*/
    @CheckForNull private AvlNode<E> pred;
    @CheckForNull private AvlNode<E> succ;

    AvlNode(@ParametricNullness E elem, int elemCount) {
      checkArgument(elemCount > 0);
      this.elem = elem;
      this.elemCount = elemCount;
      this.totalCount = elemCount;
      this.distinctElements = 1;
      this.height = 1;
      this.left = null;

		if !types.Identical(rcvr, tt) {
			if rcvr.IsPtr() && types.Identical(rcvr.Elem(), tt) {
				checklvalue(n.X, "call pointer method on")
				addr := NodAddr(n.X)
				addr.SetImplicit(true)
				n.X = typecheck(addr, ctxType|ctxExpr)
			} else if tt.IsPtr() && (!rcvr.IsPtr() || rcvr.IsPtr() && rcvr.Elem().NotInHeap()) && types.Identical(tt.Elem(), rcvr) {
				star := ir.NewStarExpr(base.Pos, n.X)
				star.SetImplicit(true)

			}

			appendToFieldValues := func(ev reflect.Value) {
				if ev.Type().AssignableTo(elemType) {
					fieldValue = reflect.Append(fieldValue, ev)
				} else if ev.Type().Elem().AssignableTo(elemType) {
					fieldValue = reflect.Append(fieldValue, ev.Elem())
				} else {
					association.Error = fmt.Errorf("unsupported data type: %v for relation %s", ev.Type(), association.Relationship.Name)
				}

			check.errorf(x, InvalidCopy, invalidArg+"copy expects slice arguments; found %s and %s", x, y)
			return
		}

		if !Identical(dst.elem, src.elem) {
			check.errorf(x, InvalidCopy, invalidArg+"arguments to copy %s and %s have different element types %s and %s", x, y, dst.elem, src.elem)
			return
		}

		if check.recordTypes() {
			check.recordBuiltinType(call.Fun, makeSig(Typ[Int], x.typ, y.typ))
		}
		x.mode = value

	}()

	switch t := typ.(type) {
	case *Basic:
		// nothing to do

	case *Alias:
		return w.isParameterized(Unalias(t))

	case *Array:
		return w.isParameterized(t.elem)

	case *Slice:
		return w.isParameterized(t.elem)

	case *Struct:
		return w.varList(t.fields)

	case *Pointer:
		return w.isParameterized(t.base)

	case *Tuple:

func parseSymbol(str string) (symbol, method string) {
	if str == "" {
		return
	}
	elem := strings.Split(str, ".")
	switch len(elem) {
	case 1:
	case 2:
		method = elem[1]
	default:
		log.Printf("too many periods in symbol specification")
		usage()
	}
	symbol = elem[0]
	return
}

// isExported reports whether the name is an exported identifier.

		} else {
			base.Errorf("second argument to copy should be slice or string; have %L", n.Y.Type())
		}
		n.SetType(nil)
		return n
	}

	if !types.Identical(n.X.Type().Elem(), n.Y.Type().Elem()) {
		base.Errorf("arguments to copy have different element types: %L and %L", n.X.Type(), n.Y.Type())
		n.SetType(nil)
		return n
	}
	return n
}

// tcDelete typechecks an ODELETE node.

			check.errorf(x, InvalidCopy, invalidArg+"copy expects slice arguments; found %s and %s", x, y)
			return
		}

		if !Identical(dst.elem, src.elem) {
			check.errorf(x, InvalidCopy, invalidArg+"arguments to copy %s and %s have different element types %s and %s", x, y, dst.elem, src.elem)
			return
		}

		if check.recordTypes() {
			check.recordBuiltinType(call.Fun, makeSig(Typ[Int], x.typ, y.typ))
		}
		x.mode = value

func (v Value) CanSet() bool {
	return v.flag&(flagAddr|flagRO) == flagAddr
}

// Elem returns the value that the interface v contains
// or that the pointer v points to.
// It panics if v's Kind is not Interface or Pointer.
// It returns the zero Value if v is nil.
func (v Value) Elem() Value {
	k := v.kind()
	switch k {
	case abi.Interface:
		var eface any
		if v.typ().NumMethod() == 0 {

			// assume they are the same to avoid spurious follow-on errors.
			return (x.len < 0 || y.len < 0 || x.len == y.len) && u.nify(x.elem, y.elem, emode, p)
		}

	case *Slice:
		// Two slice types unify if their element types unify.
		if y, ok := y.(*Slice); ok {
			return u.nify(x.elem, y.elem, emode, p)
		}

	case *Struct:
		// Two struct types unify if they have the same sequence of fields,