Fixed compiler so that it passes Switch1NegativeTest.dart.

lib/corelib.dart

 // Copyright (c) 2011, 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.
 
 #library("dart:core");
 #import("dart:coreimpl");
 
 #native("core.js");
 
 // TODO(jimhug): Better way to map in standard corelib
@@ skipping 73 matching lines @@
   }
   String toString() {
     return "Failed type check: type $srcType is not assignable to type " +
         "$dstType of $dstName in $url at line " +
         "$line, column $column.";
   }
   final String srcType;
   final String dstType;
   final String dstName;
 }
 class FallThroughError {

[jimhug, 2011/10/27 17:45:11]

This should be causing a validation error - you can't initialize finals after
initializers have run.  Try this version for the constructor:

const FallThroughError(this.url, this.line);

[Emily Fortuna, 2011/10/27 17:59:04]

This was left over when when I was testing the dart->js constructor issue. It
has been taken out.

On 2011/10/27 17:45:11, jimhug wrote:

-  const FallThroughError() : super();
+  final String url;
+  final int line;
+
+  const FallThroughError(_url, _line) {
+    url = _url;
+    line = _line;
+  }
+
+  String toString() {
+    return "Switch case fall-through in $url at line $line.";
+  }
 }
 
 // Dart core library.
 
 class Object native "Object" {
 
   const Object() native;
 
   bool operator ==(Object other) native;
   String toString() native;
 
   // TODO(jmesserly): optimize this. No need to call it.
   get dynamic() => this;
 }