Re: Emacs crashes

[Richard Stallman]

     > A simple list of values recorded in last_marked[] won't do.  You need
     > to correlate it with the innermost frames you see in the backtrace,
     > and from that correlation figure out the name of the Lisp data
     > structure that is being marked.  The connection between the values
     > recorded in last_marked[] will be revealed if you look at the code,
     > because, e.g., when GC finds a cons, it recursively marks its car and
     > its cdr.  By looking at the code, you should be able to find this and
     > other similar connections between the values, like A being a property
     > of B etc.

    OK, this tells me more than I could find in DEBUG. 

Could you add some of that to DEBUG?