nullclient result

GNU gdb (GDB) 7.5-ubuntu
Copyright (C) 2012 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.  Type "show copying"
and "show warranty" for details.
This GDB was configured as "x86_64-linux-gnu".
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>...
Reading symbols from /home/huyhoa/Downloads/example/nullclient...(no debugging symbols found)...done.
(gdb) r
Starting program: /home/huyhoa/Downloads/example/nullclient
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
(17:16:52) prefs: Reading /home/huyhoa/prefs.xml
(17:16:52) prefs: Reading /etc/purple/prefs.xml
(17:16:52) dbus: okkk
(17:16:52) plugins: probing /usr/lib/purple-2/joinpart.so
(17:16:52) plugins: probing /usr/lib/purple-2/libirc.so
(17:16:52) plugins: probing /usr/lib/purple-2/libxmpp.so
(17:16:52) plugins: probing /usr/lib/purple-2/psychic.so
(17:16:52) plugins: probing /usr/lib/purple-2/buddynote.so
(17:16:52) plugins: probing /usr/lib/purple-2/libbonjour.so
(17:16:52) plugins: probing /usr/lib/purple-2/log_reader.so
(17:16:52) plugins: probing /usr/lib/purple-2/libaim.so
(17:16:52) plugins: probing /usr/lib/purple-2/statenotify.so
(17:16:52) plugins: probing /usr/lib/purple-2/libicq.so
(17:16:52) plugins: probing /usr/lib/purple-2/libmsn.so
(17:16:52) plugins: probing /usr/lib/purple-2/libmxit.so
(17:16:52) prpl-loubserp-mxit: Loading MXit libPurple plugin...
(17:16:52) plugins: probing /usr/lib/purple-2/pidgin-libnotify.so
(17:16:53) plugins: /usr/lib/purple-2/pidgin-libnotify.so is not loadable: undefined symbol: pidgin_blist_visibility_manager_add
(17:16:53) plugins: probing /usr/lib/purple-2/offlinemsg.so
(17:16:53) plugins: probing /usr/lib/purple-2/libyahoo.so
(17:16:53) plugins: probing /usr/lib/purple-2/libyahoojp.so
(17:16:53) plugins: probing /usr/lib/purple-2/libnovell.so
(17:16:53) plugins: probing /usr/lib/purple-2/libsametime.so
(17:16:53) plugins: /usr/lib/purple-2/libsametime.so has a prefs_info, but is a prpl. This is no longer supported.
(17:16:53) plugins: probing /usr/lib/purple-2/idle.so
(17:16:53) plugins: probing /usr/lib/purple-2/libymsg.so
(17:16:53) plugins: /usr/lib/purple-2/libymsg.so is not usable because the 'purple_init_plugin' symbol could not be found.  Does the plugin call the PURPLE_INIT_PLUGIN() macro?
(17:16:53) plugins: probing /usr/lib/purple-2/ssl-nss.so
(17:16:53) plugins: probing /usr/lib/purple-2/autoaccept.so
(17:16:53) plugins: probing /usr/lib/purple-2/libzephyr.so
(17:16:53) plugins: probing /usr/lib/purple-2/dbus-example.so
(17:16:53) plugins: probing /usr/lib/purple-2/libjabber.so
(17:16:53) plugins: /usr/lib/purple-2/libjabber.so is not usable because the 'purple_init_plugin' symbol could not be found.  Does the plugin call the PURPLE_INIT_PLUGIN() macro?
(17:16:53) plugins: probing /usr/lib/purple-2/libgg.so
(17:16:53) plugins: probing /usr/lib/purple-2/liboscar.so
(17:16:53) plugins: /usr/lib/purple-2/liboscar.so is not usable because the 'purple_init_plugin' symbol could not be found.  Does the plugin call the PURPLE_INIT_PLUGIN() macro?
(17:16:53) plugins: probing /usr/lib/purple-2/tcl.so
(17:16:53) plugins: /usr/lib/purple-2/tcl.so is not loadable: libtcl8.5.so.0: cannot open shared object file: No such file or directory
(17:16:53) plugins: probing /usr/lib/purple-2/newline.so
(17:16:53) plugins: probing /usr/lib/purple-2/ssl.so
(17:16:53) plugins: probing /usr/lib/purple-2/libmyspace.so
(17:16:53) plugins: probing /usr/lib/purple-2/libsimple.so
(17:16:53) plugins: probing /usr/lib/purple-2/perl.so
[New Thread 0x7fffe8913700 (LWP 6445)]

Program received signal SIGINT, Interrupt.
0x00007ffff5225148 in pthread_join () from /lib/x86_64-linux-gnu/libpthread.so.0
(gdb) bt
#0  0x00007ffff5225148 in pthread_join () from /lib/x86_64-linux-gnu/libpthread.so.0
#1  0x00007ffff72c19aa in my_thread_global_init () from /usr/lib/x86_64-linux-gnu/libmysqlclient.so.18
#2  0x00007ffff72bf3f8 in my_init () from /usr/lib/x86_64-linux-gnu/libmysqlclient.so.18
#3  0x00007ffff7de9316 in ?? () from /lib64/ld-linux-x86-64.so.2
#4  0x00007ffff7de93ef in ?? () from /lib64/ld-linux-x86-64.so.2
#5  0x00007ffff7dedaea in ?? () from /lib64/ld-linux-x86-64.so.2
#6  0x00007ffff7de9186 in ?? () from /lib64/ld-linux-x86-64.so.2
#7  0x00007ffff7ded32a in ?? () from /lib64/ld-linux-x86-64.so.2
#8  0x00007ffff49bcf26 in ?? () from /lib/x86_64-linux-gnu/libdl.so.2
#9  0x00007ffff7de9186 in ?? () from /lib64/ld-linux-x86-64.so.2
#10 0x00007ffff49bd52f in ?? () from /lib/x86_64-linux-gnu/libdl.so.2
#11 0x00007ffff49bcfc1 in dlopen () from /lib/x86_64-linux-gnu/libdl.so.2
#12 0x00007ffff5ee2851 in g_module_open () from /usr/lib/x86_64-linux-gnu/libgmodule-2.0.so.0
#13 0x00007ffff7b24ff5 in purple_plugin_probe () from /usr/lib/libpurple.so.0
#14 0x00007ffff7b255ee in purple_plugins_probe () from /usr/lib/libpurple.so.0
#15 0x00007ffff7b0778b in purple_core_init () from /usr/lib/libpurple.so.0
#16 0x0000000000401914 in init_libpurple ()
#17 0x0000000000401a2a in main ()
(gdb) q
A debugging session is active.

	Inferior 1 [process 6442] will be killed.

Quit anyway? (y or n)