tek@debian:~/tmp/avant-window-navigator/src$ gdb ./avant-window-navigator
GNU gdb 6.6-debian
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-linux-gnu"...
Using host libthread_db library "/lib/tls/i686/cmov/libthread_db.so.1".
(gdb) run
Starting program: /home/tek/tmp/avant-window-navigator/src/avant-window-navigator
Failed to read a valid object file image from memory.
[Thread debugging using libthread_db enabled]
[New Thread -1223711040 (LWP 1539)]
(process:1539): Gtk-CRITICAL **: gtk_icon_theme_get_for_screen: assertion `GDK_IS_SCREEN (screen)' failed
Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread -1223711040 (LWP 1539)]
do_shape_combine_mask (window=0x0, mask=0x0, x=0, y=0) at awn-bar.c:318
318 if (!XShapeQueryExtension (GDK_WINDOW_XDISPLAY (window), &ignore, &ignore))
(gdb) bt
#0 do_shape_combine_mask (window=0x0, mask=0x0, x=0, y=0) at awn-bar.c:318
#1 0x0804d4c7 in _update_input_shape (window=0x80a2030, width=<value optimized out>, height=<value optimized out>) at awn-bar.c:363
#2 0x0804d6d1 in awn_bar_new (set=0x8056030) at awn-bar.c:92
#3 0x0804c35e in main (argc=1, argv=0xbfc6c654) at main.c:63
(gdb)