// Standard run:
//
//     $ G_SLICE=always-malloc G_DEBUG=gc-friendly valgrind --tool=memcheck --leak-check=summary ./test
//
//     ==602== LEAK SUMMARY:
//     ==602==    definitely lost: 3,000 bytes in 8 blocks
//     ==602==    indirectly lost: 6,608 bytes in 208 blocks
//
// Comment out two lines below:
//
//     $ G_SLICE=always-malloc G_DEBUG=gc-friendly valgrind --tool=memcheck --leak-check=summary ./test
//
//     ==793== LEAK SUMMARY:
//     ==793==    definitely lost: 184 bytes in 2 blocks
//     ==793==    indirectly lost: 240 bytes in 10 blocks


public static int main(string[] args) {
    var app = new Application();
    return app.run(args);
}

class Application : Gtk.Application {

    Gtk.Window window;

    construct {
        application_id = "com.test";
        activate.connect(on_activate);
    }

    void on_activate() {
        if (window != null) {
            window.present();
            return;
        }
        window = new Gtk.Window();
        window.resize(300, 100);

        var toolbar = new Gtk.Toolbar();

        // COMMENT TWO LINES TO SEE MEMLEAKS DISAPPEAR
        Gtk.ToolButton tb = new Gtk.ToolButton.from_stock("gtk-info");
        toolbar.insert(tb, 0);

        var vbox = new Gtk.VBox(false, 0);
        vbox.pack_start(toolbar, false);

        window.add(vbox);
        window.show_all();

        add_window(window);
    }
}