--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gcc/ada/libgnat/g-cppexc.ads	Fri Oct 27 22:46:09 2017 +0900
@@ -0,0 +1,48 @@
+------------------------------------------------------------------------------
+--                                                                          --
+--                         GNAT RUN-TIME COMPONENTS                         --
+--                                                                          --
+--                  G N A T . C P P _ E X C E P T I O N S                   --
+--                                                                          --
+--                                 S p e c                                  --
+--                                                                          --
+--                        Copyright (C) 2013-2017, AdaCore                  --
+--                                                                          --
+-- 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 provides an interface for raising and handling C++ exceptions
+
+with Ada.Exceptions; use Ada.Exceptions;
+
+package GNAT.CPP_Exceptions is
+   generic
+      type T is private;
+   procedure Raise_Cpp_Exception (Id : Exception_Id; Value : T);
+   --  Raise a C++ exception identified by Id. Associate Value with this
+   --  occurrence. Id must refer to an exception that has the Cpp convention.
+
+   generic
+      type T is private;
+   function Get_Object (X : Exception_Occurrence) return T;
+   --  Extract the object associated with X. The exception of the occurrence
+   --  X must have a Cpp Convention.
+end GNAT.CPP_Exceptions;