[parser] Fix bug in for-of desugaring.

src/parsing/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_PARSING_PARSER_H_
 #define V8_PARSING_PARSER_H_
 
 #include "src/allocation.h"
 #include "src/ast/ast.h"
 #include "src/ast/scopes.h"
@@ skipping 440 matching lines @@
                                 const AstRawString* arg, int pos);
 
   // Generic AST generator for throwing errors from compiled code.
   Expression* NewThrowError(Runtime::FunctionId function_id,
                             MessageTemplate::Template message,
                             const AstRawString* arg, int pos);
 
   void FinalizeIteratorUse(Variable* completion, Expression* condition,
                            Variable* iter, Block* iterator_use, Block* result);
 
-  Statement* FinalizeForOfStatement(ForOfStatement* loop, int pos);
+  Statement* FinalizeForOfStatement(ForOfStatement* loop, Variable* completion,
+                                    int pos);
 
   // Reporting errors.
   void ReportMessageAt(Scanner::Location source_location,
                        MessageTemplate::Template message,
                        const char* arg = NULL,
                        ParseErrorType error_type = kSyntaxError);
   void ReportMessage(MessageTemplate::Template message, const char* arg = NULL,
                      ParseErrorType error_type = kSyntaxError);
   void ReportMessage(MessageTemplate::Template message, const AstRawString* arg,
                      ParseErrorType error_type = kSyntaxError);
@@ skipping 484 matching lines @@
   Statement* ParseScopedStatement(ZoneList<const AstRawString*>* labels,
                                   bool legacy, bool* ok);
 
   // !%_IsJSReceiver(result = iterator.next()) &&
   //     %ThrowIteratorResultNotAnObject(result)
   Expression* BuildIteratorNextResult(Expression* iterator, Variable* result,
                                       int pos);
 
 
   // Initialize the components of a for-in / for-of statement.
-  void InitializeForEachStatement(ForEachStatement* stmt, Expression* each,
-                                  Expression* subject, Statement* body,
-                                  int each_keyword_pos);
-  void InitializeForOfStatement(ForOfStatement* stmt, Expression* each,
-                                Expression* iterable, Statement* body,
-                                int next_result_pos = kNoSourcePosition);
+  Statement* InitializeForEachStatement(ForEachStatement* stmt,
+                                        Expression* each, Expression* subject,
+                                        Statement* body, int each_keyword_pos);
+  Statement* InitializeForOfStatement(ForOfStatement* stmt, Expression* each,
+                                      Expression* iterable, Statement* body,
+                                      bool finalize,
+                                      int next_result_pos = kNoSourcePosition);
   Statement* DesugarLexicalBindingsInForStatement(
       Scope* inner_scope, VariableMode mode,
       ZoneList<const AstRawString*>* names, ForStatement* loop, Statement* init,
       Expression* cond, Statement* next, Statement* body, bool* ok);
 
   void DesugarAsyncFunctionBody(const AstRawString* function_name, Scope* scope,
                                 ZoneList<Statement*>* body,
                                 Type::ExpressionClassifier* classifier,
                                 FunctionKind kind, FunctionBody type,
                                 bool accept_IN, int pos, bool* ok);
@@ skipping 312 matching lines @@
 
 DoExpression* ParserTraits::ParseDoExpression(bool* ok) {
   return parser_->ParseDoExpression(ok);
 }
 
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_PARSING_PARSER_H_