Fix issue 6264 with a test case....

test/cctest/test-api.cc

 // Copyright 2007-2008 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 5430 matching lines @@
   Local<ObjectTemplate> templ = ObjectTemplate::New();
   templ->SetAccessCheckCallbacks(NamedSetAccessBlocker,
                                  IndexedSetAccessBlocker);
   templ->Set(v8_str("x"), v8::True());
   Local<v8::Object> instance = templ->NewInstance();
   context->Global()->Set(v8_str("obj"), instance);
   Local<Value> value = CompileRun("obj.x");
   CHECK(value->BooleanValue());
 }
 
+static bool NamedGetAccessBlocker(Local<v8::Object> obj,
+                                  Local<Value> name,
+                                  v8::AccessType type,
+                                  Local<Value> data) {
+  return false;
+}
+
+
+static bool IndexedGetAccessBlocker(Local<v8::Object> obj,
+                                    uint32_t key,
+                                    v8::AccessType type,
+                                    Local<Value> data) {
+  return false;
+}
+
+
+
+THREADED_TEST(AccessChecksReenabledCorrectly) {
+  v8::HandleScope scope;
+  LocalContext context;
+  Local<ObjectTemplate> templ = ObjectTemplate::New();
+  templ->SetAccessCheckCallbacks(NamedGetAccessBlocker,
+                                 IndexedGetAccessBlocker);
+  templ->Set(v8_str("a"), v8_str("a"));
+  // Add more than 8 (see kMaxFastProperties) properties
+  // so that the constructor will force copying map.
+  char buf[5];
+  for (int i = 0; i < 999; i++) {
+    sprintf(buf, "x%3d", i);
+    buf[4] = 0;
+    templ->Set(v8_str(buf), v8::Number::New(i));
+  }
+
+  Local<v8::Object> instance_1 = templ->NewInstance();
+  context->Global()->Set(v8_str("obj_1"), instance_1);
+
+  Local<Value> value_1 = CompileRun("obj_1.a");
+  CHECK(value_1->IsUndefined());
+
+  Local<v8::Object> instance_2 = templ->NewInstance();
+  context->Global()->Set(v8_str("obj_2"), instance_2);
+
+  Local<Value> value_2 = CompileRun("obj_2.a");
+  CHECK(value_2->IsUndefined());
+}
 
 // This tests that access check information remains on the global
 // object template when creating contexts.
 THREADED_TEST(AccessControlRepeatedContextCreation) {
   v8::HandleScope handle_scope;
   v8::Handle<v8::ObjectTemplate> global_template = v8::ObjectTemplate::New();
   global_template->SetAccessCheckCallbacks(NamedSetAccessBlocker,
                                            IndexedSetAccessBlocker);
   i::Handle<i::ObjectTemplateInfo> internal_template =
       v8::Utils::OpenHandle(*global_template);
@@ skipping 87 matching lines @@
     CompileRun("for (var j = 0; j < 10; j++) new RegExp('');");
   }
   // Test CallIC.
   for (int i = 0; i < 2; i++) {
     LocalContext context;
     context->Global()->Set(v8_str("tmp"), v8::True());
     context->Global()->Delete(v8_str("tmp"));
     CompileRun("for (var j = 0; j < 10; j++) RegExp('')");
   }
 }