Issue #27810: Regenerate Argument Clinic.
diff --git a/Modules/cjkcodecs/clinic/multibytecodec.c.h b/Modules/cjkcodecs/clinic/multibytecodec.c.h
index c9c58cd..84ffd12 100644
--- a/Modules/cjkcodecs/clinic/multibytecodec.c.h
+++ b/Modules/cjkcodecs/clinic/multibytecodec.c.h
@@ -14,7 +14,7 @@
 "registered with codecs.register_error that can handle UnicodeEncodeErrors.");
 
 #define _MULTIBYTECODEC_MULTIBYTECODEC_ENCODE_METHODDEF    \
-    {"encode", (PyCFunction)_multibytecodec_MultibyteCodec_encode, METH_VARARGS|METH_KEYWORDS, _multibytecodec_MultibyteCodec_encode__doc__},
+    {"encode", (PyCFunction)_multibytecodec_MultibyteCodec_encode, METH_FASTCALL, _multibytecodec_MultibyteCodec_encode__doc__},
 
 static PyObject *
 _multibytecodec_MultibyteCodec_encode_impl(MultibyteCodecObject *self,
@@ -22,7 +22,7 @@
                                            const char *errors);
 
 static PyObject *
-_multibytecodec_MultibyteCodec_encode(MultibyteCodecObject *self, PyObject *args, PyObject *kwargs)
+_multibytecodec_MultibyteCodec_encode(MultibyteCodecObject *self, PyObject **args, Py_ssize_t nargs, PyObject *kwnames)
 {
     PyObject *return_value = NULL;
     static const char * const _keywords[] = {"input", "errors", NULL};
@@ -30,7 +30,7 @@
     PyObject *input;
     const char *errors = NULL;
 
-    if (!_PyArg_ParseTupleAndKeywordsFast(args, kwargs, &_parser,
+    if (!_PyArg_ParseStack(args, nargs, kwnames, &_parser,
         &input, &errors)) {
         goto exit;
     }
@@ -52,7 +52,7 @@
 "codecs.register_error that is able to handle UnicodeDecodeErrors.\"");
 
 #define _MULTIBYTECODEC_MULTIBYTECODEC_DECODE_METHODDEF    \
-    {"decode", (PyCFunction)_multibytecodec_MultibyteCodec_decode, METH_VARARGS|METH_KEYWORDS, _multibytecodec_MultibyteCodec_decode__doc__},
+    {"decode", (PyCFunction)_multibytecodec_MultibyteCodec_decode, METH_FASTCALL, _multibytecodec_MultibyteCodec_decode__doc__},
 
 static PyObject *
 _multibytecodec_MultibyteCodec_decode_impl(MultibyteCodecObject *self,
@@ -60,7 +60,7 @@
                                            const char *errors);
 
 static PyObject *
-_multibytecodec_MultibyteCodec_decode(MultibyteCodecObject *self, PyObject *args, PyObject *kwargs)
+_multibytecodec_MultibyteCodec_decode(MultibyteCodecObject *self, PyObject **args, Py_ssize_t nargs, PyObject *kwnames)
 {
     PyObject *return_value = NULL;
     static const char * const _keywords[] = {"input", "errors", NULL};
@@ -68,7 +68,7 @@
     Py_buffer input = {NULL, NULL};
     const char *errors = NULL;
 
-    if (!_PyArg_ParseTupleAndKeywordsFast(args, kwargs, &_parser,
+    if (!_PyArg_ParseStack(args, nargs, kwnames, &_parser,
         &input, &errors)) {
         goto exit;
     }
@@ -89,7 +89,7 @@
 "\n");
 
 #define _MULTIBYTECODEC_MULTIBYTEINCREMENTALENCODER_ENCODE_METHODDEF    \
-    {"encode", (PyCFunction)_multibytecodec_MultibyteIncrementalEncoder_encode, METH_VARARGS|METH_KEYWORDS, _multibytecodec_MultibyteIncrementalEncoder_encode__doc__},
+    {"encode", (PyCFunction)_multibytecodec_MultibyteIncrementalEncoder_encode, METH_FASTCALL, _multibytecodec_MultibyteIncrementalEncoder_encode__doc__},
 
 static PyObject *
 _multibytecodec_MultibyteIncrementalEncoder_encode_impl(MultibyteIncrementalEncoderObject *self,
@@ -97,7 +97,7 @@
                                                         int final);
 
 static PyObject *
-_multibytecodec_MultibyteIncrementalEncoder_encode(MultibyteIncrementalEncoderObject *self, PyObject *args, PyObject *kwargs)
+_multibytecodec_MultibyteIncrementalEncoder_encode(MultibyteIncrementalEncoderObject *self, PyObject **args, Py_ssize_t nargs, PyObject *kwnames)
 {
     PyObject *return_value = NULL;
     static const char * const _keywords[] = {"input", "final", NULL};
@@ -105,7 +105,7 @@
     PyObject *input;
     int final = 0;
 
-    if (!_PyArg_ParseTupleAndKeywordsFast(args, kwargs, &_parser,
+    if (!_PyArg_ParseStack(args, nargs, kwnames, &_parser,
         &input, &final)) {
         goto exit;
     }
@@ -138,7 +138,7 @@
 "\n");
 
 #define _MULTIBYTECODEC_MULTIBYTEINCREMENTALDECODER_DECODE_METHODDEF    \
-    {"decode", (PyCFunction)_multibytecodec_MultibyteIncrementalDecoder_decode, METH_VARARGS|METH_KEYWORDS, _multibytecodec_MultibyteIncrementalDecoder_decode__doc__},
+    {"decode", (PyCFunction)_multibytecodec_MultibyteIncrementalDecoder_decode, METH_FASTCALL, _multibytecodec_MultibyteIncrementalDecoder_decode__doc__},
 
 static PyObject *
 _multibytecodec_MultibyteIncrementalDecoder_decode_impl(MultibyteIncrementalDecoderObject *self,
@@ -146,7 +146,7 @@
                                                         int final);
 
 static PyObject *
-_multibytecodec_MultibyteIncrementalDecoder_decode(MultibyteIncrementalDecoderObject *self, PyObject *args, PyObject *kwargs)
+_multibytecodec_MultibyteIncrementalDecoder_decode(MultibyteIncrementalDecoderObject *self, PyObject **args, Py_ssize_t nargs, PyObject *kwnames)
 {
     PyObject *return_value = NULL;
     static const char * const _keywords[] = {"input", "final", NULL};
@@ -154,7 +154,7 @@
     Py_buffer input = {NULL, NULL};
     int final = 0;
 
-    if (!_PyArg_ParseTupleAndKeywordsFast(args, kwargs, &_parser,
+    if (!_PyArg_ParseStack(args, nargs, kwnames, &_parser,
         &input, &final)) {
         goto exit;
     }
@@ -330,4 +330,4 @@
 
 #define _MULTIBYTECODEC___CREATE_CODEC_METHODDEF    \
     {"__create_codec", (PyCFunction)_multibytecodec___create_codec, METH_O, _multibytecodec___create_codec__doc__},
-/*[clinic end generated code: output=8e86fa162c85230b input=a9049054013a1b77]*/
+/*[clinic end generated code: output=134b9e36cb985939 input=a9049054013a1b77]*/