BEGIN {
    $SIG{__WARN__}=sub { print "WARNING: $_[0] \n" };
}

$|=1;

sub fn1($);
fn1("output1");
sub fn1 (\@) {
    print while $_ = shift;
}


sub fn2($);
fn2("output2");
sub fn2 (\@) {
    print $_,$/ for @_;
}