P:\>perl58 -we"my $x,$y, $z;"
Parentheses missing around "my" list at -e line 1.
Useless use of a variable in void context at -e line 1.
Useless use of a variable in void context at -e line 1.
Name "main::y" used only once: possible typo at -e line 1.
Name "main::z" used only once: possible typo at -e line 1.