[DGD] crash in latest dgd driver

[Kent Mein]

Hi Felix,

I keep getting a crash since I updated dgd.  I'm wondering if a bug didn't
slip in.  To reproduce:  fireup the driver.  login, logout, login, logout,
wait a minute or two and boom.

Here is a gdb backtrace:
0x080556c3 in d_ref_dataspace (data=0xb7dd0cdc) at sdata.c:747
747             data->prev->next = data->next;
(gdb) bt
#0  0x080556c3 in d_ref_dataspace (data=0xb7dd0cdc) at sdata.c:747
#1  0x080511d0 in o_dataspace (o=0x80e0a48) at object.c:995
#2  0x08062983 in i_funcall (prev_f=0x80c60a0, obj=0x80e0a48, lwobj=0x0, 
    p_ctrli=2, funci=17, nargs=1) at interpret.c:2680
#3  0x08064f27 in i_call (f=0x80c60a0, obj=0x80e0a48, lwobj=0x0, 
    func=<optimized out>, len=13, call_static=1, nargs=1) at interpret.c:3016
#4  0x0805bd2c in comm_receive (f=0x80c60a0, timeout=<optimized out>, 
    mtime=<optimized out>) at comm.c:1162
#5  0x0806973e in dgd_main (argc=<optimized out>, argv=<optimized out>)
    at dgd.c:223
#6  0x0809b479 in main (argc=2, argv=0xbffffab4) at local.c:46

I haven't had any additional time to poke at it....

Thought you might want to know though :)

Kent
-- 
mein at cs.umn.edu
http://www.cs.umn.edu/~mein