Make it possible to set a getter and a setter at the same time

src/objects-inl.h

 // Copyright 2012 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.
 //
 // Review notes:
 //
 // - The use of macros in these inline functions may seem superfluous
 // but it is absolutely needed to make sure gcc generates optimal
 // code. gcc is not happy when attempting to inline too deep.
 //
@@ skipping 7260 matching lines @@
   if (!setter->IsNull()) set_setter(setter);
 }
 
 
 bool AccessorPair::Equals(AccessorPair* pair) {
   return (this == pair) || pair->Equals(getter(), setter());
 }
 
 
 bool AccessorPair::Equals(Object* getter_value, Object* setter_value) {
-  return (getter() == getter_value) && (setter() == setter_value);
+  return ((getter()->IsTheHole() && getter_value->IsNull()) ||
+          (getter() == getter_value)) &&
+         ((setter()->IsTheHole() && setter_value->IsNull()) ||
+          (setter() == setter_value));
 }
 
 
 bool AccessorPair::ContainsAccessor() {
   return IsJSAccessor(getter()) || IsJSAccessor(setter());
 }
 
 
 bool AccessorPair::IsJSAccessor(Object* obj) {
   return obj->IsCallable() || obj->IsUndefined();
@@ skipping 559 matching lines @@
 #undef WRITE_INT64_FIELD
 #undef READ_BYTE_FIELD
 #undef WRITE_BYTE_FIELD
 #undef NOBARRIER_READ_BYTE_FIELD
 #undef NOBARRIER_WRITE_BYTE_FIELD
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_OBJECTS_INL_H_