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bug#7348: 23.2.50; Emacs crashes on fast window resize with scrollbars o


From: YAMAMOTO Mitsuharu
Subject: bug#7348: 23.2.50; Emacs crashes on fast window resize with scrollbars on under OSX
Date: Mon, 08 Nov 2010 10:43:18 +0900
User-agent: Wanderlust/2.14.0 (Africa) SEMI/1.14.6 (Maruoka) FLIM/1.14.8 (Shijō) APEL/10.6 Emacs/22.3 (sparc-sun-solaris2.8) MULE/5.0 (SAKAKI)

>>>>> On Sun, 07 Nov 2010 11:34:24 +0100, martin rudalics <address@hidden> said:

>> The value of w->buffer was nil when the assertion failure occurred.

> IIUC this means the selected window was deleted and not replaced by
> another window.  Can you check whether this is already the case at
> the time redisplay_internal is entered?

That's not the case at the beginning of redisplay_internal, indeed.
The call to do_pending_window_change at line 11397 in xdisp.c
(emacs-23 branch) seems to change selected_window because of the
following call chain, but the variable `w' in redisplay_internal still
points to the old selected window.

  redisplay_internal
    -> do_pending_window_change
      -> change_frame_size
        -> change_frame_size_1
          -> set_window_height
            -> size_window
              -> delete_window (/* Delete WINDOW if it's too small.  */)

                                     YAMAMOTO Mitsuharu
                                address@hidden





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