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1 706 jeremybenn
------------------------------------------------------------------------------
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--                                                                          --
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--                         GNAT COMPILER COMPONENTS                         --
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--                                                                          --
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-- S Y S T E M . A D D R E S S _ T O _ A C C E S S _ C O N V E R S I O N S  --
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--                                                                          --
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--                                 S p e c                                  --
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--                                                                          --
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--          Copyright (C) 1992-2009, Free Software Foundation, Inc.         --
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--                                                                          --
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-- This specification is derived from the Ada Reference Manual for use with --
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-- GNAT. The copyright notice above, and the license provisions that follow --
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-- apply solely to the  contents of the part following the private keyword. --
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--                                                                          --
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-- GNAT is free software;  you can  redistribute it  and/or modify it under --
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-- terms of the  GNU General Public License as published  by the Free Soft- --
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-- ware  Foundation;  either version 3,  or (at your option) any later ver- --
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-- sion.  GNAT is distributed in the hope that it will be useful, but WITH- --
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-- OUT ANY WARRANTY;  without even the  implied warranty of MERCHANTABILITY --
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-- or FITNESS FOR A PARTICULAR PURPOSE.                                     --
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--                                                                          --
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-- As a special exception under Section 7 of GPL version 3, you are granted --
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-- additional permissions described in the GCC Runtime Library Exception,   --
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-- version 3.1, as published by the Free Software Foundation.               --
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--                                                                          --
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-- You should have received a copy of the GNU General Public License and    --
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-- a copy of the GCC Runtime Library Exception along with this program;     --
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-- see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see    --
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-- <http://www.gnu.org/licenses/>.                                          --
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--                                                                          --
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-- GNAT was originally developed  by the GNAT team at  New York University. --
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-- Extensive contributions were provided by Ada Core Technologies Inc.      --
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--                                                                          --
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------------------------------------------------------------------------------
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generic
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   type Object (<>) is limited private;
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package System.Address_To_Access_Conversions is
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   pragma Preelaborate;
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   pragma Elaborate_Body;
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   --  This pragma Elaborate_Body is there to ensure the requirement of what is
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   --  at the moment a dummy null body. The reason this null body is there is
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   --  that we used to have a real body, and it causes bootstrap problems with
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   --  old compilers if we try to remove the corresponding file.
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   pragma Compile_Time_Warning
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     (Object'Unconstrained_Array,
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      "Object is unconstrained array type" & ASCII.LF &
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      "To_Pointer results may not have bounds");
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   --  Capture constrained status, suppressing warnings, since this is
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   --  an obsolescent feature to use Constrained in this way (RM J.4).
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   pragma Warnings (Off);
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   Xyz : Boolean := Object'Constrained;
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   pragma Warnings (On);
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   type Object_Pointer is access all Object;
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   for Object_Pointer'Size use Standard'Address_Size;
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   pragma No_Strict_Aliasing (Object_Pointer);
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   --  Strictly speaking, this routine should not be used to generate pointers
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   --  to other than proper values of the proper type, but in practice, this
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   --  is done all the time. This pragma stops the compiler from doing some
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   --  optimizations that may cause unexpected results based on the assumption
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   --  of no strict aliasing.
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   function To_Pointer (Value : Address)        return Object_Pointer;
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   function To_Address (Value : Object_Pointer) return Address;
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   pragma Import (Intrinsic, To_Pointer);
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   pragma Import (Intrinsic, To_Address);
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end System.Address_To_Access_Conversions;

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