(gdb) bt
#0  0x00007ffff07e60f4 in _int_free () at /usr/lib/libc.so.6
#1  0x00007ffff516698c in  () at /usr/lib/libglib-2.0.so.0
#2  0x00007ffff51672cf in g_hash_table_unref () at /usr/lib/libglib-2.0.so.0
#3  0x00007ffff4a7e562 in  () at /usr/lib/libgtk-x11-2.0.so.0
#4  0x00007ffff4a7f760 in  () at /usr/lib/libgtk-x11-2.0.so.0
#5  0x00007ffff4a60132 in  () at /usr/lib/libgtk-x11-2.0.so.0
#6  0x00007ffff4a61b05 in  () at /usr/lib/libgtk-x11-2.0.so.0
#7  0x00007ffff4a61ce4 in  () at /usr/lib/libgtk-x11-2.0.so.0
#8  0x00007ffff4a61f43 in  () at /usr/lib/libgtk-x11-2.0.so.0
#9  0x00007ffff4a626f9 in gtk_rc_reparse_all_for_settings ()
    at /usr/lib/libgtk-x11-2.0.so.0
#10 0x00007ffff5451f75 in g_closure_invoke () at /usr/lib/libgobject-2.0.so.0
#11 0x00007ffff5463f82 in  () at /usr/lib/libgobject-2.0.so.0
#12 0x00007ffff546cbdc in g_signal_emit_valist ()
    at /usr/lib/libgobject-2.0.so.0
#13 0x00007ffff546cfbf in g_signal_emit () at /usr/lib/libgobject-2.0.so.0
#14 0x00007ffff54563a4 in  () at /usr/lib/libgobject-2.0.so.0
#15 0x00007ffff5455c46 in  () at /usr/lib/libgobject-2.0.so.0
#16 0x00007ffff545a130 in g_object_set_property ()
    at /usr/lib/libgobject-2.0.so.0
#17 0x0000000000c5d84a in  ()
#18 0x0000000000c5dbed in  ()
#19 0x00000000004cb9a2 in  ()
#20 0x0000000000c53d09 in  ()
---Type <return> to continue, or q <return> to quit---
#21 0x0000000000c53f4e in  ()
#22 0x00000000004f0d9c in  ()
#23 0x000000000049dd3a in  ()
#24 0x00007ffff078d511 in __libc_start_main () at /usr/lib/libc.so.6
#25 0x00000000004a89fa in  ()