// CHECK: "tf.AssignVariableOp"(%[[BUFFER]], %[[UPDATE]])
    // CHECK: "tf.AssignVariableOp"(%[[SIZE]]
     %push = "tf.StackPushV2"(%stack, %elem) {swap_memory = false} : (tensor<!tf_type.resource>, tensor<f32>) -> tensor<f32>
    "tf.Yield"(%elem) : (tensor<f32>) -> ()
  }, {
    %elem = "tf._SomeOtherOp"() : () -> tensor<f32>
    // CHECK-NOT: tf.StackPushV2
    // CHECK: %[[BUFFER_VAL:.*]] = "tf.ReadVariableOp"(%[[BUFFER]])

func (mapError) Error() string { return "mapError" }

var _ error = mapError{}
var _ error = new(mapError)

func TestImplements(t *testing.T) {
	for _, tt := range implementsTests {
		xv := TypeOf(tt.x).Elem()
		xt := TypeOf(tt.t).Elem()
		if b := xv.Implements(xt); b != tt.b {
			t.Errorf("(%s).Implements(%s) = %v, want %v", TypeString(xv), TypeString(xt), b, tt.b)
		}
	}
}

var assignableTests = []struct {
	x any
	t any

// allocated temporary variable of type [len]elem. This variable is
// initialized, and elem must not contain pointers.
func stackBufAddr(len int64, elem *types.Type) *ir.AddrExpr {
	if elem.HasPointers() {
		base.FatalfAt(base.Pos, "%v has pointers", elem)
	}
	tmp := typecheck.TempAt(base.Pos, ir.CurFunc, types.NewArray(elem, len))
	return typecheck.Expr(typecheck.NodAddr(tmp)).(*ir.AddrExpr)

			case *Array:
				l = t.len
				e = t.elem
				if x.mode != variable {
					mode = value
				}
			case *Pointer:
				if t, _ := under(t.base).(*Array); t != nil {
					l = t.len
					e = t.elem
				}
			case *Slice:
				e = t.elem
			case *Map:
				k = t.key
				e = t.elem
			}
			if e == nil {
				return false
			}
			if elem == nil {
				// first type
				length = l

		if nn := arrayRangeClear(nrange, v1, v2, a); nn != nil {
			base.Pos = lno
			return nn
		}

		// Element type of the iteration
		var elem *types.Type
		switch t.Kind() {
		case types.TSLICE, types.TARRAY:
			elem = t.Elem()
		case types.TPTR:
			elem = t.Elem().Elem()
		}

		// order.stmt arranged for a copy of the array/slice variable if needed.
		ha := a

func TestLookupPtrToStruct(t *testing.T) {
	type Elem struct {
		Key   string
		Value string
	}
	type Outer struct {
		Inner []Elem `json:"inner" patchStrategy:"merge" patchMergeKey:"key"`
	}
	outer := &Outer{}
	elemType, patchStrategies, patchMergeKey, err := LookupPatchMetadataForStruct(reflect.TypeOf(outer), "inner")
	if err != nil {
		t.Fatal(err)
	}
	if elemType != reflect.TypeOf([]Elem{}) {

			v.Elem().Set(elem)
		}
	case reflect.Slice:
		numElems := rand.Intn(size)
		sizeLeft := size - numElems
		v.Set(reflect.MakeSlice(concrete, numElems, numElems))
		for i := 0; i < numElems; i++ {
			elem, ok := sizedValue(concrete.Elem(), rand, sizeLeft)
			if !ok {
				return reflect.Value{}, false
			}
			v.Index(i).Set(elem)
		}
	case reflect.Array:
		for i := 0; i < v.Len(); i++ {

				return nil
			}

			want := true
			elem := ""

			// Don't use GOROOT/src but do walk down into it.
			if pkgDir == root {
				if importPathRoot == "" {
					return nil
				}
			} else {
				// Avoid .foo, _foo, and testdata subdirectory trees.
				_, elem = filepath.Split(pkgDir)
				if strings.HasPrefix(elem, ".") || strings.HasPrefix(elem, "_") || elem == "testdata" {
					want = false
				}
			}

	ch := make(chan bool, 1)
	i := 0
	v := reflect.ValueOf(&i)
	go func() {
		v.Elem().Set(reflect.ValueOf(1))
		ch <- true
	}()
	_ = v.Elem().Int()
	<-ch
}

func TestRaceReflectWW(t *testing.T) {
	ch := make(chan bool, 1)
	i := 0
	v := reflect.ValueOf(&i)
	go func() {
		v.Elem().Set(reflect.ValueOf(1))
		ch <- true
	}()
	v.Elem().Set(reflect.ValueOf(2))
	<-ch
}

func TestRaceReflectCopyWW(t *testing.T) {

  size_t offset = 0;
  for (auto const& e : v) {
    Tensor elem = e.tensor;
    if (first.tensor.dtype() == DT_STRING) {
      for (int i = 0; i < elem.NumElements(); ++i) {
        t.flat<tstring>()(offset + i) = elem.flat<tstring>()(i);
      }
      offset += elem.NumElements();
    } else {
      std::copy_n(elem.tensor_data().data(), elem.TotalBytes(),
                  const_cast<char*>(t.tensor_data().data()) + offset);