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+------------------------------------------------------------------------------
+-- --
+-- GNAT COMPILER COMPONENTS --
+-- --
+-- I N T E R F A C E S . C . P O I N T E R S --
+-- --
+-- S p e c --
+-- --
+-- Copyright (C) 1993-2011, Free Software Foundation, Inc. --
+-- --
+-- This specification is derived from the Ada Reference Manual for use with --
+-- GNAT. The copyright notice above, and the license provisions that follow --
+-- apply solely to the contents of the part following the private keyword. --
+-- --
+-- 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. --
+-- --
+------------------------------------------------------------------------------
+
+with System.Parameters;
+
+generic
+ type Index is (<>);
+ type Element is private;
+ type Element_Array is array (Index range <>) of aliased Element;
+ Default_Terminator : Element;
+
+package Interfaces.C.Pointers is
+ pragma Preelaborate;
+
+ type Pointer is access all Element;
+ for Pointer'Size use System.Parameters.ptr_bits;
+
+ pragma No_Strict_Aliasing (Pointer);
+ -- We turn off any strict aliasing assumptions for the pointer type,
+ -- since it is possible to create "improperly" aliased values.
+
+ function Value
+ (Ref : Pointer;
+ Terminator : Element := Default_Terminator) return Element_Array;
+
+ function Value
+ (Ref : Pointer;
+ Length : ptrdiff_t) return Element_Array;
+
+ Pointer_Error : exception;
+
+ --------------------------------
+ -- C-style Pointer Arithmetic --
+ --------------------------------
+
+ function "+" (Left : Pointer; Right : ptrdiff_t) return Pointer;
+ function "+" (Left : ptrdiff_t; Right : Pointer) return Pointer;
+ function "-" (Left : Pointer; Right : ptrdiff_t) return Pointer;
+ function "-" (Left : Pointer; Right : Pointer) return ptrdiff_t;
+
+ procedure Increment (Ref : in out Pointer);
+ procedure Decrement (Ref : in out Pointer);
+
+ pragma Convention (Intrinsic, "+");
+ pragma Convention (Intrinsic, "-");
+ pragma Convention (Intrinsic, Increment);
+ pragma Convention (Intrinsic, Decrement);
+
+ function Virtual_Length
+ (Ref : Pointer;
+ Terminator : Element := Default_Terminator) return ptrdiff_t;
+
+ procedure Copy_Terminated_Array
+ (Source : Pointer;
+ Target : Pointer;
+ Limit : ptrdiff_t := ptrdiff_t'Last;
+ Terminator : Element := Default_Terminator);
+
+ procedure Copy_Array
+ (Source : Pointer;
+ Target : Pointer;
+ Length : ptrdiff_t);
+
+private
+ pragma Inline ("+");
+ pragma Inline ("-");
+ pragma Inline (Decrement);
+ pragma Inline (Increment);
+
+end Interfaces.C.Pointers;