--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gcc/ada/libgnat/a-tiboio.adb	Fri Oct 27 22:46:09 2017 +0900
@@ -0,0 +1,179 @@
+------------------------------------------------------------------------------
+--                                                                          --
+--                         GNAT RUN-TIME COMPONENTS                         --
+--                                                                          --
+--               A D A . T E X T _ I O . B O U N D E D _ I O                --
+--                                                                          --
+--                                 B o d y                                  --
+--                                                                          --
+--          Copyright (C) 1997-2017, 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.      --
+--                                                                          --
+------------------------------------------------------------------------------
+
+with Ada.Text_IO; use Ada.Text_IO;
+with Ada.Unchecked_Deallocation;
+
+package body Ada.Text_IO.Bounded_IO is
+
+   type String_Access is access all String;
+
+   procedure Free (SA : in out String_Access);
+   --  Perform an unchecked deallocation of a non-null string
+
+   ----------
+   -- Free --
+   ----------
+
+   procedure Free (SA : in out String_Access) is
+      Null_String : constant String := "";
+
+      procedure Deallocate is
+        new Ada.Unchecked_Deallocation (String, String_Access);
+
+   begin
+      --  Do not try to free statically allocated null string
+
+      if SA.all /= Null_String then
+         Deallocate (SA);
+      end if;
+   end Free;
+
+   --------------
+   -- Get_Line --
+   --------------
+
+   function Get_Line return Bounded.Bounded_String is
+   begin
+      return Bounded.To_Bounded_String (Get_Line);
+   end Get_Line;
+
+   --------------
+   -- Get_Line --
+   --------------
+
+   function Get_Line
+     (File : File_Type) return Bounded.Bounded_String
+   is
+   begin
+      return Bounded.To_Bounded_String (Get_Line (File));
+   end Get_Line;
+
+   --------------
+   -- Get_Line --
+   --------------
+
+   procedure Get_Line
+     (Item : out Bounded.Bounded_String)
+   is
+      Buffer : String (1 .. 1000);
+      Last   : Natural;
+      Str1   : String_Access;
+      Str2   : String_Access;
+
+   begin
+      Get_Line (Buffer, Last);
+      Str1 := new String'(Buffer (1 .. Last));
+
+      while Last = Buffer'Last loop
+         Get_Line (Buffer, Last);
+         Str2 := new String'(Str1.all & Buffer (1 .. Last));
+         Free (Str1);
+         Str1 := Str2;
+      end loop;
+
+      Item := Bounded.To_Bounded_String (Str1.all);
+   end Get_Line;
+
+   --------------
+   -- Get_Line --
+   --------------
+
+   procedure Get_Line
+     (File : File_Type;
+      Item : out Bounded.Bounded_String)
+   is
+      Buffer : String (1 .. 1000);
+      Last   : Natural;
+      Str1   : String_Access;
+      Str2   : String_Access;
+
+   begin
+      Get_Line (File, Buffer, Last);
+      Str1 := new String'(Buffer (1 .. Last));
+
+      while Last = Buffer'Last loop
+         Get_Line (File, Buffer, Last);
+         Str2 := new String'(Str1.all & Buffer (1 .. Last));
+         Free (Str1);
+         Str1 := Str2;
+      end loop;
+
+      Item := Bounded.To_Bounded_String (Str1.all);
+   end Get_Line;
+
+   ---------
+   -- Put --
+   ---------
+
+   procedure Put
+     (Item : Bounded.Bounded_String)
+   is
+   begin
+      Put (Bounded.To_String (Item));
+   end Put;
+
+   ---------
+   -- Put --
+   ---------
+
+   procedure Put
+     (File : File_Type;
+      Item : Bounded.Bounded_String)
+   is
+   begin
+      Put (File, Bounded.To_String (Item));
+   end Put;
+
+   --------------
+   -- Put_Line --
+   --------------
+
+   procedure Put_Line
+     (Item : Bounded.Bounded_String)
+   is
+   begin
+      Put_Line (Bounded.To_String (Item));
+   end Put_Line;
+
+   --------------
+   -- Put_Line --
+   --------------
+
+   procedure Put_Line
+     (File : File_Type;
+      Item : Bounded.Bounded_String)
+   is
+   begin
+      Put_Line (File, Bounded.To_String (Item));
+   end Put_Line;
+
+end Ada.Text_IO.Bounded_IO;