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, 81 insertions, 0 deletions

diff --git a/gcc/ada/a-rttiev.ads b/gcc/ada/a-rttiev.ads
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+------------------------------------------------------------------------------
+--                                                                          --
+--                         GNAT RUN-TIME COMPONENTS                         --
+--                                                                          --
+--          A D A . R E A L _ T I M E . T I M I N G _ E V E N T S           --
+--                                                                          --
+--                                 S p e c                                  --
+--                                                                          --
+--           Copyright (C) 2005-2009, Free Software Foundation, Inc.        --
+--                                                                          --
+-- This specification is derived from the Ada Reference Manual for use with --
+-- GNAT. The copyright notice above, and the license provisions that follow --
+-- apply solely to the  contents of the part following the private keyword. --
+--                                                                          --
+-- 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.                                     --
+--                                                                          --
+-- As a special exception under Section 7 of GPL version 3, you are granted --
+-- additional permissions described in the GCC Runtime Library Exception,   --
+-- version 3.1, as published by the Free Software Foundation.               --
+--                                                                          --
+-- You should have received a copy of the GNU General Public License and    --
+-- a copy of the GCC Runtime Library Exception along with this program;     --
+-- see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see    --
+-- <http://www.gnu.org/licenses/>.                                          --
+--                                                                          --
+-- GNAT was originally developed  by the GNAT team at  New York University. --
+-- Extensive contributions were provided by Ada Core Technologies Inc.      --
+--                                                                          --
+------------------------------------------------------------------------------
+
+with Ada.Finalization;
+
+package Ada.Real_Time.Timing_Events is
+
+   type Timing_Event is tagged limited private;
+
+   type Timing_Event_Handler
+     is access protected procedure (Event : in out Timing_Event);
+
+   procedure Set_Handler
+     (Event   : in out Timing_Event;
+      At_Time : Time;
+      Handler : Timing_Event_Handler);
+
+   procedure Set_Handler
+     (Event   : in out Timing_Event;
+      In_Time : Time_Span;
+      Handler : Timing_Event_Handler);
+
+   function Current_Handler
+     (Event : Timing_Event) return Timing_Event_Handler;
+
+   procedure Cancel_Handler
+     (Event     : in out Timing_Event;
+      Cancelled : out Boolean);
+
+   function Time_Of_Event (Event : Timing_Event) return Time;
+
+private
+
+   type Timing_Event is new Ada.Finalization.Limited_Controlled with record
+      Timeout : Time := Time_First;
+      --  The time at which the user's handler should be invoked when the
+      --  event is "set" (i.e., when Handler is not null).
+
+      Handler : Timing_Event_Handler;
+      --  An access value designating the protected procedure to be invoked
+      --  at the Timeout time in the future.  When this value is null the event
+      --  is said to be "cleared" and no timeout is processed.
+   end record;
+
+   overriding procedure Finalize (This : in out Timing_Event);
+   --  Finalization procedure is required to satisfy (RM D.15 (19/2)), which
+   --  says that the object must be cleared on finalization.
+
+end Ada.Real_Time.Timing_Events;