codec_getstreamcodec passes a None object (null
pointer, originally) as a "error" argument when errors
is given as a null pointer.  Due to this behavior,
parsers can't utilize cjkcodecs which doesn't allow
None as a default argument:

SyntaxError: encoding problem: with BOM

Attached patch fixes it to omit the argument, "errors",
and changed it to use PyObject_CallFunction instead of
PyEval_CallFunction because PyEval_CallFunction doesn't
work for simple "O" argument. (I don't know it was
intended. But we can still use PyEval_CallFunction if
we write it as "(O)")  I wonder if there's a reason
that you chose PyEval_CallFunction for the
initialization order or something?


How to reproduce the error:

echo "# coding: cp949" > test.py
./python test.py

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The patch looks good to me. Switching from
PyEval_CallFunction() to PyObject_CallFunction() should be
OK. (There seems to be subtle differences between the two,
but finding out what it is looks like a scavenger hunt to me
:-/)).

So go ahead and check it in.

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Committed as r47086.
Thanks for the review! :)

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Closing the patch