obtained gcc-4.6.4.tar.bz2 from upstream website;upstream

verified gcc-4.6.4.tar.bz2.sig;
imported gcc-4.6.4 source tree from verified upstream tarball.

downloading a git-generated archive based on the 'upstream' tag
should provide you with a source tree that is binary identical
to the one extracted from the above tarball.

if you have obtained the source via the command 'git clone',
however, do note that line-endings of files in your working
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1 files changed, 93 insertions, 0 deletions

diff --git a/gcc/ada/g-io.ads b/gcc/ada/g-io.ads
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+------------------------------------------------------------------------------
+--                                                                          --
+--                         GNAT RUN-TIME COMPONENTS                         --
+--                                                                          --
+--                              G N A T . I O                               --
+--                                                                          --
+--                                 S p e c                                  --
+--                                                                          --
+--                     Copyright (C) 1995-2005, AdaCore                     --
+--                                                                          --
+-- 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.                                              --
+--                                                                          --
+-- As a special exception,  if other files  instantiate  generics from this --
+-- unit, or you link  this unit with other files  to produce an executable, --
+-- this  unit  does not  by itself cause  the resulting  executable  to  be --
+-- covered  by the  GNU  General  Public  License.  This exception does not --
+-- however invalidate  any other reasons why  the executable file  might be --
+-- covered by the  GNU Public License.                                      --
+--                                                                          --
+-- GNAT was originally developed  by the GNAT team at  New York University. --
+-- Extensive contributions were provided by Ada Core Technologies Inc.      --
+--                                                                          --
+------------------------------------------------------------------------------
+
+--  A simple preelaborable subset of Text_IO capabilities
+
+--  A simple text I/O package that can be used for simple I/O functions in
+--  user programs as required. This package is also preelaborated, unlike
+--  Text_IO, and can thus be with'ed by preelaborated library units.
+
+--  Note that Data_Error is not raised by these subprograms for bad data.
+--  If such checks are needed then the regular Text_IO package must be used.
+
+package GNAT.IO is
+   pragma Preelaborate;
+
+   type File_Type is limited private;
+   --  Specifies file to be used (the only possibilities are Standard_Output
+   --  and Standard_Error). There is no Create or Open facility that would
+   --  allow more general use of file names.
+
+   function Standard_Output return File_Type;
+   function Standard_Error  return File_Type;
+   --  These functions are the only way to get File_Type values
+
+   procedure Get (X : out Integer);
+   procedure Get (C : out Character);
+   procedure Get_Line (Item : out String; Last : out Natural);
+   --  These routines always read from Standard_Input
+
+   procedure Put (File : File_Type; X : Integer);
+   procedure Put (X : Integer);
+   --  Output integer to specified file, or to current output file, same
+   --  output as if Ada.Text_IO.Integer_IO had been instantiated for Integer.
+
+   procedure Put (File : File_Type; C : Character);
+   procedure Put (C : Character);
+   --  Output character to specified file, or to current output file
+
+   procedure Put (File : File_Type; S : String);
+   procedure Put (S : String);
+   --  Output string to specified file, or to current output file
+
+   procedure Put_Line (File : File_Type; S : String);
+   procedure Put_Line (S : String);
+   --  Output string followed by new line to specified file, or to
+   --  current output file.
+
+   procedure New_Line (File : File_Type; Spacing : Positive := 1);
+   procedure New_Line (Spacing : Positive := 1);
+   --  Output new line character to specified file, or to current output file
+
+   procedure Set_Output (File : File_Type);
+   --  Set current output file, default is Standard_Output if no call to
+   --  Set_Output is made.
+
+private
+   type File_Type is (Stdout, Stderr);
+   --  Stdout = Standard_Output, Stderr = Standard_Error
+
+   pragma Inline (Standard_Error);
+   pragma Inline (Standard_Output);
+
+end GNAT.IO;