Program received signal SIGTRAP, Trace/breakpoint trap.
[Switching to Thread 0xb8065a00 (LWP 2729)]
0x009e3d5f in g_logv () from /lib/libglib-2.0.so.0
(gdb) bt
#0  0x009e3d5f in g_logv () from /lib/libglib-2.0.so.0
#1  0x009e40d6 in g_log () from /lib/libglib-2.0.so.0
#2  0x009e433b in g_return_if_fail_warning () from /lib/libglib-2.0.so.0
#3  0x08061f24 in alphasort () at alphasort.c:24
#4  0x0805fcb4 in alphasort () at alphasort.c:24
#5  0x0096f86a in g_cclosure_marshal_VOID__STRING ()
   from /lib/libgobject-2.0.so.0
#6  0x0096115b in g_closure_invoke () from /lib/libgobject-2.0.so.0
#7  0x00977b3d in ?? () from /lib/libgobject-2.0.so.0
#8  0x00979270 in g_signal_emit_valist () from /lib/libgobject-2.0.so.0
#9  0x00979716 in g_signal_emit () from /lib/libgobject-2.0.so.0
#10 0x0805681f in alphasort () at alphasort.c:24
#11 0x08057892 in alphasort () at alphasort.c:24
#12 0x00783ef5 in dbus_connection_dispatch () from /lib/libdbus-1.so.3
#13 0x001a9f7d in ?? () from /usr/lib/libdbus-glib-1.so.2
#14 0x009da0b8 in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#15 0x009dd763 in ?? () from /lib/libglib-2.0.so.0
#16 0x009ddc82 in g_main_loop_run () from /lib/libglib-2.0.so.0
#17 0x004ea711 in gtk_main () from /usr/lib/libgtk-x11-2.0.so.0
#18 0x08051ca9 in alphasort () at alphasort.c:24
#19 0x00a98606 in __libc_start_main (main=0x8051a00 <alphasort+2412>, argc=1,
    ubp_av=0xbfd7e9e4, init=0x80749f0, fini=0x80749e0,
    rtld_fini=0x1200b0 <_dl_fini>, stack_end=0xbfd7e9dc) at libc-start.c:220
---Type <return> to continue, or q <return> to quit---
#20 0x08051901 in alphasort () at alphasort.c:24
(gdb)