Following code

# coding: utf-8
print "年"

outputs

C:\Documents and Settings\WhiteRabbit>py3k b.py
  File "b.py", line 3
    print "年"

as expected, but following code

# coding: cp932
print "年"

outputs

C:\Documents and Settings\WhiteRabbit>py3k a.py
  File "a.py", line 4
    [22605 refs]

Probably this happens because PyUnicode_DecodeUTF8 at
Python/pythonrun.c(1757) assumes err->text to be UTF8, but this is not
true when source file is not encoded with UTF8.

# Sorry there is no patch.