54 lines
3.2 KiB
Ada
54 lines
3.2 KiB
Ada
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------------------------------------------------------------------------------
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-- --
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-- GNAT RUN-TIME COMPONENTS --
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-- --
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-- A D A . E X C E P T I O N S . I S _ N U L L _ O C C U R R E N C E --
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-- --
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-- B o d y --
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-- --
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-- --
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-- Copyright (C) 2000 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 2, 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. See the GNU General Public License --
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-- for more details. You should have received a copy of the GNU General --
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-- Public License distributed with GNAT; see file COPYING. If not, write --
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-- to the Free Software Foundation, 59 Temple Place - Suite 330, Boston, --
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-- MA 02111-1307, USA. --
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-- --
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-- As a special exception, if other files instantiate generics from this --
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-- unit, or you link this unit with other files to produce an executable, --
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-- this unit does not by itself cause the resulting executable to be --
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-- covered by the GNU General Public License. This exception does not --
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-- however invalidate any other reasons why the executable file might be --
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-- covered by the GNU Public License. --
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-- --
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-- GNAT was originally developed by the GNAT team at New York University. --
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-- It is now maintained by Ada Core Technologies Inc (http://www.gnat.com). --
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-- --
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------------------------------------------------------------------------------
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-- This is a GNAT-specific child function of Ada.Exceptions. It provides
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-- clearly missing functionality for its parent package, and most reasonably
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-- would simply be an added function to that package, but this change cannot
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-- be made in a conforming manner.
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function Ada.Exceptions.Is_Null_Occurrence
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(X : Exception_Occurrence)
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return Boolean
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is
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begin
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-- The null exception is uniquely identified by the fact that the Id
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-- value is null. No other exception occurrence can have a null Id.
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if X.Id = Null_Id then
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return True;
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else
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return False;
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end if;
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end Ada.Exceptions.Is_Null_Occurrence;
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