SEGV in dbus-ping-send.c

[Vitaly V. Ch]

I receive unexpected SIGSEGV at trying to start dbus-ping-send from
examples.

dbus-ping-send.c is attached.

system slackware-12.0

bash-3.1# gdb ./dbus-ping-send
GNU gdb 6.6
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GDB is free software, covered by the GNU General Public License, and you are
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Type "show copying" to see the conditions.
There is absolutely no warranty for GDB.  Type "show warranty" for details.
This GDB was configured as "i486-slackware-linux"...
Using host libthread_db library "/lib/libthread_db.so.1".
(gdb) break send_ping
Breakpoint 1 at 0x80487c7: file dbus-ping-send.c, line 44.
(gdb) run
Starting program: /root/projects.izum/dbus.ping/dbus-ping-send

Breakpoint 1, send_ping (bus=0x804b6e8) at dbus-ping-send.c:44
44        message = dbus_message_new_signal ("/com/burtonini/dbus/ping",
(gdb) next
47        dbus_message_append_args (message,
(gdb)

Program received signal SIGSEGV, Segmentation fault.
0xb7cec253 in strlen () from /lib/libc.so.6
(gdb) bt
#0  0xb7cec253 in strlen () from /lib/libc.so.6
#1  0xb7eb2751 in ?? () from /usr/lib/libdbus-1.so.3
#2  0x676e6950 in ?? ()
#3  0x00000061 in ?? ()
#4  0x0000006c in ?? ()
#5  0xbfe8d398 in ?? ()
#6  0xb7dbbff4 in ?? () from /lib/libc.so.6
#7  0xb7dbd120 in ?? () from /lib/libc.so.6
#8  0x0000000c in ?? ()
#9  0xb7eb3a3c in ?? () from /usr/lib/libdbus-1.so.3
#10 0xb7ce7b7e in malloc () from /lib/libc.so.6
#11 0xb7e9f4cc in ?? () from /usr/lib/libdbus-1.so.3
#12 0x0804bb50 in ?? ()
#13 0x00000000 in ?? ()
(gdb) quit
The program is running.  Exit anyway? (y or n) y
bash-3.1#


Log of runing under valgrind is attached also
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