arithmetic-error division-by-zero floating-point-inexact floating-point-invalid-operation floating-point-overflow floating-point-underflow condition error serious-condition simple-condition simple-error simple-warning style-warning warning cell-error control-error end-of-file file-error package-error parse-error print-not-readable program-error reader-error simple-type-error storage-condition stream-error type-error unbound-slot unbound-variable undefined-function