|  | // Copyright (c) 2019, the Dart project authors.  Please see the AUTHORS file | 
|  | // for details. All rights reserved. Use of this source code is governed by a | 
|  | // BSD-style license that can be found in the LICENSE file. | 
|  |  | 
|  | import 'dart:async'; | 
|  | import 'package:expect/expect.dart'; | 
|  |  | 
|  | FutureOr<dynamic> x = 'abc'; | 
|  | dynamic y = 'abc'; | 
|  |  | 
|  | void smi() { | 
|  | x = 42; | 
|  | y = 42; | 
|  | } | 
|  |  | 
|  | void mint() { | 
|  | x = 0x7fffffff00000000; | 
|  | y = 0x7fffffff00000000; | 
|  | } | 
|  |  | 
|  | void dbl() { | 
|  | x = 1.0; | 
|  | y = 1.0; | 
|  | } | 
|  |  | 
|  | void main() { | 
|  | smi(); | 
|  | Expect.isTrue(identical(x, y)); | 
|  | mint(); | 
|  | Expect.isTrue(identical(x, y)); | 
|  | dbl(); | 
|  | Expect.isTrue(identical(x, y)); | 
|  | } |