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-------------------------------------------------------------------------------
--- --
--- GNAT COMPILER COMPONENTS --
--- --
--- A D A . E X C E P T I O N S . C A L L _ C H A I N --
--- --
--- B o d y --
--- --
--- Copyright (C) 1992-2009, 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 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. --
--- --
-------------------------------------------------------------------------------
-
-pragma Warnings (Off);
--- Allow withing of non-Preelaborated units in Ada 2005 mode where this
--- package will be categorized as Preelaborate. See AI-362 for details.
--- It is safe in the context of the run-time to violate the rules!
-
-with System.Traceback;
-
-pragma Warnings (On);
-
-separate (Ada.Exceptions)
-procedure Call_Chain (Excep : EOA) is
-
- Exception_Tracebacks : Integer;
- pragma Import (C, Exception_Tracebacks, "__gl_exception_tracebacks");
- -- Boolean indicating whether tracebacks should be stored in exception
- -- occurrences.
-
-begin
- if Exception_Tracebacks /= 0 and Excep.Num_Tracebacks = 0 then
-
- -- If Exception_Tracebacks = 0 then the program was not
- -- compiled for storing tracebacks in exception occurrences
- -- (-bargs -E switch) so that we do not generate them.
- --
- -- If Excep.Num_Tracebacks /= 0 then this is a reraise, no need
- -- to store a new (wrong) chain.
-
- -- We ask System.Traceback.Call_Chain to skip 3 frames to ensure that
- -- itself, ourselves and our caller are not part of the result. Our
- -- caller is always an exception propagation actor that we don't want
- -- to see, and it may be part of a separate subunit which pulls it
- -- outside the AAA/ZZZ range.
-
- System.Traceback.Call_Chain
- (Traceback => Excep.Tracebacks'Address,
- Max_Len => Max_Tracebacks,
- Len => Excep.Num_Tracebacks,
- Exclude_Min => Code_Address_For_AAA,
- Exclude_Max => Code_Address_For_ZZZ,
- Skip_Frames => 3);
- end if;
-
-end Call_Chain;