--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gcc/ada/libgnat/s-finroo.adb	Fri Oct 27 22:46:09 2017 +0900
@@ -0,0 +1,63 @@
+------------------------------------------------------------------------------
+--                                                                          --
+--                         GNAT COMPILER COMPONENTS                         --
+--                                                                          --
+--                S Y S T E M . F I N A L I Z A T I O N _ R O O T           --
+--                                                                          --
+--                                 B o d y                                  --
+--                                                                          --
+--           Copyright (C) 1992-2017, 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.                                     --
+--                                                                          --
+-- 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.      --
+--                                                                          --
+------------------------------------------------------------------------------
+
+package body System.Finalization_Root is
+
+   --  It should not be possible to call any of these subprograms
+
+   ------------
+   -- Adjust --
+   ------------
+
+   procedure Adjust (Object : in out Root_Controlled) is
+   begin
+      raise Program_Error;
+   end Adjust;
+
+   --------------
+   -- Finalize --
+   --------------
+
+   procedure Finalize (Object : in out Root_Controlled) is
+   begin
+      raise Program_Error;
+   end Finalize;
+
+   ----------------
+   -- Initialize --
+   ----------------
+
+   procedure Initialize (Object : in out Root_Controlled) is
+   begin
+      raise Program_Error;
+   end Initialize;
+
+end System.Finalization_Root;