It could theoretically come in handy as part of a test suite for a distribution that must track handles (because it maintains several at any given time), to ensure none accidentally leak during a run.
My File::Edit::Portable came to mind immediately. Although there's thorough coverage already, it's one place something like this would be quite useful.
In reply to Re^3: Track open file handles
by stevieb
in thread Track open file handles
by shmem
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