[issue22896] Don't use PyObject_As*Buffer() functions

[Antoine Pitrou]

Antoine Pitrou added the comment:

> Shouldn't PyObject_AsCharBuffer (or even PyObject_AsReadBuffer and_PyBuffer_Converter) accept only C-contiguous buffers?

PyBUF_SIMPLE enforces contiguity. See https://www.python.org/dev/peps/pep-3118/#access-flags and https://docs.python.org/3/c-api/buffer.html#c.Py_buffer.len

Also Stefan's post at http://mail.scipy.org/pipermail/numpy-discussion/2011-August/058189.html

Perhaps Stefan can confirm.

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nosy: +skrah

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<http://bugs.python.org/issue22896>
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