Issue #4129: int -> Py_ssize_t documentation.
diff --git a/Doc/c-api/objbuffer.rst b/Doc/c-api/objbuffer.rst
index 13ccd6b..93f5ff0 100644
--- a/Doc/c-api/objbuffer.rst
+++ b/Doc/c-api/objbuffer.rst
@@ -23,6 +23,10 @@
.. versionadded:: 1.6
+ .. versionchanged:: 2.5
+ This function used an :ctype:`int *` type for *buffer_len*. This might
+ require changes in your code for properly supporting 64-bit systems.
+
.. cfunction:: int PyObject_AsReadBuffer(PyObject *obj, const void **buffer, Py_ssize_t *buffer_len)
@@ -34,6 +38,10 @@
.. versionadded:: 1.6
+ .. versionchanged:: 2.5
+ This function used an :ctype:`int *` type for *buffer_len*. This might
+ require changes in your code for properly supporting 64-bit systems.
+
.. cfunction:: int PyObject_CheckReadBuffer(PyObject *o)
@@ -52,3 +60,7 @@
.. versionadded:: 1.6
+ .. versionchanged:: 2.5
+ This function used an :ctype:`int *` type for *buffer_len*. This might
+ require changes in your code for properly supporting 64-bit systems.
+