Thanks for the clarification! What if instead of the sender goroutine setting the pointer to nil, the GC frees the object that the pointer was pointing to before the recipient goroutine reads it? Wouldn't that be considered "reading from a pointer that has already been freed"?
That can't happen. The GC won't free the object until nothing references it, and in your proposed scenario either the channel or receiving goroutine will have a valid reference.
