}
	}
}

type T11 T10

type T12 struct {
	F1 *T15
	F2 *T13
	F3 *T16
}

type T13 T14
type T14 T15
type T15 T16
type T16 T17
type T17 T12

// issue 1672
type T18 *[10]T19
type T19 T18

func main() {
	_ = &T1{&T2{}}
	_ = &T2{&T2{}}
	_ = &T3{&T4{}}
	_ = &T4{&T4{}}
	_ = &T5{&T4{}}
	_ = &T6{&T4{}}
	_ = &T7{&T4{}}
	_ = &T8{&T4{}}
	_ = &T9{&T4{}}

// Disallow them for now.

package p

type t int

type (
	t00 t; t01 t; t02 t; t03 t; t04 t; t05 t; t06 t; t07 t; t08 t; t09 t
	t10 t; t11 t; t12 t; t13 t; t14 t; t15 t; t16 t; t17 t; t18 t; t19 t
	t20 t; t21 t; t22 t; t23 t; t24 t; t25 t; t26 t; t27 t; t28 t; t29 t
	t30 t; t31 t; t32 t; t33 t; t34 t; t35 t; t36 t; t37 t; t38 t; t39 t
	t40 t; t41 t; t42 t; t43 t; t44 t; t45 t; t46 t; t47 t; t48 t; t49 t

        // T14 interface { T13; T13 }
        // T15 interface { T14; T14 }
        // T16 interface { T15; T15 }
        // T17 interface { T16; T16 }
        // T18 interface { T17; T17 }
        // T19 interface { T18; T18 }

        // T20 interface { T19; T19 }
        // T21 interface { T20; T20 }
        // T22 interface { T21; T21 }
        // T23 interface { T22; T22 }

	}
	T11 map[int]string
	T12 any
	T13 interface {
		m1()
		m2(int) float32
	}
	T14 interface {
		T12
		T13
		m3(x ...struct{}) []T9
	}
	T15 func()
	T16 func(int)
	T17 func(x int)
	T18 func() float32
	T19 func() (x float32)
	T20 func(...any)
	T21 struct{ next *T21 }
	T22 struct{ link *T23 }
	T23 struct{ link *T22 }
	T24 *T24
	T25 *T26
	T26 *T27
	T27 *T25
	T28 func(T28) T28
)

	// 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"

			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 (