64 lines
3.6 KiB
Ada
64 lines
3.6 KiB
Ada
------------------------------------------------------------------------------
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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) 1992-2012, 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 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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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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