--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gcc/ada/libgnat/text_io.ads	Fri Oct 27 22:46:09 2017 +0900
@@ -0,0 +1,24 @@
+------------------------------------------------------------------------------
+--                                                                          --
+--                         GNAT RUN-TIME COMPONENTS                         --
+--                                                                          --
+--                              T E X T _ I O                               --
+--                                                                          --
+--                                 S p e c                                  --
+--                                                                          --
+-- This specification is derived from the Ada Reference Manual for use with --
+-- GNAT.  In accordance with the copyright of that document, you can freely --
+-- copy and modify this specification,  provided that if you redistribute a --
+-- modified version,  any changes that you have made are clearly indicated. --
+--                                                                          --
+------------------------------------------------------------------------------
+
+pragma Ada_2012;
+--  Explicit setting of Ada 2012 mode is required here, since we want to with a
+--  child unit (not possible in Ada 83 mode), and Text_IO is not considered to
+--  be an internal unit that is automatically compiled in Ada 2012 mode (since
+--  a user is allowed to redeclare Text_IO).
+
+with Ada.Text_IO;
+
+package Text_IO renames Ada.Text_IO;