don't force anyone to upgrade

vstinner · vstinner · commit 24c895bdfdf2 · 2018-07-31T18:14:43.000+02:00
diff --git a/doc/index.rst b/doc/index.rst
@@ -25,6 +25,10 @@ The current C API has multiple issues:
 * :ref:`Python debug build <debug-build>` is currently mostly unusable in
   practice, making development of C extension harder, especially debugging.
 
+Existing C extensions will still be supported and will not have to be modified.
+The :ref:`old C API <old-c-api>` is not deprecated and there is no plan
+penalize users of the old C API.
+
 Pages
 =====
 
diff --git a/doc/type_object.rst b/doc/type_object.rst
@@ -120,6 +120,11 @@ Later initialized by::
     ((PyTypeObject *)v)->tp_new = NULL;
     _curses_panelstate(m)->PyCursesPanel_Type = v;
 
+Missing fields:
+
+* To provide a __dict__ in a defined C type, tp_dict_offset slot must be set,
+  but this slot is missing from the stable ABI.
+* Same issue with tp_weaklistoffset
 
 Remove cross-version binary compatibility
 =========================================
