From my limited experience from security, everything that has a potential to behave differently than expected is considered a security issue. After the original node issue was published, I can imagine lots of people and robots trying entering dangerous IPs everywhere just to see what happens.
map{substr$_->[0],$_->[1]||0,1}[\*||{},3],[[]],[ref qr-1,-,-1],[{}],[sub{}^*ARGV,3]