Pushed 1.3.12 to trunk.

test/mjsunit/arguments-enum.js

 // Copyright 2008 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 24 matching lines @@
 function setArgumentCount() {
   arguments[10] = 5;
   arguments.x = 4;
   var count = 0;
   for (var prop in arguments)
     count++;
   return count;
 }
 
 assertEquals(0, countArguments());
-assertEquals(0, countArguments(1));
-assertEquals(0, countArguments(1, 2));
-assertEquals(0, countArguments(1, 2, 3, 4, 5));
+assertEquals(1, countArguments(1));
+assertEquals(2, countArguments(1, 2));
+assertEquals(5, countArguments(1, 2, 3, 4, 5));
 
-assertEquals(0, setArgumentCount());
-assertEquals(0, setArgumentCount(1));
-assertEquals(0, setArgumentCount(1, 2));
-assertEquals(0, setArgumentCount(1, 2, 3, 4, 5));
+assertEquals(2, setArgumentCount());
+assertEquals(3, setArgumentCount(1));
+assertEquals(4, setArgumentCount(1, 2));
+assertEquals(7, setArgumentCount(1, 2, 3, 4, 5));