bug#12600: 24.2.50; linum-mode: line numbers in fringe do not refresh when resizing frame

[martin rudalics <rudalics@gmx.at>]

 > When you reproduce the problem, do you see the code conditioned by the
 > 'if' shown below being executed at all?

No.

 > (Btw, it looks like linum-mode doesn't expect to get nil from
 > window-end, although the doc string explicitly says it's possible.)

I suppose the doc-string is wrong since otherwise we should have seen
this already reported.  IIUC it returns either

       value = make_number (IT_CHARPOS (it));

or

     XSETINT (value, BUF_Z (b) - XFASTINT (w->window_end_pos));

while the nil reporting part was disabled.

 >
 >   if (! NILP (update)
 >       && ! (! NILP (w->window_end_valid)
 > 	    && w->last_modified >= BUF_MODIFF (b)
 > 	    && w->last_overlay_modified >= BUF_OVERLAY_MODIFF (b))
 >       && !noninteractive)

Is there anything that has not been set when the frame got resized?

martin