https://github.com/python/cpython/commit/6f5e360acdeed9ce2836fa878095dd1a5be448ab
commit: 6f5e360acdeed9ce2836fa878095dd1a5be448ab
branch: 3.12
author: Erlend E. Aasland <[email protected]>
committer: erlend-aasland <[email protected]>
date: 2024-02-06T11:20:16+01:00
summary:

[3.12] gh-115015: Argument Clinic: fix generated code for METH_METHOD methods 
without params (#115016) (#115067)

(cherry picked from commit 09096a1647913526a3d4fa69a9d2056ec82a8f37)

files:
A Misc/NEWS.d/next/Tools-Demos/2024-02-05-02-45-51.gh-issue-115015.rgtiDB.rst
M Lib/test/clinic.test.c
M Lib/test/test_clinic.py
M Modules/_io/clinic/bufferedio.c.h
M Modules/_io/clinic/bytesio.c.h
M Modules/_io/clinic/fileio.c.h
M Modules/_io/clinic/iobase.c.h
M Modules/_io/clinic/textio.c.h
M Modules/_io/clinic/winconsoleio.c.h
M Modules/_sre/clinic/sre.c.h
M Modules/_testclinic.c
M Modules/cjkcodecs/clinic/multibytecodec.c.h
M Modules/clinic/_asynciomodule.c.h
M Modules/clinic/_curses_panel.c.h
M Modules/clinic/_dbmmodule.c.h
M Modules/clinic/_elementtree.c.h
M Modules/clinic/_gdbmmodule.c.h
M Modules/clinic/_lsprof.c.h
M Modules/clinic/_pickle.c.h
M Modules/clinic/_queuemodule.c.h
M Modules/clinic/_testclinic.c.h
M Modules/clinic/_testmultiphase.c.h
M Modules/clinic/arraymodule.c.h
M Modules/clinic/md5module.c.h
M Modules/clinic/posixmodule.c.h
M Modules/clinic/sha1module.c.h
M Modules/clinic/sha2module.c.h
M Modules/clinic/zlibmodule.c.h
M Tools/c-analyzer/cpython/globals-to-fix.tsv
M Tools/clinic/clinic.py

diff --git a/Lib/test/clinic.test.c b/Lib/test/clinic.test.c
index 04227e41a4d50c..b1471f75f912e8 100644
--- a/Lib/test/clinic.test.c
+++ b/Lib/test/clinic.test.c
@@ -4629,7 +4629,7 @@ Test_cls_no_params_impl(TestObj *self, PyTypeObject *cls);
 static PyObject *
 Test_cls_no_params(TestObj *self, PyTypeObject *cls, PyObject *const *args, 
Py_ssize_t nargs, PyObject *kwnames)
 {
-    if (nargs) {
+    if (nargs || (kwnames && PyTuple_GET_SIZE(kwnames))) {
         PyErr_SetString(PyExc_TypeError, "cls_no_params() takes no arguments");
         return NULL;
     }
@@ -4638,7 +4638,7 @@ Test_cls_no_params(TestObj *self, PyTypeObject *cls, 
PyObject *const *args, Py_s
 
 static PyObject *
 Test_cls_no_params_impl(TestObj *self, PyTypeObject *cls)
-/*[clinic end generated code: output=cc8845f22cff3dcb input=e7e2e4e344e96a11]*/
+/*[clinic end generated code: output=4d68b4652c144af3 input=e7e2e4e344e96a11]*/
 
 
 /*[clinic input]
diff --git a/Lib/test/test_clinic.py b/Lib/test/test_clinic.py
index 05eea78a0ce4e5..e81d3824e0ce28 100644
--- a/Lib/test/test_clinic.py
+++ b/Lib/test/test_clinic.py
@@ -2,6 +2,7 @@
 # Copyright 2012-2013 by Larry Hastings.
 # Licensed to the PSF under a contributor agreement.
 
+from functools import partial
 from test import support, test_tools
 from test.support import os_helper
 from test.support.os_helper import TESTFN, unlink
@@ -2096,6 +2097,26 @@ def 
test_cloned_func_with_converter_exception_message(self):
                 func = getattr(ac_tester, name)
                 self.assertEqual(func(), name)
 
+    def test_meth_method_no_params(self):
+        obj = ac_tester.TestClass()
+        meth = obj.meth_method_no_params
+        check = partial(self.assertRaisesRegex, TypeError, "no arguments")
+        check(meth, 1)
+        check(meth, a=1)
+
+    def test_meth_method_no_params_capi(self):
+        from _testcapi import pyobject_vectorcall
+        obj = ac_tester.TestClass()
+        meth = obj.meth_method_no_params
+        pyobject_vectorcall(meth, None, None)
+        pyobject_vectorcall(meth, (), None)
+        pyobject_vectorcall(meth, (), ())
+        pyobject_vectorcall(meth, None, ())
+
+        check = partial(self.assertRaisesRegex, TypeError, "no arguments")
+        check(pyobject_vectorcall, meth, (1,), None)
+        check(pyobject_vectorcall, meth, (1,), ("a",))
+
 
 class PermutationTests(unittest.TestCase):
     """Test permutation support functions."""
diff --git 
a/Misc/NEWS.d/next/Tools-Demos/2024-02-05-02-45-51.gh-issue-115015.rgtiDB.rst 
b/Misc/NEWS.d/next/Tools-Demos/2024-02-05-02-45-51.gh-issue-115015.rgtiDB.rst
new file mode 100644
index 00000000000000..d8739d28eb2b73
--- /dev/null
+++ 
b/Misc/NEWS.d/next/Tools-Demos/2024-02-05-02-45-51.gh-issue-115015.rgtiDB.rst
@@ -0,0 +1,5 @@
+Fix a bug in Argument Clinic that generated incorrect code for methods with
+no parameters that use the :ref:`METH_METHOD | METH_FASTCALL | METH_KEYWORDS
+<METH_METHOD-METH_FASTCALL-METH_KEYWORDS>` calling convention. Only the
+positional parameter count was checked; any keyword argument passed would be
+silently accepted.
diff --git a/Modules/_io/clinic/bufferedio.c.h 
b/Modules/_io/clinic/bufferedio.c.h
index 4f40fdadf8ec85..3becf4a5e3be5e 100644
--- a/Modules/_io/clinic/bufferedio.c.h
+++ b/Modules/_io/clinic/bufferedio.c.h
@@ -100,7 +100,7 @@ _io__BufferedIOBase_detach_impl(PyObject *self, 
PyTypeObject *cls);
 static PyObject *
 _io__BufferedIOBase_detach(PyObject *self, PyTypeObject *cls, PyObject *const 
*args, Py_ssize_t nargs, PyObject *kwnames)
 {
-    if (nargs) {
+    if (nargs || (kwnames && PyTuple_GET_SIZE(kwnames))) {
         PyErr_SetString(PyExc_TypeError, "detach() takes no arguments");
         return NULL;
     }
@@ -1098,4 +1098,4 @@ _io_BufferedRandom___init__(PyObject *self, PyObject 
*args, PyObject *kwargs)
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=b7ddf84a5bc2bf34 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=e51a6ca8bc8ed33d input=a9049054013a1b77]*/
diff --git a/Modules/_io/clinic/bytesio.c.h b/Modules/_io/clinic/bytesio.c.h
index 9550c8728c251e..c816ef5d6bbecf 100644
--- a/Modules/_io/clinic/bytesio.c.h
+++ b/Modules/_io/clinic/bytesio.c.h
@@ -95,7 +95,7 @@ _io_BytesIO_getbuffer_impl(bytesio *self, PyTypeObject *cls);
 static PyObject *
 _io_BytesIO_getbuffer(bytesio *self, PyTypeObject *cls, PyObject *const *args, 
Py_ssize_t nargs, PyObject *kwnames)
 {
-    if (nargs) {
+    if (nargs || (kwnames && PyTuple_GET_SIZE(kwnames))) {
         PyErr_SetString(PyExc_TypeError, "getbuffer() takes no arguments");
         return NULL;
     }
@@ -538,4 +538,4 @@ _io_BytesIO___init__(PyObject *self, PyObject *args, 
PyObject *kwargs)
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=098584d485420b65 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=1c540b54a10919d7 input=a9049054013a1b77]*/
diff --git a/Modules/_io/clinic/fileio.c.h b/Modules/_io/clinic/fileio.c.h
index 33a37a389d223d..0d94e6cec693a7 100644
--- a/Modules/_io/clinic/fileio.c.h
+++ b/Modules/_io/clinic/fileio.c.h
@@ -26,7 +26,7 @@ _io_FileIO_close_impl(fileio *self, PyTypeObject *cls);
 static PyObject *
 _io_FileIO_close(fileio *self, PyTypeObject *cls, PyObject *const *args, 
Py_ssize_t nargs, PyObject *kwnames)
 {
-    if (nargs) {
+    if (nargs || (kwnames && PyTuple_GET_SIZE(kwnames))) {
         PyErr_SetString(PyExc_TypeError, "close() takes no arguments");
         return NULL;
     }
@@ -536,4 +536,4 @@ _io_FileIO_isatty(fileio *self, PyObject 
*Py_UNUSED(ignored))
 #ifndef _IO_FILEIO_TRUNCATE_METHODDEF
     #define _IO_FILEIO_TRUNCATE_METHODDEF
 #endif /* !defined(_IO_FILEIO_TRUNCATE_METHODDEF) */
-/*[clinic end generated code: output=bef47b31b644996a input=a9049054013a1b77]*/
+/*[clinic end generated code: output=17d5c63e9b37ccb1 input=a9049054013a1b77]*/
diff --git a/Modules/_io/clinic/iobase.c.h b/Modules/_io/clinic/iobase.c.h
index e29a4f182dc03e..328ea95e3f8078 100644
--- a/Modules/_io/clinic/iobase.c.h
+++ b/Modules/_io/clinic/iobase.c.h
@@ -265,7 +265,7 @@ _io__IOBase_fileno_impl(PyObject *self, PyTypeObject *cls);
 static PyObject *
 _io__IOBase_fileno(PyObject *self, PyTypeObject *cls, PyObject *const *args, 
Py_ssize_t nargs, PyObject *kwnames)
 {
-    if (nargs) {
+    if (nargs || (kwnames && PyTuple_GET_SIZE(kwnames))) {
         PyErr_SetString(PyExc_TypeError, "fileno() takes no arguments");
         return NULL;
     }
@@ -441,4 +441,4 @@ _io__RawIOBase_readall(PyObject *self, PyObject 
*Py_UNUSED(ignored))
 {
     return _io__RawIOBase_readall_impl(self);
 }
-/*[clinic end generated code: output=7c2df7a330be8b5b input=a9049054013a1b77]*/
+/*[clinic end generated code: output=60faa842b41185d2 input=a9049054013a1b77]*/
diff --git a/Modules/_io/clinic/textio.c.h b/Modules/_io/clinic/textio.c.h
index 4a3c133068df1d..1f67434f8817b3 100644
--- a/Modules/_io/clinic/textio.c.h
+++ b/Modules/_io/clinic/textio.c.h
@@ -25,7 +25,7 @@ _io__TextIOBase_detach_impl(PyObject *self, PyTypeObject 
*cls);
 static PyObject *
 _io__TextIOBase_detach(PyObject *self, PyTypeObject *cls, PyObject *const 
*args, Py_ssize_t nargs, PyObject *kwnames)
 {
-    if (nargs) {
+    if (nargs || (kwnames && PyTuple_GET_SIZE(kwnames))) {
         PyErr_SetString(PyExc_TypeError, "detach() takes no arguments");
         return NULL;
     }
@@ -982,4 +982,4 @@ _io_TextIOWrapper_close(textio *self, PyObject 
*Py_UNUSED(ignored))
 {
     return _io_TextIOWrapper_close_impl(self);
 }
-/*[clinic end generated code: output=a3614e1c64747ff5 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=408adcf5b8c5d8a6 input=a9049054013a1b77]*/
diff --git a/Modules/_io/clinic/winconsoleio.c.h 
b/Modules/_io/clinic/winconsoleio.c.h
index cd3348dc1227cd..064ed3814d936c 100644
--- a/Modules/_io/clinic/winconsoleio.c.h
+++ b/Modules/_io/clinic/winconsoleio.c.h
@@ -28,7 +28,7 @@ _io__WindowsConsoleIO_close_impl(winconsoleio *self, 
PyTypeObject *cls);
 static PyObject *
 _io__WindowsConsoleIO_close(winconsoleio *self, PyTypeObject *cls, PyObject 
*const *args, Py_ssize_t nargs, PyObject *kwnames)
 {
-    if (nargs) {
+    if (nargs || (kwnames && PyTuple_GET_SIZE(kwnames))) {
         PyErr_SetString(PyExc_TypeError, "close() takes no arguments");
         return NULL;
     }
@@ -465,4 +465,4 @@ _io__WindowsConsoleIO_isatty(winconsoleio *self, PyObject 
*Py_UNUSED(ignored))
 #ifndef _IO__WINDOWSCONSOLEIO_ISATTY_METHODDEF
     #define _IO__WINDOWSCONSOLEIO_ISATTY_METHODDEF
 #endif /* !defined(_IO__WINDOWSCONSOLEIO_ISATTY_METHODDEF) */
-/*[clinic end generated code: output=235393758365c229 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=9a9f95a1b52c95f9 input=a9049054013a1b77]*/
diff --git a/Modules/_sre/clinic/sre.c.h b/Modules/_sre/clinic/sre.c.h
index da641081ce9e3c..529c634e76d63c 100644
--- a/Modules/_sre/clinic/sre.c.h
+++ b/Modules/_sre/clinic/sre.c.h
@@ -1433,7 +1433,7 @@ _sre_SRE_Scanner_match_impl(ScannerObject *self, 
PyTypeObject *cls);
 static PyObject *
 _sre_SRE_Scanner_match(ScannerObject *self, PyTypeObject *cls, PyObject *const 
*args, Py_ssize_t nargs, PyObject *kwnames)
 {
-    if (nargs) {
+    if (nargs || (kwnames && PyTuple_GET_SIZE(kwnames))) {
         PyErr_SetString(PyExc_TypeError, "match() takes no arguments");
         return NULL;
     }
@@ -1454,10 +1454,10 @@ _sre_SRE_Scanner_search_impl(ScannerObject *self, 
PyTypeObject *cls);
 static PyObject *
 _sre_SRE_Scanner_search(ScannerObject *self, PyTypeObject *cls, PyObject 
*const *args, Py_ssize_t nargs, PyObject *kwnames)
 {
-    if (nargs) {
+    if (nargs || (kwnames && PyTuple_GET_SIZE(kwnames))) {
         PyErr_SetString(PyExc_TypeError, "search() takes no arguments");
         return NULL;
     }
     return _sre_SRE_Scanner_search_impl(self, cls);
 }
-/*[clinic end generated code: output=e3ba72156dd71572 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=045de53cfe02dee0 input=a9049054013a1b77]*/
diff --git a/Modules/_testclinic.c b/Modules/_testclinic.c
index 6ff55a2755cf5a..676535f5463be6 100644
--- a/Modules/_testclinic.c
+++ b/Modules/_testclinic.c
@@ -1194,6 +1194,40 @@ clone_with_conv_f2_impl(PyObject *module, custom_t path)
 }
 
 
+/*[clinic input]
+class _testclinic.TestClass "PyObject *" "PyObject"
+[clinic start generated code]*/
+/*[clinic end generated code: output=da39a3ee5e6b4b0d input=668a591c65bec947]*/
+
+/*[clinic input]
+_testclinic.TestClass.meth_method_no_params
+    cls: defining_class
+    /
+[clinic start generated code]*/
+
+static PyObject *
+_testclinic_TestClass_meth_method_no_params_impl(PyObject *self,
+                                                 PyTypeObject *cls)
+/*[clinic end generated code: output=c140f100080c2fc8 input=6bd34503d11c63c1]*/
+{
+    Py_RETURN_NONE;
+}
+
+static struct PyMethodDef test_class_methods[] = {
+    _TESTCLINIC_TESTCLASS_METH_METHOD_NO_PARAMS_METHODDEF
+    {NULL, NULL}
+};
+
+static PyTypeObject TestClass = {
+    PyVarObject_HEAD_INIT(NULL, 0)
+    .tp_name = "_testclinic.TestClass",
+    .tp_basicsize = sizeof(PyObject),
+    .tp_flags = Py_TPFLAGS_DEFAULT,
+    .tp_new = PyType_GenericNew,
+    .tp_methods = test_class_methods,
+};
+
+
 static PyMethodDef tester_methods[] = {
     TEST_EMPTY_FUNCTION_METHODDEF
     OBJECTS_CONVERTER_METHODDEF
@@ -1262,7 +1296,18 @@ static struct PyModuleDef _testclinic_module = {
 PyMODINIT_FUNC
 PyInit__testclinic(void)
 {
-    return PyModule_Create(&_testclinic_module);
+    PyObject *m = PyModule_Create(&_testclinic_module);
+    if (m == NULL) {
+        return NULL;
+    }
+    if (PyModule_AddType(m, &TestClass) < 0) {
+        goto error;
+    }
+    return m;
+
+error:
+    Py_DECREF(m);
+    return NULL;
 }
 
 #undef RETURN_PACKED_ARGS
diff --git a/Modules/cjkcodecs/clinic/multibytecodec.c.h 
b/Modules/cjkcodecs/clinic/multibytecodec.c.h
index 1b41c231eac5d8..3f200405f4d7bb 100644
--- a/Modules/cjkcodecs/clinic/multibytecodec.c.h
+++ b/Modules/cjkcodecs/clinic/multibytecodec.c.h
@@ -676,7 +676,7 @@ 
_multibytecodec_MultibyteStreamWriter_reset_impl(MultibyteStreamWriterObject *se
 static PyObject *
 _multibytecodec_MultibyteStreamWriter_reset(MultibyteStreamWriterObject *self, 
PyTypeObject *cls, PyObject *const *args, Py_ssize_t nargs, PyObject *kwnames)
 {
-    if (nargs) {
+    if (nargs || (kwnames && PyTuple_GET_SIZE(kwnames))) {
         PyErr_SetString(PyExc_TypeError, "reset() takes no arguments");
         return NULL;
     }
@@ -690,4 +690,4 @@ PyDoc_STRVAR(_multibytecodec___create_codec__doc__,
 
 #define _MULTIBYTECODEC___CREATE_CODEC_METHODDEF    \
     {"__create_codec", (PyCFunction)_multibytecodec___create_codec, METH_O, 
_multibytecodec___create_codec__doc__},
-/*[clinic end generated code: output=5f0e8dacddb0ac76 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=57bae129ab6c7a67 input=a9049054013a1b77]*/
diff --git a/Modules/clinic/_asynciomodule.c.h 
b/Modules/clinic/_asynciomodule.c.h
index 6a780a80cd0bc4..860d55cb3bba3e 100644
--- a/Modules/clinic/_asynciomodule.c.h
+++ b/Modules/clinic/_asynciomodule.c.h
@@ -120,7 +120,7 @@ _asyncio_Future_exception_impl(FutureObj *self, 
PyTypeObject *cls);
 static PyObject *
 _asyncio_Future_exception(FutureObj *self, PyTypeObject *cls, PyObject *const 
*args, Py_ssize_t nargs, PyObject *kwnames)
 {
-    if (nargs) {
+    if (nargs || (kwnames && PyTuple_GET_SIZE(kwnames))) {
         PyErr_SetString(PyExc_TypeError, "exception() takes no arguments");
         return NULL;
     }
@@ -453,7 +453,7 @@ _asyncio_Future_get_loop_impl(FutureObj *self, PyTypeObject 
*cls);
 static PyObject *
 _asyncio_Future_get_loop(FutureObj *self, PyTypeObject *cls, PyObject *const 
*args, Py_ssize_t nargs, PyObject *kwnames)
 {
-    if (nargs) {
+    if (nargs || (kwnames && PyTuple_GET_SIZE(kwnames))) {
         PyErr_SetString(PyExc_TypeError, "get_loop() takes no arguments");
         return NULL;
     }
@@ -1487,4 +1487,4 @@ _asyncio_current_task(PyObject *module, PyObject *const 
*args, Py_ssize_t nargs,
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=6b0e283177b07639 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=127ba6153250d769 input=a9049054013a1b77]*/
diff --git a/Modules/clinic/_curses_panel.c.h b/Modules/clinic/_curses_panel.c.h
index bb6cc90f0438c0..b45f28d40cd839 100644
--- a/Modules/clinic/_curses_panel.c.h
+++ b/Modules/clinic/_curses_panel.c.h
@@ -23,7 +23,7 @@ _curses_panel_panel_bottom_impl(PyCursesPanelObject *self, 
PyTypeObject *cls);
 static PyObject *
 _curses_panel_panel_bottom(PyCursesPanelObject *self, PyTypeObject *cls, 
PyObject *const *args, Py_ssize_t nargs, PyObject *kwnames)
 {
-    if (nargs) {
+    if (nargs || (kwnames && PyTuple_GET_SIZE(kwnames))) {
         PyErr_SetString(PyExc_TypeError, "bottom() takes no arguments");
         return NULL;
     }
@@ -47,7 +47,7 @@ _curses_panel_panel_hide_impl(PyCursesPanelObject *self, 
PyTypeObject *cls);
 static PyObject *
 _curses_panel_panel_hide(PyCursesPanelObject *self, PyTypeObject *cls, 
PyObject *const *args, Py_ssize_t nargs, PyObject *kwnames)
 {
-    if (nargs) {
+    if (nargs || (kwnames && PyTuple_GET_SIZE(kwnames))) {
         PyErr_SetString(PyExc_TypeError, "hide() takes no arguments");
         return NULL;
     }
@@ -69,7 +69,7 @@ _curses_panel_panel_show_impl(PyCursesPanelObject *self, 
PyTypeObject *cls);
 static PyObject *
 _curses_panel_panel_show(PyCursesPanelObject *self, PyTypeObject *cls, 
PyObject *const *args, Py_ssize_t nargs, PyObject *kwnames)
 {
-    if (nargs) {
+    if (nargs || (kwnames && PyTuple_GET_SIZE(kwnames))) {
         PyErr_SetString(PyExc_TypeError, "show() takes no arguments");
         return NULL;
     }
@@ -91,7 +91,7 @@ _curses_panel_panel_top_impl(PyCursesPanelObject *self, 
PyTypeObject *cls);
 static PyObject *
 _curses_panel_panel_top(PyCursesPanelObject *self, PyTypeObject *cls, PyObject 
*const *args, Py_ssize_t nargs, PyObject *kwnames)
 {
-    if (nargs) {
+    if (nargs || (kwnames && PyTuple_GET_SIZE(kwnames))) {
         PyErr_SetString(PyExc_TypeError, "top() takes no arguments");
         return NULL;
     }
@@ -331,7 +331,7 @@ _curses_panel_panel_userptr_impl(PyCursesPanelObject *self,
 static PyObject *
 _curses_panel_panel_userptr(PyCursesPanelObject *self, PyTypeObject *cls, 
PyObject *const *args, Py_ssize_t nargs, PyObject *kwnames)
 {
-    if (nargs) {
+    if (nargs || (kwnames && PyTuple_GET_SIZE(kwnames))) {
         PyErr_SetString(PyExc_TypeError, "userptr() takes no arguments");
         return NULL;
     }
@@ -422,4 +422,4 @@ _curses_panel_update_panels(PyObject *module, PyObject 
*Py_UNUSED(ignored))
 {
     return _curses_panel_update_panels_impl(module);
 }
-/*[clinic end generated code: output=8d0533681891523c input=a9049054013a1b77]*/
+/*[clinic end generated code: output=550ee3ad1ce9ec07 input=a9049054013a1b77]*/
diff --git a/Modules/clinic/_dbmmodule.c.h b/Modules/clinic/_dbmmodule.c.h
index 172dc4b9d5793e..a880e3cebfb11d 100644
--- a/Modules/clinic/_dbmmodule.c.h
+++ b/Modules/clinic/_dbmmodule.c.h
@@ -41,7 +41,7 @@ _dbm_dbm_keys_impl(dbmobject *self, PyTypeObject *cls);
 static PyObject *
 _dbm_dbm_keys(dbmobject *self, PyTypeObject *cls, PyObject *const *args, 
Py_ssize_t nargs, PyObject *kwnames)
 {
-    if (nargs) {
+    if (nargs || (kwnames && PyTuple_GET_SIZE(kwnames))) {
         PyErr_SetString(PyExc_TypeError, "keys() takes no arguments");
         return NULL;
     }
@@ -200,4 +200,4 @@ dbmopen(PyObject *module, PyObject *const *args, Py_ssize_t 
nargs)
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=28dcf736654137c2 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=f924d467af2e2f4e input=a9049054013a1b77]*/
diff --git a/Modules/clinic/_elementtree.c.h b/Modules/clinic/_elementtree.c.h
index a0bc751ca21ee8..0b3a86159ccb94 100644
--- a/Modules/clinic/_elementtree.c.h
+++ b/Modules/clinic/_elementtree.c.h
@@ -86,7 +86,7 @@ _elementtree_Element___copy___impl(ElementObject *self, 
PyTypeObject *cls);
 static PyObject *
 _elementtree_Element___copy__(ElementObject *self, PyTypeObject *cls, PyObject 
*const *args, Py_ssize_t nargs, PyObject *kwnames)
 {
-    if (nargs) {
+    if (nargs || (kwnames && PyTuple_GET_SIZE(kwnames))) {
         PyErr_SetString(PyExc_TypeError, "__copy__() takes no arguments");
         return NULL;
     }
@@ -643,7 +643,7 @@ _elementtree_Element_itertext_impl(ElementObject *self, 
PyTypeObject *cls);
 static PyObject *
 _elementtree_Element_itertext(ElementObject *self, PyTypeObject *cls, PyObject 
*const *args, Py_ssize_t nargs, PyObject *kwnames)
 {
-    if (nargs) {
+    if (nargs || (kwnames && PyTuple_GET_SIZE(kwnames))) {
         PyErr_SetString(PyExc_TypeError, "itertext() takes no arguments");
         return NULL;
     }
@@ -1218,4 +1218,4 @@ _elementtree_XMLParser__setevents(XMLParserObject *self, 
PyObject *const *args,
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=40767b1a98e54b60 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=31c4780c4df68441 input=a9049054013a1b77]*/
diff --git a/Modules/clinic/_gdbmmodule.c.h b/Modules/clinic/_gdbmmodule.c.h
index 5c6aeeee7789f7..e5d6b075dbc145 100644
--- a/Modules/clinic/_gdbmmodule.c.h
+++ b/Modules/clinic/_gdbmmodule.c.h
@@ -110,7 +110,7 @@ _gdbm_gdbm_keys_impl(gdbmobject *self, PyTypeObject *cls);
 static PyObject *
 _gdbm_gdbm_keys(gdbmobject *self, PyTypeObject *cls, PyObject *const *args, 
Py_ssize_t nargs, PyObject *kwnames)
 {
-    if (nargs) {
+    if (nargs || (kwnames && PyTuple_GET_SIZE(kwnames))) {
         PyErr_SetString(PyExc_TypeError, "keys() takes no arguments");
         return NULL;
     }
@@ -136,7 +136,7 @@ _gdbm_gdbm_firstkey_impl(gdbmobject *self, PyTypeObject 
*cls);
 static PyObject *
 _gdbm_gdbm_firstkey(gdbmobject *self, PyTypeObject *cls, PyObject *const 
*args, Py_ssize_t nargs, PyObject *kwnames)
 {
-    if (nargs) {
+    if (nargs || (kwnames && PyTuple_GET_SIZE(kwnames))) {
         PyErr_SetString(PyExc_TypeError, "firstkey() takes no arguments");
         return NULL;
     }
@@ -215,7 +215,7 @@ _gdbm_gdbm_reorganize_impl(gdbmobject *self, PyTypeObject 
*cls);
 static PyObject *
 _gdbm_gdbm_reorganize(gdbmobject *self, PyTypeObject *cls, PyObject *const 
*args, Py_ssize_t nargs, PyObject *kwnames)
 {
-    if (nargs) {
+    if (nargs || (kwnames && PyTuple_GET_SIZE(kwnames))) {
         PyErr_SetString(PyExc_TypeError, "reorganize() takes no arguments");
         return NULL;
     }
@@ -240,7 +240,7 @@ _gdbm_gdbm_sync_impl(gdbmobject *self, PyTypeObject *cls);
 static PyObject *
 _gdbm_gdbm_sync(gdbmobject *self, PyTypeObject *cls, PyObject *const *args, 
Py_ssize_t nargs, PyObject *kwnames)
 {
-    if (nargs) {
+    if (nargs || (kwnames && PyTuple_GET_SIZE(kwnames))) {
         PyErr_SetString(PyExc_TypeError, "sync() takes no arguments");
         return NULL;
     }
@@ -322,4 +322,4 @@ dbmopen(PyObject *module, PyObject *const *args, Py_ssize_t 
nargs)
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=c6e721d82335adb3 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=37665074bba905bf input=a9049054013a1b77]*/
diff --git a/Modules/clinic/_lsprof.c.h b/Modules/clinic/_lsprof.c.h
index 5fcc7ae02e3b00..14af6b48c677da 100644
--- a/Modules/clinic/_lsprof.c.h
+++ b/Modules/clinic/_lsprof.c.h
@@ -45,10 +45,10 @@ _lsprof_Profiler_getstats_impl(ProfilerObject *self, 
PyTypeObject *cls);
 static PyObject *
 _lsprof_Profiler_getstats(ProfilerObject *self, PyTypeObject *cls, PyObject 
*const *args, Py_ssize_t nargs, PyObject *kwnames)
 {
-    if (nargs) {
+    if (nargs || (kwnames && PyTuple_GET_SIZE(kwnames))) {
         PyErr_SetString(PyExc_TypeError, "getstats() takes no arguments");
         return NULL;
     }
     return _lsprof_Profiler_getstats_impl(self, cls);
 }
-/*[clinic end generated code: output=7425d3481349629a input=a9049054013a1b77]*/
+/*[clinic end generated code: output=cc3b236bc414a372 input=a9049054013a1b77]*/
diff --git a/Modules/clinic/_pickle.c.h b/Modules/clinic/_pickle.c.h
index 539acc34a05cc1..b39c04dcaaccf5 100644
--- a/Modules/clinic/_pickle.c.h
+++ b/Modules/clinic/_pickle.c.h
@@ -285,7 +285,7 @@ _pickle_Unpickler_load_impl(UnpicklerObject *self, 
PyTypeObject *cls);
 static PyObject *
 _pickle_Unpickler_load(UnpicklerObject *self, PyTypeObject *cls, PyObject 
*const *args, Py_ssize_t nargs, PyObject *kwnames)
 {
-    if (nargs) {
+    if (nargs || (kwnames && PyTuple_GET_SIZE(kwnames))) {
         PyErr_SetString(PyExc_TypeError, "load() takes no arguments");
         return NULL;
     }
@@ -1034,4 +1034,4 @@ _pickle_loads(PyObject *module, PyObject *const *args, 
Py_ssize_t nargs, PyObjec
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=a0e04b85e7bae626 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=5886b563df7b866d input=a9049054013a1b77]*/
diff --git a/Modules/clinic/_queuemodule.c.h b/Modules/clinic/_queuemodule.c.h
index 94fb59a5b17a49..906d0582a9903b 100644
--- a/Modules/clinic/_queuemodule.c.h
+++ b/Modules/clinic/_queuemodule.c.h
@@ -269,7 +269,7 @@ _queue_SimpleQueue_get_nowait_impl(simplequeueobject *self,
 static PyObject *
 _queue_SimpleQueue_get_nowait(simplequeueobject *self, PyTypeObject *cls, 
PyObject *const *args, Py_ssize_t nargs, PyObject *kwnames)
 {
-    if (nargs) {
+    if (nargs || (kwnames && PyTuple_GET_SIZE(kwnames))) {
         PyErr_SetString(PyExc_TypeError, "get_nowait() takes no arguments");
         return NULL;
     }
@@ -331,4 +331,4 @@ _queue_SimpleQueue_qsize(simplequeueobject *self, PyObject 
*Py_UNUSED(ignored))
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=9a72a8d1b5767f6a input=a9049054013a1b77]*/
+/*[clinic end generated code: output=78816f171ecc4422 input=a9049054013a1b77]*/
diff --git a/Modules/clinic/_testclinic.c.h b/Modules/clinic/_testclinic.c.h
index cc69f5c3d2fe9f..3fce262459146b 100644
--- a/Modules/clinic/_testclinic.c.h
+++ b/Modules/clinic/_testclinic.c.h
@@ -3075,4 +3075,26 @@ clone_with_conv_f2(PyObject *module, PyObject *const 
*args, Py_ssize_t nargs, Py
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=f58202a6e5df2d16 input=a9049054013a1b77]*/
+
+PyDoc_STRVAR(_testclinic_TestClass_meth_method_no_params__doc__,
+"meth_method_no_params($self, /)\n"
+"--\n"
+"\n");
+
+#define _TESTCLINIC_TESTCLASS_METH_METHOD_NO_PARAMS_METHODDEF    \
+    {"meth_method_no_params", 
_PyCFunction_CAST(_testclinic_TestClass_meth_method_no_params), 
METH_METHOD|METH_FASTCALL|METH_KEYWORDS, 
_testclinic_TestClass_meth_method_no_params__doc__},
+
+static PyObject *
+_testclinic_TestClass_meth_method_no_params_impl(PyObject *self,
+                                                 PyTypeObject *cls);
+
+static PyObject *
+_testclinic_TestClass_meth_method_no_params(PyObject *self, PyTypeObject *cls, 
PyObject *const *args, Py_ssize_t nargs, PyObject *kwnames)
+{
+    if (nargs || (kwnames && PyTuple_GET_SIZE(kwnames))) {
+        PyErr_SetString(PyExc_TypeError, "meth_method_no_params() takes no 
arguments");
+        return NULL;
+    }
+    return _testclinic_TestClass_meth_method_no_params_impl(self, cls);
+}
+/*[clinic end generated code: output=999de26ba394ab5d input=a9049054013a1b77]*/
diff --git a/Modules/clinic/_testmultiphase.c.h 
b/Modules/clinic/_testmultiphase.c.h
index 42ec7475e5e4be..4f2b1bcf98b97f 100644
--- a/Modules/clinic/_testmultiphase.c.h
+++ b/Modules/clinic/_testmultiphase.c.h
@@ -27,7 +27,7 @@ 
_testmultiphase_StateAccessType_get_defining_module_impl(StateAccessTypeObject *
 static PyObject *
 _testmultiphase_StateAccessType_get_defining_module(StateAccessTypeObject 
*self, PyTypeObject *cls, PyObject *const *args, Py_ssize_t nargs, PyObject 
*kwnames)
 {
-    if (nargs) {
+    if (nargs || (kwnames && PyTuple_GET_SIZE(kwnames))) {
         PyErr_SetString(PyExc_TypeError, "get_defining_module() takes no 
arguments");
         return NULL;
     }
@@ -50,7 +50,7 @@ 
_testmultiphase_StateAccessType_getmodulebydef_bad_def_impl(StateAccessTypeObjec
 static PyObject *
 _testmultiphase_StateAccessType_getmodulebydef_bad_def(StateAccessTypeObject 
*self, PyTypeObject *cls, PyObject *const *args, Py_ssize_t nargs, PyObject 
*kwnames)
 {
-    if (nargs) {
+    if (nargs || (kwnames && PyTuple_GET_SIZE(kwnames))) {
         PyErr_SetString(PyExc_TypeError, "getmodulebydef_bad_def() takes no 
arguments");
         return NULL;
     }
@@ -156,10 +156,10 @@ 
_testmultiphase_StateAccessType_get_count_impl(StateAccessTypeObject *self,
 static PyObject *
 _testmultiphase_StateAccessType_get_count(StateAccessTypeObject *self, 
PyTypeObject *cls, PyObject *const *args, Py_ssize_t nargs, PyObject *kwnames)
 {
-    if (nargs) {
+    if (nargs || (kwnames && PyTuple_GET_SIZE(kwnames))) {
         PyErr_SetString(PyExc_TypeError, "get_count() takes no arguments");
         return NULL;
     }
     return _testmultiphase_StateAccessType_get_count_impl(self, cls);
 }
-/*[clinic end generated code: output=52ea97ab2f03bb6d input=a9049054013a1b77]*/
+/*[clinic end generated code: output=2193fe33d5e2b739 input=a9049054013a1b77]*/
diff --git a/Modules/clinic/arraymodule.c.h b/Modules/clinic/arraymodule.c.h
index e68c3920072dbb..844865f44a5b14 100644
--- a/Modules/clinic/arraymodule.c.h
+++ b/Modules/clinic/arraymodule.c.h
@@ -665,7 +665,7 @@ array_arrayiterator___reduce___impl(arrayiterobject *self, 
PyTypeObject *cls);
 static PyObject *
 array_arrayiterator___reduce__(arrayiterobject *self, PyTypeObject *cls, 
PyObject *const *args, Py_ssize_t nargs, PyObject *kwnames)
 {
-    if (nargs) {
+    if (nargs || (kwnames && PyTuple_GET_SIZE(kwnames))) {
         PyErr_SetString(PyExc_TypeError, "__reduce__() takes no arguments");
         return NULL;
     }
@@ -680,4 +680,4 @@ PyDoc_STRVAR(array_arrayiterator___setstate____doc__,
 
 #define ARRAY_ARRAYITERATOR___SETSTATE___METHODDEF    \
     {"__setstate__", (PyCFunction)array_arrayiterator___setstate__, METH_O, 
array_arrayiterator___setstate____doc__},
-/*[clinic end generated code: output=69bc1451f7bda234 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=7478fe6a5e4096f5 input=a9049054013a1b77]*/
diff --git a/Modules/clinic/md5module.c.h b/Modules/clinic/md5module.c.h
index b4602104f18042..eb2ed49e9efdd1 100644
--- a/Modules/clinic/md5module.c.h
+++ b/Modules/clinic/md5module.c.h
@@ -23,7 +23,7 @@ MD5Type_copy_impl(MD5object *self, PyTypeObject *cls);
 static PyObject *
 MD5Type_copy(MD5object *self, PyTypeObject *cls, PyObject *const *args, 
Py_ssize_t nargs, PyObject *kwnames)
 {
-    if (nargs) {
+    if (nargs || (kwnames && PyTuple_GET_SIZE(kwnames))) {
         PyErr_SetString(PyExc_TypeError, "copy() takes no arguments");
         return NULL;
     }
@@ -148,4 +148,4 @@ _md5_md5(PyObject *module, PyObject *const *args, 
Py_ssize_t nargs, PyObject *kw
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=b4924c9905cc9f34 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=d0082f6ba5dda0c6 input=a9049054013a1b77]*/
diff --git a/Modules/clinic/posixmodule.c.h b/Modules/clinic/posixmodule.c.h
index 3e6d429eb9e06f..3802182143c76e 100644
--- a/Modules/clinic/posixmodule.c.h
+++ b/Modules/clinic/posixmodule.c.h
@@ -10681,7 +10681,7 @@ os_DirEntry_is_symlink(DirEntry *self, PyTypeObject 
*defining_class, PyObject *c
     PyObject *return_value = NULL;
     int _return_value;
 
-    if (nargs) {
+    if (nargs || (kwnames && PyTuple_GET_SIZE(kwnames))) {
         PyErr_SetString(PyExc_TypeError, "is_symlink() takes no arguments");
         goto exit;
     }
@@ -10713,7 +10713,7 @@ os_DirEntry_is_junction(DirEntry *self, PyTypeObject 
*defining_class, PyObject *
     PyObject *return_value = NULL;
     int _return_value;
 
-    if (nargs) {
+    if (nargs || (kwnames && PyTuple_GET_SIZE(kwnames))) {
         PyErr_SetString(PyExc_TypeError, "is_junction() takes no arguments");
         goto exit;
     }
@@ -11999,4 +11999,4 @@ os_waitstatus_to_exitcode(PyObject *module, PyObject 
*const *args, Py_ssize_t na
 #ifndef OS_WAITSTATUS_TO_EXITCODE_METHODDEF
     #define OS_WAITSTATUS_TO_EXITCODE_METHODDEF
 #endif /* !defined(OS_WAITSTATUS_TO_EXITCODE_METHODDEF) */
-/*[clinic end generated code: output=fa29739d72cfc07e input=a9049054013a1b77]*/
+/*[clinic end generated code: output=56e83d6b7cac0d58 input=a9049054013a1b77]*/
diff --git a/Modules/clinic/sha1module.c.h b/Modules/clinic/sha1module.c.h
index ad15ddaadfc86c..e0858e77b5ee7b 100644
--- a/Modules/clinic/sha1module.c.h
+++ b/Modules/clinic/sha1module.c.h
@@ -23,7 +23,7 @@ SHA1Type_copy_impl(SHA1object *self, PyTypeObject *cls);
 static PyObject *
 SHA1Type_copy(SHA1object *self, PyTypeObject *cls, PyObject *const *args, 
Py_ssize_t nargs, PyObject *kwnames)
 {
-    if (nargs) {
+    if (nargs || (kwnames && PyTuple_GET_SIZE(kwnames))) {
         PyErr_SetString(PyExc_TypeError, "copy() takes no arguments");
         return NULL;
     }
@@ -148,4 +148,4 @@ _sha1_sha1(PyObject *module, PyObject *const *args, 
Py_ssize_t nargs, PyObject *
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=4d1293ca3472acdb input=a9049054013a1b77]*/
+/*[clinic end generated code: output=ffe267896009b5ed input=a9049054013a1b77]*/
diff --git a/Modules/clinic/sha2module.c.h b/Modules/clinic/sha2module.c.h
index 8f855ca345e47a..557a61791bd713 100644
--- a/Modules/clinic/sha2module.c.h
+++ b/Modules/clinic/sha2module.c.h
@@ -23,7 +23,7 @@ SHA256Type_copy_impl(SHA256object *self, PyTypeObject *cls);
 static PyObject *
 SHA256Type_copy(SHA256object *self, PyTypeObject *cls, PyObject *const *args, 
Py_ssize_t nargs, PyObject *kwnames)
 {
-    if (nargs) {
+    if (nargs || (kwnames && PyTuple_GET_SIZE(kwnames))) {
         PyErr_SetString(PyExc_TypeError, "copy() takes no arguments");
         return NULL;
     }
@@ -45,7 +45,7 @@ SHA512Type_copy_impl(SHA512object *self, PyTypeObject *cls);
 static PyObject *
 SHA512Type_copy(SHA512object *self, PyTypeObject *cls, PyObject *const *args, 
Py_ssize_t nargs, PyObject *kwnames)
 {
-    if (nargs) {
+    if (nargs || (kwnames && PyTuple_GET_SIZE(kwnames))) {
         PyErr_SetString(PyExc_TypeError, "copy() takes no arguments");
         return NULL;
     }
@@ -437,4 +437,4 @@ _sha2_sha384(PyObject *module, PyObject *const *args, 
Py_ssize_t nargs, PyObject
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=f81dacb48f3fee72 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=d83a27cd9522cf22 input=a9049054013a1b77]*/
diff --git a/Modules/clinic/zlibmodule.c.h b/Modules/clinic/zlibmodule.c.h
index 65412b2435ade1..a8d488ec67cd7d 100644
--- a/Modules/clinic/zlibmodule.c.h
+++ b/Modules/clinic/zlibmodule.c.h
@@ -656,7 +656,7 @@ zlib_Compress_copy_impl(compobject *self, PyTypeObject 
*cls);
 static PyObject *
 zlib_Compress_copy(compobject *self, PyTypeObject *cls, PyObject *const *args, 
Py_ssize_t nargs, PyObject *kwnames)
 {
-    if (nargs) {
+    if (nargs || (kwnames && PyTuple_GET_SIZE(kwnames))) {
         PyErr_SetString(PyExc_TypeError, "copy() takes no arguments");
         return NULL;
     }
@@ -681,7 +681,7 @@ zlib_Compress___copy___impl(compobject *self, PyTypeObject 
*cls);
 static PyObject *
 zlib_Compress___copy__(compobject *self, PyTypeObject *cls, PyObject *const 
*args, Py_ssize_t nargs, PyObject *kwnames)
 {
-    if (nargs) {
+    if (nargs || (kwnames && PyTuple_GET_SIZE(kwnames))) {
         PyErr_SetString(PyExc_TypeError, "__copy__() takes no arguments");
         return NULL;
     }
@@ -754,7 +754,7 @@ zlib_Decompress_copy_impl(compobject *self, PyTypeObject 
*cls);
 static PyObject *
 zlib_Decompress_copy(compobject *self, PyTypeObject *cls, PyObject *const 
*args, Py_ssize_t nargs, PyObject *kwnames)
 {
-    if (nargs) {
+    if (nargs || (kwnames && PyTuple_GET_SIZE(kwnames))) {
         PyErr_SetString(PyExc_TypeError, "copy() takes no arguments");
         return NULL;
     }
@@ -779,7 +779,7 @@ zlib_Decompress___copy___impl(compobject *self, 
PyTypeObject *cls);
 static PyObject *
 zlib_Decompress___copy__(compobject *self, PyTypeObject *cls, PyObject *const 
*args, Py_ssize_t nargs, PyObject *kwnames)
 {
-    if (nargs) {
+    if (nargs || (kwnames && PyTuple_GET_SIZE(kwnames))) {
         PyErr_SetString(PyExc_TypeError, "__copy__() takes no arguments");
         return NULL;
     }
@@ -1129,4 +1129,4 @@ zlib_crc32(PyObject *module, PyObject *const *args, 
Py_ssize_t nargs)
 #ifndef ZLIB_DECOMPRESS___DEEPCOPY___METHODDEF
     #define ZLIB_DECOMPRESS___DEEPCOPY___METHODDEF
 #endif /* !defined(ZLIB_DECOMPRESS___DEEPCOPY___METHODDEF) */
-/*[clinic end generated code: output=57ff7b511ab23132 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=244bf5f33deee674 input=a9049054013a1b77]*/
diff --git a/Tools/c-analyzer/cpython/globals-to-fix.tsv 
b/Tools/c-analyzer/cpython/globals-to-fix.tsv
index 622c98d16283a8..8bfafd6e726063 100644
--- a/Tools/c-analyzer/cpython/globals-to-fix.tsv
+++ b/Tools/c-analyzer/cpython/globals-to-fix.tsv
@@ -322,6 +322,7 @@ Modules/_testcapi/vectorcall.c      -       
MethodDescriptorBase_Type       -
 Modules/_testcapi/vectorcall.c -       MethodDescriptorDerived_Type    -
 Modules/_testcapi/vectorcall.c -       MethodDescriptorNopGet_Type     -
 Modules/_testcapi/vectorcall.c -       MethodDescriptor2_Type  -
+Modules/_testclinic.c  -       TestClass       -
 
 
 ##################################
diff --git a/Tools/clinic/clinic.py b/Tools/clinic/clinic.py
index 921b77bad51330..d2ff422911ce15 100755
--- a/Tools/clinic/clinic.py
+++ b/Tools/clinic/clinic.py
@@ -904,7 +904,7 @@ def parser_body(prototype, *fields, declarations=''):
                 return_error = ('return NULL;' if default_return_converter
                                 else 'goto exit;')
                 parser_code = [normalize_snippet("""
-                    if (nargs) {{
+                    if (nargs || (kwnames && PyTuple_GET_SIZE(kwnames))) {{
                         PyErr_SetString(PyExc_TypeError, "{name}() takes no 
arguments");
                         %s
                     }}

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