[es6] Correct parsing of regular expression literal flags.

src/factory.cc

 // Copyright 2014 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/factory.h"
 
 #include "src/allocation-site-scopes.h"
 #include "src/base/bits.h"
 #include "src/bootstrapper.h"
 #include "src/conversions.h"
@@ skipping 2279 matching lines @@
 
 void Factory::SetRegExpAtomData(Handle<JSRegExp> regexp,
                                 JSRegExp::Type type,
                                 Handle<String> source,
                                 JSRegExp::Flags flags,
                                 Handle<Object> data) {
   Handle<FixedArray> store = NewFixedArray(JSRegExp::kAtomDataSize);
 
   store->set(JSRegExp::kTagIndex, Smi::FromInt(type));
   store->set(JSRegExp::kSourceIndex, *source);
-  store->set(JSRegExp::kFlagsIndex, Smi::FromInt(flags.value()));
+  store->set(JSRegExp::kFlagsIndex, Smi::FromInt(flags));
   store->set(JSRegExp::kAtomPatternIndex, *data);
   regexp->set_data(*store);
 }
 
 
 void Factory::SetRegExpIrregexpData(Handle<JSRegExp> regexp,
                                     JSRegExp::Type type,
                                     Handle<String> source,
                                     JSRegExp::Flags flags,
                                     int capture_count) {
   Handle<FixedArray> store = NewFixedArray(JSRegExp::kIrregexpDataSize);
   Smi* uninitialized = Smi::FromInt(JSRegExp::kUninitializedValue);
   store->set(JSRegExp::kTagIndex, Smi::FromInt(type));
   store->set(JSRegExp::kSourceIndex, *source);
-  store->set(JSRegExp::kFlagsIndex, Smi::FromInt(flags.value()));
+  store->set(JSRegExp::kFlagsIndex, Smi::FromInt(flags));
   store->set(JSRegExp::kIrregexpLatin1CodeIndex, uninitialized);
   store->set(JSRegExp::kIrregexpUC16CodeIndex, uninitialized);
   store->set(JSRegExp::kIrregexpLatin1CodeSavedIndex, uninitialized);
   store->set(JSRegExp::kIrregexpUC16CodeSavedIndex, uninitialized);
   store->set(JSRegExp::kIrregexpMaxRegisterCountIndex, Smi::FromInt(0));
   store->set(JSRegExp::kIrregexpCaptureCountIndex,
              Smi::FromInt(capture_count));
   regexp->set_data(*store);
 }
 
 
 Handle<Object> Factory::GlobalConstantFor(Handle<Name> name) {
   if (Name::Equals(name, undefined_string())) return undefined_value();
   if (Name::Equals(name, nan_string())) return nan_value();
   if (Name::Equals(name, infinity_string())) return infinity_value();
   return Handle<Object>::null();
 }
 
 
 Handle<Object> Factory::ToBoolean(bool value) {
   return value ? true_value() : false_value();
 }
 
 
 }  // namespace internal
 }  // namespace v8