|  | // Copyright (c) 2020, 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. | 
|  | // | 
|  | // dart2jsOptions=-O0 | 
|  |  | 
|  | // Regression test for issue 42891. The root cause was a malformed SSA due to | 
|  | // generating a dynamic entry point argument test for an elided parameter | 
|  | // directly on the HLocalValue , which should only be an operand to HLocalGet | 
|  | // and HLocalSet. | 
|  |  | 
|  | import "package:expect/expect.dart"; | 
|  |  | 
|  | class CCC { | 
|  | void foo([num x = 123]) { | 
|  | try { | 
|  | Expect.equals(123, x); | 
|  | x = 0; | 
|  | } finally { | 
|  | Expect.equals(0, x); | 
|  | } | 
|  | } | 
|  |  | 
|  | void bar([num x = 456]) { | 
|  | try { | 
|  | Expect.equals(123, x); | 
|  | x = 0; | 
|  | } finally { | 
|  | Expect.equals(0, x); | 
|  | } | 
|  | } | 
|  | } | 
|  |  | 
|  | void main() { | 
|  | CCC().foo(); | 
|  | CCC().bar(123); | 
|  | } |