* Improve code for the empty frozenset singleton:

  - Handle both frozenset() and frozenset([]).
  - Do not use singleton for frozenset subclasses.
  - Finalize the singleton.
  - Add test cases.
* Factor-out set_update_internal() from set_update().  Simplifies the
  code for several internal callers.
* Factor constant expressions out of loop in set_merge_internal().
* Minor comment touch-ups.

2 files changed, 2 insertions, 2 deletions

diff --git a/Include/pythonrun.h b/Include/pythonrun.h
index 4afab88..f461d13 100644
--- a/Include/pythonrun.h
+++ b/Include/pythonrun.h
@@ -115,6 +115,7 @@ PyAPI_FUNC(void) PyFrame_Fini(void);
 PyAPI_FUNC(void) PyCFunction_Fini(void);
 PyAPI_FUNC(void) PyTuple_Fini(void);
 PyAPI_FUNC(void) PyList_Fini(void);
+PyAPI_FUNC(void) PySet_Fini(void);
 PyAPI_FUNC(void) PyString_Fini(void);
 PyAPI_FUNC(void) PyInt_Fini(void);
 PyAPI_FUNC(void) PyFloat_Fini(void);
diff --git a/Include/setobject.h b/Include/setobject.h
index 8569ed1..aa4bb9f 100644
--- a/Include/setobject.h
+++ b/Include/setobject.h
@@ -42,8 +42,7 @@ struct _setobject {
 
 	/* table points to smalltable for small tables, else to
 	 * additional malloc'ed memory.  table is never NULL!  This rule
-	 * saves repeated runtime null-tests in the workhorse getitem and
-	 * setitem calls.
+	 * saves repeated runtime null-tests.
 	 */
 	setentry *table;
 	setentry *(*lookup)(PySetObject *so, PyObject *key, long hash);