ch := make(chan bool, 1)
	var a [5]int
	go func() {
		a[3] = 1
		ch <- true
	}()
	a = [5]int{1, 2, 3, 4, 5}
	<-ch
}

// Blows up a naive compiler.
func TestRaceNestedArrayCopy(t *testing.T) {
	ch := make(chan bool, 1)
	type (
		Point32   [2][2][2][2][2]Point
		Point1024 [2][2][2][2][2]Point32
		Point32k  [2][2][2][2][2]Point1024
		Point1M   [2][2][2][2][2]Point32k
	)