| ------------------------------------------------------------------------------ |
| -- -- |
| -- 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) 1992-2005, 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, 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. -- |
| -- -- |
| ------------------------------------------------------------------------------ |
| |
| 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; |
