bpo-33029: Fix signatures of getter and setter functions. (GH-10746)


Fix also return type for few other functions (clear, releasebuffer).
(cherry picked from commit d4f9cf5545d6d8844e0726552ef2e366f5cc3abd)

Co-authored-by: Serhiy Storchaka <storchaka@gmail.com>
diff --git a/Modules/_asynciomodule.c b/Modules/_asynciomodule.c
index 809879a..5816a67 100644
--- a/Modules/_asynciomodule.c
+++ b/Modules/_asynciomodule.c
@@ -1094,7 +1094,7 @@
 }
 
 static PyObject *
-FutureObj_get_blocking(FutureObj *fut)
+FutureObj_get_blocking(FutureObj *fut, void *Py_UNUSED(ignored))
 {
     if (future_is_alive(fut) && fut->fut_blocking) {
         Py_RETURN_TRUE;
@@ -1105,7 +1105,7 @@
 }
 
 static int
-FutureObj_set_blocking(FutureObj *fut, PyObject *val)
+FutureObj_set_blocking(FutureObj *fut, PyObject *val, void *Py_UNUSED(ignored))
 {
     if (future_ensure_alive(fut)) {
         return -1;
@@ -1120,7 +1120,7 @@
 }
 
 static PyObject *
-FutureObj_get_log_traceback(FutureObj *fut)
+FutureObj_get_log_traceback(FutureObj *fut, void *Py_UNUSED(ignored))
 {
     ENSURE_FUTURE_ALIVE(fut)
     if (fut->fut_log_tb) {
@@ -1132,7 +1132,7 @@
 }
 
 static int
-FutureObj_set_log_traceback(FutureObj *fut, PyObject *val)
+FutureObj_set_log_traceback(FutureObj *fut, PyObject *val, void *Py_UNUSED(ignored))
 {
     int is_true = PyObject_IsTrue(val);
     if (is_true < 0) {
@@ -1148,7 +1148,7 @@
 }
 
 static PyObject *
-FutureObj_get_loop(FutureObj *fut)
+FutureObj_get_loop(FutureObj *fut, void *Py_UNUSED(ignored))
 {
     if (!future_is_alive(fut)) {
         Py_RETURN_NONE;
@@ -1158,7 +1158,7 @@
 }
 
 static PyObject *
-FutureObj_get_callbacks(FutureObj *fut)
+FutureObj_get_callbacks(FutureObj *fut, void *Py_UNUSED(ignored))
 {
     Py_ssize_t i;
 
@@ -1210,7 +1210,7 @@
 }
 
 static PyObject *
-FutureObj_get_result(FutureObj *fut)
+FutureObj_get_result(FutureObj *fut, void *Py_UNUSED(ignored))
 {
     ENSURE_FUTURE_ALIVE(fut)
     if (fut->fut_result == NULL) {
@@ -1221,7 +1221,7 @@
 }
 
 static PyObject *
-FutureObj_get_exception(FutureObj *fut)
+FutureObj_get_exception(FutureObj *fut, void *Py_UNUSED(ignored))
 {
     ENSURE_FUTURE_ALIVE(fut)
     if (fut->fut_exception == NULL) {
@@ -1232,7 +1232,7 @@
 }
 
 static PyObject *
-FutureObj_get_source_traceback(FutureObj *fut)
+FutureObj_get_source_traceback(FutureObj *fut, void *Py_UNUSED(ignored))
 {
     if (!future_is_alive(fut) || fut->fut_source_tb == NULL) {
         Py_RETURN_NONE;
@@ -1242,7 +1242,7 @@
 }
 
 static PyObject *
-FutureObj_get_state(FutureObj *fut)
+FutureObj_get_state(FutureObj *fut, void *Py_UNUSED(ignored))
 {
     _Py_IDENTIFIER(PENDING);
     _Py_IDENTIFIER(CANCELLED);
@@ -1723,7 +1723,7 @@
 }
 
 static PyObject *
-TaskStepMethWrapper_get___self__(TaskStepMethWrapper *o)
+TaskStepMethWrapper_get___self__(TaskStepMethWrapper *o, void *Py_UNUSED(ignored))
 {
     if (o->sw_task) {
         Py_INCREF(o->sw_task);
@@ -1995,7 +1995,7 @@
 }
 
 static PyObject *
-TaskObj_get_log_destroy_pending(TaskObj *task)
+TaskObj_get_log_destroy_pending(TaskObj *task, void *Py_UNUSED(ignored))
 {
     if (task->task_log_destroy_pending) {
         Py_RETURN_TRUE;
@@ -2006,7 +2006,7 @@
 }
 
 static int
-TaskObj_set_log_destroy_pending(TaskObj *task, PyObject *val)
+TaskObj_set_log_destroy_pending(TaskObj *task, PyObject *val, void *Py_UNUSED(ignored))
 {
     int is_true = PyObject_IsTrue(val);
     if (is_true < 0) {
@@ -2017,7 +2017,7 @@
 }
 
 static PyObject *
-TaskObj_get_must_cancel(TaskObj *task)
+TaskObj_get_must_cancel(TaskObj *task, void *Py_UNUSED(ignored))
 {
     if (task->task_must_cancel) {
         Py_RETURN_TRUE;
@@ -2028,7 +2028,7 @@
 }
 
 static PyObject *
-TaskObj_get_coro(TaskObj *task)
+TaskObj_get_coro(TaskObj *task, void *Py_UNUSED(ignored))
 {
     if (task->task_coro) {
         Py_INCREF(task->task_coro);
@@ -2039,7 +2039,7 @@
 }
 
 static PyObject *
-TaskObj_get_fut_waiter(TaskObj *task)
+TaskObj_get_fut_waiter(TaskObj *task, void *Py_UNUSED(ignored))
 {
     if (task->task_fut_waiter) {
         Py_INCREF(task->task_fut_waiter);
diff --git a/Modules/_collectionsmodule.c b/Modules/_collectionsmodule.c
index cfd8905..9b875e9 100644
--- a/Modules/_collectionsmodule.c
+++ b/Modules/_collectionsmodule.c
@@ -1542,7 +1542,7 @@
 }
 
 static PyObject *
-deque_get_maxlen(dequeobject *deque)
+deque_get_maxlen(dequeobject *deque, void *Py_UNUSED(ignored))
 {
     if (deque->maxlen < 0)
         Py_RETURN_NONE;
diff --git a/Modules/_csv.c b/Modules/_csv.c
index 180f3be..dd0b3c8 100644
--- a/Modules/_csv.c
+++ b/Modules/_csv.c
@@ -159,31 +159,31 @@
 }
 
 static PyObject *
-Dialect_get_lineterminator(DialectObj *self)
+Dialect_get_lineterminator(DialectObj *self, void *Py_UNUSED(ignored))
 {
     return get_string(self->lineterminator);
 }
 
 static PyObject *
-Dialect_get_delimiter(DialectObj *self)
+Dialect_get_delimiter(DialectObj *self, void *Py_UNUSED(ignored))
 {
     return get_nullchar_as_None(self->delimiter);
 }
 
 static PyObject *
-Dialect_get_escapechar(DialectObj *self)
+Dialect_get_escapechar(DialectObj *self, void *Py_UNUSED(ignored))
 {
     return get_nullchar_as_None(self->escapechar);
 }
 
 static PyObject *
-Dialect_get_quotechar(DialectObj *self)
+Dialect_get_quotechar(DialectObj *self, void *Py_UNUSED(ignored))
 {
     return get_nullchar_as_None(self->quotechar);
 }
 
 static PyObject *
-Dialect_get_quoting(DialectObj *self)
+Dialect_get_quoting(DialectObj *self, void *Py_UNUSED(ignored))
 {
     return PyLong_FromLong(self->quoting);
 }
diff --git a/Modules/_ctypes/_ctypes.c b/Modules/_ctypes/_ctypes.c
index 3ae6348..3bb9677 100644
--- a/Modules/_ctypes/_ctypes.c
+++ b/Modules/_ctypes/_ctypes.c
@@ -1161,7 +1161,7 @@
 */
 
 static int
-CharArray_set_raw(CDataObject *self, PyObject *value)
+CharArray_set_raw(CDataObject *self, PyObject *value, void *Py_UNUSED(ignored))
 {
     char *ptr;
     Py_ssize_t size;
@@ -1187,13 +1187,13 @@
 }
 
 static PyObject *
-CharArray_get_raw(CDataObject *self)
+CharArray_get_raw(CDataObject *self, void *Py_UNUSED(ignored))
 {
     return PyBytes_FromStringAndSize(self->b_ptr, self->b_size);
 }
 
 static PyObject *
-CharArray_get_value(CDataObject *self)
+CharArray_get_value(CDataObject *self, void *Py_UNUSED(ignored))
 {
     Py_ssize_t i;
     char *ptr = self->b_ptr;
@@ -1204,7 +1204,7 @@
 }
 
 static int
-CharArray_set_value(CDataObject *self, PyObject *value)
+CharArray_set_value(CDataObject *self, PyObject *value, void *Py_UNUSED(ignored))
 {
     char *ptr;
     Py_ssize_t size;
@@ -1249,7 +1249,7 @@
 
 #ifdef CTYPES_UNICODE
 static PyObject *
-WCharArray_get_value(CDataObject *self)
+WCharArray_get_value(CDataObject *self, void *Py_UNUSED(ignored))
 {
     Py_ssize_t i;
     wchar_t *ptr = (wchar_t *)self->b_ptr;
@@ -1260,7 +1260,7 @@
 }
 
 static int
-WCharArray_set_value(CDataObject *self, PyObject *value)
+WCharArray_set_value(CDataObject *self, PyObject *value, void *Py_UNUSED(ignored))
 {
     Py_ssize_t result = 0;
     Py_UNICODE *wstr;
@@ -3045,7 +3045,7 @@
 */
 
 static int
-PyCFuncPtr_set_errcheck(PyCFuncPtrObject *self, PyObject *ob)
+PyCFuncPtr_set_errcheck(PyCFuncPtrObject *self, PyObject *ob, void *Py_UNUSED(ignored))
 {
     if (ob && !PyCallable_Check(ob)) {
         PyErr_SetString(PyExc_TypeError,
@@ -3058,7 +3058,7 @@
 }
 
 static PyObject *
-PyCFuncPtr_get_errcheck(PyCFuncPtrObject *self)
+PyCFuncPtr_get_errcheck(PyCFuncPtrObject *self, void *Py_UNUSED(ignored))
 {
     if (self->errcheck) {
         Py_INCREF(self->errcheck);
@@ -3068,7 +3068,7 @@
 }
 
 static int
-PyCFuncPtr_set_restype(PyCFuncPtrObject *self, PyObject *ob)
+PyCFuncPtr_set_restype(PyCFuncPtrObject *self, PyObject *ob, void *Py_UNUSED(ignored))
 {
     if (ob == NULL) {
         Py_CLEAR(self->restype);
@@ -3089,7 +3089,7 @@
 }
 
 static PyObject *
-PyCFuncPtr_get_restype(PyCFuncPtrObject *self)
+PyCFuncPtr_get_restype(PyCFuncPtrObject *self, void *Py_UNUSED(ignored))
 {
     StgDictObject *dict;
     if (self->restype) {
@@ -3107,7 +3107,7 @@
 }
 
 static int
-PyCFuncPtr_set_argtypes(PyCFuncPtrObject *self, PyObject *ob)
+PyCFuncPtr_set_argtypes(PyCFuncPtrObject *self, PyObject *ob, void *Py_UNUSED(ignored))
 {
     PyObject *converters;
 
@@ -3126,7 +3126,7 @@
 }
 
 static PyObject *
-PyCFuncPtr_get_argtypes(PyCFuncPtrObject *self)
+PyCFuncPtr_get_argtypes(PyCFuncPtrObject *self, void *Py_UNUSED(ignored))
 {
     StgDictObject *dict;
     if (self->argtypes) {
@@ -4670,7 +4670,7 @@
 */
 
 static int
-Simple_set_value(CDataObject *self, PyObject *value)
+Simple_set_value(CDataObject *self, PyObject *value, void *Py_UNUSED(ignored))
 {
     PyObject *result;
     StgDictObject *dict = PyObject_stgdict((PyObject *)self);
@@ -4697,12 +4697,12 @@
     if (!PyArg_UnpackTuple(args, "__init__", 0, 1, &value))
         return -1;
     if (value)
-        return Simple_set_value(self, value);
+        return Simple_set_value(self, value, NULL);
     return 0;
 }
 
 static PyObject *
-Simple_get_value(CDataObject *self)
+Simple_get_value(CDataObject *self, void *Py_UNUSED(ignored))
 {
     StgDictObject *dict;
     dict = PyObject_stgdict((PyObject *)self);
@@ -4725,7 +4725,7 @@
         return self;
     }
     /* call stgdict->getfunc */
-    return Simple_get_value((CDataObject *)self);
+    return Simple_get_value((CDataObject *)self, NULL);
 }
 
 static PyMethodDef Simple_methods[] = {
@@ -4762,7 +4762,7 @@
                                    Py_TYPE(self)->tp_name, self);
     }
 
-    val = Simple_get_value(self);
+    val = Simple_get_value(self, NULL);
     if (val == NULL)
         return NULL;
 
diff --git a/Modules/_cursesmodule.c b/Modules/_cursesmodule.c
index 7936aef..8140c8a 100644
--- a/Modules/_cursesmodule.c
+++ b/Modules/_cursesmodule.c
@@ -1960,7 +1960,7 @@
 }
 
 static int
-PyCursesWindow_set_encoding(PyCursesWindowObject *self, PyObject *value)
+PyCursesWindow_set_encoding(PyCursesWindowObject *self, PyObject *value, void *Py_UNUSED(ignored))
 {
     PyObject *ascii;
     char *encoding;
diff --git a/Modules/_io/bytesio.c b/Modules/_io/bytesio.c
index ba33f8c..e4d637c 100644
--- a/Modules/_io/bytesio.c
+++ b/Modules/_io/bytesio.c
@@ -201,7 +201,7 @@
 }
 
 static PyObject *
-bytesio_get_closed(bytesio *self)
+bytesio_get_closed(bytesio *self, void *Py_UNUSED(ignored))
 {
     if (self->buf == NULL) {
         Py_RETURN_TRUE;
diff --git a/Modules/_pickle.c b/Modules/_pickle.c
index 03f575e..a1a90bd 100644
--- a/Modules/_pickle.c
+++ b/Modules/_pickle.c
@@ -4563,13 +4563,13 @@
 /*****************************************************************************/
 
 static PyObject *
-Pickler_get_memo(PicklerObject *self)
+Pickler_get_memo(PicklerObject *self, void *Py_UNUSED(ignored))
 {
     return PicklerMemoProxy_New(self);
 }
 
 static int
-Pickler_set_memo(PicklerObject *self, PyObject *obj)
+Pickler_set_memo(PicklerObject *self, PyObject *obj, void *Py_UNUSED(ignored))
 {
     PyMemoTable *new_memo = NULL;
 
@@ -4631,7 +4631,7 @@
 }
 
 static PyObject *
-Pickler_get_persid(PicklerObject *self)
+Pickler_get_persid(PicklerObject *self, void *Py_UNUSED(ignored))
 {
     if (self->pers_func == NULL) {
         PyErr_SetString(PyExc_AttributeError, "persistent_id");
@@ -4641,7 +4641,7 @@
 }
 
 static int
-Pickler_set_persid(PicklerObject *self, PyObject *value)
+Pickler_set_persid(PicklerObject *self, PyObject *value, void *Py_UNUSED(ignored))
 {
     if (value == NULL) {
         PyErr_SetString(PyExc_TypeError,
@@ -6999,13 +6999,13 @@
 
 
 static PyObject *
-Unpickler_get_memo(UnpicklerObject *self)
+Unpickler_get_memo(UnpicklerObject *self, void *Py_UNUSED(ignored))
 {
     return UnpicklerMemoProxy_New(self);
 }
 
 static int
-Unpickler_set_memo(UnpicklerObject *self, PyObject *obj)
+Unpickler_set_memo(UnpicklerObject *self, PyObject *obj, void *Py_UNUSED(ignored))
 {
     PyObject **new_memo;
     size_t new_memo_size = 0;
@@ -7082,7 +7082,7 @@
 }
 
 static PyObject *
-Unpickler_get_persload(UnpicklerObject *self)
+Unpickler_get_persload(UnpicklerObject *self, void *Py_UNUSED(ignored))
 {
     if (self->pers_func == NULL) {
         PyErr_SetString(PyExc_AttributeError, "persistent_load");
@@ -7092,7 +7092,7 @@
 }
 
 static int
-Unpickler_set_persload(UnpicklerObject *self, PyObject *value)
+Unpickler_set_persload(UnpicklerObject *self, PyObject *value, void *Py_UNUSED(ignored))
 {
     if (value == NULL) {
         PyErr_SetString(PyExc_TypeError,
diff --git a/Modules/_sqlite/connection.c b/Modules/_sqlite/connection.c
index 65f173c..3d14865 100644
--- a/Modules/_sqlite/connection.c
+++ b/Modules/_sqlite/connection.c
@@ -55,7 +55,7 @@
     NULL
 };
 
-static int pysqlite_connection_set_isolation_level(pysqlite_Connection* self, PyObject* isolation_level);
+static int pysqlite_connection_set_isolation_level(pysqlite_Connection* self, PyObject* isolation_level, void *Py_UNUSED(ignored));
 static void _pysqlite_drop_unused_cursor_references(pysqlite_Connection* self);
 
 
@@ -147,7 +147,7 @@
         Py_INCREF(isolation_level);
     }
     Py_CLEAR(self->isolation_level);
-    if (pysqlite_connection_set_isolation_level(self, isolation_level) < 0) {
+    if (pysqlite_connection_set_isolation_level(self, isolation_level, NULL) < 0) {
         Py_DECREF(isolation_level);
         return -1;
     }
@@ -1139,7 +1139,8 @@
     Py_RETURN_FALSE;
 }
 
-static int pysqlite_connection_set_isolation_level(pysqlite_Connection* self, PyObject* isolation_level)
+static int
+pysqlite_connection_set_isolation_level(pysqlite_Connection* self, PyObject* isolation_level, void *Py_UNUSED(ignored))
 {
     if (isolation_level == Py_None) {
         PyObject *res = pysqlite_connection_commit(self, NULL);
diff --git a/Modules/_sqlite/row.c b/Modules/_sqlite/row.c
index ec2c788..122bee0 100644
--- a/Modules/_sqlite/row.c
+++ b/Modules/_sqlite/row.c
@@ -150,7 +150,8 @@
     }
 }
 
-Py_ssize_t pysqlite_row_length(pysqlite_Row* self, PyObject* args, PyObject* kwargs)
+static Py_ssize_t
+pysqlite_row_length(pysqlite_Row* self)
 {
     return PyTuple_GET_SIZE(self->data);
 }
diff --git a/Modules/_sre.c b/Modules/_sre.c
index b6be6f6..d2ea62d 100644
--- a/Modules/_sre.c
+++ b/Modules/_sre.c
@@ -1312,7 +1312,7 @@
 
 /* PatternObject's 'groupindex' method. */
 static PyObject *
-pattern_groupindex(PatternObject *self)
+pattern_groupindex(PatternObject *self, void *Py_UNUSED(ignored))
 {
     if (self->groupindex == NULL)
         return PyDict_New();
@@ -2279,7 +2279,7 @@
     For 0 returns the entire match.");
 
 static PyObject *
-match_lastindex_get(MatchObject *self)
+match_lastindex_get(MatchObject *self, void *Py_UNUSED(ignored))
 {
     if (self->lastindex >= 0)
         return PyLong_FromSsize_t(self->lastindex);
@@ -2287,7 +2287,7 @@
 }
 
 static PyObject *
-match_lastgroup_get(MatchObject *self)
+match_lastgroup_get(MatchObject *self, void *Py_UNUSED(ignored))
 {
     if (self->pattern->indexgroup &&
         self->lastindex >= 0 &&
@@ -2302,7 +2302,7 @@
 }
 
 static PyObject *
-match_regs_get(MatchObject *self)
+match_regs_get(MatchObject *self, void *Py_UNUSED(ignored))
 {
     if (self->regs) {
         Py_INCREF(self->regs);
diff --git a/Modules/_testbuffer.c b/Modules/_testbuffer.c
index 669794d..a16b96db 100644
--- a/Modules/_testbuffer.c
+++ b/Modules/_testbuffer.c
@@ -1531,7 +1531,7 @@
     return 0;
 }
 
-static int
+static void
 ndarray_releasebuf(NDArrayObject *self, Py_buffer *view)
 {
     if (!ND_IS_CONSUMER(self)) {
@@ -1539,8 +1539,6 @@
         if (--ndbuf->exports == 0 && ndbuf != self->head)
             ndbuf_delete(self, ndbuf);
     }
-
-    return 0;
 }
 
 static PyBufferProcs ndarray_as_buffer = {
diff --git a/Modules/_tkinter.c b/Modules/_tkinter.c
index fa26859..a96924c 100644
--- a/Modules/_tkinter.c
+++ b/Modules/_tkinter.c
@@ -842,7 +842,7 @@
 }
 
 static PyObject *
-PyTclObject_str(PyTclObject *self, void *ignored)
+PyTclObject_str(PyTclObject *self)
 {
     if (self->string) {
         Py_INCREF(self->string);
@@ -855,7 +855,7 @@
 static PyObject *
 PyTclObject_repr(PyTclObject *self)
 {
-    PyObject *repr, *str = PyTclObject_str(self, NULL);
+    PyObject *repr, *str = PyTclObject_str(self);
     if (str == NULL)
         return NULL;
     repr = PyUnicode_FromFormat("<%s object: %R>",
diff --git a/Modules/cjkcodecs/multibytecodec.c b/Modules/cjkcodecs/multibytecodec.c
index 22172b0..4d0aaf3 100644
--- a/Modules/cjkcodecs/multibytecodec.c
+++ b/Modules/cjkcodecs/multibytecodec.c
@@ -108,7 +108,7 @@
 }
 
 static PyObject *
-codecctx_errors_get(MultibyteStatefulCodecContext *self)
+codecctx_errors_get(MultibyteStatefulCodecContext *self, void *Py_UNUSED(ignored))
 {
     const char *errors;
 
diff --git a/Modules/mmapmodule.c b/Modules/mmapmodule.c
index ba42f73..f957e2c 100644
--- a/Modules/mmapmodule.c
+++ b/Modules/mmapmodule.c
@@ -653,7 +653,7 @@
 }
 
 static PyObject *
-mmap_closed_get(mmap_object *self)
+mmap_closed_get(mmap_object *self, void *Py_UNUSED(ignored))
 {
 #ifdef MS_WINDOWS
     return PyBool_FromLong(self->map_handle == NULL ? 1 : 0);
diff --git a/Modules/selectmodule.c b/Modules/selectmodule.c
index d6b8fc1..63266af 100644
--- a/Modules/selectmodule.c
+++ b/Modules/selectmodule.c
@@ -1023,7 +1023,7 @@
 object will raise an exception.");
 
 static PyObject*
-devpoll_get_closed(devpollObject *self)
+devpoll_get_closed(devpollObject *self, void *Py_UNUSED(ignored))
 {
     if (self->fd_devpoll < 0)
         Py_RETURN_TRUE;
@@ -1346,7 +1346,7 @@
 object will raise an exception.");
 
 static PyObject*
-pyepoll_get_closed(pyEpoll_Object *self)
+pyepoll_get_closed(pyEpoll_Object *self, void *Py_UNUSED(ignored))
 {
     if (self->epfd < 0)
         Py_RETURN_TRUE;
@@ -2072,7 +2072,7 @@
 object will raise an exception.");
 
 static PyObject*
-kqueue_queue_get_closed(kqueue_queue_Object *self)
+kqueue_queue_get_closed(kqueue_queue_Object *self, void *Py_UNUSED(ignored))
 {
     if (self->kqfd < 0)
         Py_RETURN_TRUE;
diff --git a/Modules/xxsubtype.c b/Modules/xxsubtype.c
index 11242d7..d2593b1 100644
--- a/Modules/xxsubtype.c
+++ b/Modules/xxsubtype.c
@@ -89,7 +89,7 @@
 }
 
 static PyObject *
-spamlist_state_get(spamlistobject *self)
+spamlist_state_get(spamlistobject *self, void *Py_UNUSED(ignored))
 {
     return PyLong_FromLong(self->state);
 }
diff --git a/Objects/cellobject.c b/Objects/cellobject.c
index 7b05e61..6f8915a 100644
--- a/Objects/cellobject.c
+++ b/Objects/cellobject.c
@@ -111,7 +111,7 @@
 }
 
 static int
-cell_set_contents(PyCellObject *op, PyObject *obj)
+cell_set_contents(PyCellObject *op, PyObject *obj, void *Py_UNUSED(ignored))
 {
     Py_XINCREF(obj);
     Py_XSETREF(op->ob_ref, obj);
diff --git a/Objects/descrobject.c b/Objects/descrobject.c
index 6014039..c6f7e55 100644
--- a/Objects/descrobject.c
+++ b/Objects/descrobject.c
@@ -439,7 +439,7 @@
 }
 
 static PyObject *
-descr_get_qualname(PyDescrObject *descr)
+descr_get_qualname(PyDescrObject *descr, void *Py_UNUSED(ignored))
 {
     if (descr->d_qualname == NULL)
         descr->d_qualname = calculate_qualname(descr);
@@ -1108,7 +1108,7 @@
 };
 
 static PyObject *
-wrapper_objclass(wrapperobject *wp)
+wrapper_objclass(wrapperobject *wp, void *Py_UNUSED(ignored))
 {
     PyObject *c = (PyObject *)PyDescr_TYPE(wp->descr);
 
@@ -1117,7 +1117,7 @@
 }
 
 static PyObject *
-wrapper_name(wrapperobject *wp)
+wrapper_name(wrapperobject *wp, void *Py_UNUSED(ignored))
 {
     const char *s = wp->descr->d_base->name;
 
@@ -1125,21 +1125,21 @@
 }
 
 static PyObject *
-wrapper_doc(wrapperobject *wp, void *closure)
+wrapper_doc(wrapperobject *wp, void *Py_UNUSED(ignored))
 {
     return _PyType_GetDocFromInternalDoc(wp->descr->d_base->name, wp->descr->d_base->doc);
 }
 
 static PyObject *
-wrapper_text_signature(wrapperobject *wp, void *closure)
+wrapper_text_signature(wrapperobject *wp, void *Py_UNUSED(ignored))
 {
     return _PyType_GetTextSignatureFromInternalDoc(wp->descr->d_base->name, wp->descr->d_base->doc);
 }
 
 static PyObject *
-wrapper_qualname(wrapperobject *wp)
+wrapper_qualname(wrapperobject *wp, void *Py_UNUSED(ignored))
 {
-    return descr_get_qualname((PyDescrObject *)wp->descr);
+    return descr_get_qualname((PyDescrObject *)wp->descr, NULL);
 }
 
 static PyGetSetDef wrapper_getsets[] = {
diff --git a/Objects/exceptions.c b/Objects/exceptions.c
index 2cce40f..03bdf79 100644
--- a/Objects/exceptions.c
+++ b/Objects/exceptions.c
@@ -181,7 +181,7 @@
 };
 
 static PyObject *
-BaseException_get_args(PyBaseExceptionObject *self)
+BaseException_get_args(PyBaseExceptionObject *self, void *Py_UNUSED(ignored))
 {
     if (self->args == NULL) {
         Py_RETURN_NONE;
@@ -191,7 +191,7 @@
 }
 
 static int
-BaseException_set_args(PyBaseExceptionObject *self, PyObject *val)
+BaseException_set_args(PyBaseExceptionObject *self, PyObject *val, void *Py_UNUSED(ignored))
 {
     PyObject *seq;
     if (val == NULL) {
@@ -206,7 +206,7 @@
 }
 
 static PyObject *
-BaseException_get_tb(PyBaseExceptionObject *self)
+BaseException_get_tb(PyBaseExceptionObject *self, void *Py_UNUSED(ignored))
 {
     if (self->traceback == NULL) {
         Py_RETURN_NONE;
@@ -216,7 +216,7 @@
 }
 
 static int
-BaseException_set_tb(PyBaseExceptionObject *self, PyObject *tb)
+BaseException_set_tb(PyBaseExceptionObject *self, PyObject *tb, void *Py_UNUSED(ignored))
 {
     if (tb == NULL) {
         PyErr_SetString(PyExc_TypeError, "__traceback__ may not be deleted");
@@ -234,7 +234,8 @@
 }
 
 static PyObject *
-BaseException_get_context(PyObject *self) {
+BaseException_get_context(PyObject *self, void *Py_UNUSED(ignored))
+{
     PyObject *res = PyException_GetContext(self);
     if (res)
         return res;  /* new reference already returned above */
@@ -242,7 +243,8 @@
 }
 
 static int
-BaseException_set_context(PyObject *self, PyObject *arg) {
+BaseException_set_context(PyObject *self, PyObject *arg, void *Py_UNUSED(ignored))
+{
     if (arg == NULL) {
         PyErr_SetString(PyExc_TypeError, "__context__ may not be deleted");
         return -1;
@@ -261,7 +263,8 @@
 }
 
 static PyObject *
-BaseException_get_cause(PyObject *self) {
+BaseException_get_cause(PyObject *self, void *Py_UNUSED(ignored))
+{
     PyObject *res = PyException_GetCause(self);
     if (res)
         return res;  /* new reference already returned above */
@@ -269,7 +272,8 @@
 }
 
 static int
-BaseException_set_cause(PyObject *self, PyObject *arg) {
+BaseException_set_cause(PyObject *self, PyObject *arg, void *Py_UNUSED(ignored))
+{
     if (arg == NULL) {
         PyErr_SetString(PyExc_TypeError, "__cause__ may not be deleted");
         return -1;
@@ -292,10 +296,10 @@
     {"__dict__", PyObject_GenericGetDict, PyObject_GenericSetDict},
     {"args", (getter)BaseException_get_args, (setter)BaseException_set_args},
     {"__traceback__", (getter)BaseException_get_tb, (setter)BaseException_set_tb},
-    {"__context__", (getter)BaseException_get_context,
-     (setter)BaseException_set_context, PyDoc_STR("exception context")},
-    {"__cause__", (getter)BaseException_get_cause,
-     (setter)BaseException_set_cause, PyDoc_STR("exception cause")},
+    {"__context__", BaseException_get_context,
+     BaseException_set_context, PyDoc_STR("exception context")},
+    {"__cause__", BaseException_get_cause,
+     BaseException_set_cause, PyDoc_STR("exception cause")},
     {NULL},
 };
 
@@ -310,7 +314,7 @@
 
 int
 PyException_SetTraceback(PyObject *self, PyObject *tb) {
-    return BaseException_set_tb((PyBaseExceptionObject *)self, tb);
+    return BaseException_set_tb((PyBaseExceptionObject *)self, tb, NULL);
 }
 
 PyObject *
diff --git a/Objects/frameobject.c b/Objects/frameobject.c
index f518dc4..4ef10d0 100644
--- a/Objects/frameobject.c
+++ b/Objects/frameobject.c
@@ -64,7 +64,7 @@
  *    that time.
  */
 static int
-frame_setlineno(PyFrameObject *f, PyObject* p_new_lineno)
+frame_setlineno(PyFrameObject *f, PyObject* p_new_lineno, void *Py_UNUSED(ignored))
 {
     int new_lineno = 0;                 /* The new value of f_lineno */
     long l_new_lineno;
@@ -519,7 +519,7 @@
     return 0;
 }
 
-static void
+static int
 frame_tp_clear(PyFrameObject *f)
 {
     PyObject **fastlocals, **p, **oldtop;
@@ -547,6 +547,7 @@
         for (p = f->f_valuestack; p < oldtop; p++)
             Py_CLEAR(*p);
     }
+    return 0;
 }
 
 static PyObject *
@@ -561,7 +562,7 @@
         _PyGen_Finalize(f->f_gen);
         assert(f->f_gen == NULL);
     }
-    frame_tp_clear(f);
+    (void)frame_tp_clear(f);
     Py_RETURN_NONE;
 }
 
diff --git a/Objects/funcobject.c b/Objects/funcobject.c
index 241685d..413a590 100644
--- a/Objects/funcobject.c
+++ b/Objects/funcobject.c
@@ -242,14 +242,14 @@
 };
 
 static PyObject *
-func_get_code(PyFunctionObject *op)
+func_get_code(PyFunctionObject *op, void *Py_UNUSED(ignored))
 {
     Py_INCREF(op->func_code);
     return op->func_code;
 }
 
 static int
-func_set_code(PyFunctionObject *op, PyObject *value)
+func_set_code(PyFunctionObject *op, PyObject *value, void *Py_UNUSED(ignored))
 {
     Py_ssize_t nfree, nclosure;
 
@@ -277,14 +277,14 @@
 }
 
 static PyObject *
-func_get_name(PyFunctionObject *op)
+func_get_name(PyFunctionObject *op, void *Py_UNUSED(ignored))
 {
     Py_INCREF(op->func_name);
     return op->func_name;
 }
 
 static int
-func_set_name(PyFunctionObject *op, PyObject *value)
+func_set_name(PyFunctionObject *op, PyObject *value, void *Py_UNUSED(ignored))
 {
     /* Not legal to del f.func_name or to set it to anything
      * other than a string object. */
@@ -299,14 +299,14 @@
 }
 
 static PyObject *
-func_get_qualname(PyFunctionObject *op)
+func_get_qualname(PyFunctionObject *op, void *Py_UNUSED(ignored))
 {
     Py_INCREF(op->func_qualname);
     return op->func_qualname;
 }
 
 static int
-func_set_qualname(PyFunctionObject *op, PyObject *value)
+func_set_qualname(PyFunctionObject *op, PyObject *value, void *Py_UNUSED(ignored))
 {
     /* Not legal to del f.__qualname__ or to set it to anything
      * other than a string object. */
@@ -321,7 +321,7 @@
 }
 
 static PyObject *
-func_get_defaults(PyFunctionObject *op)
+func_get_defaults(PyFunctionObject *op, void *Py_UNUSED(ignored))
 {
     if (op->func_defaults == NULL) {
         Py_RETURN_NONE;
@@ -331,7 +331,7 @@
 }
 
 static int
-func_set_defaults(PyFunctionObject *op, PyObject *value)
+func_set_defaults(PyFunctionObject *op, PyObject *value, void *Py_UNUSED(ignored))
 {
     /* Legal to del f.func_defaults.
      * Can only set func_defaults to NULL or a tuple. */
@@ -348,7 +348,7 @@
 }
 
 static PyObject *
-func_get_kwdefaults(PyFunctionObject *op)
+func_get_kwdefaults(PyFunctionObject *op, void *Py_UNUSED(ignored))
 {
     if (op->func_kwdefaults == NULL) {
         Py_RETURN_NONE;
@@ -358,7 +358,7 @@
 }
 
 static int
-func_set_kwdefaults(PyFunctionObject *op, PyObject *value)
+func_set_kwdefaults(PyFunctionObject *op, PyObject *value, void *Py_UNUSED(ignored))
 {
     if (value == Py_None)
         value = NULL;
@@ -375,7 +375,7 @@
 }
 
 static PyObject *
-func_get_annotations(PyFunctionObject *op)
+func_get_annotations(PyFunctionObject *op, void *Py_UNUSED(ignored))
 {
     if (op->func_annotations == NULL) {
         op->func_annotations = PyDict_New();
@@ -387,7 +387,7 @@
 }
 
 static int
-func_set_annotations(PyFunctionObject *op, PyObject *value)
+func_set_annotations(PyFunctionObject *op, PyObject *value, void *Py_UNUSED(ignored))
 {
     if (value == Py_None)
         value = NULL;
diff --git a/Objects/genobject.c b/Objects/genobject.c
index 793a809..b0e8770 100644
--- a/Objects/genobject.c
+++ b/Objects/genobject.c
@@ -644,14 +644,14 @@
 }
 
 static PyObject *
-gen_get_name(PyGenObject *op)
+gen_get_name(PyGenObject *op, void *Py_UNUSED(ignored))
 {
     Py_INCREF(op->gi_name);
     return op->gi_name;
 }
 
 static int
-gen_set_name(PyGenObject *op, PyObject *value)
+gen_set_name(PyGenObject *op, PyObject *value, void *Py_UNUSED(ignored))
 {
     /* Not legal to del gen.gi_name or to set it to anything
      * other than a string object. */
@@ -666,14 +666,14 @@
 }
 
 static PyObject *
-gen_get_qualname(PyGenObject *op)
+gen_get_qualname(PyGenObject *op, void *Py_UNUSED(ignored))
 {
     Py_INCREF(op->gi_qualname);
     return op->gi_qualname;
 }
 
 static int
-gen_set_qualname(PyGenObject *op, PyObject *value)
+gen_set_qualname(PyGenObject *op, PyObject *value, void *Py_UNUSED(ignored))
 {
     /* Not legal to del gen.__qualname__ or to set it to anything
      * other than a string object. */
@@ -688,7 +688,7 @@
 }
 
 static PyObject *
-gen_getyieldfrom(PyGenObject *gen)
+gen_getyieldfrom(PyGenObject *gen, void *Py_UNUSED(ignored))
 {
     PyObject *yf = _PyGen_yf(gen);
     if (yf == NULL)
@@ -927,7 +927,7 @@
 }
 
 static PyObject *
-coro_get_cr_await(PyCoroObject *coro)
+coro_get_cr_await(PyCoroObject *coro, void *Py_UNUSED(ignored))
 {
     PyObject *yf = _PyGen_yf((PyGenObject *) coro);
     if (yf == NULL)
diff --git a/Objects/memoryobject.c b/Objects/memoryobject.c
index ccf45ff..ce8fa3f 100644
--- a/Objects/memoryobject.c
+++ b/Objects/memoryobject.c
@@ -2905,7 +2905,7 @@
 }
 
 static PyObject *
-memory_obj_get(PyMemoryViewObject *self)
+memory_obj_get(PyMemoryViewObject *self, void *Py_UNUSED(ignored))
 {
     Py_buffer *view = &self->view;
 
@@ -2918,56 +2918,56 @@
 }
 
 static PyObject *
-memory_nbytes_get(PyMemoryViewObject *self)
+memory_nbytes_get(PyMemoryViewObject *self, void *Py_UNUSED(ignored))
 {
     CHECK_RELEASED(self);
     return PyLong_FromSsize_t(self->view.len);
 }
 
 static PyObject *
-memory_format_get(PyMemoryViewObject *self)
+memory_format_get(PyMemoryViewObject *self, void *Py_UNUSED(ignored))
 {
     CHECK_RELEASED(self);
     return PyUnicode_FromString(self->view.format);
 }
 
 static PyObject *
-memory_itemsize_get(PyMemoryViewObject *self)
+memory_itemsize_get(PyMemoryViewObject *self, void *Py_UNUSED(ignored))
 {
     CHECK_RELEASED(self);
     return PyLong_FromSsize_t(self->view.itemsize);
 }
 
 static PyObject *
-memory_shape_get(PyMemoryViewObject *self)
+memory_shape_get(PyMemoryViewObject *self, void *Py_UNUSED(ignored))
 {
     CHECK_RELEASED(self);
     return _IntTupleFromSsizet(self->view.ndim, self->view.shape);
 }
 
 static PyObject *
-memory_strides_get(PyMemoryViewObject *self)
+memory_strides_get(PyMemoryViewObject *self, void *Py_UNUSED(ignored))
 {
     CHECK_RELEASED(self);
     return _IntTupleFromSsizet(self->view.ndim, self->view.strides);
 }
 
 static PyObject *
-memory_suboffsets_get(PyMemoryViewObject *self)
+memory_suboffsets_get(PyMemoryViewObject *self, void *Py_UNUSED(ignored))
 {
     CHECK_RELEASED(self);
     return _IntTupleFromSsizet(self->view.ndim, self->view.suboffsets);
 }
 
 static PyObject *
-memory_readonly_get(PyMemoryViewObject *self)
+memory_readonly_get(PyMemoryViewObject *self, void *Py_UNUSED(ignored))
 {
     CHECK_RELEASED(self);
     return PyBool_FromLong(self->view.readonly);
 }
 
 static PyObject *
-memory_ndim_get(PyMemoryViewObject *self)
+memory_ndim_get(PyMemoryViewObject *self, void *Py_UNUSED(ignored))
 {
     CHECK_RELEASED(self);
     return PyLong_FromLong(self->view.ndim);
diff --git a/Python/context.c b/Python/context.c
index ba64903..90c71e3 100644
--- a/Python/context.c
+++ b/Python/context.c
@@ -1105,14 +1105,14 @@
 }
 
 static PyObject *
-token_get_var(PyContextToken *self)
+token_get_var(PyContextToken *self, void *Py_UNUSED(ignored))
 {
     Py_INCREF(self->tok_var);
     return (PyObject *)self->tok_var;
 }
 
 static PyObject *
-token_get_old_value(PyContextToken *self)
+token_get_old_value(PyContextToken *self, void *Py_UNUSED(ignored))
 {
     if (self->tok_oldval == NULL) {
         return get_token_missing();
diff --git a/Python/traceback.c b/Python/traceback.c
index 95bef64..8b32864 100644
--- a/Python/traceback.c
+++ b/Python/traceback.c
@@ -178,11 +178,12 @@
     return 0;
 }
 
-static void
+static int
 tb_clear(PyTracebackObject *tb)
 {
     Py_CLEAR(tb->tb_next);
     Py_CLEAR(tb->tb_frame);
+    return 0;
 }
 
 PyTypeObject PyTraceBack_Type = {