bus error in gtknotebook.c:945

[Sebastian Wilhelmi <wilhelmi ira uka de>]

Hi,

I've compiled gtk+-971201 on a 'SunOS 5.5.1 Generic sun4m' with 
'gcc version 2.7.2.2'

It works quite fine, but there is an anoying bug, which I hereby want to
report:

if you press inside a notebook (i.e. the page of a notebook) and there
is for instance a label, than a bus error is signaled and of course a
core dumped.

So if I debug this, the problem occurs in line 945 of the file
gtknotebook.c:

921  static gint
922  gtk_notebook_button_press (GtkWidget      *widget,
923                             GdkEventButton *event)
924  {
925    GtkNotebook *notebook;
926    GtkNotebookPage *page;
927    GList *children;
928  
929    g_return_val_if_fail (widget != NULL, FALSE);
930    g_return_val_if_fail (GTK_IS_NOTEBOOK (widget), FALSE);
931    g_return_val_if_fail (event != NULL, FALSE);
932  
933    if ((event->type != GDK_BUTTON_PRESS) ||
934        (event->window != widget->window))
935      return FALSE;
936  
937    notebook = GTK_NOTEBOOK (widget);
938  
939    children = notebook->children;
940    while (children)
941      {
942        page = children->data;
943        children = children->next;
944  
945        if (GTK_WIDGET_VISIBLE (page->child) &&
946            (event->x >= page->allocation.x) &&
947            (event->y >= page->allocation.y) &&
948            (event->x <= (page->allocation.x +
page->allocation.width)) &&
949            (event->y <= (page->allocation.y +
page->allocation.height)))
950          {
951            gtk_notebook_switch_page (notebook, page);
952            break;
953          }
954      }
955  
956    return FALSE;
957  }

Now the funny thing. If I set a breakpoint at the start of the function
and move through the code with "next" in gdb, everything works fine, but
If I just press "cont", it dumps core again. So It seems to me like a
timimg problem, but is there another thread writing things somewhere? (i
dont think so.)

So, this might of course as well be a gcc- or sunos-bug. 

I'm sorry, but I cant do anything about it. I hope, some of you guys
can.

BTW: If I bind a function to the event "release" of a button and do a
gtk_button_set_sensitive( button, 0 ) in this function, then the
backgroundcolor of the button isn't restored properly. Something similar
applies to the focus. If I bind a function to the event "focus_in" (?sp)
and do a grab_focus on another widget in this function, the old widget
stills looks like having the focus (is kind of sunken).
If those weren't bugs, but only my misunderstanding, then please ignore
this (or even better, write me, how such things should be implemented in
gtk)

Sebastian

-- 
+--------------============##################============--------------+
| Sebastian Wilhelmi, Institut fuer Rechnerentwurf und Fehlertoleranz, |
| Universitaet Karlsruhe;  Gebaeude 20.20, Raum 263, D-76128 Karlsruhe |
| mail: wilhelmi@ira.uka.de; fax: +49 721 370455; fon: +49 721 6084353 |
+----------------> http://goethe.ira.uka.de/~wilhelmi <----------------+