[es6] silence access-check failure for well-known symbol properties

src/objects.cc

 // Copyright 2013 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.
 
 #include <iomanip>
 #include <sstream>
 
 #include "src/v8.h"
 
 #include "src/accessors.h"
@@ skipping 109 matching lines @@
   if (js_object->map()->is_access_check_needed()) return false;
   auto isolate = js_object->GetIsolate();
   // TODO(dcarney): this should just be read from the symbol registry so as not
   // to be context dependent.
   auto key = isolate->promise_status();
   // Shouldn't be possible to throw here.
   return JSObject::HasRealNamedProperty(js_object, key).FromJust();
 }
 
 
-MaybeHandle<Object> Object::GetProperty(LookupIterator* it,
-                                        LanguageMode language_mode) {
+MaybeHandle<Object> Object::GetPropertyInternal(LookupIterator* it,
+                                                bool* failedAccessCheck,
+                                                LanguageMode language_mode) {
   for (; it->IsFound(); it->Next()) {
     switch (it->state()) {
       case LookupIterator::NOT_FOUND:
       case LookupIterator::TRANSITION:
         UNREACHABLE();
       case LookupIterator::JSPROXY:
         return JSProxy::GetPropertyWithHandler(
             it->GetHolder<JSProxy>(), it->GetReceiver(), it->GetName());
       case LookupIterator::INTERCEPTOR: {
         bool done;
         Handle<Object> result;
         ASSIGN_RETURN_ON_EXCEPTION(
             it->isolate(), result,
             JSObject::GetPropertyWithInterceptor(it, &done), Object);
         if (done) return result;
         break;
       }
       case LookupIterator::ACCESS_CHECK:
         if (it->HasAccess()) break;
-        return JSObject::GetPropertyWithFailedAccessCheck(it);
+        *failedAccessCheck = true;
+        return MaybeHandle<Object>();
       case LookupIterator::ACCESSOR:
         return GetPropertyWithAccessor(it, language_mode);
       case LookupIterator::INTEGER_INDEXED_EXOTIC:
         return ReadAbsentProperty(it, language_mode);
       case LookupIterator::DATA:
         return it->GetDataValue();
     }
   }
   return ReadAbsentProperty(it, language_mode);
 }
@@ skipping 15964 matching lines @@
                                             Handle<Object> new_value) {
   if (cell->value() != *new_value) {
     cell->set_value(*new_value);
     Isolate* isolate = cell->GetIsolate();
     cell->dependent_code()->DeoptimizeDependentCodeGroup(
         isolate, DependentCode::kPropertyCellChangedGroup);
   }
 }
 }  // namespace internal
 }  // namespace v8