func close2() {
	f1 := func() (ch chan int) { return }
	f2 := func() (ch chan int, x int) { return }
	close(f0 /* ERROR "used as value" */ ())
	close(f1())
	close(f2()) // ERROR "too many arguments"
}

func complex1() {
	var i32 int32
	var f32 float32
	var f64 float64
	var c64 complex64
	var c128 complex128
	_ = complex() // ERROR "not enough arguments"
	_ = complex(1) // ERROR "not enough arguments"