> I'm familiar with (and greatly appreciate!) the guarantees regarding
> overflow for ordinary integer arithmetic in the Go spec

Which guarantees?

> but I've been
> unable to locate anything that reassures me that similar guarantees apply
> for the sync/atomic.Add* functions. Is there any official statement anywhere
> on this subject?

The documentation says "adds delta to *addr" so I think it's safe to
assume the same arithmetic semantics as +.

-Caleb

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