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diff --git a/bug.adb b/bug.adb
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+--  Bug handling
+--  Copyright (C) 2002, 2003, 2004, 2005 Tristan Gingold
+--
+--  GHDL is free software; you can redistribute it and/or modify it under
+--  the terms of the GNU General Public License as published by the Free
+--  Software Foundation; either version 2, or (at your option) any later
+--  version.
+--
+--  GHDL is distributed in the hope that it will be useful, but WITHOUT 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
+--  along with GCC; see the file COPYING.  If not, write to the Free
+--  Software Foundation, 59 Temple Place - Suite 330, Boston, MA
+--  02111-1307, USA.
+with Ada.Text_IO; use Ada.Text_IO;
+with Ada.Command_Line; use Ada.Command_Line;
+with GNAT.Directory_Operations;
+with Version; use Version;
+
+package body Bug is
+   --  Declared in the files generated by gnatbind.
+   --  Note: since the string is exported with C convension, there is no way
+   --  to know the length (gnat1 crashes if the string is unconstrained).
+   --  Hopefully, the format of the string seems to be fixed.
+   GNAT_Version : constant String (1 .. 31);
+   pragma Import (C, GNAT_Version, "__gnat_version");
+
+   procedure Disp_Bug_Box (Except : Exception_Occurrence)
+   is
+      Id : Exception_Id;
+   begin
+      New_Line (Standard_Error);
+      Put_Line
+        (Standard_Error,
+         "******************** GHDL Bug occured ****************************");
+      Put_Line
+        (Standard_Error,
+         "Please, report this bug to ghdl@free.fr, with all the output.");
+      Put_Line (Standard_Error, "GHDL version: " & Ghdl_Version);
+      Put_Line (Standard_Error, "Compiled with " & GNAT_Version);
+      Put_Line (Standard_Error, "In directory: " &
+                GNAT.Directory_Operations.Get_Current_Dir);
+      --Put_Line
+      --  ("Program name: " & Command_Name);
+      --Put_Line
+      --  ("Program arguments:");
+      --for I in 1 .. Argument_Count loop
+      --   Put_Line ("  " & Argument (I));
+      --end loop;
+      Put_Line (Standard_Error, "Command line:");
+      Put (Standard_Error, Command_Name);
+      for I in 1 .. Argument_Count loop
+         Put (Standard_Error, ' ');
+         Put (Standard_Error, Argument (I));
+      end loop;
+      New_Line (Standard_Error);
+      Id := Exception_Identity (Except);
+      if Id /= Null_Id then
+         Put_Line (Standard_Error,
+                   "Exception " & Exception_Name (Id) & " raised");
+         --Put_Line ("exception message: " & Exception_Message (Except));
+         Put_Line (Standard_Error,
+                   "Exception information:");
+         Put (Standard_Error, Exception_Information (Except));
+      end if;
+      Put_Line
+        (Standard_Error,
+         "******************************************************************");
+   end Disp_Bug_Box;
+end Bug;