(gdb) cont
Continuing.

Program received signal SIGABRT, Aborted.
[Switching to Thread 0xb6e2c6b0 (LWP 2580)]
0xb7fbf410 in __kernel_vsyscall ()
(gdb) thread apply all bt

Thread 1 (Thread 0xb6e2c6b0 (LWP 2580)):
#0  0xb7fbf410 in __kernel_vsyscall ()
#1  0xb73057f5 in raise () from /lib/i686/cmov/libc.so.6
#2  0xb7307181 in abort () from /lib/i686/cmov/libc.so.6
#3  0xb75b3ed9 in IA__g_logv (log_domain=0xb7bd3957 "Gtk", log_level=G_LOG_LEVEL_ERROR, 
    format=0xb75e49fc "file %s: line %d (%s): assertion failed: (%s)", args1=0xbfbf3f6c "\210�ŷ\215\006")
    at /tmp/buildd/glib2.0-2.14.3/glib/gmessages.c:497
#4  0xb75b3f09 in IA__g_log (log_domain=0xb7bd3957 "Gtk", log_level=G_LOG_LEVEL_ERROR, 
    format=0xb75e49fc "file %s: line %d (%s): assertion failed: (%s)") at /tmp/buildd/glib2.0-2.14.3/glib/gmessages.c:517
#5  0xb75b3f80 in IA__g_assert_warning (log_domain=0xb7bd3957 "Gtk", file=0xb7c5b588 "/tmp/buildd/gtk+2.0-2.12.1/gtk/gtkliststore.c", line=1677, 
    pretty_function=0xb7c5bc78 "gtk_list_store_compare_func", expression=0xb7c5b5b8 "VALID_ITER (&iter_b, list_store)")
    at /tmp/buildd/glib2.0-2.14.3/glib/gmessages.c:552
#6  0xb7a6d147 in gtk_list_store_compare_func (a=0x84c9268, b=0x8766ee8, user_data=0x88a7ed8) at /tmp/buildd/gtk+2.0-2.12.1/gtk/gtkliststore.c:1677
#7  0x081518b0 in node_find_closest (haystack=<value optimized out>, needle=0x8766ee8, end=0x87b2ef8, 
    cmp_func=0xb7a6d0a0 <gtk_list_store_compare_func>, cmp_data=0x88a7ed8) at gsequence.c:1136
#8  0x08151a7d in node_insert_sorted (node=0x0, new=0x8766ee8, end=0xa14, cmp_func=0xb7a6d0a0 <gtk_list_store_compare_func>, cmp_data=0x88a7ed8)
    at gsequence.c:1301
#9  0x081523ce in g_sequence_sort_changed_iter (iter=0x8766ee8, iter_cmp=0xb7a6d0a0 <gtk_list_store_compare_func>, cmp_data=0x88a7ed8)
    at gsequence.c:566
#10 0xb7a6d653 in gtk_list_store_sort_iter_changed (list_store=0x88a7ed8, iter=0xbfbf415c, column=<value optimized out>)
    at /tmp/buildd/gtk+2.0-2.12.1/gtk/gtkliststore.c:1758
#11 0xb7a6f3ac in IA__gtk_list_store_set_valist (list_store=0x88a7ed8, iter=0xbfbf415c, var_args=0xbfbf40f8 "")
    at /tmp/buildd/gtk+2.0-2.12.1/gtk/gtkliststore.c:901
---Type <return> to continue, or q <return> to quit---
#12 0xb7a6f412 in IA__gtk_list_store_set (list_store=0x88a7ed8, iter=0xbfbf415c) at /tmp/buildd/gtk+2.0-2.12.1/gtk/gtkliststore.c:934
#13 0xb7f67bad in ?? () from /usr/lib/libeel-2-2.18.so
#14 0x088a7ed8 in ?? ()
#15 0xbfbf415c in ?? ()
#16 0x00000000 in ?? ()
(gdb) quit
The program is running.  Quit anyway (and detach it)? (y or n) y
Detaching from program: /usr/bin/nautilus, process 2580

