cp/parse.y:2120: invalid value: $3

[David S. Miller]

   From: Paul Eggert <eggert@twinsun.com>
   Date: Mon, 29 Apr 2002 13:19:56 -0700 (PDT)
   
   It's wrong because there is no $3 at that point.  The mid-rule action
   follows the 2nd nonterminal on the right hand side, so there is only a
   $1 and a $2 at that point.

This was a recent thread about all this recently starting
at:

	http://gcc.gnu.org/ml/gcc-bugs/2002-04/msg01309.html

I would suggest that everyone here takes a quick read there
as Jakub Jelinek explains why the code there right now is
how it is.