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Structure Glitch, Retransmitted.
KCL does not do vigerous type checking in interpreted mode
for structure references.
(defstruct x a b)
(defstruct y c d)
(Setf xx (make-x))
(y-c xx) => Nil, not an error.
(y-c 13) => an error, correct.
This caused me some pain recently and I suspect that
it could be a disaster if structure components are
given and explicit type, eg. Char.
PS. re transmitted because of message that CLI was sick.