Update news and whatsnew

Author: sergey-miryanov

Doc/whatsnew/3.14.rst

@@ -532,7 +532,8 @@ ctypes
 
 * Move :func:`ctypes.POINTER` types cache from the global ``_pointer_type_cache``
   to the corresponding :mod:`ctypes` types. This will stop the cache from
-  growing without limits in some situations.
+  growing without limits in some situations. Also :mod:`ctypes` pointer types
+  can be accessed with ``__pointer_type__`` attribute from corresponding type.
   (Contributed by Sergey Miryanov in :gh:`100926`).
 
 datetime

Misc/NEWS.d/next/Library/2025-03-17-23-07-57.gh-issue-100926.B8gcbz.rst

@@ -1,2 +1,7 @@
 Move :func:`ctypes.POINTER` types cache from the global ``_pointer_type_cache``
 to the corresponding :mod:`ctypes` types to avoid unlimited growth of the cache.
+As from now, :mod:`ctypes` pointer types can be accessed with
+``__pointer_type__`` attribute. :func:`ctypes.POINTER` checks this attribute
+first before creating a new pointer type, so if needed to mimic :mod:`ctypes`
+pointer type then type should have this attribute
+(see PyCSimpleTypeAsMetaclassTest for example).