------------------------------------------------------------------------------ -- -- -- GNAT COMPILER COMPONENTS -- -- -- -- ADA.EXCEPTIONS.CALL_CHAIN -- -- -- -- B o d y -- -- -- -- Copyright (C) 1992-2003 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- -- -- 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, 59 Temple Place - Suite 330, Boston, -- -- MA 02111-1307, 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. -- -- -- ------------------------------------------------------------------------------ with System.Traceback; 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;