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, 87 insertions, 0 deletions

diff --git a/gcc/ada/g-crc32.adb b/gcc/ada/g-crc32.adb
new file mode 100644
index 000000000..49c9734ce
--- /dev/null
+++ b/gcc/ada/g-crc32.adb
@@ -0,0 +1,87 @@
+------------------------------------------------------------------------------
+--                                                                          --
+--                         GNAT LIBRARY COMPONENTS                          --
+--                                                                          --
+--                           G N A T . C R C 3 2                            --
+--                                                                          --
+--                                 B o d y                                  --
+--                                                                          --
+--                     Copyright (C) 2001-2007, 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.      --
+--                                                                          --
+------------------------------------------------------------------------------
+
+with Ada.Unchecked_Conversion;
+
+package body GNAT.CRC32 is
+
+   ------------
+   -- Update --
+   ------------
+
+   procedure Update (C : in out CRC32; Value : String) is
+   begin
+      for K in Value'Range loop
+         Update (C, Value (K));
+      end loop;
+   end Update;
+
+   procedure Update (C : in out CRC32; Value : Ada.Streams.Stream_Element) is
+      function To_Char is new Ada.Unchecked_Conversion
+        (Ada.Streams.Stream_Element, Character);
+      V : constant Character := To_Char (Value);
+   begin
+      Update (C, V);
+   end Update;
+
+   procedure Update
+     (C     : in out CRC32;
+      Value : Ada.Streams.Stream_Element_Array)
+   is
+   begin
+      for K in Value'Range loop
+         Update (C, Value (K));
+      end loop;
+   end Update;
+
+   -----------------
+   -- Wide_Update --
+   -----------------
+
+   procedure Wide_Update (C : in out CRC32; Value : Wide_Character) is
+      subtype S2 is String (1 .. 2);
+      function To_S2 is new Ada.Unchecked_Conversion (Wide_Character, S2);
+      VS : constant S2 := To_S2 (Value);
+   begin
+      Update (C, VS (1));
+      Update (C, VS (2));
+   end Wide_Update;
+
+   procedure Wide_Update (C : in out CRC32; Value : Wide_String) is
+   begin
+      for K in Value'Range loop
+         Wide_Update (C, Value (K));
+      end loop;
+   end Wide_Update;
+
+end GNAT.CRC32;