Lazy error signaling?

[Patrick Dussud <dussud@lucid.com>]

   Date: Mon, 14 May 90 17:59:36 EDT
   From: kab@charon.MIT.EDU (Kim A. Barrett)


   Regarding precomputing of combined methods and METHOD-COMBINATION-ERROR, this
   only works if the place doing the precomputing knows how to detect and
   gracefully handle a corresponding call to METHOD-COMBINATION-ERROR.  Since we
   didn't specify much about the behavior of METHOD-COMBINATION-ERROR, this is
   currently impossible in portable code.  Of course, it's not clear that
   precomputing methods can be done for any useful purpose without a metaobject
   proposal anyway.
					   kab

I was thinking of the cases where the implementation does effective method
precomputing. For these cases the code does not have to be portable.