// barrier requires both to have barriers.
	x.f = f17                      // ERROR "write barrier"
	x.f = func(y *T17) { *y = *x } // ERROR "write barrier"
}

type T18 struct {
	a []int
	s string
}

func f18(p *T18, x *[]int) {
	p.a = p.a[:5]    // no barrier
	*x = (*x)[0:5]   // no barrier
	p.a = p.a[3:5]   // ERROR "write barrier"
	p.a = p.a[1:2:3] // ERROR "write barrier"

            }
            val t17: TaskProvider<Copy> = tasks.named<Copy>("pipistrelle") {
                description += "C"
                destinationDir = file("out")
            }

            val t18: TaskProvider<Task> = tasks.register("yate")
            val t19: TaskProvider<Copy> = tasks.register("quartern", Copy::class)
            val t20: TaskProvider<Copy> = tasks.register<Copy>("veduta")

			Valu("t15", OpCeil, c.config.Types.Float64, 0, nil, "t14"),
			Valu("t16", OpTrunc, c.config.Types.Float64, 0, nil, "t15"),
			Valu("t17", OpRoundToEven, c.config.Types.Float64, 0, nil, "t16"),
			Valu("t18", OpTrunc64to32, c.config.Types.Int64, 0, nil, "t12"),
			Valu("t19", OpCvt64Fto64, c.config.Types.Float64, 0, nil, "t17"),
			Valu("t20", OpCtz64, c.config.Types.Int64, 0, nil, "v2"),

	t12 complex64 = -(u + *t11) / *&v
	t13 int = a /* ERROR "shifted operand" */ << d
	t14 int = i << j
	t15 math /* ERROR "math is not a type" */
	t16 math.xxx /* ERROR "undefined" */
	t17 math /* ERROR "not a type" */ .Pi
	t18 float64 = math.Pi * 10.0
	t19 int = t1 /* ERROR "cannot call" */ ()
	t20 int = f0 /* ERROR "no value" */ ()
	t21 int = a /* ERRORx `cannot use .* variable declaration` */
)

// Various more complex expressions
var (