$ perl -MO=Deparse -e"while(<>){'???'}"
------------------------------------
LINE: while (defined($_ = <ARGV>)) {
    '???';
}

##</code><code>##

$ perl -MO=Deparse -p -e"???"
------------------------------------
LINE: while (defined($_ = <ARGV>)) {
    '???';
}
continue {
    print $_;
}