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runtime: mcentral.freeSpan bug for empty? #34316
What version of Go are you using (
It seems that you are just asking a question, not reporting a bug. We don't use the issue tracker for discussions (see https://golang.org/wiki/Questions). This particular topic should be discussed on email@example.com. Thanks.
I believe the answer to this question is that the code is preserving invariants for the concurrent garbage collector.