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o LOGAND-DERIVE-TYPE-AUX was deriving the result to be too wide for
(defun foo (x) (declare (type unsigned-byte x)) (logand x #xff)) It was returning unsigned-byte when the result should have a bounded type like (unsigned-byte 8). o Small optimization for %ldb deftransform: If the byte positiion is known to be 0, don't transform to (ash int 0), but just replace it with int.
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