Issue #4580: slicing of memoryviews when itemsize != 1 is wrong.
Also fix len() to return number of items rather than length in bytes.
I'm sorry it was not possible for me to work on this without reindenting
a bit some stuff around. The indentation in memoryobject.c is a mess,
I'll open a separate bug for it.
diff --git a/Include/object.h b/Include/object.h
index 16708f9..0d20ecc 100644
--- a/Include/object.h
+++ b/Include/object.h
@@ -144,16 +144,18 @@
typedef struct bufferinfo {
void *buf;
PyObject *obj; /* owned reference */
- Py_ssize_t len;
- Py_ssize_t itemsize; /* This is Py_ssize_t so it can be
- pointed to by strides in simple case.*/
- int readonly;
- int ndim;
- char *format;
- Py_ssize_t *shape;
- Py_ssize_t *strides;
- Py_ssize_t *suboffsets;
- void *internal;
+ Py_ssize_t len;
+ Py_ssize_t itemsize; /* This is Py_ssize_t so it can be
+ pointed to by strides in simple case.*/
+ int readonly;
+ int ndim;
+ char *format;
+ Py_ssize_t *shape;
+ Py_ssize_t *strides;
+ Py_ssize_t *suboffsets;
+ Py_ssize_t smalltable[2]; /* static store for shape and strides of
+ mono-dimensional buffers. */
+ void *internal;
} Py_buffer;
typedef int (*getbufferproc)(PyObject *, Py_buffer *, int);