[Python-Dev] Allocation of shape and strides fields in Py_buffer

[Greg Ewing]

Nick Coghlan wrote:

> [from the PEP] "If the exporter wants to be able to change an
> object's shape, strides, and/or suboffsets before releasebuffer is
> called then it should allocate those arrays when getbuffer is called
> (pointing to them in the buffer-info structure provided) and free them
> when releasebuffer is called."

Even allowing this seems rather dubious to me. I suppose
there's no serious danger as long as the block of memory
ultimately holding the data doesn't move or change size,
but changing the shape could confuse a buffer user that's
iterating over the data.

-- 
Greg