[issue17223] Initializing array.array with unicode type code and buffer segfaults

[STINNER Victor]

STINNER Victor added the comment:

On Windows, test_array can use an invalid surrogate pair to test this
issue: b'\xff\xdf\x61\x00' for example.

I don't know how to easily check the size of wchar_t.
ctypes.sizeof(ctypes.c_wchar) can be used, but ctypes is not always
available. sys.unicode is now always 0x10ffff since Python 3.3.
PyUnicode_GetMax() is not accessible in Python.

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<http://bugs.python.org/issue17223>
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