That function has no side effects (aside from taking a long time and a lot of memory) and it returns nothing. The following equivalent function is a lot faster: 
sub DoIt {
  return;
}

[download]

If this is not what you want you'll have to explain what you want in a bit more detail.

"What should it profit a man, if he should win a flame war, yet lose his cool?"

In reply to Re: Garbage collection at subroutine return by Joost
in thread Garbage collection at subroutine return by tcarmeli

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