Text View Complaining about Double Free or Corruption

["Mark Rodriguez" <macrod gmail com>]

Was wondering if anybody has any idea(s) why the code below would seem
to work fine on GTK/X11 (at least I don't see any error messages), but
fail on GTK/DirectFB? When the application is exited by hitting the
"Quit" button, I receive the following error message:

*** glibc detected *** TextDemo: double free or corruption (out): 0x4035b1b0 ***

I'm trying to figure out if this is a GTK related problem (i.e., am
I'm doing something wrong in GTK) or a problem with GTK/DirectFB. I
have to assume that my code IS the problem, but I just don't see where
/ how. Thanks in advance for any suggestions or help.

[code]
#include "common.h"

GtkWidget* main_window;

static gboolean destroy_event(GtkWidget* widget, void* data)
{
       gtk_main_quit();
       return FALSE;
}

static void button_click_event(void)
{
       gtk_widget_destroy(main_window);
}

int main(int argc, char* argv[])
{
       GtkWidget *text_view, *box, *button;

       // initialize multi-threading within GLib
       g_thread_init(NULL);

       // initialize multi-threading within GDK
       gdk_threads_init();

       // acquire thread lock
       gdk_threads_enter();
       gtk_init(&argc, &argv);

       // create main window
       main_window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
       if (main_window == NULL)
               abort();
       g_signal_connect(G_OBJECT(main_window), "destroy",
G_CALLBACK(destroy_event), NULL);
       gtk_widget_show(main_window);

       box = gtk_vbox_new(FALSE, 5);
       if (box == NULL)
               abort();
       gtk_widget_show(box);
       gtk_container_add(GTK_CONTAINER(main_window), box);

       text_view = gtk_text_view_new();
       if (text_view == NULL)
               abort();
       gtk_widget_show(text_view);
       gtk_box_pack_start(GTK_BOX(box), text_view, TRUE, TRUE, 5);

       button = gtk_button_new_with_label("Quit");
       if (button == NULL)
               abort();
       g_signal_connect(G_OBJECT(button), "clicked",
G_CALLBACK(button_click_event), NULL);
       gtk_widget_show(button);
       gtk_box_pack_start(GTK_BOX(box), button, TRUE, TRUE, 5);

       // run the main loop
       gtk_main();

       // release thread lock
       gdk_threads_leave();

       return 0;
}
[/code]

--
Mark