Modifying constructor for reserr structures.
(change-reserr x [:info <info>])
This is an often useful alternative to make-reserr.
We construct a new reserr structure that is a copy of
This is an ordinary
Macro:
(defmacro change-reserr (x &rest args) (std::change-aggregate 'reserr x args '((:info . reserr->info)) 'change-reserr 'nil))