Mark Dickinson <dicki...@gmail.com> added the comment:

> That's because the new buffer protocol doesn't define ownership of
> Py_buffer structs. As a result, nothing can be assumed at to which
> piece of code is responsible for allocation and deallocation of
> related memory areas (such as shapes and strides arrays).

I was just chatting to Travis about this;  he suggested that the 'internal' 
field of the Py_buffer struct might be used to record who's responsible for 
deallocation of shape and stride arrays.

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Python tracker <rep...@bugs.python.org>
<http://bugs.python.org/issue9990>
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