(%reader-error stream "non-list following #S: ~S" body))
(unless (symbolp (car body))
(%reader-error stream "Structure type is not a symbol: ~S" (car body)))
(%reader-error stream "non-list following #S: ~S" body))
(unless (symbolp (car body))
(%reader-error stream "Structure type is not a symbol: ~S" (car body)))