test.go

package main

type S struct {
	Inner int
}

func main() {
	foo()
}

func foo() {
	ch := make(chan *S, 256)
	go bar(ch)
	for {
		s := &S{Inner: 1}
		ch <- s
		(*s).Inner = 2
	}
}

func bar(ch chan *S) {
	for s := range ch {
		s := s
		println(s.Inner)
	}
}