Use internal array as API function cache.

test/cctest/test-api.cc

 // Copyright 2012 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 19635 matching lines @@
   v8::HandleScope scope(context->GetIsolate());
   Local<Object> obj = Object::New();
   Local<String> key = String::New("key");
   obj->SetHiddenValue(key, v8::Undefined());
   Local<Value> value = obj->GetHiddenValue(key);
   CHECK(!value.IsEmpty());
   CHECK(value->IsUndefined());
 }
 
 
+THREADED_TEST(Regress260106) {
+  LocalContext context;
+  v8::HandleScope scope(context->GetIsolate());
+  Local<FunctionTemplate> templ = FunctionTemplate::New(DummyCallHandler);
+  CompileRun("for (var i = 0; i < 128; i++) Object.prototype[i] = 0;");
+  Local<Function> function = templ->GetFunction();
+  CHECK(!function.IsEmpty());
+  CHECK(function->IsFunction());
+}
+
+
 #ifndef WIN32
 class ThreadInterruptTest {
  public:
   ThreadInterruptTest() : sem_(NULL), sem_value_(0) { }
   ~ThreadInterruptTest() { delete sem_; }
 
   void RunTest() {
     sem_ = i::OS::CreateSemaphore(0);
 
     InterruptThread i_thread(this);
@@ skipping 219 matching lines @@
   CheckCorrectThrow("%HasProperty(other, 'x')");
   CheckCorrectThrow("%HasElement(other, 1)");
   CheckCorrectThrow("%IsPropertyEnumerable(other, 'x')");
   CheckCorrectThrow("%GetPropertyNames(other)");
   CheckCorrectThrow("%GetLocalPropertyNames(other, true)");
   CheckCorrectThrow("%DefineOrRedefineAccessorProperty("
                         "other, 'x', null, null, 1)");
 }
 
 #endif  // WIN32