[issue6697] Python 3.1 segfaults when invalid UTF-8 characters are passed from command line

[STINNER Victor]

STINNER Victor <victor.stinner at haypocalc.com> added the comment:

The error occurs in Py_Main(), on _PyUnicode_AsString(commandObj). The
problem is that _PyUnicode_AsString() is not checked for error. Here is
a patch fixing two errors:
 - display on error message instead of a crash on
_PyUnicode_AsString(commandObj) failure
 - don't call Py_DECREF(commandObj) if commandObj is NULL
(PyUnicode_FromWideChar error, a different error)

My patch also includes a test. The test should be moved somewhere else,
but I don't know where.

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keywords: +patch
nosy: +haypo
Added file: http://bugs.python.org/file14730/pymain.patch

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