Even more experimental scanner: fix buffer_end_ when we have wider chars.

src/lexer/even-more-experimental-scanner.cc

 // Copyright 2013 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 78 matching lines @@
 
 
 EvenMoreExperimentalScanner::EvenMoreExperimentalScanner(
     const char* fname,
     Isolate* isolate,
     int repeat)
     : unicode_cache_(isolate->unicode_cache()) {
   int size = 0;
   buffer_ = const_cast<YYCTYPE*>(reinterpret_cast<const YYCTYPE*>(
       ReadFile(fname, isolate, &size, repeat)));
-  buffer_end_ = buffer_ + size;
+  buffer_end_ = buffer_ + size / sizeof(YYCTYPE);
   start_ = buffer_;
   cursor_ = buffer_;
   marker_ = buffer_;
 }
 
 
 EvenMoreExperimentalScanner::~EvenMoreExperimentalScanner() {
   delete[] buffer_;
 }
 
@@ skipping 19 matching lines @@
 }
 
 
 bool EvenMoreExperimentalScanner::ValidIdentifierStart() {
   return unicode_cache_->IsIdentifierStart(ScanHexNumber(4));
 }
 
 
 }
 }