Added constructor call on object in InstantiateObject method

src/api-natives.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/api-natives.h"
 
 #include "src/api.h"
 #include "src/isolate.h"
 #include "src/lookup.h"
 
@@ skipping 187 matching lines @@
   if (constructor->IsUndefined()) {
     cons = isolate->object_function();
   } else {
     auto cons_templ = Handle<FunctionTemplateInfo>::cast(constructor);
     ASSIGN_RETURN_ON_EXCEPTION(
         isolate, cons, InstantiateFunction(isolate, cons_templ), JSFunction);
   }
   auto object = isolate->factory()->NewJSObject(cons);
   ASSIGN_RETURN_ON_EXCEPTION(
       isolate, result, ConfigureInstance(isolate, object, info), JSFunction);
+  if (!constructor->IsUndefined()) {
+    RETURN_ON_EXCEPTION(
+        isolate, Execution::Call(isolate, cons, result, 0, nullptr), JSObject);
+  }
   // TODO(dcarney): is this necessary?
   JSObject::MigrateSlowToFast(result, 0, "ApiNatives::InstantiateObject");
   return scope.CloseAndEscape(result);
 }
 
 
 void CacheFunction(Isolate* isolate, Handle<Smi> serial_number,
                    Handle<JSFunction> function) {
   auto cache = isolate->function_cache();
   auto new_cache = ObjectHashTable::Put(cache, serial_number, function);
@@ skipping 361 matching lines @@
     Handle<AccessorInfo> accessor(AccessorInfo::cast(array->get(i)));
     JSObject::SetAccessor(result, accessor).Assert();
   }
 
   DCHECK(result->shared()->IsApiFunction());
   return result;
 }
 
 }  // namespace internal
 }  // namespace v8