1 ------------------------------------------------------------------------------
3 -- GNAT COMPILER COMPONENTS --
11 -- Copyright (C) 1992-2001 Free Software Foundation, Inc. --
13 -- GNAT is free software; you can redistribute it and/or modify it under --
14 -- terms of the GNU General Public License as published by the Free Soft- --
15 -- ware Foundation; either version 2, or (at your option) any later ver- --
16 -- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
17 -- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
18 -- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License --
19 -- for more details. You should have received a copy of the GNU General --
20 -- Public License distributed with GNAT; see file COPYING. If not, write --
21 -- to the Free Software Foundation, 59 Temple Place - Suite 330, Boston, --
22 -- MA 02111-1307, USA. --
24 -- GNAT was originally developed by the GNAT team at New York University. --
25 -- It is now maintained by Ada Core Technologies Inc (http://www.gnat.com). --
27 ------------------------------------------------------------------------------
29 -- This package contains routines called when a fatal internal compiler
30 -- error is detected. Calls to these routines cause termination of the
31 -- current compilation with appropriate error output.
33 with Atree; use Atree;
34 with Debug; use Debug;
35 with Errout; use Errout;
36 with Fname; use Fname;
37 with Gnatvsn; use Gnatvsn;
39 with Namet; use Namet;
40 with Osint; use Osint;
41 with Output; use Output;
42 with Sinput; use Sinput;
43 with Sprint; use Sprint;
44 with Sdefault; use Sdefault;
45 with Treepr; use Treepr;
46 with Types; use Types;
48 with Ada.Exceptions; use Ada.Exceptions;
50 with System.Soft_Links; use System.Soft_Links;
52 package body Comperr is
58 Abort_In_Progress : Boolean := False;
59 -- Used to prevent runaway recursion if something segfaults
60 -- while processing a previous abort.
62 -----------------------
63 -- Local Subprograms --
64 -----------------------
66 procedure Repeat_Char (Char : Character; Col : Nat; After : Character);
67 -- Output Char until current column is at or past Col, and then output
68 -- the character given by After (if column is already past Col on entry,
69 -- then the effect is simply to output the After character).
75 procedure Compiler_Abort
80 -- Add blanks up to column 76, and then a final vertical bar
84 Repeat_Char (' ', 76, '|');
88 Public_Version : constant Boolean := (Gnat_Version_String (5) = 'p');
90 -- Start of processing for Compiler_Abort
93 -- Prevent recursion through Compiler_Abort, e.g. via SIGSEGV.
95 if Abort_In_Progress then
96 Exit_Program (E_Abort);
99 Abort_In_Progress := True;
101 -- If errors have already occurred, then we guess that the abort may
102 -- well be caused by previous errors, and we don't make too much fuss
103 -- about it, since we want to let the programmer fix the errors first.
105 -- Debug flag K disables this behavior (useful for debugging)
107 if Errors_Detected /= 0 and then not Debug_Flag_K then
111 Write_Str ("compilation abandoned due to previous error");
117 Exit_Program (E_Errors);
119 -- Otherwise give message with details of the abort
124 -- Generate header for bug box
127 Repeat_Char ('=', 29, 'G');
128 Write_Str ("NAT BUG DETECTED");
129 Repeat_Char ('=', 76, '+');
132 -- Output GNAT version identification
135 Write_Str (Gnat_Version_String);
138 -- Output target name, deleting junk final reverse slash
140 if Target_Name.all (Target_Name.all'Last) = '\'
141 or else Target_Name.all (Target_Name.all'Last) = '/'
143 Write_Str (Target_Name.all (1 .. Target_Name.all'Last - 1));
145 Write_Str (Target_Name.all);
148 -- Output identification of error
152 if X'Length + Column > 76 then
154 Write_Str ("GCC error:");
162 if X'Length > 70 then
164 Last_Blank : Integer := 70;
167 for P in 40 .. 69 loop
173 Write_Str (X (1 .. Last_Blank));
176 Write_Str (X (Last_Blank + 1 .. X'Length));
183 Write_Str (", Code=");
184 Write_Int (Int (Code));
188 -- For exception case, get exception message from the TSD. Note
189 -- that it would be neater and cleaner to pass the exception
190 -- message (obtained from Exception_Message) as a parameter to
191 -- Compiler_Abort, but we can't do this quite yet since it would
192 -- cause bootstrap path problems for 3.10 to 3.11.
195 Write_Str (Exception_Message (Get_Current_Excep.all.all));
200 -- Output source location information
202 if Sloc (Current_Error_Node) <= Standard_Location
203 or else Sloc (Current_Error_Node) = No_Location
205 Write_Str ("| No source file position information available");
208 Write_Str ("| Error detected at ");
209 Write_Location (Sloc (Current_Error_Node));
213 -- There are two cases now. If the file gnat_bug.box exists,
214 -- we use the contents of this file at this point.
219 Src : Source_Buffer_Ptr;
223 Name_Buffer (1 .. 12) := "gnat_bug.box";
225 Read_Source_File (Name_Enter, 0, Hi, Src);
227 -- If we get a Src file, we use it
232 Outer : while Lo < Hi loop
236 exit Inner when Src (Lo) = ASCII.CR
237 or else Src (Lo) = ASCII.LF;
238 Write_Char (Src (Lo));
245 and then (Src (Lo) = ASCII.CR
246 or else Src (Lo) = ASCII.LF)
252 -- Otherwise we use the standard fixed text
256 ("| Please submit bug report by email to report@gnat.com.");
259 if not Public_Version then
261 ("| Use a subject line meaningful to you" &
262 " and us to track the bug.");
266 ("| (include your customer number #nnn " &
267 "in the subject line).");
272 ("| Include the entire contents of this bug " &
273 "box in the report.");
277 ("| Include the exact gcc or gnatmake command " &
278 "that you entered.");
282 ("| Also include sources listed below in gnatchop format");
286 ("| (concatenated together with no headers between files).");
289 if Public_Version then
291 ("| (use plain ASCII or MIME attachment).");
295 ("| See gnatinfo.txt for full info on procedure " &
296 "for submitting bugs.");
301 ("| (use plain ASCII or MIME attachment, or FTP "
302 & "to your customer directory).");
306 ("| See README.GNATPRO for full info on procedure " &
307 "for submitting bugs.");
313 -- Complete output of bug box
316 Repeat_Char ('=', 76, '+');
322 Print_Tree_Node (Current_Error_Node);
328 Write_Line ("Please include these source files with error report");
331 for U in Main_Unit .. Last_Unit loop
333 if not Is_Internal_File_Name
334 (File_Name (Source_Index (U)))
336 Write_Name (Full_File_Name (Source_Index (U)));
340 -- No point in double bug box if we blow up trying to print
341 -- the list of file names! Output informative msg and quit.
345 Write_Str ("list may be incomplete");
355 raise Unrecoverable_Error;
364 procedure Repeat_Char (Char : Character; Col : Nat; After : Character) is
366 while Column < Col loop