-- --
-- S p e c --
-- --
--- Copyright (C) 1992-2008, Free Software Foundation, Inc. --
+-- Copyright (C) 1992-2010, Free Software Foundation, Inc. --
-- --
-- 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 2, or (at your option) any later ver- --
+-- 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. See the GNU General Public License --
--- for more details. You should have received a copy of the GNU General --
--- Public License distributed with GNAT; see file COPYING. If not, write --
--- to the Free Software Foundation, 51 Franklin Street, Fifth Floor, --
--- Boston, MA 02110-1301, USA. --
+-- or FITNESS FOR A PARTICULAR PURPOSE. --
-- --
--- As a special exception, if other files instantiate generics from this --
--- unit, or you link this unit with other files to produce an executable, --
--- this unit does not by itself cause the resulting executable to be --
--- covered by the GNU General Public License. This exception does not --
--- however invalidate any other reasons why the executable file might be --
--- covered by the GNU Public License. --
+-- 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. --
-- are required to be part of every Ada program. A special mechanism is
-- required to ensure that these are loaded, since it may be the case in
-- some programs that the only references to these required packages are
--- from C code or from code generated directly by Gigi, an in both cases
+-- from C code or from code generated directly by Gigi, and in both cases
-- the binder is not aware of such references.
-- System.Standard_Library also includes data that must be present in every
--- program, in particular the definitions of all the standard and also some
+-- program, in particular data for all the standard exceptions, and also some
-- subprograms that must be present in every program.
-- The binder unconditionally includes s-stalib.ali, which ensures that this
-- package and the packages it references are included in all Ada programs,
-- together with the included data.
-pragma Warnings (Off);
pragma Compiler_Unit;
-pragma Warnings (On);
pragma Polling (Off);
-- We must turn polling off for this unit, because otherwise we get
-- elaboration circularities with Ada.Exceptions if polling is on.
-with System;
with Ada.Unchecked_Conversion;
package System.Standard_Library is
pragma Preelaborate_05;
pragma Warnings (On);
- type Big_String_Ptr is access all String (Positive);
+ subtype Big_String is String (1 .. Positive'Last);
+ pragma Suppress_Initialization (Big_String);
+ -- Type used to obtain string access to given address. Initialization is
+ -- suppressed, since we never want to have variables of this type, and
+ -- we never want to attempt initialiazation of virtual variables of this
+ -- type (e.g. when pragma Normalize_Scalars is used).
+
+ type Big_String_Ptr is access all Big_String;
for Big_String_Ptr'Storage_Size use 0;
- -- A non-fat pointer type for null terminated strings
+ -- We use this access type to pass a pointer to an area of storage to be
+ -- accessed as a string. Of course when this pointer is used, it is the
+ -- responsibility of the accessor to ensure proper bounds. The storage
+ -- size clause ensures we do not allocate variables of this type.
function To_Ptr is
new Ada.Unchecked_Conversion (System.Address, Big_String_Ptr);
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