1 ------------------------------------------------------------------------------
3 -- GNAT COMPILER COMPONENTS --
9 -- Copyright (C) 1992-2003 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, 59 Temple Place - Suite 330, Boston, --
20 -- MA 02111-1307, USA. --
22 -- GNAT was originally developed by the GNAT team at New York University. --
23 -- Extensive contributions were provided by Ada Core Technologies Inc. --
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 Ada Core Technologies.
83 Public_Version : constant Boolean := Gnat_Version_Type = "PUBLIC ";
84 -- Set True for the public version of GNAT
86 GNATPRO_Version : constant Boolean := Gnat_Version_Type = "GNATPRO";
87 -- Set True for the GNATPRO version of GNAT
90 -- Add blanks up to column 76, and then a final vertical bar
98 Repeat_Char (' ', 76, '|');
102 -- Start of processing for Compiler_Abort
105 -- Prevent recursion through Compiler_Abort, e.g. via SIGSEGV.
107 if Abort_In_Progress then
108 Exit_Program (E_Abort);
111 Abort_In_Progress := True;
113 -- If any errors have already occurred, then we guess that the abort
114 -- may well be caused by previous errors, and we don't make too much
115 -- fuss about it, since we want to let programmer fix the errors first.
117 -- Debug flag K disables this behavior (useful for debugging)
119 if Serious_Errors_Detected /= 0 and then not Debug_Flag_K then
123 Write_Str ("compilation abandoned due to previous error");
129 Exit_Program (E_Errors);
131 -- Otherwise give message with details of the abort
136 -- Generate header for bug box
139 Repeat_Char ('=', 29, 'G');
140 Write_Str ("NAT BUG DETECTED");
141 Repeat_Char ('=', 76, '+');
144 -- Output GNAT version identification
147 Write_Str (Gnat_Version_String);
150 -- Output target name, deleting junk final reverse slash
152 if Target_Name.all (Target_Name.all'Last) = '\'
153 or else Target_Name.all (Target_Name.all'Last) = '/'
155 Write_Str (Target_Name.all (1 .. Target_Name.all'Last - 1));
157 Write_Str (Target_Name.all);
160 -- Output identification of error
164 if X'Length + Column > 76 then
166 Write_Str ("GCC error:");
174 if X'Length > 70 then
176 Last_Blank : Integer := 70;
179 for P in 40 .. 69 loop
185 Write_Str (X (1 .. Last_Blank));
188 Write_Str (X (Last_Blank + 1 .. X'Length));
195 Write_Str (", Code=");
196 Write_Int (Int (Code));
200 -- For exception case, get exception message from the TSD. Note
201 -- that it would be neater and cleaner to pass the exception
202 -- message (obtained from Exception_Message) as a parameter to
203 -- Compiler_Abort, but we can't do this quite yet since it would
204 -- cause bootstrap path problems for 3.10 to 3.11.
207 Write_Str (Exception_Message (Get_Current_Excep.all.all));
212 -- Output source location information
214 if Sloc (Current_Error_Node) <= Standard_Location
215 or else Sloc (Current_Error_Node) = No_Location
217 Write_Str ("| No source file position information available");
220 Write_Str ("| Error detected at ");
221 Write_Location (Sloc (Current_Error_Node));
225 -- There are two cases now. If the file gnat_bug.box exists,
226 -- we use the contents of this file at this point.
231 Src : Source_Buffer_Ptr;
235 Name_Buffer (1 .. 12) := "gnat_bug.box";
237 Read_Source_File (Name_Enter, 0, Hi, Src);
239 -- If we get a Src file, we use it
244 Outer : while Lo < Hi loop
248 exit Inner when Src (Lo) = ASCII.CR
249 or else Src (Lo) = ASCII.LF;
250 Write_Char (Src (Lo));
257 and then (Src (Lo) = ASCII.CR
258 or else Src (Lo) = ASCII.LF)
264 -- Otherwise we use the standard fixed text
267 if Public_Version or GNATPRO_Version then
269 ("| Please submit bug report by email " &
270 "to report@gnat.com.");
274 ("| Use a subject line meaningful to you" &
275 " and us to track the bug.");
280 ("| Please submit a bug report; see" &
281 " http://gcc.gnu.org/bugs.html.");
285 if GNATPRO_Version then
287 ("| (include your customer number #nnn " &
288 "in the subject line).");
293 ("| Include the entire contents of this bug " &
294 "box in the report.");
298 ("| Include the exact gcc or gnatmake command " &
299 "that you entered.");
303 ("| Also include sources listed below in gnatchop format");
307 ("| (concatenated together with no headers between files).");
310 if Public_Version then
312 ("| (use plain ASCII or MIME attachment).");
316 ("| See gnatinfo.txt for full info on procedure " &
317 "for submitting bugs.");
320 elsif GNATPRO_Version then
322 ("| (use plain ASCII or MIME attachment, or FTP "
323 & "to your customer directory).");
327 ("| See README.GNATPRO for full info on procedure " &
328 "for submitting bugs.");
334 -- Complete output of bug box
337 Repeat_Char ('=', 76, '+');
343 Print_Tree_Node (Current_Error_Node);
349 Write_Line ("Please include these source files with error report");
350 Write_Line ("Note that list may not be accurate in some cases, ");
351 Write_Line ("so please double check that the problem can still ");
352 Write_Line ("be reproduced with the set of files listed.");
355 for U in Main_Unit .. Last_Unit loop
357 if not Is_Internal_File_Name
358 (File_Name (Source_Index (U)))
360 Write_Name (Full_File_Name (Source_Index (U)));
364 -- No point in double bug box if we blow up trying to print
365 -- the list of file names! Output informative msg and quit.
369 Write_Str ("list may be incomplete");
379 raise Unrecoverable_Error;
388 procedure Repeat_Char (Char : Character; Col : Nat; After : Character) is
390 while Column < Col loop