Lyrics independent of notes

[Ralph Little]

Hi,
The example in the 2.11.32 manual "7.3.5.4 Lyrics independent of notes" 
generates a load of warnings. Has this always been so?

Example:

testlyrics.ly:8:34: warning: Lyric syllable does not have note. Use 
\lyricsto or associatedVoice.
    lyr = \lyricmode { I like my cat! }

...even though the example follows a DevNull voice created for it with 
\lyricsto.
The output otherwise seems OK.

Regards,
Ralph