modification on treeview blocks or crashes if using g_threads

[Martin SCHREIBER <martin schreiber in tum de>]

hi there,

i'm not sure if this is a bug so i'm going to post this here and ask for
your advice.
maybe there's a mistake in using the g_threads in the attached program?

there are 2 ways how the program sucks:

1) sometimes it just hangs up directly after start. if i move parts of
the window over the screenborder and back, the graphic isnt restored.

2) sometimes it updates the list (as it should be) but if i click on the
list a lot of times i get the following error message:
** ERROR **: file gailtreeview.c: line 3755 (traverse_cells): assertion
failed: (row_path != NULL)
and the program aborts.

greez,

martin



-- 
Martin Schreiber

http://www.martin-schreiber.net

| Im Muehltal 48
| 91171 Greding
| GERMANY


/* 
 * Compile with:
 *  gcc -o helloworld helloworld.c `pkg-config --cflags --libs gtk+-2.0` -lgthread-2.0
 *
 */

#include <gtk/gtk.h>


GtkListStore	*store;
GtkTreeModel	*model;


static GtkWidget *
create_view_and_model (void)
{
  GtkCellRenderer     *renderer;
  GtkWidget           *view;

  view = gtk_tree_view_new ();

  renderer = gtk_cell_renderer_text_new ();
  gtk_tree_view_insert_column_with_attributes (GTK_TREE_VIEW (view),
                                               -1,      
                                               "Name",  
                                               renderer,
                                               "text", 0,
                                               NULL);

  store = gtk_list_store_new (1, G_TYPE_STRING);
  model = GTK_TREE_MODEL (store);

  gtk_tree_view_set_model (GTK_TREE_VIEW (view), model);

  g_object_unref (model);

  return view;
}

void *threadLoop(void *asdf)
{
	while(1)
	{
		gdk_threads_enter();
		GtkTreeIter iter;
		gtk_list_store_clear(store);

		for (int i = 0; i < 10; i++)
		{
			gtk_list_store_append(  store, &iter);
			gtk_list_store_set(     store, &iter,
					0,             "TEST TEST TEST TEST TEST TEST TEST TEST TEST TEST",
					-1);
		}
		gdk_threads_leave();
	}
}


int
main (int argc, char **argv)
{
g_thread_init(NULL);
gdk_threads_init();
gdk_threads_enter();
  GtkWidget *window;
  GtkWidget *view;

  gtk_init (&argc, &argv);

  window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
  g_signal_connect (window, "delete_event", gtk_main_quit, NULL); /* dirty */

  view = create_view_and_model ();
  gtk_container_add (GTK_CONTAINER (window), view);
  gtk_widget_show_all (window);

g_thread_create(&threadLoop, 0, true, 0);

  gtk_main ();
gdk_threads_leave();

  return 0;
}