|  | // Copyright (c) 2014, 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. | 
|  |  | 
|  | // Regression test for issue 17210. | 
|  |  | 
|  | import "package:expect/expect.dart"; | 
|  |  | 
|  | @pragma('dart2js:noInline') | 
|  | num minusZero() => -0; | 
|  |  | 
|  | void main() { | 
|  | // Dart2js must not infer that the type-intersection of int and -0.0 is empty. | 
|  | // It must get an interceptor for the addition (`i += 3`), or use the native | 
|  | // JS + operation. | 
|  | int i = minusZero() as int; | 
|  | i += 3; | 
|  | Expect.equals(3, i); | 
|  | } |