Gtk::SpinButton crash

[John Emmas <johne53 tiscali co uk>]

        Gtk::SpinButton some_spin_button;
        Gtk::Adjustment some_adjuster (2, 0, 100, 1, 10, 0);
        some_spin_button.set_adjustment (some_adjuster);

If I include the above lines in any gtkmm app (and build with MSVC) the 
app eventually crashes at the stage where 'some_spin_button' is getting 
destroyed (this is with gtkmm 2.24.4).  If the app is run from a command 
line, Windows outputs a message saying "pure virtual function call" and 
then terminates it.  A couple of things might be significant:-

       1)  If I comment out the 3rd line the crash doesn't happen.
       2)  The crash has a very similar feel to the problem I reported 
very recently with derived windows and dialogs (i.e. the signs are very 
much like a C++ wrapper got disconnected from its C object too early).
       3)  The crash happens in 'gtk_spin_button_finalize()' while 
executing this line:-

               gtk_spin_button_set_adjustment (GTK_SPIN_BUTTON 
(object), NULL);

I could provide a more comprehensive example if needed but I thought I'd 
check first in case this is already a known issue.  AFAICT just adding 
those three lines to any gtkmm app is enough to trigger the problem.

John