return -1, false
		}
		isconst = true
		if s[0] == 'v' {
			isconst = false
			s = s[1:]
		}
		n, _ = strconv.Atoi(s)
		return n, isconst
	}

	const Cap = 10 // cap of slice, array

	for _, base := range []string{"array", "slice"} {
		for _, i := range index {
			iv, iconst := parse(i)
			for _, j := range index {
				jv, jconst := parse(j)
				for _, k := range index {
					kv, kconst := parse(k)

}

func slice2() []*int {
	var s []*int
	i := 0 // ERROR "moved to heap: i"
	s = append(s, &i)
	return s
}

func slice3() *int {
	var s []*int
	i := 0 // ERROR "moved to heap: i"
	s = append(s, &i)
	for _, p := range s {
		return p
	}
	return nil
}

func slice4(s []*int) { // ERROR "s does not escape"
	i := 0 // ERROR "moved to heap: i"
	s[0] = &i
}

		if x.mode != variable {
			check.errorf(x, NonSliceableOperand, invalidOp+"cannot slice %s (value not addressable)", x)
			x.mode = invalid
			return
		}
		x.typ = &Slice{elem: u.elem}

	case *Pointer:
		if u, _ := under(u.base).(*Array); u != nil {
			valid = true
			length = u.len
			x.typ = &Slice{elem: u.elem}
		}

	case *Slice:
		valid = true
		// x.typ doesn't change
	}

	if !valid {

}

func TestUpsertSlice(t *testing.T) {
	langs := []Language{
		{Code: "upsert-slice1", Name: "Upsert-slice1"},
		{Code: "upsert-slice2", Name: "Upsert-slice2"},
		{Code: "upsert-slice3", Name: "Upsert-slice3"},
	}
	DB.Clauses(clause.OnConflict{DoNothing: true}).Create(&langs)

	var langs2 []Language
	if err := DB.Find(&langs2, "code LIKE ?", "upsert-slice%").Error; err != nil {

	case *ast.SliceExpr:
		WriteExpr(buf, x.X)
		buf.WriteByte('[')
		if x.Low != nil {
			WriteExpr(buf, x.Low)
		}
		buf.WriteByte(':')
		if x.High != nil {
			WriteExpr(buf, x.High)
		}
		if x.Slice3 {
			buf.WriteByte(':')
			if x.Max != nil {
				WriteExpr(buf, x.Max)
			}
		}
		buf.WriteByte(']')

	case *ast.TypeAssertExpr:
		WriteExpr(buf, x.X)
		buf.WriteString(".(")
		WriteExpr(buf, x.Type)

	}
	if !DeepEqual(v[0:4], xs[3:7:7]) {
		t.Errorf("xs.Slice3(3, 5, 7)[0:4] = %v", v[0:4])
	}
	rv := ValueOf(&xs).Elem()
	shouldPanic("Slice3", func() { rv.Slice3(1, 2, 1) })
	shouldPanic("Slice3", func() { rv.Slice3(1, 1, 11) })
	shouldPanic("Slice3", func() { rv.Slice3(2, 2, 1) })

	xa := [8]int{10, 20, 30, 40, 50, 60, 70, 80}
	v = ValueOf(&xa).Elem().Slice3(2, 5, 6).Interface().([]int)

func slice1(x []byte) []byte { // ERROR "leaking param: x$"
	v := reflect.ValueOf(x) // ERROR "x escapes to heap"
	return v.Slice(1, 2).Bytes()
}

// Unfortunate: x doesn't need to escape to heap, just to result.
func slice2(x string) string { // ERROR "leaking param: x$"
	v := reflect.ValueOf(x) // ERROR "x escapes to heap"
	return v.Slice(1, 2).String()
}

	if ncolons > 0 {
		// slice expression
		slice3 := false
		if ncolons == 2 {
			slice3 = true
			// Check presence of middle and final index here rather than during type-checking
			// to prevent erroneous programs from passing through gofmt (was go.dev/issue/7305).
			if index[1] == nil {
				p.error(colons[0], "middle index required in 3-index slice")

		}
	}
	return item, nil
}

// Slicing.

// slice returns the result of slicing its first argument by the remaining
// arguments. Thus "slice x 1 2" is, in Go syntax, x[1:2], while "slice x"
// is x[:], "slice x 1" is x[1:], and "slice x 1 2 3" is x[1:2:3]. The first
// argument must be a string, slice, or array.
func slice(item reflect.Value, indexes ...reflect.Value) (reflect.Value, error) {

}

// Slice3 is the 3-index form of the slice operation: it returns v[i:j:k].
// It panics if v's Kind is not [Array] or [Slice], or if v is an unaddressable array,
// or if the indexes are out of bounds.
func (v Value) Slice3(i, j, k int) Value {
	var (
		cap  int
		typ  *sliceType
		base unsafe.Pointer
	)
	switch kind := v.kind(); kind {
	default:
		panic(&ValueError{"reflect.Value.Slice3", v.kind()})