--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gcc/ada/libgnat/g-utf_32.ads	Fri Oct 27 22:46:09 2017 +0900
@@ -0,0 +1,47 @@
+------------------------------------------------------------------------------
+--                                                                          --
+--                         GNAT RUN-TIME COMPONENTS                         --
+--                                                                          --
+--                          G N A T . U T F _ 3 2                           --
+--                                                                          --
+--                                 S p e c                                  --
+--                                                                          --
+--          Copyright (C) 2005-2017, 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.      --
+--                                                                          --
+------------------------------------------------------------------------------
+
+--  This package is an internal package that provides basic character
+--  classification capabilities needed by the compiler for handling full
+--  32-bit wide wide characters. We avoid the use of the actual type
+--  Wide_Wide_Character, since we want to use these routines in the compiler
+--  itself, and we want to be able to compile the compiler with old versions
+--  of GNAT that did not implement Wide_Wide_Character.
+
+--  This package is available directly for use in application programs,
+--  and also serves as the basis for Ada.Wide_Wide_Characters.Unicode and
+--  Ada.Wide_Characters.Unicode, which can also be used directly.
+
+--  See file s-utf_32.ads for full documentation of the interface
+
+with System.UTF_32;
+
+package GNAT.UTF_32 renames System.UTF_32;