[destructuring] Re-index materialized literals in arrow function parameters.

src/parser.h

 // 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.
 
 #ifndef V8_PARSER_H_
 #define V8_PARSER_H_
 
 #include "src/allocation.h"
 #include "src/ast.h"
 #include "src/compiler.h"  // TODO(titzer): remove this include dependency
@@ skipping 770 matching lines @@
                             FunctionKind kind = kNormalFunction);
 
   V8_INLINE void DeclareFormalParameter(
       ParserFormalParameterParsingState* parsing_state, Expression* name,
       ExpressionClassifier* classifier, bool is_rest);
   void ParseArrowFunctionFormalParameters(
       ParserFormalParameterParsingState* scope, Expression* params,
       const Scanner::Location& params_loc, Scanner::Location* duplicate_loc,
       bool* ok);
 
+  void ReindexLiterals(const ParserFormalParameterParsingState& parsing_state);
+
   // Temporary glue; these functions will move to ParserBase.
   Expression* ParseV8Intrinsic(bool* ok);
   FunctionLiteral* ParseFunctionLiteral(
       const AstRawString* name, Scanner::Location function_name_location,
       bool name_is_strict_reserved, FunctionKind kind,
       int function_token_position, FunctionLiteral::FunctionType type,
       FunctionLiteral::ArityRestriction arity_restriction, bool* ok);
   V8_INLINE void SkipLazyFunctionBody(
       int* materialized_literal_count, int* expected_property_count, bool* ok,
       Scanner::BookmarkScope* bookmark = nullptr);
@@ skipping 536 matching lines @@
   auto* init_block =
       parser_->BuildParameterInitializationBlock(formal_parameters, ok);
   if (!*ok) return;
   if (init_block != nullptr) {
     body->Add(init_block, parser_->zone());
   }
 }
 } }  // namespace v8::internal
 
 #endif  // V8_PARSER_H_