1------------------------------------------------------------------------------
2--                                                                          --
3--                         GNAT COMPILER COMPONENTS                         --
4--                                                                          --
5-- 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  --
6--                                                                          --
7--                                 S p e c                                  --
8--                                                                          --
9--          Copyright (C) 1992-2012, Free Software Foundation, Inc.         --
10--                                                                          --
11-- This specification is derived from the Ada Reference Manual for use with --
12-- GNAT. The copyright notice above, and the license provisions that follow --
13-- apply solely to the  contents of the part following the private keyword. --
14--                                                                          --
15-- GNAT is free software;  you can  redistribute it  and/or modify it under --
16-- terms of the  GNU General Public License as published  by the Free Soft- --
17-- ware  Foundation;  either version 3,  or (at your option) any later ver- --
18-- sion.  GNAT is distributed in the hope that it will be useful, but WITH- --
19-- OUT ANY WARRANTY;  without even the  implied warranty of MERCHANTABILITY --
20-- or FITNESS FOR A PARTICULAR PURPOSE.                                     --
21--                                                                          --
22-- As a special exception under Section 7 of GPL version 3, you are granted --
23-- additional permissions described in the GCC Runtime Library Exception,   --
24-- version 3.1, as published by the Free Software Foundation.               --
25--                                                                          --
26-- You should have received a copy of the GNU General Public License and    --
27-- a copy of the GCC Runtime Library Exception along with this program;     --
28-- see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see    --
29-- <http://www.gnu.org/licenses/>.                                          --
30--                                                                          --
31-- GNAT was originally developed  by the GNAT team at  New York University. --
32-- Extensive contributions were provided by Ada Core Technologies Inc.      --
33--                                                                          --
34------------------------------------------------------------------------------
35
36generic
37   type Object (<>) is limited private;
38
39package System.Address_To_Access_Conversions is
40   pragma Preelaborate;
41
42   pragma Compile_Time_Warning
43     (Object'Unconstrained_Array,
44      "Object is unconstrained array type" & ASCII.LF &
45      "To_Pointer results may not have bounds");
46
47   type Object_Pointer is access all Object;
48   for Object_Pointer'Size use Standard'Address_Size;
49
50   pragma No_Strict_Aliasing (Object_Pointer);
51   --  Strictly speaking, this routine should not be used to generate pointers
52   --  to other than proper values of the proper type, but in practice, this
53   --  is done all the time. This pragma stops the compiler from doing some
54   --  optimizations that may cause unexpected results based on the assumption
55   --  of no strict aliasing.
56
57   function To_Pointer (Value : Address)        return Object_Pointer;
58   function To_Address (Value : Object_Pointer) return Address;
59
60   pragma Import (Intrinsic, To_Pointer);
61   pragma Import (Intrinsic, To_Address);
62
63end System.Address_To_Access_Conversions;
64