[es6] early error when Identifier is an escaped reserved word

src/preparser.cc

 // Copyright 2011 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 <cmath>
 
 #include "src/allocation.h"
 #include "src/base/logging.h"
 #include "src/conversions-inl.h"
 #include "src/conversions.h"
@@ skipping 184 matching lines @@
     case Token::CONST:
       if (allow_const()) {
         return ParseVariableStatement(kStatementListItem, ok);
       }
       break;
     case Token::LET:
       if (IsNextLetKeyword()) {
         return ParseVariableStatement(kStatementListItem, ok);
       }
       break;
+    case Token::IDENTIFIER:
+      CheckNextEscapedKeyword(ok);

[adamk, 2015/11/03 23:00:57]

Same here, CHECK_OK and break.

[caitp (gmail), 2015/11/04 04:49:24]

Done.

+      if (!*ok) return Statement::Default();
     default:
       break;
   }
   return ParseStatement(ok);
 }
 
 
 void PreParser::ParseStatementList(int end_token, bool* ok,
                                    Scanner::BookmarkScope* bookmark) {
   // SourceElements ::
@@ skipping 1039 matching lines @@
     Expect(Token::RBRACE, CHECK_OK);
     return PreParserExpression::Default();
   }
 }
 
 #undef CHECK_OK
 
 
 }  // namespace internal
 }  // namespace v8