A simple question

[David A. Moon <Moon@STONY-BROOK.SCRC.Symbolics.COM>]

    Date: 23 Apr 1987 13:42:18 EST (Thu)
    From: Russ Smith <smith@nrl-aic.ARPA>

    The "Cc"ed individual above uncovered an interesting difference between
    interpreted and compiled CommonLisp on a Sun workstation that generated
    a splurge of conversation here. In particular:

	    (null (null '(a b c))

    returns T when interpreted, but returns (a b c) when compiled.

My question for you:  Does (not (null '(a b c)) do the same thing in the
same implementation, or does it always return T?