[es6] do not add caller/arguments to ES6 function definitions

test/mjsunit/harmony/classes.js

 // Copyright 2014 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // Flags: --harmony-classes --harmony-sloppy
 
 (function TestBasics() {
   var C = class C {}
   assertEquals(typeof C, 'function');
   assertEquals(C.__proto__, Function.prototype);
@@ skipping 857 matching lines @@
 
   class C3 extends Object {
     constructor() {
       ; 'use strict';;;;;
       // This is a comment.
       super();
     }
   };
   new C3();
 }());
+
+
+function testClassRestrictedProperties(C) {
+  assertEquals(false, C.hasOwnProperty("arguments"));
+  assertEquals(null, C.arguments);
+
+  assertEquals(false, C.hasOwnProperty("caller"));
+  assertEquals(null, C.caller);
+
+  assertEquals(false, (new C).method.hasOwnProperty("arguments"));
+  assertEquals(null, (new C).method.arguments);
+
+  assertEquals(false, (new C).method.hasOwnProperty("caller"));
+  assertEquals(null, (new C).method.caller);
+}
+
+
+(function testRestrictedPropertiesStrict() {
+  "use strict";
+  class ClassWithDefaultConstructor {
+    method() {}
+  }
+  class Class {
+    constructor() {}
+    method() {}
+  }

[arv (Not doing code reviews), 2015/03/25 13:36:47]

Maybe have a derived class too?

+
+  testClassRestrictedProperties(ClassWithDefaultConstructor);
+  testClassRestrictedProperties(Class);
+  testClassRestrictedProperties(class { method() {} });
+  testClassRestrictedProperties(class { constructor() {} method() {} });
+})();
+
+
+(function testRestrictedPropertiesSloppy() {
+  class ClassWithDefaultConstructor {
+    method() {}
+  }
+  class Class {
+    constructor() {}
+    method() {}
+  }
+
+  testClassRestrictedProperties(ClassWithDefaultConstructor);
+  testClassRestrictedProperties(Class);
+  testClassRestrictedProperties(class { method() {} });
+  testClassRestrictedProperties(class { constructor() {} method() {} });
+})();