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-------------------------------------------------------------------------------
--- --
--- GNAT LIBRARY COMPONENTS --
--- --
--- G N A T . M O S T _ R E C E N T _ E X C E P T I O N --
--- --
--- S p e c --
--- --
--- Copyright (C) 2000-2008, AdaCore --
--- --
--- 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- --
--- 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. --
--- --
--- 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. --
--- --
--- GNAT was originally developed by the GNAT team at New York University. --
--- Extensive contributions were provided by Ada Core Technologies Inc. --
--- --
-------------------------------------------------------------------------------
-
--- This package provides routines for accessing the most recently raised
--- exception. This may be useful for certain logging activities. It may
--- also be useful for mimicking implementation dependent capabilities in
--- Ada 83 compilers, but see also GNAT.Current_Exceptions for this usage.
-
-with Ada.Exceptions;
-package GNAT.Most_Recent_Exception is
-
- -----------------
- -- Subprograms --
- -----------------
-
- function Occurrence
- return Ada.Exceptions.Exception_Occurrence;
- -- Returns the Exception_Occurrence for the most recently raised exception
- -- in the current task. If no exception has been raised in the current task
- -- prior to the call, returns Null_Occurrence.
-
- function Occurrence_Access
- return Ada.Exceptions.Exception_Occurrence_Access;
- -- Similar to the above, but returns an access to the occurrence value.
- -- This value is in a task specific location, and may be validly accessed
- -- as long as no further exception is raised in the calling task.
-
- -- Note: unlike the routines in GNAT.Current_Exception, these functions
- -- access the most recently raised exception, regardless of where they
- -- are called. Consider the following example:
-
- -- exception
- -- when Constraint_Error =>
- -- begin
- -- ...
- -- exception
- -- when Tasking_Error => ...
- -- end;
- --
- -- -- Assuming a Tasking_Error was raised in the inner block,
- -- -- a call to GNAT.Most_Recent_Exception.Occurrence will
- -- -- return information about this Tasking_Error exception,
- -- -- not about the Constraint_Error exception being handled
- -- -- by the current handler code.
-
-end GNAT.Most_Recent_Exception;