Error in vectors.lsp about lisp-koans HOT 3 CLOSED

I wonder if they meant the line to read

(assert-equal ____ (make-array '4 :element-type 'bit :initial-contents '(0 0 1 1)))

This would make it easier to figure out the answer to list-to-bit-vector part.

from lisp-koans.

Same here.
Should be #*0000

from lisp-koans.

This test invokes undefined behaviour.

CLHS MAKE-ARRAY states:

If initial-element is not supplied, the consequences of later reading an uninitialized element of new-array are undefined unless either initial-contents is supplied or displaced-to is non-nil.

Therefore, (make-array '4 :element-type 'bit) is not guaranteed to return #*0000. According to the standard, it is allowed to return #*1111 as well, as well as any 4-bit combination.

from lisp-koans.