+;;;; miscellaneous old bugs
+
+(defstruct ya-struct)
+(when (ignore-errors (or (ya-struct-p) 12))
+ (error "YA-STRUCT-P of no arguments should signal an error."))
+(when (ignore-errors (or (ya-struct-p 'too 'many 'arguments) 12))
+ (error "YA-STRUCT-P of three arguments should signal an error."))
+\f