in reply to $_ Memory Leak

The usage of $_ generally doesn't raise any problems. But, as always, that depends on the context - which you don't give. You might want to re-read this answer to a previous post of yours.

--shmem 

_($_=" "x(1<<5)."?\n".q·/)Oo.  G°\        /
                              /\_¯/(q    /
----------------------------  \__(m.====·.(_("always off the crowd"))."·
");sub _{s./.($e="'Itrs `mnsgdq Gdbj O`qkdq")=~y/"-y/#-z/;$e.e && print}

In Section Seekers of Perl Wisdom