$ gdb xfce4-terminal 
GNU gdb (GDB) 7.5.1
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-unknown-linux-gnu".
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>...
Reading symbols from /home/hashimo/git/xfce.d/apps/xfce4-terminal/terminal/xfce4-terminal...done.
(gdb) run
Starting program: /home/hashimo/git/xfce.d/apps/xfce4-terminal/terminal/xfce4-terminal 
warning: Could not load shared library symbols for linux-vdso.so.1.
Do you need "set solib-search-path" or "set sysroot"?
Traceback (most recent call last):
  File "/usr/share/gdb/auto-load/usr/lib/libgobject-2.0.so.0.3400.3-gdb.py", line 9, in <module>
    from gobject import register
  File "/usr/share/glib-2.0/gdb/gobject.py", line 3, in <module>
    import gdb.backtrace
ImportError: No module named backtrace
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/usr/lib/libthread_db.so.1".
[New Thread 0x7fffed8e0700 (LWP 28647)]
[New Thread 0x7fffe7fff700 (LWP 28648)]
[New Thread 0x7fffdea39700 (LWP 28652)]

(xfce4-terminal:28643): Gtk-CRITICAL **: IA__gtk_button_get_relief: assertion `GTK_IS_BUTTON (button)' failed

Program received signal SIGTRAP, Trace/breakpoint trap.
0x00007ffff5f64a27 in g_logv () from /usr/lib/libglib-2.0.so.0
(gdb) bt
#0  0x00007ffff5f64a27 in g_logv () from /usr/lib/libglib-2.0.so.0
#1  0x00007ffff5f64bf2 in g_log () from /usr/lib/libglib-2.0.so.0
#2  0x00007ffff73895f4 in gtk_button_get_relief ()
   from /usr/lib/libgtk-x11-2.0.so.0
#3  0x00007ffff74faeb6 in ?? () from /usr/lib/libgtk-x11-2.0.so.0
#4  0x00007ffff621f614 in g_cclosure_marshal_VOID__OBJECTv ()
   from /usr/lib/libgobject-2.0.so.0
#5  0x00007ffff621c467 in ?? () from /usr/lib/libgobject-2.0.so.0
#6  0x00007ffff6234e66 in g_signal_emit_valist ()
   from /usr/lib/libgobject-2.0.so.0
#7  0x00007ffff62356b2 in g_signal_emit () from /usr/lib/libgobject-2.0.so.0
#8  0x00007ffff755020a in ?? () from /usr/lib/libgtk-x11-2.0.so.0
#9  0x00007ffff75503d8 in ?? () from /usr/lib/libgtk-x11-2.0.so.0
#10 0x00007ffff7551864 in gtk_widget_set_parent ()
   from /usr/lib/libgtk-x11-2.0.so.0
#11 0x00007ffff738074e in ?? () from /usr/lib/libgtk-x11-2.0.so.0
#12 0x000000000042451c in terminal_window_action_show_toolbar (action=
    0x6b5170, window=0x6f30e0) at terminal-window.c:1493
#13 0x00007ffff621c1a0 in g_closure_invoke ()
   from /usr/lib/libgobject-2.0.so.0
#14 0x00007ffff622d5b0 in ?? () from /usr/lib/libgobject-2.0.so.0
#15 0x00007ffff623551c in g_signal_emit_valist ()
   from /usr/lib/libgobject-2.0.so.0
#16 0x00007ffff62356b2 in g_signal_emit () from /usr/lib/libgobject-2.0.so.0
#17 0x00007ffff7370dd8 in ?? () from /usr/lib/libgtk-x11-2.0.so.0
---Type <return> to continue, or q <return> to quit---
#18 0x00007ffff739f8ab in ?? () from /usr/lib/libgtk-x11-2.0.so.0
#19 0x00007ffff621c467 in ?? () from /usr/lib/libgobject-2.0.so.0
#20 0x00007ffff6234e66 in g_signal_emit_valist ()
   from /usr/lib/libgobject-2.0.so.0
#21 0x00007ffff62356b2 in g_signal_emit () from /usr/lib/libgobject-2.0.so.0
#22 0x00007ffff75492fc in gtk_widget_activate ()
   from /usr/lib/libgtk-x11-2.0.so.0
#23 0x00007ffff7444d4d in gtk_menu_shell_activate_item ()
   from /usr/lib/libgtk-x11-2.0.so.0
#24 0x00007ffff74450ec in ?? () from /usr/lib/libgtk-x11-2.0.so.0
#25 0x00007ffff7432029 in ?? () from /usr/lib/libgtk-x11-2.0.so.0
#26 0x00007ffff621c1a0 in g_closure_invoke ()
   from /usr/lib/libgobject-2.0.so.0
#27 0x00007ffff622d330 in ?? () from /usr/lib/libgobject-2.0.so.0
#28 0x00007ffff623513b in g_signal_emit_valist ()
   from /usr/lib/libgobject-2.0.so.0
#29 0x00007ffff62356b2 in g_signal_emit () from /usr/lib/libgobject-2.0.so.0
#30 0x00007ffff754a0ce in ?? () from /usr/lib/libgtk-x11-2.0.so.0
#31 0x00007ffff74303c4 in gtk_propagate_event ()
   from /usr/lib/libgtk-x11-2.0.so.0
#32 0x00007ffff743071b in gtk_main_do_event ()
   from /usr/lib/libgtk-x11-2.0.so.0
#33 0x00007ffff6e9853c in ?? () from /usr/lib/libgdk-x11-2.0.so.0
#34 0x00007ffff5f5d845 in g_main_context_dispatch ()
   from /usr/lib/libglib-2.0.so.0
---Type <return> to continue, or q <return> to quit---
#35 0x00007ffff5f5db78 in ?? () from /usr/lib/libglib-2.0.so.0
#36 0x00007ffff5f5df72 in g_main_loop_run () from /usr/lib/libglib-2.0.so.0
#37 0x00007ffff742f727 in gtk_main () from /usr/lib/libgtk-x11-2.0.so.0
#38 0x000000000040ce90 in main (argc=1, argv=0x7fffffffe088) at main.c:321
(gdb) quit
A debugging session is active.

	Inferior 1 [process 28643] will be killed.

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