Ensure CreateDataProperty works correctly on TypedArrays

src/objects.cc

 // Copyright 2015 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 "src/objects.h"
 
 #include <cmath>
 #include <iomanip>
 #include <sstream>
 
@@ skipping 6667 matching lines @@
 
 Maybe<bool> JSObject::CreateDataProperty(LookupIterator* it,
                                          Handle<Object> value,
                                          ShouldThrow should_throw) {
   DCHECK(it->GetReceiver()->IsJSObject());
   MAYBE_RETURN(JSReceiver::GetPropertyAttributes(it), Nothing<bool>());
   Handle<JSReceiver> receiver = Handle<JSReceiver>::cast(it->GetReceiver());
   Isolate* isolate = receiver->GetIsolate();
 
   if (it->IsFound()) {
-    if (!it->IsConfigurable()) {
+    Maybe<PropertyAttributes> attributes = GetPropertyAttributes(it);
+    MAYBE_RETURN(attributes, Nothing<bool>());
+    if ((attributes.FromJust() & DONT_DELETE) != 0) {
       RETURN_FAILURE(
           isolate, should_throw,
           NewTypeError(MessageTemplate::kRedefineDisallowed, it->GetName()));
     }
   } else {
     if (!JSObject::IsExtensible(Handle<JSObject>::cast(it->GetReceiver()))) {
       RETURN_FAILURE(
           isolate, should_throw,
           NewTypeError(MessageTemplate::kDefineDisallowed, it->GetName()));
     }
@@ skipping 13057 matching lines @@
   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