Zero terminate script names generated by js2c.

tools/js2c.py

 #!/usr/bin/env python
 #
 # Copyright 2012 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
@@ skipping 241 matching lines @@
 
   template <>
   Vector<const char> NativesCollection<%(type)s>::GetRawScriptSource(int index) {
 %(get_raw_script_source_cases)s\
     return Vector<const char>("", 0);
   }
 
   template <>
   Vector<const char> NativesCollection<%(type)s>::GetScriptName(int index) {
 %(get_script_name_cases)s\
-    return Vector<const char>("", 0);
+    return Vector<const char>("", 1);
   }
 
   template <>
   Vector<const byte> NativesCollection<%(type)s>::GetScriptsSource() {
     return Vector<const byte>(sources, %(total_length)i);
   }
 
   template <>
   void NativesCollection<%(type)s>::SetRawScriptsSource(Vector<const char> raw_source) {
     ASSERT(%(raw_total_length)i == raw_source.length());
@@ skipping 84 matching lines @@
   for (id, raw_length, module_offset) in debugger_ids + ids:
     native_name = "native %s.js" % id
     get_index_cases.append(GET_INDEX_CASE % { 'id': id, 'i': i })
     get_raw_script_source_cases.append(GET_RAW_SCRIPT_SOURCE_CASE % {
         'offset': module_offset,
         'raw_length': raw_length,
         'i': i
         })
     get_script_name_cases.append(GET_SCRIPT_NAME_CASE % {
         'name': native_name,
-        'length': len(native_name),
+        'length': len(native_name) + 1,
         'i': i
         })
     i = i + 1
 
   # Emit result
   output = open(str(target[0]), "w")
   output.write(HEADER_TEMPLATE % {
     'builtin_count': len(ids) + len(debugger_ids),
     'debugger_count': len(debugger_ids),
     'sources_data': sources_data,
     'raw_sources_declaration': raw_sources_declaration,
     'raw_total_length': raw_total_length,
     'total_length': total_length,
     'get_index_cases': "".join(get_index_cases),
     'get_raw_script_source_cases': "".join(get_raw_script_source_cases),
     'get_script_name_cases': "".join(get_script_name_cases),
     'type': env['TYPE']
   })
   output.close()
 
 def main():
   natives = sys.argv[1]
   type = sys.argv[2]
   compression = sys.argv[3]
   source_files = sys.argv[4:]
   JS2C(source_files, [natives], { 'TYPE': type, 'COMPRESSION': compression })
 
 if __name__ == "__main__":
   main()