Issue #23352: Document that Py_buffer.suboffsets must be NULL if no suboffsets
are required.
diff --git a/Doc/c-api/buffer.rst b/Doc/c-api/buffer.rst
index 230c6a9..9cfd152 100644
--- a/Doc/c-api/buffer.rst
+++ b/Doc/c-api/buffer.rst
@@ -198,6 +198,9 @@
indicates that no de-referencing should occur (striding in a contiguous
memory block).
+ If all suboffsets are negative (i.e. no de-referencing is needed, then
+ this field must be NULL (the default value).
+
This type of array representation is used by the Python Imaging Library
(PIL). See `complex arrays`_ for further information how to access elements
of such an array.