-Wignored-returns?

[David E. Weekly]

GCC Team,

Hello! I saw in the GCC Bug mail archives a post that a certain Gray Watson
had proposed in 1992 for warning on ignored return values:
http://www.geocrawler.com/mail/msg.php3?msg_id=1968564&list=356. Such a
warning flag would prove invaluable for myself and for others seeking to
wholly replace lint with GCC warning flags and seems trivial to implement.
Is this feature already in GCC or has it yet to be added?

Yours,
 -david