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From: "Richard M. Stallman" <rms@gnu.org>
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Subject: Re: Problem with large buffers
Date: Fri, 22 Jul 2005 18:51:32 -0400
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    Emacs highlights the first "world!" that is about to replace, then in
    the echo area I see:

      "Error in menu-bar-update-hook: (error Variable binding depth exceeds
       max-specpdl-size)"

Can you provide a precise way to reproduce this problem?
Once able to reproduce it, I think we could fix it quickly.

You could also try putting a breakpoint at this call to Fsignal

  if (specpdl_size >= max_specpdl_size)
    {
      if (max_specpdl_size < 400)
	max_specpdl_size = 400;
      if (specpdl_size >= max_specpdl_size)
	Fsignal (Qerror,
		 Fcons (build_string ("Variable binding depth exceeds max-specpdl-size"), Qnil));
    }
You could then use the GDB commands backtrace and xbacktrace,
and send us the output.