|  | // Copyright (c) 2016, 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 'package:expect/expect.dart'; | 
|  |  | 
|  | class A { | 
|  | final a; | 
|  |  | 
|  | const A(this.a); | 
|  | } | 
|  |  | 
|  | class B extends A { | 
|  | final b; | 
|  |  | 
|  | const B(a, this.b) : super(a); | 
|  | } | 
|  |  | 
|  | @NoInline() | 
|  | foo() => const B(1, 2); | 
|  |  | 
|  | @NoInline() | 
|  | bar() => const B(2, 2); | 
|  |  | 
|  | void main() { | 
|  | Expect.notEquals(foo(), bar()); | 
|  | Expect.notEquals(foo().a, bar().a); | 
|  | Expect.equals(foo().b, bar().b); | 
|  | } |