[modules] Make handling of module info's regular exports more robust.

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/accessors.h"
 #include "src/allocation-site-scopes.h"
 #include "src/base/bits.h"
 #include "src/bootstrapper.h"
@@ skipping 1798 matching lines @@
   CALL_HEAP_FUNCTION(
       isolate(),
       isolate()->heap()->AllocateJSObjectFromMap(*map),
       JSGeneratorObject);
 }
 
 Handle<Module> Factory::NewModule(Handle<SharedFunctionInfo> code) {
   Handle<ModuleInfo> module_info(code->scope_info()->ModuleDescriptorInfo(),
                                  isolate());
   Handle<ObjectHashTable> exports =
-      ObjectHashTable::New(isolate(), module_info->regular_exports()->length());
+      ObjectHashTable::New(isolate(), module_info->RegularExportCount());
   int requested_modules_length = module_info->module_requests()->length();
   Handle<FixedArray> requested_modules =
       requested_modules_length > 0 ? NewFixedArray(requested_modules_length)
                                    : empty_fixed_array();
 
   Handle<Module> module = Handle<Module>::cast(NewStruct(MODULE_TYPE));
   module->set_code(*code);
   module->set_exports(*exports);
   module->set_hash(isolate()->GenerateIdentityHash(Smi::kMaxValue));
   module->set_module_namespace(isolate()->heap()->undefined_value());
@@ skipping 872 matching lines @@
       Handle<JSFixedArrayIterator>::cast(NewJSObjectFromMap(map));
   iterator->set_initial_next(*next);
   iterator->set_array(*array);
   iterator->set_index(0);
   iterator->InObjectPropertyAtPut(JSFixedArrayIterator::kNextIndex, *next);
   return iterator;
 }
 
 }  // namespace internal
 }  // namespace v8