[es6] Use strict arguments objects for destructured parameters

src/parser.cc

 // Copyright 2012 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/v8.h"
 
 #include "src/api.h"
 #include "src/ast.h"
 #include "src/ast-literal-reindexer.h"
 #include "src/bailout-reason.h"
@@ skipping 3908 matching lines @@
 
   for (int i = 0; i < parameters->Arity(); ++i) {
     auto parameter = parameters->at(i);
     ExpressionClassifier classifier;
     DeclareFormalParameter(
         parameters->scope, parameter, parameters->is_simple, &classifier);
     if (!duplicate_loc->IsValid()) {
       *duplicate_loc = classifier.duplicate_formal_parameter_error().location;
     }
   }
+  DCHECK_EQ(parameters->is_simple, parameters->scope->has_simple_parameters());
 }
 
 
 void ParserTraits::ReindexLiterals(const ParserFormalParameters& parameters) {
   if (parser_->function_state_->materialized_literal_count() > 0) {
     AstLiteralReindexer reindexer;
 
     for (const auto p : parameters.params) {
       if (p.pattern != nullptr) reindexer.Reindex(p.pattern);
     }
@@ skipping 2070 matching lines @@
 Expression* Parser::SpreadCallNew(Expression* function,
                                   ZoneList<v8::internal::Expression*>* args,
                                   int pos) {
   args->InsertAt(0, function, zone());
 
   return factory()->NewCallRuntime(
       ast_value_factory()->reflect_construct_string(), NULL, args, pos);
 }
 }  // namespace internal
 }  // namespace v8