[ns] segmentation fault on vfprintf.c?

[Robin Poss <robin@ee.cornell.edu>]

Hello, 

When I run ns on a simple wireless example I get a segmentation
fault after some time of execution (and plenty of
successfuls printf(), fprintf() and fprintf(stdout, "yadda")), 
and gdb the debugger tells me the following about this fault:

#0  0x4017694a in _IO_vfprintf (s=0x0,
    format=0x81882c3 "(%d) Entering Dijkstra (%f)\n", ap=0xbfffd004)
    at vfprintf.c:1024
vfprintf.c:1024: No such file or directory.    

I indeed don't have any file "vfprintf.c" on my hard disks.
Could you tell me what's wrong and what I can do about it?

Cheers,
 -- 
Robin