redisplay crash problem

Once in a blue moon (really meaning once or twice a year), I get a crash in redisplay. This happens when redisplay_window is calling marker_position, and passing it a marker with a null buffer field. Unfortunately, more detailed information, such as which line in redisplay_window(), doesn't seem to survive the optimizing compiler (and I don't really want to run my everyday emacs unoptimized, even these days). I'm not aware of having touched anything in this area of code (my fork is off 21.4.22). It seems to happen only when I shut down a client window (I use an emacs-server based setup), but I have no idea what the key feature is, and I certainly can't reproduce it on demand. Has anybody ever seen anything like this in 21.4? _______________________________________________ XEmacs-Beta mailing list XEmacs-Beta(a)xemacs.org http://lists.xemacs.org/mailman/listinfo/xemacs-beta