No getting any trace stack dump of exception occurred in program calls. Pls help.

[NirmalCRIS]

Using OpenVMS 8.3 version Itegrity Server.

I have Server program in C, here we are setting error handler. Now this program calls some FORTRAN programs, here main calling fortran program again set error handler.  

Some Exceptional conditions are occurring in FORTRAN module which results in call transfer to Fortran error handler, here in debug mode I am able to get call trace where exception generated however once call transferred to C error handler I am not getting any call trace from where this exception is generated. Even I have checked it by commenting the error handler establish at FORTRAN end. So, during execution mode I am not at all getting any trace back dump.

To get the trace back dump during execution mode at Fortran end I used following commands but no result.

CMND='SHOW CALLS;GO;EXIT'  --->CALL LIB$SIGNAL(SS$_DEBUG,1,CMND)

CALL LIB$SIGNAL ( %VAL(SS$_ACCVIO) )

CALL SYS$PUTMSG (SIGARGS,0,0,0)

CALL SYS$UNWIND(MECHARGS(5),)

===============================================

I want trace back dump as shown below but nothing getting except out generated msg

%SYSTEM-F-SUBRNG1, subscript 1 range error, PC=0000000000000000, PS=0E870610
%TRACE-F-TRACEBACK, symbolic stack dump follows
image module routine line rel PC abs PC
CHMENU_MAIN CH_ERROR_HANDLER_ROUTINE CH_ERROR_HANDLER_ROUTINE
2867 00000000000042A0 000000000E870610
DEC$FORRTL 0 00000000000DA822 FFFFFFFF8528E822
0 FFFFFFFF803A6AE2 FFFFFFFF803A6AE2
----- Above condition handler called with exception 00000574
%SYSTEM-F-SUBRNG1, subscript 1 range error, PC=000000000E9880F1, PS=0000001B
----- End of Exception message
0 FFFFFFFF80398E92 FFFFFFFF80398E92
CHMENU_MAIN CHCREATEMEMTABLES CHCREATEMEMTABLES
4341 0000000000004400 000000000E9880F0
CHMENU_MAIN NW_CHARTSUB NW_CHARTSUB 5341 000000000000F4A2 000000000E8A9412
CHMENU_MAIN CHMENU_NEW CHMENU_NEW 3246 0000000000003621 000000000E812BA1
CHMENU_MAIN CHMENU_MAIN main 8942 0000000000000B60 000000000E800B60
CHMENU_MAIN CHMENU_MAIN __main 8853 0000000000000101 000000000E800101
0 FFFFFFFF80A327D2 FFFFFFFF80A327D2
DCL 0 000000000007D472 000000007AE2D472
%TRACE-I-END, end of TRACE stack dump

[NirmalCRIS · Accepted solution]

Problem get resolved. As, I have mentioned in problem that we have 2 different error handler and I was trying to catch trace back stack dump during exception handler in Fortran but in fact call was getting transferred to C error handler whenever any of above written commands were getting executed. I got the the traceback dump in C error handler using below command -

CMND='SHOW CALLS;GO;EXIT'  --->CALL LIB$SIGNAL(SS$_DEBUG,1,CMND)