Added ability to remove prototype from function. In this case, [[Construct]] ...

src/handles.cc

 // Copyright 2009 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 185 matching lines @@
 
 
 void FlattenString(Handle<String> string) {
   CALL_HEAP_FUNCTION_VOID(string->TryFlatten());
   ASSERT(string->IsFlat());
 }
 
 
 Handle<Object> SetPrototype(Handle<JSFunction> function,
                             Handle<Object> prototype) {
+  ASSERT(function->should_have_prototype());
   CALL_HEAP_FUNCTION(Accessors::FunctionSetPrototype(*function,
                                                      *prototype,
                                                      NULL),
                      Object);
 }
 
 
 Handle<Object> SetProperty(Handle<JSObject> object,
                            Handle<String> key,
                            Handle<Object> value,
@@ skipping 580 matching lines @@
 
 OptimizedObjectForAddingMultipleProperties::
 ~OptimizedObjectForAddingMultipleProperties() {
   // Reoptimize the object to allow fast property access.
   if (has_been_transformed_) {
     TransformToFastProperties(object_, unused_property_fields_);
   }
 }
 
 } }  // namespace v8::internal