--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gcc/ada/libgnat/a-ztcoio.adb	Fri Oct 27 22:46:09 2017 +0900
@@ -0,0 +1,159 @@
+------------------------------------------------------------------------------
+--                                                                          --
+--                         GNAT RUN-TIME COMPONENTS                         --
+--                                                                          --
+--      A D A . W I D E _ W I D E _ T E X T _ IO . C O M P L E X _ I O      --
+--                                                                          --
+--                                 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.      --
+--                                                                          --
+------------------------------------------------------------------------------
+
+with Ada.Wide_Wide_Text_IO.Complex_Aux;
+
+with System.WCh_Con; use System.WCh_Con;
+with System.WCh_WtS; use System.WCh_WtS;
+
+with Ada.Unchecked_Conversion;
+
+package body Ada.Wide_Wide_Text_IO.Complex_IO is
+
+   package Aux renames Ada.Wide_Wide_Text_IO.Complex_Aux;
+
+   subtype LLF is Long_Long_Float;
+   --  Type used for calls to routines in Aux
+
+   function TFT is new
+     Ada.Unchecked_Conversion (File_Type, Ada.Wide_Wide_Text_IO.File_Type);
+   --  This unchecked conversion is to get around a visibility bug in
+   --  GNAT version 2.04w. It should be possible to simply use the
+   --  subtype declared above and do normal checked conversions.
+
+   ---------
+   -- Get --
+   ---------
+
+   procedure Get
+     (File  : File_Type;
+      Item  : out Complex;
+      Width : Field := 0)
+   is
+      Real_Item : Real'Base;
+      Imag_Item : Real'Base;
+
+   begin
+      Aux.Get (TFT (File), LLF (Real_Item), LLF (Imag_Item), Width);
+      Item := (Real_Item, Imag_Item);
+
+   exception
+      when Constraint_Error => raise Data_Error;
+   end Get;
+
+   ---------
+   -- Get --
+   ---------
+
+   procedure Get
+     (Item  : out Complex;
+      Width : Field := 0)
+   is
+   begin
+      Get (Current_Input, Item, Width);
+   end Get;
+
+   ---------
+   -- Get --
+   ---------
+
+   procedure Get
+     (From : Wide_Wide_String;
+      Item : out Complex;
+      Last : out Positive)
+   is
+      Real_Item : Real'Base;
+      Imag_Item : Real'Base;
+
+      S : constant String := Wide_Wide_String_To_String (From, WCEM_Upper);
+      --  String on which we do the actual conversion. Note that the method
+      --  used for wide character encoding is irrelevant, since if there is
+      --  a character outside the Standard.Character range then the call to
+      --  Aux.Gets will raise Data_Error in any case.
+
+   begin
+      Aux.Gets (S, LLF (Real_Item), LLF (Imag_Item), Last);
+      Item := (Real_Item, Imag_Item);
+
+   exception
+      when Data_Error => raise Constraint_Error;
+   end Get;
+
+   ---------
+   -- Put --
+   ---------
+
+   procedure Put
+     (File : File_Type;
+      Item : Complex;
+      Fore : Field := Default_Fore;
+      Aft  : Field := Default_Aft;
+      Exp  : Field := Default_Exp)
+   is
+   begin
+      Aux.Put (TFT (File), LLF (Re (Item)), LLF (Im (Item)), Fore, Aft, Exp);
+   end Put;
+
+   ---------
+   -- Put --
+   ---------
+
+   procedure Put
+     (Item : Complex;
+      Fore : Field := Default_Fore;
+      Aft  : Field := Default_Aft;
+      Exp  : Field := Default_Exp)
+   is
+   begin
+      Put (Current_Output, Item, Fore, Aft, Exp);
+   end Put;
+
+   ---------
+   -- Put --
+   ---------
+
+   procedure Put
+     (To   : out Wide_Wide_String;
+      Item : Complex;
+      Aft  : Field := Default_Aft;
+      Exp  : Field := Default_Exp)
+   is
+      S : String (To'First .. To'Last);
+
+   begin
+      Aux.Puts (S, LLF (Re (Item)), LLF (Im (Item)), Aft, Exp);
+
+      for J in S'Range loop
+         To (J) := Wide_Wide_Character'Val (Character'Pos (S (J)));
+      end loop;
+   end Put;
+
+end Ada.Wide_Wide_Text_IO.Complex_IO;