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diff --git a/gcc-4.9/gcc/ada/mdll-fil.adb b/gcc-4.9/gcc/ada/mdll-fil.adb
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+------------------------------------------------------------------------------
+--                                                                          --
+--                         GNAT COMPILER COMPONENTS                         --
+--                                                                          --
+--                            M D L L . F I L E S                           --
+--                                                                          --
+--                                 B o d y                                  --
+--                                                                          --
+--          Copyright (C) 1992-2007, 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.      --
+--                                                                          --
+------------------------------------------------------------------------------
+
+--  Simple services used by GNATDLL to deal with Filename extension
+
+with Ada.Strings.Fixed;
+
+package body MDLL.Fil is
+
+   use Ada;
+
+   -------------
+   -- Get_Ext --
+   -------------
+
+   function Get_Ext (Filename : String) return String is
+      use Strings.Fixed;
+      I : constant Natural := Index (Filename, ".", Strings.Backward);
+   begin
+      if I = 0 then
+         return "";
+      else
+         return Filename (I .. Filename'Last);
+      end if;
+   end Get_Ext;
+
+   ------------
+   -- Is_Ali --
+   ------------
+
+   function Is_Ali (Filename : String) return Boolean is
+   begin
+      return Get_Ext (Filename) = ".ali";
+   end Is_Ali;
+
+   ------------
+   -- Is_Obj --
+   ------------
+
+   function Is_Obj (Filename : String) return Boolean is
+      Ext : constant String := Get_Ext (Filename);
+   begin
+      return Ext = ".o" or else Ext = ".obj";
+   end Is_Obj;
+
+   ------------
+   -- Ext_To --
+   ------------
+
+   function Ext_To
+     (Filename : String;
+      New_Ext  : String := No_Ext)
+      return     String
+   is
+      use Strings.Fixed;
+      I : constant Natural := Index (Filename, ".", Strings.Backward);
+   begin
+      if I = 0 then
+         return Filename;
+
+      else
+         if New_Ext = "" then
+            return Filename (Filename'First .. I - 1);
+         else
+            return Filename (Filename'First .. I - 1) & '.' & New_Ext;
+         end if;
+      end if;
+   end Ext_To;
+
+end MDLL.Fil;