issue12664 = "bye"
		close(c)
	}()
	fmt.Println(issue12664)
	<-c
}

type MyI interface {
	foo()
}

type MyT int

func (MyT) foo() {
}

var issue12664_2 MyT = 0

func TestRaceIssue12664_2(t *testing.T) {
	c := make(chan struct{})
	go func() {
		issue12664_2 = 1
		close(c)
	}()
	func(x MyI) {
		// Never true, but prevents inlining.
		if x.(MyT) == -1 {
			close(c)
		}