1 ------------------------------------------------------------------------------
3 -- GNAT COMPILER COMPONENTS --
9 -- Copyright (C) 1992-2006, 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 2, 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 COPYING. If not, write --
19 -- to the Free Software Foundation, 51 Franklin Street, Fifth Floor, --
20 -- Boston, MA 02110-1301, USA. --
22 -- GNAT was originally developed by the GNAT team at New York University. --
23 -- Extensive contributions were provided by AdaCore. --
25 ------------------------------------------------------------------------------
27 -- This package contains routines called when a fatal internal compiler
28 -- error is detected. Calls to these routines cause termination of the
29 -- current compilation with appropriate error output.
31 with Atree
; use Atree
;
32 with Debug
; use Debug
;
33 with Errout
; use Errout
;
34 with Fname
; use Fname
;
35 with Gnatvsn
; use Gnatvsn
;
37 with Namet
; use Namet
;
38 with Osint
; use Osint
;
39 with Output
; use Output
;
40 with Sinput
; use Sinput
;
41 with Sprint
; use Sprint
;
42 with Sdefault
; use Sdefault
;
43 with Treepr
; use Treepr
;
44 with Types
; use Types
;
46 with Ada
.Exceptions
; use Ada
.Exceptions
;
48 with System
.Soft_Links
; use System
.Soft_Links
;
50 package body Comperr
is
56 Abort_In_Progress
: Boolean := False;
57 -- Used to prevent runaway recursion if something segfaults
58 -- while processing a previous abort.
60 -----------------------
61 -- Local Subprograms --
62 -----------------------
64 procedure Repeat_Char
(Char
: Character; Col
: Nat
; After
: Character);
65 -- Output Char until current column is at or past Col, and then output
66 -- the character given by After (if column is already past Col on entry,
67 -- then the effect is simply to output the After character).
73 procedure Compiler_Abort
77 -- The procedures below output a "bug box" with information about
78 -- the cause of the compiler abort and about the preferred method
79 -- of reporting bugs. The default is a bug box appropriate for
80 -- the FSF version of GNAT, but there are specializations for
81 -- the GNATPRO and Public releases by AdaCore.
83 XF
: constant Positive := X
'First;
84 -- Start index, usually 1, but we won't assume this
87 -- Add blanks up to column 76, and then a final vertical bar
95 Repeat_Char
(' ', 76, '|');
99 Is_GPL_Version
: constant Boolean := Get_Gnat_Build_Type
= GPL
;
100 Is_FSF_Version
: constant Boolean := Get_Gnat_Build_Type
= FSF
;
102 -- Start of processing for Compiler_Abort
105 Cancel_Special_Output
;
107 -- Prevent recursion through Compiler_Abort, e.g. via SIGSEGV
109 if Abort_In_Progress
then
110 Exit_Program
(E_Abort
);
113 Abort_In_Progress
:= True;
115 -- If any errors have already occurred, then we guess that the abort
116 -- may well be caused by previous errors, and we don't make too much
117 -- fuss about it, since we want to let programmer fix the errors first.
119 -- Debug flag K disables this behavior (useful for debugging)
121 if Serious_Errors_Detected
/= 0 and then not Debug_Flag_K
then
125 Write_Str
("compilation abandoned due to previous error");
131 Exit_Program
(E_Errors
);
133 -- Otherwise give message with details of the abort
138 -- Generate header for bug box
141 Repeat_Char
('=', 29, 'G');
142 Write_Str
("NAT BUG DETECTED");
143 Repeat_Char
('=', 76, '+');
146 -- Output GNAT version identification
149 Write_Str
(Gnat_Version_String
);
152 -- Output target name, deleting junk final reverse slash
154 if Target_Name
.all (Target_Name
.all'Last) = '\'
155 or else Target_Name
.all (Target_Name
.all'Last) = '/'
157 Write_Str
(Target_Name
.all (1 .. Target_Name
.all'Last - 1));
159 Write_Str
(Target_Name
.all);
162 -- Output identification of error
166 if X
'Length + Column
> 76 then
168 Write_Str
("GCC error:");
176 if X
'Length > 70 then
178 Last_Blank
: Integer := 70;
181 for P
in 39 .. 68 loop
182 if X
(XF
+ P
) = ' ' then
187 Write_Str
(X
(XF
.. XF
- 1 + Last_Blank
));
190 Write_Str
(X
(XF
+ Last_Blank
.. X
'Last));
197 Write_Str
(", Code=");
198 Write_Int
(Int
(Code
));
202 -- For exception case, get exception message from the TSD. Note
203 -- that it would be neater and cleaner to pass the exception
204 -- message (obtained from Exception_Message) as a parameter to
205 -- Compiler_Abort, but we can't do this quite yet since it would
206 -- cause bootstrap path problems for 3.10 to 3.11.
209 Write_Str
(Exception_Message
(Get_Current_Excep
.all.all));
214 -- Output source location information
216 if Sloc
(Current_Error_Node
) <= Standard_Location
217 or else Sloc
(Current_Error_Node
) = No_Location
219 Write_Str
("| No source file position information available");
222 Write_Str
("| Error detected at ");
223 Write_Location
(Sloc
(Current_Error_Node
));
227 -- There are two cases now. If the file gnat_bug.box exists,
228 -- we use the contents of this file at this point.
233 Src
: Source_Buffer_Ptr
;
237 Name_Buffer
(1 .. 12) := "gnat_bug.box";
239 Read_Source_File
(Name_Enter
, 0, Hi
, Src
);
241 -- If we get a Src file, we use it
246 Outer
: while Lo
< Hi
loop
250 exit Inner
when Src
(Lo
) = ASCII
.CR
251 or else Src
(Lo
) = ASCII
.LF
;
252 Write_Char
(Src
(Lo
));
259 and then (Src
(Lo
) = ASCII
.CR
260 or else Src
(Lo
) = ASCII
.LF
)
266 -- Otherwise we use the standard fixed text
269 if Is_FSF_Version
then
271 ("| Please submit a bug report; see" &
272 " http://gcc.gnu.org/bugs.html.");
275 elsif Is_GPL_Version
then
278 ("| Please submit a bug report by email " &
279 "to report@adacore.com.");
283 ("| GAP members can alternatively use GNAT Tracker:");
287 ("| http://www.adacore.com/ " &
288 "section 'send a report'.");
292 ("| See gnatinfo.txt for full info on procedure " &
293 "for submitting bugs.");
298 ("| Please submit a bug report using GNAT Tracker:");
302 ("| http://www.adacore.com/gnattracker/ " &
303 "section 'send a report'.");
307 ("| alternatively submit a bug report by email " &
308 "to report@adacore.com,");
312 ("| including your customer number #nnn " &
313 "in the subject line.");
318 ("| Use a subject line meaningful to you" &
319 " and us to track the bug.");
323 ("| Include the entire contents of this bug " &
324 "box in the report.");
328 ("| Include the exact gcc or gnatmake command " &
329 "that you entered.");
333 ("| Also include sources listed below in gnatchop format");
337 ("| (concatenated together with no headers between files).");
340 if not Is_FSF_Version
then
342 ("| Use plain ASCII or MIME attachment.");
348 -- Complete output of bug box
351 Repeat_Char
('=', 76, '+');
357 Print_Tree_Node
(Current_Error_Node
);
363 Write_Line
("Please include these source files with error report");
364 Write_Line
("Note that list may not be accurate in some cases, ");
365 Write_Line
("so please double check that the problem can still ");
366 Write_Line
("be reproduced with the set of files listed.");
369 for U
in Main_Unit
.. Last_Unit
loop
371 if not Is_Internal_File_Name
372 (File_Name
(Source_Index
(U
)))
374 Write_Name
(Full_File_Name
(Source_Index
(U
)));
378 -- No point in double bug box if we blow up trying to print
379 -- the list of file names! Output informative msg and quit.
383 Write_Str
("list may be incomplete");
393 raise Unrecoverable_Error
;
402 procedure Repeat_Char
(Char
: Character; Col
: Nat
; After
: Character) is
404 while Column
< Col
loop