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, 132 insertions, 0 deletions

diff --git a/gcc/ada/binderr.ads b/gcc/ada/binderr.ads
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+------------------------------------------------------------------------------
+--                                                                          --
+--                         GNAT COMPILER COMPONENTS                         --
+--                                                                          --
+--                              B I N D E R R                               --
+--                                                                          --
+--                                 S p e c                                  --
+--                                                                          --
+--          Copyright (C) 1992-2009, 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 3,  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 COPYING3.  If not, go to --
+-- http://www.gnu.org/licenses for a complete copy of the license.          --
+--                                                                          --
+-- GNAT was originally developed  by the GNAT team at  New York University. --
+-- Extensive contributions were provided by Ada Core Technologies Inc.      --
+--                                                                          --
+------------------------------------------------------------------------------
+
+--  This package contains the routines to output error messages for the binder
+--  and also the routines for handling fatal error conditions in the binder.
+
+with Namet; use Namet;
+with Types; use Types;
+
+package Binderr is
+
+   Errors_Detected : Int;
+   --  Number of errors detected so far
+
+   Warnings_Detected : Int;
+   --  Number of warnings detected
+
+   Info_Prefix_Suppress : Boolean := False;
+   --  If set to True, the normal "info: " header before messages generated
+   --  by Error_Msg_Info will be omitted.
+
+   ---------------------------------------------------------
+   -- Error Message Text and Message Insertion Characters --
+   ---------------------------------------------------------
+
+   --  Error message text strings are composed of letters, digits and the
+   --  special characters space, comma, period, colon and semicolon,
+   --  apostrophe and parentheses. Special insertion characters can also
+   --  appear which cause the error message circuit to modify the given
+   --  string as follows:
+
+   --    Insertion character { (Left brace: insert file name from Names table)
+   --      The character { is replaced by the text for the file name specified
+   --      by the File_Name_Type value stored in Error_Msg_File_1. The name is
+   --      always enclosed in quotes. A second { may appear in a single message
+   --      in which case it is similarly replaced by the name which is
+   --      specified by the File_Name_Type value stored in Error_Msg_File_2.
+
+   --    Insertion character $ (Dollar: insert unit name from Names table)
+   --      The character & is replaced by the text for the unit name specified
+   --      by the Name_Id value stored in Error_Msg_Unit_1. The name is always
+   --      enclosed in quotes. A second $ may appear in a single message in
+   --      which case it is similarly replaced by the name which is specified
+   --      by the Name_Id value stored in Error_Msg_Unit_2.
+
+   --    Insertion character # (Pound: insert non-negative number in decimal)
+   --      The character # is replaced by the contents of Error_Msg_Nat_1
+   --      converted into an unsigned decimal string. A second # may appear
+   --      in a single message, in which case it is similarly replaced by
+   --      the value stored in Error_Msg_Nat_2.
+
+   --    Insertion character ? (Question mark: warning message)
+   --      The character ?, which must be the first character in the message
+   --      string, signals a warning message instead of an error message.
+
+   -----------------------------------------------------
+   -- Global Values Used for Error Message Insertions --
+   -----------------------------------------------------
+
+   --  The following global variables are essentially additional parameters
+   --  passed to the error message routine for insertion sequences described
+   --  above. The reason these are passed globally is that the insertion
+   --  mechanism is essentially an untyped one in which the appropriate
+   --  variables are set depending on the specific insertion characters used.
+
+   Error_Msg_Name_1 : Name_Id;
+   --  Name_Id value for % insertion characters in message
+
+   Error_Msg_File_1 : File_Name_Type;
+   Error_Msg_File_2 : File_Name_Type;
+   --  Name_Id values for { insertion characters in message
+
+   Error_Msg_Unit_1 : Unit_Name_Type;
+   Error_Msg_Unit_2 : Unit_Name_Type;
+   --  Name_Id values for $ insertion characters in message
+
+   Error_Msg_Nat_1 : Nat;
+   Error_Msg_Nat_2 : Nat;
+   --  Integer values for # insertion characters in message
+
+   ------------------------------
+   -- Error Output Subprograms --
+   ------------------------------
+
+   procedure Error_Msg (Msg : String);
+   --  Output specified error message to standard error or standard output
+   --  as governed by the brief and verbose switches, and update error
+   --  counts appropriately
+
+   procedure Error_Msg_Info (Msg : String);
+   --  Output information line. Indentical in effect to Error_Msg, except
+   --  that the prefix is info: instead of error: and the error count is
+   --  not incremented. The prefix may be suppressed by setting the global
+   --  variable Info_Prefix_Suppress to True.
+
+   procedure Error_Msg_Output (Msg : String; Info : Boolean);
+   --  Output given message, with insertions, to current message output file.
+   --  The second argument is True for an info message, false for a normal
+   --  warning or error message. Normally this is not called directly, but
+   --  rather only by Error_Msg or Error_Msg_Info. It is called directly
+   --  when the caller must control whether the output goes to stderr or
+   --  stdout (Error_Msg_Output always goes to the current output file).
+
+   procedure Finalize_Binderr;
+   --  Finalize error output for one file
+
+   procedure Initialize_Binderr;
+   --  Initialize error output for one file
+
+end Binderr;