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
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if you have obtained the source via the command 'git clone',
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1 files changed, 61 insertions, 0 deletions

diff --git a/gcc/ada/a-extiti.ads b/gcc/ada/a-extiti.ads
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+------------------------------------------------------------------------------
+--                                                                          --
+--                         GNAT RUN-TIME COMPONENTS                         --
+--                                                                          --
+--             A D A . E X E C U T I O N _ T I M E . T I M E R S            --
+--                                                                          --
+--                                 S p e c                                  --
+--                                                                          --
+-- This specification is derived from the Ada Reference Manual for use with --
+-- GNAT.  In accordance with the copyright of that document, you can freely --
+-- copy and modify this specification,  provided that if you redistribute a --
+-- modified version,  any changes that you have made are clearly indicated. --
+--                                                                          --
+------------------------------------------------------------------------------
+
+--  This unit is not implemented in typical GNAT implementations that lie on
+--  top of operating systems, because it is infeasible to implement in such
+--  environments.
+
+--  If a target environment provides appropriate support for this package,
+--  then the Unimplemented_Unit pragma should be removed from this spec and
+--  an appropriate body provided.
+
+with System;
+
+package Ada.Execution_Time.Timers is
+   pragma Preelaborate;
+
+   pragma Unimplemented_Unit;
+
+   type Timer (T : not null access constant Ada.Task_Identification.Task_Id) is
+      tagged limited private;
+
+   type Timer_Handler is access protected procedure (TM : in out Timer);
+
+   Min_Handler_Ceiling : constant System.Any_Priority := System.Priority'Last;
+
+   procedure Set_Handler
+     (TM      : in out Timer;
+      In_Time : Ada.Real_Time.Time_Span;
+      Handler : Timer_Handler);
+
+   procedure Set_Handler
+     (TM      : in out Timer;
+      At_Time : CPU_Time;
+      Handler : Timer_Handler);
+
+   function Current_Handler (TM : Timer) return Timer_Handler;
+
+   procedure Cancel_Handler
+     (TM        : in out Timer;
+      Cancelled : out Boolean);
+
+   function Time_Remaining (TM : Timer) return Ada.Real_Time.Time_Span;
+
+   Timer_Resource_Error : exception;
+
+private
+   type Timer (T : access Ada.Task_Identification.Task_Id) is
+      tagged limited null record;
+end Ada.Execution_Time.Timers;