Thanks, It solve problem. How about I found out direct link on dbus-ping-XXXX.c on freedesktop.orf? <div>On 10/24/07, Kimmo Hämäläinen <<a href="mailto:kimmo.hamalainen@nokia.com"> kimmo.hamalainen@nokia.com</a>> wrote:<blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">On Wed, 2007-10-24 at 12:04 +0300, ext Vitaly V. Ch wrote: > > > ---------- Forwarded message ---------- > From: Vitaly V. Ch <<a href="mailto:vitaly.v.ch@gmail.com">vitaly.v.ch@gmail.com</a>> > Date: Oct 23, 2007 4:52 PM > Subject: Re: SEGV in dbus-ping-send.c > To: Rafaël Carré <<a href="mailto:funman@videolan.org">funman@videolan.org</a>> > > Hm. It's success. Thanks > But At now I have another troubles with dbus-ping-listen. > > sources and valgrind log is attached > > bash-3.1# gdb ./dbus-ping-listen > GNU gdb 6.6 > Copyright (C) 2006 Free Software Foundation, Inc. > GDB is free software, covered by the GNU General Public License, and > you are > welcome to change it and/or distribute copies of it under certain > conditions. > 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) run > Starting program: /root/projects.izum/dbus.ping/dbus-ping-listen > Ping received: Ping! > > Program received signal SIGSEGV, Segmentation fault. > 0xb7d4e0c7 in free () from /lib/libc.so.6 > (gdb) bt > #0  0xb7d4e0c7 in free () from /lib/libc.so.6 > #1  0xb7f17e91 in dbus_free () from /usr/lib/libdbus-1.so.3 > #2  0x080488db in signal_filter (connection=0x804b6e8, > message=0x804bb10, user_data=0x804ae88) at dbus-ping-listen.c :57 Just remove the dbus_free() call from signal_filter(), the string is not a copy. BR, Kimmo > #3  0xb7efea2c in dbus_connection_dispatch () > from /usr/lib/libdbus-1.so.3 > #4  0xb7f2b56d in ?? () from /usr/lib/libdbus-glib-1.so.2 > #5  0x0804b6e8 in ?? () > #6  0x0804d4b8 in ?? () > #7  0xbfbbf188 in ?? () > #8  0xb7e69da2 in g_slist_prepend () from /usr/lib/libglib-2.0.so.0 > #9  0xb7e51b11 in g_main_context_dispatch () > from /usr/lib/libglib- 2.0.so.0 > #10 0xb7e54b86 in ?? () from /usr/lib/libglib-2.0.so.0 > #11 0x0804a008 in ?? () > #12 0x00000000 in ?? () > (gdb) quit > The program is running.  Exit anyway? (y or n) y > bash-3.1# > > > > On 10/23/07, Rafaël Carré <<a href="mailto:funman@videolan.org">funman@videolan.org</a>> wrote: >         -----BEGIN PGP SIGNED MESSAGE----- >         Hash: SHA1 > >         Vitaly V. Ch a écrit : >         > 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 >         > Copyright (C) 2006 Free Software Foundation, Inc. >         > GDB is free software, covered by the GNU General Public >         License, and you are >         > welcome to change it and/or distribute copies of it under >         certain >         > conditions. >         > 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 >         > > >           char *ping = "Ping!"; >           dbus_message_append_args (message, >                                     DBUS_TYPE_STRING, &ping, > >         is the correct way to go > >         - -- >         Rafaël Carré >         -----BEGIN PGP SIGNATURE----- >         Version: GnuPG v1.4.6 (GNU/Linux) >         Comment: Using GnuPG with Mozilla - <a href="http://enigmail.mozdev.org">http://enigmail.mozdev.org</a> > >         iD8DBQFHHfeiYWCeGMCv8Q8RAh5xAJ4jTutO7trbdMAOQHQ9shRQLlr6wQCZAYWU >         LtIq8fHm9ukaqH4ygohzx+Y= >         =lhVY >         -----END PGP SIGNATURE----- > > > > _______________________________________________ > dbus mailing list > <a href="mailto:dbus@lists.freedesktop.org">dbus@lists.freedesktop.org</a> > <a href="http://lists.freedesktop.org/mailman/listinfo/dbus">http://lists.freedesktop.org/mailman/listinfo/dbus</a> </blockquote></div>