[go-nuts] Problem with append()

Maybe I don't understand the problem correctly, but if buf_1 does not have enough capacity for data, then the slice returned by append will be different than the one you wanted to append to - although the new slice contains the olds data, too.

Thus you need to push the actual value to buf_1 and buf_2 back to the global vars.

If you do this from different goroutines, then some guard is needed for global var update.