|  | // 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. | 
|  | // VMOptions=--optimization-filter=foo --deoptimize_every=10 --optimization-counter-threshold=10  --no-background-compilation | 
|  |  | 
|  | // Test that lazy deoptimization on stack checks does not damage unoptimized | 
|  | // frame. | 
|  |  | 
|  | import 'package:expect/expect.dart'; | 
|  |  | 
|  | foo() { | 
|  | var a = 0; | 
|  | var b = 1; | 
|  | var c = 2; | 
|  | var d = 3; | 
|  | var e = 4; | 
|  | for (var i = 0; i < 10; i++) { | 
|  | a++; | 
|  | b++; | 
|  | c++; | 
|  | d++; | 
|  | e++; | 
|  | } | 
|  | Expect.equals(10, a); | 
|  | Expect.equals(11, b); | 
|  | Expect.equals(12, c); | 
|  | Expect.equals(13, d); | 
|  | Expect.equals(14, e); | 
|  | } | 
|  |  | 
|  | main() { | 
|  | for (var i = 0; i < 10; ++i) { | 
|  | foo(); | 
|  | } | 
|  | } |