[GRASS-user] v.net.iso problem or bug?

[Pierluigi De Rosa]

Dear grass users

I have a strange problem using v.net.iso
I'm doing an analysis on a river network in a very easy system ( I have
one main channel and two tributaries) in order to calculate distances
from outlet.
i'm running:
v.net.iso --overwrite input=streams_net output=myriver type=line
nlayer=2 ccats=1 costs=100,500,5000
but i have this error:
*** glibc detected *** v.net.iso: realloc(): invalid next size:
0x09c147b8 ***
======= Backtrace: =========
/lib/libc.so.6(+0x6c501)[0x17d501]
/lib/libc.so.6(+0x71c6d)[0x182c6d]

and so on

few months ago an other user have the same problem but it seems he
didn't go to a solution.
If I change the outlet point sometimes could happens v.net.iso work!
So sometimes it works sometimes not...
Is this a bug?
Thanks
Pierluigi