POSIX::WNOHANG redefined

I'm using a child handler which I've used elsewhere on various
systems, but currently I am getting this message:

POSIX::WNOHANG redefined

my handler is as follows:

sub childhandler {

while((my $retv = waitpid( -1, &POSIX::WNOHANG() ))>0) {
$wait_pid[$wait_index] = $retv;
$wait_index++;
}
$SIG{CHLD} = \&childhandler;
}


I've tried this various ways:

waitpid( -1, &POSIX::WNOHANG)
waitpid( -1, &WNOHANG)
waitpid( -1,WNOHANG)

I've always used the latter without any trouble.

Thanks,

Myron Turner
.