func add(args ...int) int {
	sum := 0
	for _, x := range args {
		sum += x
	}
	return sum
}

func echo(arg any) any {
	return arg
}

func makemap(arg ...string) map[string]string {
	if len(arg)%2 != 0 {
		panic("bad makemap")
	}
	m := make(map[string]string)
	for i := 0; i < len(arg); i += 2 {
		m[arg[i]] = arg[i+1]
	}
	return m
}

func stringer(s fmt.Stringer) string {

					hash := t.Hasher(k, uintptr(h.hash0))
					if hash&newbit != 0 {
						useY = 1
					}
				}

				b.tophash[i] = evacuatedX + useY // evacuatedX + 1 == evacuatedY, enforced in makemap
				dst := &xy[useY]                 // evacuation destination

				if dst.i == abi.MapBucketCount {
					dst.b = h.newoverflow(t, dst.b)
					dst.i = 0
					dst.k = add(unsafe.Pointer(dst.b), dataOffset)

					hash := t.Hasher(k, uintptr(h.hash0))
					if hash&newbit != 0 {
						useY = 1
					}
				}

				b.tophash[i] = evacuatedX + useY // evacuatedX + 1 == evacuatedY, enforced in makemap
				dst := &xy[useY]                 // evacuation destination

				if dst.i == abi.MapBucketCount {
					dst.b = h.newoverflow(t, dst.b)
					dst.i = 0
					dst.k = add(unsafe.Pointer(dst.b), dataOffset)

					hash := t.Hasher(k, uintptr(h.hash0))
					if hash&newbit != 0 {
						useY = 1
					}
				}

				b.tophash[i] = evacuatedX + useY // evacuatedX + 1 == evacuatedY, enforced in makemap
				dst := &xy[useY]                 // evacuation destination

				if dst.i == abi.MapBucketCount {
					dst.b = h.newoverflow(t, dst.b)
					dst.i = 0
					dst.k = add(unsafe.Pointer(dst.b), dataOffset)

		panic("reflect.MakeChan: unidirectional channel type")
	}
	t := typ.common()
	ch := makechan(t, buffer)
	return Value{t, ch, flag(Chan)}
}

// MakeMap creates a new map with the specified type.
func MakeMap(typ Type) Value {
	return MakeMapWithSize(typ, 0)
}

// MakeMapWithSize creates a new map with the specified type
// and initial space for approximately n elements.

		n := n.(*ir.BinaryExpr)
		if n.Y.Op() != ir.OLITERAL || constant.Sign(n.Y.Val()) == 0 {
			return true
		}

	// Only possible side effect is panic on invalid size,
	// but many makechan and makemap use size zero, which is definitely OK.
	case ir.OMAKECHAN, ir.OMAKEMAP:
		n := n.(*ir.MakeExpr)
		if !ir.IsConst(n.Len, constant.Int) || constant.Sign(n.Len.Val()) != 0 {
			return true
		}

				d.saveError(&UnmarshalTypeError{Value: "object", Type: t, Offset: int64(d.off)})
				d.skip()
				return nil
			}
		}
		if v.IsNil() {
			v.Set(reflect.MakeMap(t))
		}
	case reflect.Struct:
		fields = cachedTypeFields(t)
		// ok
	default:
		d.saveError(&UnmarshalTypeError{Value: "object", Type: t, Offset: int64(d.off)})
		d.skip()
		return nil
	}

    private final AtomicInteger counter = new AtomicInteger(0);
    private final ConcurrentMap<Object, Integer> uids =
        Platform.tryWeakKeys(new MapMaker()).makeMap();

    private Integer getUid(Object obj) {
      Integer uid = uids.get(obj);
      if (uid == null) {
        // One or more integer values could be skipped in the event of a race

    private final AtomicInteger counter = new AtomicInteger(0);
    private final ConcurrentMap<Object, Integer> uids =
        Platform.tryWeakKeys(new MapMaker()).makeMap();

    private Integer getUid(Object obj) {
      Integer uid = uids.get(obj);
      if (uid == null) {
        // One or more integer values could be skipped in the event of a race

func TestMap(t *testing.T) {
	m := map[string]int{"a": 1, "b": 2}
	mv := ValueOf(m)
	if n := mv.Len(); n != len(m) {
		t.Errorf("Len = %d, want %d", n, len(m))
	}
	keys := mv.MapKeys()
	newmap := MakeMap(mv.Type())
	for k, v := range m {
		// Check that returned Keys match keys in range.
		// These aren't required to be in the same order.
		seen := false
		for _, kv := range keys {
			if kv.String() == k {