67 lines
3.7 KiB
Ada
67 lines
3.7 KiB
Ada
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------------------------------------------------------------------------------
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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 . E X C E P T 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) 2006-2014, Free Software Foundation, Inc. --
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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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pragma Compiler_Unit_Warning;
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package System.Exceptions is
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pragma Preelaborate;
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-- To let Ada.Exceptions "with" us and let us "with" Standard_Library
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ZCX_By_Default : constant Boolean;
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-- Visible copy to allow Ada.Exceptions to know the exception model
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private
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type Require_Body;
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-- Dummy Taft-amendment type to make it legal (and required) to provide
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-- a body for this package.
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--
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-- We do this because this unit used to have a body in earlier versions
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-- of GNAT, and it causes various bootstrap path problems etc if we remove
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-- a body, since we may pick up old unwanted bodies.
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--
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-- Note: we use this standard Ada method of requiring a body rather
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-- than the cleaner pragma No_Body because System.Exceptions is a compiler
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-- unit, and older bootstrap compilers do not support pragma No_Body. This
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-- type can be removed, and s-except.adb can be replaced by a source
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-- containing just that pragma, when we decide to move to a 2008 compiler
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-- as the minimal bootstrap compiler version. ???
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ZCX_By_Default : constant Boolean := System.ZCX_By_Default;
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Foreign_Exception : exception;
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pragma Unreferenced (Foreign_Exception);
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-- This hidden exception is used to represent non-Ada exception to
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-- Ada handlers. It is in fact referenced by its linking name.
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end System.Exceptions;
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