Fix handling of escaped "let" and "static" tokens

src/parsing/scanner.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.
 
 // Features shared by parsing and pre-parsing scanners.
 
 #include "src/parsing/scanner.h"
 
 #include <stdint.h>
 
@@ skipping 1188 matching lines @@
     if (input_length == keyword_length && input[1] == keyword[1] && \
         (keyword_length <= 2 || input[2] == keyword[2]) &&          \
         (keyword_length <= 3 || input[3] == keyword[3]) &&          \
         (keyword_length <= 4 || input[4] == keyword[4]) &&          \
         (keyword_length <= 5 || input[5] == keyword[5]) &&          \
         (keyword_length <= 6 || input[6] == keyword[6]) &&          \
         (keyword_length <= 7 || input[7] == keyword[7]) &&          \
         (keyword_length <= 8 || input[8] == keyword[8]) &&          \
         (keyword_length <= 9 || input[9] == keyword[9])) {          \
       if (escaped) {                                                \
-        return token == Token::FUTURE_STRICT_RESERVED_WORD          \
+        /* TODO(adamk): YIELD should be handled specially. */       \
+        return (token == Token::FUTURE_STRICT_RESERVED_WORD ||      \
+                token == Token::LET || token == Token::STATIC)      \
                    ? Token::ESCAPED_STRICT_RESERVED_WORD            \
                    : Token::ESCAPED_KEYWORD;                        \
       }                                                             \
       return token;                                                 \
     }                                                               \
   }
     KEYWORDS(KEYWORD_GROUP_CASE, KEYWORD)
   }
   return Token::IDENTIFIER;
 }
@@ skipping 444 matching lines @@
     backing_store_.Add(static_cast<uint8_t>((one_byte_length >> 7) | 0x80u));
   }
   backing_store_.Add(static_cast<uint8_t>(one_byte_length & 0x7f));
 
   backing_store_.AddBlock(bytes);
   return backing_store_.EndSequence().start();
 }
 
 }  // namespace internal
 }  // namespace v8