.
Thread 1 (process 5998):
#0  0x00000000005022ab in Gabber::RosterController::iter_has_child_vfunc ()
#1  0x00002b3848d8bdc7 in Gtk::TreeModel_Class::iter_has_child_vfunc_callback
    () from /usr/lib64/libgtkmm-2.4.so.1
#2  0x00002b385114150f in ?? () from /usr/lib/gtk-2.0/modules/libgail.so
#3  0x00002b38511415a3 in ?? () from /usr/lib/gtk-2.0/modules/libgail.so
#4  0x00002b385114464e in ?? () from /usr/lib/gtk-2.0/modules/libgail.so
#5  0x00002b384cc67929 in g_closure_invoke ()
   from /usr/lib64/libgobject-2.0.so.0
#6  0x00002b384cc78827 in ?? () from /usr/lib64/libgobject-2.0.so.0
#7  0x00002b384cc79bdd in g_signal_emit_valist ()
   from /usr/lib64/libgobject-2.0.so.0
#8  0x00002b384cc79e93 in g_signal_emit () from /usr/lib64/libgobject-2.0.so.0
#9  0x00002b3849e5fe09 in gtk_tree_view_insert_column ()
   from /usr/lib64/libgtk-x11-2.0.so.0
#10 0x0000000000515b6a in Gabber::RosterView::add_columns ()
#11 0x00000000005171f2 in Gabber::RosterView::RosterView ()
#12 0x00000000004c8038 in Gabber::GabberWin::GabberWin ()
#13 0x00000000004b70db in Gabber::GabberApp::init_win ()
#14 0x00000000004f1c71 in Gabber::LoginDlg::on_LogIn_clicked ()
#15 0x00002b38499db893 in Glib::SignalProxyNormal::slot0_void_callback ()
   from /usr/lib64/libglibmm-2.4.so.1
#16 0x00002b384cc67929 in g_closure_invoke ()
   from /usr/lib64/libgobject-2.0.so.0
#17 0x00002b384cc78aec in ?? () from /usr/lib64/libgobject-2.0.so.0
#18 0x00002b384cc79bdd in g_signal_emit_valist ()
   from /usr/lib64/libgobject-2.0.so.0
#19 0x00002b384cc79e93 in g_signal_emit () from /usr/lib64/libgobject-2.0.so.0
#20 0x00002b3849c7fd99 in ?? () from /usr/lib64/libgtk-x11-2.0.so.0
#21 0x00002b3848cfbfe1 in Gtk::Button_Class::released_callback ()
   from /usr/lib64/libgtkmm-2.4.so.1
#22 0x00002b384cc67929 in g_closure_invoke ()
   from /usr/lib64/libgobject-2.0.so.0
#23 0x00002b384cc78c88 in ?? () from /usr/lib64/libgobject-2.0.so.0
#24 0x00002b384cc79bdd in g_signal_emit_valist ()
   from /usr/lib64/libgobject-2.0.so.0
#25 0x00002b384cc79e93 in g_signal_emit () from /usr/lib64/libgobject-2.0.so.0
#26 0x00002b3849c7e069 in ?? () from /usr/lib64/libgtk-x11-2.0.so.0
#27 0x00002b3848d9eab2 in Gtk::Widget::on_button_release_event ()
   from /usr/lib64/libgtkmm-2.4.so.1
#28 0x00002b3848d9c2c9 in Gtk::Widget_Class::button_release_event_callback ()
   from /usr/lib64/libgtkmm-2.4.so.1
#29 0x00002b3849d5f791 in ?? () from /usr/lib64/libgtk-x11-2.0.so.0
#30 0x00002b384cc67929 in g_closure_invoke ()
   from /usr/lib64/libgobject-2.0.so.0
#31 0x00002b384cc78e53 in ?? () from /usr/lib64/libgobject-2.0.so.0
#32 0x00002b384cc79a78 in g_signal_emit_valist ()
   from /usr/lib64/libgobject-2.0.so.0
#33 0x00002b384cc79e93 in g_signal_emit () from /usr/lib64/libgobject-2.0.so.0
#34 0x00002b3849e8117e in ?? () from /usr/lib64/libgtk-x11-2.0.so.0
#35 0x00002b3849d5736c in gtk_propagate_event ()
   from /usr/lib64/libgtk-x11-2.0.so.0
#36 0x00002b3849d584d9 in gtk_main_do_event ()
   from /usr/lib64/libgtk-x11-2.0.so.0
#37 0x00002b384a59cc0c in ?? () from /usr/lib64/libgdk-x11-2.0.so.0
#38 0x00002b384d0d5fc3 in g_main_context_dispatch ()
   from /usr/lib64/libglib-2.0.so.0
#39 0x00002b384d0d92cd in ?? () from /usr/lib64/libglib-2.0.so.0
#40 0x00002b384d0d95da in g_main_loop_run () from /usr/lib64/libglib-2.0.so.0
#41 0x00002b3849d588e3 in gtk_main () from /usr/lib64/libgtk-x11-2.0.so.0
#42 0x000000000053d16e in main ()