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------------------------------------------------------------------------------
-- --
-- GNAT COMPILER COMPONENTS --
-- --
-- C O M P E R R --
-- --
-- B o d y --
-- --
-- Copyright (C) 1992-2005, Free Software Foundation, Inc. --
-- --
-- GNAT is free software; you can redistribute it and/or modify it under --
-- terms of the GNU General Public License as published by the Free Soft- --
-- ware Foundation; either version 2, or (at your option) any later ver- --
-- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
-- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
-- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License --
-- for more details. You should have received a copy of the GNU General --
-- Public License distributed with GNAT; see file COPYING. If not, write --
-- to the Free Software Foundation, 51 Franklin Street, Fifth Floor, --
-- Boston, MA 02110-1301, USA. --
-- --
-- GNAT was originally developed by the GNAT team at New York University. --
-- Extensive contributions were provided by AdaCore. --
-- --
------------------------------------------------------------------------------
-- This package contains routines called when a fatal internal compiler
-- error is detected. Calls to these routines cause termination of the
-- current compilation with appropriate error output.
with Atree; use Atree;
with Debug; use Debug;
with Errout; use Errout;
with Fname; use Fname;
with Gnatvsn; use Gnatvsn;
with Lib; use Lib;
with Namet; use Namet;
with Osint; use Osint;
with Output; use Output;
with Sinput; use Sinput;
with Sprint; use Sprint;
with Sdefault; use Sdefault;
with Treepr; use Treepr;
with Types; use Types;
with Ada.Exceptions; use Ada.Exceptions;
with System.Soft_Links; use System.Soft_Links;
package body Comperr is
----------------
-- Local Data --
----------------
Abort_In_Progress : Boolean := False;
-- Used to prevent runaway recursion if something segfaults
-- while processing a previous abort.
-----------------------
-- Local Subprograms --
-----------------------
procedure Repeat_Char (Char : Character; Col : Nat; After : Character);
-- Output Char until current column is at or past Col, and then output
-- the character given by After (if column is already past Col on entry,
-- then the effect is simply to output the After character).
--------------------
-- Compiler_Abort --
--------------------
procedure Compiler_Abort
(X : String;
Code : Integer := 0)
is
-- The procedures below output a "bug box" with information about
-- the cause of the compiler abort and about the preferred method
-- of reporting bugs. The default is a bug box appropriate for
-- the FSF version of GNAT, but there are specializations for
-- the GNATPRO and Public releases by AdaCore.
procedure End_Line;
-- Add blanks up to column 76, and then a final vertical bar
--------------
-- End_Line --
--------------
procedure End_Line is
begin
Repeat_Char (' ', 76, '|');
Write_Eol;
end End_Line;
Is_Public_Version : constant Boolean := Get_Gnat_Build_Type = Public;
Is_FSF_Version : constant Boolean := Get_Gnat_Build_Type = FSF;
-- Start of processing for Compiler_Abort
begin
-- Prevent recursion through Compiler_Abort, e.g. via SIGSEGV
if Abort_In_Progress then
Exit_Program (E_Abort);
end if;
Abort_In_Progress := True;
-- If any errors have already occurred, then we guess that the abort
-- may well be caused by previous errors, and we don't make too much
-- fuss about it, since we want to let programmer fix the errors first.
-- Debug flag K disables this behavior (useful for debugging)
if Serious_Errors_Detected /= 0 and then not Debug_Flag_K then
Errout.Finalize;
Set_Standard_Error;
Write_Str ("compilation abandoned due to previous error");
Write_Eol;
Set_Standard_Output;
Source_Dump;
Tree_Dump;
Exit_Program (E_Errors);
-- Otherwise give message with details of the abort
else
Set_Standard_Error;
-- Generate header for bug box
Write_Char ('+');
Repeat_Char ('=', 29, 'G');
Write_Str ("NAT BUG DETECTED");
Repeat_Char ('=', 76, '+');
Write_Eol;
-- Output GNAT version identification
Write_Str ("| ");
Write_Str (Gnat_Version_String);
Write_Str (" (");
-- Output target name, deleting junk final reverse slash
if Target_Name.all (Target_Name.all'Last) = '\'
or else Target_Name.all (Target_Name.all'Last) = '/'
then
Write_Str (Target_Name.all (1 .. Target_Name.all'Last - 1));
else
Write_Str (Target_Name.all);
end if;
-- Output identification of error
Write_Str (") ");
if X'Length + Column > 76 then
if Code < 0 then
Write_Str ("GCC error:");
end if;
End_Line;
Write_Str ("| ");
end if;
if X'Length > 70 then
declare
Last_Blank : Integer := 70;
begin
for P in 40 .. 69 loop
-- LLVM local
if X (X'First + P - 1) = ' ' then
Last_Blank := P;
end if;
end loop;
-- LLVM local
Write_Str (X (X'First .. X'First + Last_Blank - 1));
End_Line;
Write_Str ("| ");
-- LLVM local
Write_Str (X (X'First + Last_Blank .. X'Last));
end;
else
Write_Str (X);
end if;
if Code > 0 then
Write_Str (", Code=");
Write_Int (Int (Code));
elsif Code = 0 then
-- For exception case, get exception message from the TSD. Note
-- that it would be neater and cleaner to pass the exception
-- message (obtained from Exception_Message) as a parameter to
-- Compiler_Abort, but we can't do this quite yet since it would
-- cause bootstrap path problems for 3.10 to 3.11.
Write_Char (' ');
Write_Str (Exception_Message (Get_Current_Excep.all.all));
end if;
End_Line;
-- Output source location information
if Sloc (Current_Error_Node) <= Standard_Location
or else Sloc (Current_Error_Node) = No_Location
then
Write_Str ("| No source file position information available");
End_Line;
else
Write_Str ("| Error detected at ");
Write_Location (Sloc (Current_Error_Node));
End_Line;
end if;
-- There are two cases now. If the file gnat_bug.box exists,
-- we use the contents of this file at this point.
declare
Lo : Source_Ptr;
Hi : Source_Ptr;
Src : Source_Buffer_Ptr;
begin
Namet.Unlock;
Name_Buffer (1 .. 12) := "gnat_bug.box";
Name_Len := 12;
Read_Source_File (Name_Enter, 0, Hi, Src);
-- If we get a Src file, we use it
if Src /= null then
Lo := 0;
Outer : while Lo < Hi loop
Write_Str ("| ");
Inner : loop
exit Inner when Src (Lo) = ASCII.CR
or else Src (Lo) = ASCII.LF;
Write_Char (Src (Lo));
Lo := Lo + 1;
end loop Inner;
End_Line;
while Lo <= Hi
and then (Src (Lo) = ASCII.CR
or else Src (Lo) = ASCII.LF)
loop
Lo := Lo + 1;
end loop;
end loop Outer;
-- Otherwise we use the standard fixed text
else
if Is_FSF_Version then
Write_Str
("| Please submit a bug report; see" &
" http://gcc.gnu.org/bugs.html.");
End_Line;
elsif Is_Public_Version then
Write_Str
("| submit bug report by email " &
"to report@adacore.com.");
End_Line;
Write_Str
("| See gnatinfo.txt for full info on procedure " &
"for submitting bugs.");
End_Line;
else
Write_Str
("| Please submit a bug report using GNAT Tracker:");
End_Line;
Write_Str
("| http://www.adacore.com/gnattracker/ " &
"section 'send a report'.");
End_Line;
Write_Str
("| alternatively submit a bug report by email " &
"to report@adacore.com.");
End_Line;
end if;
Write_Str
("| Use a subject line meaningful to you" &
" and us to track the bug.");
End_Line;
if not (Is_Public_Version or Is_FSF_Version) then
Write_Str
("| Include your customer number #nnn " &
"in the subject line.");
End_Line;
end if;
Write_Str
("| Include the entire contents of this bug " &
"box in the report.");
End_Line;
Write_Str
("| Include the exact gcc or gnatmake command " &
"that you entered.");
End_Line;
Write_Str
("| Also include sources listed below in gnatchop format");
End_Line;
Write_Str
("| (concatenated together with no headers between files).");
End_Line;
if not Is_FSF_Version then
Write_Str
("| Use plain ASCII or MIME attachment.");
End_Line;
end if;
end if;
end;
-- Complete output of bug box
Write_Char ('+');
Repeat_Char ('=', 76, '+');
Write_Eol;
if Debug_Flag_3 then
Write_Eol;
Write_Eol;
Print_Tree_Node (Current_Error_Node);
Write_Eol;
end if;
Write_Eol;
Write_Line ("Please include these source files with error report");
Write_Line ("Note that list may not be accurate in some cases, ");
Write_Line ("so please double check that the problem can still ");
Write_Line ("be reproduced with the set of files listed.");
Write_Eol;
for U in Main_Unit .. Last_Unit loop
begin
if not Is_Internal_File_Name
(File_Name (Source_Index (U)))
then
Write_Name (Full_File_Name (Source_Index (U)));
Write_Eol;
end if;
-- No point in double bug box if we blow up trying to print
-- the list of file names! Output informative msg and quit.
exception
when others =>
Write_Str ("list may be incomplete");
exit;
end;
end loop;
Write_Eol;
Set_Standard_Output;
Tree_Dump;
Source_Dump;
raise Unrecoverable_Error;
end if;
end Compiler_Abort;
-----------------
-- Repeat_Char --
-----------------
procedure Repeat_Char (Char : Character; Col : Nat; After : Character) is
begin
while Column < Col loop
Write_Char (Char);
end loop;
Write_Char (After);
end Repeat_Char;
end Comperr;