[docs] [issue15821] PyMemoryView_FromBuffer() behavior change (possible regression)

Fri Aug 31 23:06:10 CEST 2012

Alexander Belopolsky added the comment:
Here is what I think the test case should look like (untested):
static PyObject *
memoryview_from_buffer_cleanup(PyObject *self, PyObject *noargs)
{
 PyObject *b, *view = NULL;
 Py_buffer info;
 Py_ssize_t shape[3] = {2, 2, 3};
 Py_ssize_t strides[3] = {6, 3, 1};
 const char *cp = "abcdefghijkl";
 b = PyBytes_FromString(cp);
 if (b == NULL)
 return NULL;
 if (PyObject_GetBuffer(b, &info, PyBUF_FULL_RO) < 0)
 goto done;
 /* reshape */
 info.ndim = 3;
 info.shape = shape;
 info.strides = strides;
 view = PyMemoryView_FromBuffer(&info);
 /* release resources allocated for Py_buffer struct 
 before it goes out of scope */
 PyBuffer_Release(&info);
 done:
 Py_DECREF(b);
 return view;
}
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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue15821>
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