A qeustion about RSVP/ns?

[K Sun <ksun@essex.ac.uk>]

Hello, 
    Recently, I am studying RSVP/ns. However, up to now, I have not run 
it well. The problem is I always meet ""Segementation Fault (core dumped)" 
when I run the example files except "rsvp_conf.tcl".

     Using gdb, I try to find what caused the fault above when I run 
"rsvp_distinct.tcl". From the gdb informaiton, it seems it caused by 
FILTER_SPEC::get_addr(). The detailed informaiton is in the attached 
file. When I read Marc Greis' programs, I did not find why you call 
upcall-resv (in ns-rsvp.tcl) to display the information "1 RESV 
EVENT.....". Is there anybody who can give me a clue?
According to my understanding, it seems "..RESV EVENT.." can only be 
displayed by upcall-resv, can not it?
     I have tried use "next" or "step" for debugging, but it is still 
difficult to find which function call FILTER_SPEC::get_addr().

    It is really a pity I can not set a breakpoint in the TCL file 
ns-rsvp.tcl. I do not know whether Debugger Tip for TCL can be used to 
set a breakpoint in ns-rsvp.tcl. 

    I am anxious for this problem and hope some help,

    Thanks in advance!

    Sun Kai

err.rsvp