Issue #18287: PyType_Ready() now checks that tp_name is not NULL.

Original patch by Niklas Koep.

2 files changed, 5 insertions, 2 deletions

diff --git a/Doc/c-api/typeobj.rst b/Doc/c-api/typeobj.rst
index 2c448a0..25e6c83 100644
--- a/Doc/c-api/typeobj.rst
+++ b/Doc/c-api/typeobj.rst
@@ -116,7 +116,8 @@ type objects) *must* have the :attr:`ob_size` field.
    If no dot is present, the entire :c:member:`~PyTypeObject.tp_name` field is made accessible as the
    :attr:`~definition.__name__` attribute, and the :attr:`__module__` attribute is undefined
    (unless explicitly set in the dictionary, as explained above).  This means your
-   type will be impossible to pickle.
+   type will be impossible to pickle.  Additionally, it will not be listed in
+   module documentations created with pydoc.
 
    This field is not inherited by subtypes.
 
diff --git a/Doc/extending/newtypes.rst b/Doc/extending/newtypes.rst
index a69f114..4a6e26c 100644
--- a/Doc/extending/newtypes.rst
+++ b/Doc/extending/newtypes.rst
@@ -129,7 +129,9 @@ our objects and in some error messages, for example::
 
 Note that the name is a dotted name that includes both the module name and the
 name of the type within the module. The module in this case is :mod:`noddy` and
-the type is :class:`Noddy`, so we set the type name to :class:`noddy.Noddy`. ::
+the type is :class:`Noddy`, so we set the type name to :class:`noddy.Noddy`.
+One side effect of using an undotted name is that the pydoc documentation tool
+will not list the new type in the module documentation. ::
 
    sizeof(noddy_NoddyObject),  /* tp_basicsize */