation to the poor user).
3171 if Ent
= Old_Ent
then
3172 Kill_Message
:= True;
3176 -- Get out if we finally found a non-internal name to use
3178 exit Find
when not Is_Internal_Name
(Chars
(Ent
));
3184 end Unwind_Internal_Type
;
3190 procedure VMS_Convert
is
3200 P
:= Msg_Buffer
'First;
3206 if Msg_Buffer
(P
) = '-' then
3207 for G
in Gnames
'Range loop
3208 L
:= Gnames
(G
)'Length;
3210 -- See if we have "-ggg switch", where ggg is Gnames entry
3212 if P
+ L
+ 7 <= Msglen
3213 and then Msg_Buffer
(P
+ 1 .. P
+ L
) = Gnames
(G
).all
3214 and then Msg_Buffer
(P
+ L
+ 1 .. P
+ L
+ 7) = " switch"
3216 -- Replace by "/vvv qualifier", where vvv is Vnames entry
3218 N
:= Vnames
(G
)'Length;
3219 Msg_Buffer
(P
+ N
+ 11 .. Msglen
+ N
- L
+ 3) :=
3220 Msg_Buffer
(P
+ L
+ 8 .. Msglen
);
3221 Msg_Buffer
(P
) := '/';
3222 Msg_Buffer
(P
+ 1 .. P
+ N
) := Vnames
(G
).all;
3223 Msg_Buffer
(P
+ N
+ 1 .. P
+ N
+ 10) := " qualifier";
3225 Msglen
:= Msglen
+ N
- L
+ 3;