Adding js2c.py "Too many arguments" for Macros Error

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 90 matching lines @@
     # Scan over the arguments
     height = 1
     start = pattern_match.start()
     end = pattern_match.end()
     assert lines[end - 1] == '('
     last_match = end
     arg_index = [0]  # Wrap state into array, to work around Python "scoping"
     mapping = { }
     def add_arg(str):
       # Remember to expand recursively in the arguments
+      if arg_index[0] >= len(macro.args):
+        lineno = lines.count(os.linesep, 0, start) + 1
+        raise Error('line %s: Too many arguments for macro "%s"' % (lineno, name_pattern.pattern))
       replacement = expander(str.strip())
       mapping[macro.args[arg_index[0]]] = replacement
       arg_index[0] += 1
     while end < len(lines) and height > 0:
       # We don't count commas at higher nesting levels.
       if lines[end] == ',' and height == 1:
         add_arg(lines[last_match:end])
         last_match = end + 1
       elif lines[end] in ['(', '{', '[']:
         height = height + 1
@@ skipping 471 matching lines @@
   JS2C(args[2:],
        args[0],
        args[1],
        options.raw,
        options.startup_blob,
        options.js)
 
 
 if __name__ == "__main__":
   main()