What am I doing wrong here?

You're assuming its the same hash , print out the reference and you'll see that its different,  warn \%TrappedPIDs;

But I'm guessing as you don't show the forking part

:)Mr. Peabody Explains fork()

In reply to Re: hash elements are lost during reaping by Anonymous Monk
in thread hash elements are lost during reaping by umitd

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