bpo-33012: Fix invalid function cast warnings with gcc 8 in Argument Clinic. (GH-6748)

Fix invalid function cast warnings with gcc 8
for method conventions different from METH_NOARGS, METH_O and
METH_VARARGS in Argument Clinic generated code.

77 files changed, 974 insertions, 643 deletions

diff --git a/Modules/_io/clinic/_iomodule.c.h b/Modules/_io/clinic/_iomodule.c.h
index b8ae2ce..f03e84e 100644
--- a/Modules/_io/clinic/_iomodule.c.h
+++ b/Modules/_io/clinic/_iomodule.c.h
@@ -127,7 +127,7 @@ PyDoc_STRVAR(_io_open__doc__,
 "opened in a binary mode.");
 
 #define _IO_OPEN_METHODDEF    \
-    {"open", (PyCFunction)_io_open, METH_FASTCALL|METH_KEYWORDS, _io_open__doc__},
+    {"open", (PyCFunction)(void(*)(void))_io_open, METH_FASTCALL|METH_KEYWORDS, _io_open__doc__},
 
 static PyObject *
 _io_open_impl(PyObject *module, PyObject *file, const char *mode,
@@ -158,4 +158,4 @@ _io_open(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kw
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=a9de1ae79c960e81 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=a2c1af38d943ccec input=a9049054013a1b77]*/
diff --git a/Modules/_io/clinic/bufferedio.c.h b/Modules/_io/clinic/bufferedio.c.h
index 7b93929..e78ca20 100644
--- a/Modules/_io/clinic/bufferedio.c.h
+++ b/Modules/_io/clinic/bufferedio.c.h
@@ -91,7 +91,7 @@ PyDoc_STRVAR(_io__Buffered_peek__doc__,
 "\n");
 
 #define _IO__BUFFERED_PEEK_METHODDEF    \
-    {"peek", (PyCFunction)_io__Buffered_peek, METH_FASTCALL, _io__Buffered_peek__doc__},
+    {"peek", (PyCFunction)(void(*)(void))_io__Buffered_peek, METH_FASTCALL, _io__Buffered_peek__doc__},
 
 static PyObject *
 _io__Buffered_peek_impl(buffered *self, Py_ssize_t size);
@@ -118,7 +118,7 @@ PyDoc_STRVAR(_io__Buffered_read__doc__,
 "\n");
 
 #define _IO__BUFFERED_READ_METHODDEF    \
-    {"read", (PyCFunction)_io__Buffered_read, METH_FASTCALL, _io__Buffered_read__doc__},
+    {"read", (PyCFunction)(void(*)(void))_io__Buffered_read, METH_FASTCALL, _io__Buffered_read__doc__},
 
 static PyObject *
 _io__Buffered_read_impl(buffered *self, Py_ssize_t n);
@@ -145,7 +145,7 @@ PyDoc_STRVAR(_io__Buffered_read1__doc__,
 "\n");
 
 #define _IO__BUFFERED_READ1_METHODDEF    \
-    {"read1", (PyCFunction)_io__Buffered_read1, METH_FASTCALL, _io__Buffered_read1__doc__},
+    {"read1", (PyCFunction)(void(*)(void))_io__Buffered_read1, METH_FASTCALL, _io__Buffered_read1__doc__},
 
 static PyObject *
 _io__Buffered_read1_impl(buffered *self, Py_ssize_t n);
@@ -234,7 +234,7 @@ PyDoc_STRVAR(_io__Buffered_readline__doc__,
 "\n");
 
 #define _IO__BUFFERED_READLINE_METHODDEF    \
-    {"readline", (PyCFunction)_io__Buffered_readline, METH_FASTCALL, _io__Buffered_readline__doc__},
+    {"readline", (PyCFunction)(void(*)(void))_io__Buffered_readline, METH_FASTCALL, _io__Buffered_readline__doc__},
 
 static PyObject *
 _io__Buffered_readline_impl(buffered *self, Py_ssize_t size);
@@ -261,7 +261,7 @@ PyDoc_STRVAR(_io__Buffered_seek__doc__,
 "\n");
 
 #define _IO__BUFFERED_SEEK_METHODDEF    \
-    {"seek", (PyCFunction)_io__Buffered_seek, METH_FASTCALL, _io__Buffered_seek__doc__},
+    {"seek", (PyCFunction)(void(*)(void))_io__Buffered_seek, METH_FASTCALL, _io__Buffered_seek__doc__},
 
 static PyObject *
 _io__Buffered_seek_impl(buffered *self, PyObject *targetobj, int whence);
@@ -289,7 +289,7 @@ PyDoc_STRVAR(_io__Buffered_truncate__doc__,
 "\n");
 
 #define _IO__BUFFERED_TRUNCATE_METHODDEF    \
-    {"truncate", (PyCFunction)_io__Buffered_truncate, METH_FASTCALL, _io__Buffered_truncate__doc__},
+    {"truncate", (PyCFunction)(void(*)(void))_io__Buffered_truncate, METH_FASTCALL, _io__Buffered_truncate__doc__},
 
 static PyObject *
 _io__Buffered_truncate_impl(buffered *self, PyObject *pos);
@@ -476,4 +476,4 @@ _io_BufferedRandom___init__(PyObject *self, PyObject *args, PyObject *kwargs)
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=9a20dd4eaabb5d58 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=cb4bf8d50533953b input=a9049054013a1b77]*/
diff --git a/Modules/_io/clinic/bytesio.c.h b/Modules/_io/clinic/bytesio.c.h
index 5c155cb..536f753 100644
--- a/Modules/_io/clinic/bytesio.c.h
+++ b/Modules/_io/clinic/bytesio.c.h
@@ -158,7 +158,7 @@ PyDoc_STRVAR(_io_BytesIO_read__doc__,
 "Return an empty bytes object at EOF.");
 
 #define _IO_BYTESIO_READ_METHODDEF    \
-    {"read", (PyCFunction)_io_BytesIO_read, METH_FASTCALL, _io_BytesIO_read__doc__},
+    {"read", (PyCFunction)(void(*)(void))_io_BytesIO_read, METH_FASTCALL, _io_BytesIO_read__doc__},
 
 static PyObject *
 _io_BytesIO_read_impl(bytesio *self, Py_ssize_t size);
@@ -189,7 +189,7 @@ PyDoc_STRVAR(_io_BytesIO_read1__doc__,
 "Return an empty bytes object at EOF.");
 
 #define _IO_BYTESIO_READ1_METHODDEF    \
-    {"read1", (PyCFunction)_io_BytesIO_read1, METH_FASTCALL, _io_BytesIO_read1__doc__},
+    {"read1", (PyCFunction)(void(*)(void))_io_BytesIO_read1, METH_FASTCALL, _io_BytesIO_read1__doc__},
 
 static PyObject *
 _io_BytesIO_read1_impl(bytesio *self, Py_ssize_t size);
@@ -221,7 +221,7 @@ PyDoc_STRVAR(_io_BytesIO_readline__doc__,
 "Return an empty bytes object at EOF.");
 
 #define _IO_BYTESIO_READLINE_METHODDEF    \
-    {"readline", (PyCFunction)_io_BytesIO_readline, METH_FASTCALL, _io_BytesIO_readline__doc__},
+    {"readline", (PyCFunction)(void(*)(void))_io_BytesIO_readline, METH_FASTCALL, _io_BytesIO_readline__doc__},
 
 static PyObject *
 _io_BytesIO_readline_impl(bytesio *self, Py_ssize_t size);
@@ -253,7 +253,7 @@ PyDoc_STRVAR(_io_BytesIO_readlines__doc__,
 "total number of bytes in the lines returned.");
 
 #define _IO_BYTESIO_READLINES_METHODDEF    \
-    {"readlines", (PyCFunction)_io_BytesIO_readlines, METH_FASTCALL, _io_BytesIO_readlines__doc__},
+    {"readlines", (PyCFunction)(void(*)(void))_io_BytesIO_readlines, METH_FASTCALL, _io_BytesIO_readlines__doc__},
 
 static PyObject *
 _io_BytesIO_readlines_impl(bytesio *self, PyObject *arg);
@@ -320,7 +320,7 @@ PyDoc_STRVAR(_io_BytesIO_truncate__doc__,
 "The current file position is unchanged.  Returns the new size.");
 
 #define _IO_BYTESIO_TRUNCATE_METHODDEF    \
-    {"truncate", (PyCFunction)_io_BytesIO_truncate, METH_FASTCALL, _io_BytesIO_truncate__doc__},
+    {"truncate", (PyCFunction)(void(*)(void))_io_BytesIO_truncate, METH_FASTCALL, _io_BytesIO_truncate__doc__},
 
 static PyObject *
 _io_BytesIO_truncate_impl(bytesio *self, Py_ssize_t size);
@@ -354,7 +354,7 @@ PyDoc_STRVAR(_io_BytesIO_seek__doc__,
 "Returns the new absolute position.");
 
 #define _IO_BYTESIO_SEEK_METHODDEF    \
-    {"seek", (PyCFunction)_io_BytesIO_seek, METH_FASTCALL, _io_BytesIO_seek__doc__},
+    {"seek", (PyCFunction)(void(*)(void))_io_BytesIO_seek, METH_FASTCALL, _io_BytesIO_seek__doc__},
 
 static PyObject *
 _io_BytesIO_seek_impl(bytesio *self, Py_ssize_t pos, int whence);
@@ -444,4 +444,4 @@ _io_BytesIO___init__(PyObject *self, PyObject *args, PyObject *kwargs)
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=9ba9a68c8c5669e7 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=89538a941ae1267a input=a9049054013a1b77]*/
diff --git a/Modules/_io/clinic/fileio.c.h b/Modules/_io/clinic/fileio.c.h
index 8a9958a..a66fc99 100644
--- a/Modules/_io/clinic/fileio.c.h
+++ b/Modules/_io/clinic/fileio.c.h
@@ -202,7 +202,7 @@ PyDoc_STRVAR(_io_FileIO_read__doc__,
 "Return an empty bytes object at EOF.");
 
 #define _IO_FILEIO_READ_METHODDEF    \
-    {"read", (PyCFunction)_io_FileIO_read, METH_FASTCALL, _io_FileIO_read__doc__},
+    {"read", (PyCFunction)(void(*)(void))_io_FileIO_read, METH_FASTCALL, _io_FileIO_read__doc__},
 
 static PyObject *
 _io_FileIO_read_impl(fileio *self, Py_ssize_t size);
@@ -274,7 +274,7 @@ PyDoc_STRVAR(_io_FileIO_seek__doc__,
 "Note that not all file objects are seekable.");
 
 #define _IO_FILEIO_SEEK_METHODDEF    \
-    {"seek", (PyCFunction)_io_FileIO_seek, METH_FASTCALL, _io_FileIO_seek__doc__},
+    {"seek", (PyCFunction)(void(*)(void))_io_FileIO_seek, METH_FASTCALL, _io_FileIO_seek__doc__},
 
 static PyObject *
 _io_FileIO_seek_impl(fileio *self, PyObject *pos, int whence);
@@ -328,7 +328,7 @@ PyDoc_STRVAR(_io_FileIO_truncate__doc__,
 "The current file position is changed to the value of size.");
 
 #define _IO_FILEIO_TRUNCATE_METHODDEF    \
-    {"truncate", (PyCFunction)_io_FileIO_truncate, METH_FASTCALL, _io_FileIO_truncate__doc__},
+    {"truncate", (PyCFunction)(void(*)(void))_io_FileIO_truncate, METH_FASTCALL, _io_FileIO_truncate__doc__},
 
 static PyObject *
 _io_FileIO_truncate_impl(fileio *self, PyObject *posobj);
@@ -373,4 +373,4 @@ _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=a8796438c8b7c49a input=a9049054013a1b77]*/
+/*[clinic end generated code: output=9d44e7035bce105d input=a9049054013a1b77]*/
diff --git a/Modules/_io/clinic/iobase.c.h b/Modules/_io/clinic/iobase.c.h
index e6f72cd..68eaadd 100644
--- a/Modules/_io/clinic/iobase.c.h
+++ b/Modules/_io/clinic/iobase.c.h
@@ -174,7 +174,7 @@ PyDoc_STRVAR(_io__IOBase_readline__doc__,
 "terminator(s) recognized.");
 
 #define _IO__IOBASE_READLINE_METHODDEF    \
-    {"readline", (PyCFunction)_io__IOBase_readline, METH_FASTCALL, _io__IOBase_readline__doc__},
+    {"readline", (PyCFunction)(void(*)(void))_io__IOBase_readline, METH_FASTCALL, _io__IOBase_readline__doc__},
 
 static PyObject *
 _io__IOBase_readline_impl(PyObject *self, Py_ssize_t limit);
@@ -206,7 +206,7 @@ PyDoc_STRVAR(_io__IOBase_readlines__doc__,
 "lines so far exceeds hint.");
 
 #define _IO__IOBASE_READLINES_METHODDEF    \
-    {"readlines", (PyCFunction)_io__IOBase_readlines, METH_FASTCALL, _io__IOBase_readlines__doc__},
+    {"readlines", (PyCFunction)(void(*)(void))_io__IOBase_readlines, METH_FASTCALL, _io__IOBase_readlines__doc__},
 
 static PyObject *
 _io__IOBase_readlines_impl(PyObject *self, Py_ssize_t hint);
@@ -241,7 +241,7 @@ PyDoc_STRVAR(_io__RawIOBase_read__doc__,
 "\n");
 
 #define _IO__RAWIOBASE_READ_METHODDEF    \
-    {"read", (PyCFunction)_io__RawIOBase_read, METH_FASTCALL, _io__RawIOBase_read__doc__},
+    {"read", (PyCFunction)(void(*)(void))_io__RawIOBase_read, METH_FASTCALL, _io__RawIOBase_read__doc__},
 
 static PyObject *
 _io__RawIOBase_read_impl(PyObject *self, Py_ssize_t n);
@@ -279,4 +279,4 @@ _io__RawIOBase_readall(PyObject *self, PyObject *Py_UNUSED(ignored))
 {
     return _io__RawIOBase_readall_impl(self);
 }
-/*[clinic end generated code: output=64989ec3dbf44a7c input=a9049054013a1b77]*/
+/*[clinic end generated code: output=cde4b0e96a4e69e3 input=a9049054013a1b77]*/
diff --git a/Modules/_io/clinic/stringio.c.h b/Modules/_io/clinic/stringio.c.h
index 72b2540..3181688 100644
--- a/Modules/_io/clinic/stringio.c.h
+++ b/Modules/_io/clinic/stringio.c.h
@@ -48,7 +48,7 @@ PyDoc_STRVAR(_io_StringIO_read__doc__,
 "is reached. Return an empty string at EOF.");
 
 #define _IO_STRINGIO_READ_METHODDEF    \
-    {"read", (PyCFunction)_io_StringIO_read, METH_FASTCALL, _io_StringIO_read__doc__},
+    {"read", (PyCFunction)(void(*)(void))_io_StringIO_read, METH_FASTCALL, _io_StringIO_read__doc__},
 
 static PyObject *
 _io_StringIO_read_impl(stringio *self, Py_ssize_t size);
@@ -78,7 +78,7 @@ PyDoc_STRVAR(_io_StringIO_readline__doc__,
 "Returns an empty string if EOF is hit immediately.");
 
 #define _IO_STRINGIO_READLINE_METHODDEF    \
-    {"readline", (PyCFunction)_io_StringIO_readline, METH_FASTCALL, _io_StringIO_readline__doc__},
+    {"readline", (PyCFunction)(void(*)(void))_io_StringIO_readline, METH_FASTCALL, _io_StringIO_readline__doc__},
 
 static PyObject *
 _io_StringIO_readline_impl(stringio *self, Py_ssize_t size);
@@ -110,7 +110,7 @@ PyDoc_STRVAR(_io_StringIO_truncate__doc__,
 "Returns the new absolute position.");
 
 #define _IO_STRINGIO_TRUNCATE_METHODDEF    \
-    {"truncate", (PyCFunction)_io_StringIO_truncate, METH_FASTCALL, _io_StringIO_truncate__doc__},
+    {"truncate", (PyCFunction)(void(*)(void))_io_StringIO_truncate, METH_FASTCALL, _io_StringIO_truncate__doc__},
 
 static PyObject *
 _io_StringIO_truncate_impl(stringio *self, Py_ssize_t size);
@@ -144,7 +144,7 @@ PyDoc_STRVAR(_io_StringIO_seek__doc__,
 "Returns the new absolute position.");
 
 #define _IO_STRINGIO_SEEK_METHODDEF    \
-    {"seek", (PyCFunction)_io_StringIO_seek, METH_FASTCALL, _io_StringIO_seek__doc__},
+    {"seek", (PyCFunction)(void(*)(void))_io_StringIO_seek, METH_FASTCALL, _io_StringIO_seek__doc__},
 
 static PyObject *
 _io_StringIO_seek_impl(stringio *self, Py_ssize_t pos, int whence);
@@ -286,4 +286,4 @@ _io_StringIO_seekable(stringio *self, PyObject *Py_UNUSED(ignored))
 {
     return _io_StringIO_seekable_impl(self);
 }
-/*[clinic end generated code: output=73c4d6e5cc3b1a58 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=00c3c7a1c6ea6773 input=a9049054013a1b77]*/
diff --git a/Modules/_io/clinic/textio.c.h b/Modules/_io/clinic/textio.c.h
index 60f5dab..3ad3d67 100644
--- a/Modules/_io/clinic/textio.c.h
+++ b/Modules/_io/clinic/textio.c.h
@@ -46,7 +46,7 @@ PyDoc_STRVAR(_io_IncrementalNewlineDecoder_decode__doc__,
 "\n");
 
 #define _IO_INCREMENTALNEWLINEDECODER_DECODE_METHODDEF    \
-    {"decode", (PyCFunction)_io_IncrementalNewlineDecoder_decode, METH_FASTCALL|METH_KEYWORDS, _io_IncrementalNewlineDecoder_decode__doc__},
+    {"decode", (PyCFunction)(void(*)(void))_io_IncrementalNewlineDecoder_decode, METH_FASTCALL|METH_KEYWORDS, _io_IncrementalNewlineDecoder_decode__doc__},
 
 static PyObject *
 _io_IncrementalNewlineDecoder_decode_impl(nldecoder_object *self,
@@ -186,7 +186,7 @@ PyDoc_STRVAR(_io_TextIOWrapper_reconfigure__doc__,
 "This also does an implicit stream flush.");
 
 #define _IO_TEXTIOWRAPPER_RECONFIGURE_METHODDEF    \
-    {"reconfigure", (PyCFunction)_io_TextIOWrapper_reconfigure, METH_FASTCALL|METH_KEYWORDS, _io_TextIOWrapper_reconfigure__doc__},
+    {"reconfigure", (PyCFunction)(void(*)(void))_io_TextIOWrapper_reconfigure, METH_FASTCALL|METH_KEYWORDS, _io_TextIOWrapper_reconfigure__doc__},
 
 static PyObject *
 _io_TextIOWrapper_reconfigure_impl(textio *self, PyObject *encoding,
@@ -265,7 +265,7 @@ PyDoc_STRVAR(_io_TextIOWrapper_read__doc__,
 "\n");
 
 #define _IO_TEXTIOWRAPPER_READ_METHODDEF    \
-    {"read", (PyCFunction)_io_TextIOWrapper_read, METH_FASTCALL, _io_TextIOWrapper_read__doc__},
+    {"read", (PyCFunction)(void(*)(void))_io_TextIOWrapper_read, METH_FASTCALL, _io_TextIOWrapper_read__doc__},
 
 static PyObject *
 _io_TextIOWrapper_read_impl(textio *self, Py_ssize_t n);
@@ -292,7 +292,7 @@ PyDoc_STRVAR(_io_TextIOWrapper_readline__doc__,
 "\n");
 
 #define _IO_TEXTIOWRAPPER_READLINE_METHODDEF    \
-    {"readline", (PyCFunction)_io_TextIOWrapper_readline, METH_FASTCALL, _io_TextIOWrapper_readline__doc__},
+    {"readline", (PyCFunction)(void(*)(void))_io_TextIOWrapper_readline, METH_FASTCALL, _io_TextIOWrapper_readline__doc__},
 
 static PyObject *
 _io_TextIOWrapper_readline_impl(textio *self, Py_ssize_t size);
@@ -319,7 +319,7 @@ PyDoc_STRVAR(_io_TextIOWrapper_seek__doc__,
 "\n");
 
 #define _IO_TEXTIOWRAPPER_SEEK_METHODDEF    \
-    {"seek", (PyCFunction)_io_TextIOWrapper_seek, METH_FASTCALL, _io_TextIOWrapper_seek__doc__},
+    {"seek", (PyCFunction)(void(*)(void))_io_TextIOWrapper_seek, METH_FASTCALL, _io_TextIOWrapper_seek__doc__},
 
 static PyObject *
 _io_TextIOWrapper_seek_impl(textio *self, PyObject *cookieObj, int whence);
@@ -364,7 +364,7 @@ PyDoc_STRVAR(_io_TextIOWrapper_truncate__doc__,
 "\n");
 
 #define _IO_TEXTIOWRAPPER_TRUNCATE_METHODDEF    \
-    {"truncate", (PyCFunction)_io_TextIOWrapper_truncate, METH_FASTCALL, _io_TextIOWrapper_truncate__doc__},
+    {"truncate", (PyCFunction)(void(*)(void))_io_TextIOWrapper_truncate, METH_FASTCALL, _io_TextIOWrapper_truncate__doc__},
 
 static PyObject *
 _io_TextIOWrapper_truncate_impl(textio *self, PyObject *pos);
@@ -504,4 +504,4 @@ _io_TextIOWrapper_close(textio *self, PyObject *Py_UNUSED(ignored))
 {
     return _io_TextIOWrapper_close_impl(self);
 }
-/*[clinic end generated code: output=b5be870b0039d577 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=a811badd76bfe92e input=a9049054013a1b77]*/
diff --git a/Modules/_io/clinic/winconsoleio.c.h b/Modules/_io/clinic/winconsoleio.c.h
index 2291225..6e72da1 100644
--- a/Modules/_io/clinic/winconsoleio.c.h
+++ b/Modules/_io/clinic/winconsoleio.c.h
@@ -209,7 +209,7 @@ PyDoc_STRVAR(_io__WindowsConsoleIO_read__doc__,
 "Return an empty bytes object at EOF.");
 
 #define _IO__WINDOWSCONSOLEIO_READ_METHODDEF    \
-    {"read", (PyCFunction)_io__WindowsConsoleIO_read, METH_FASTCALL, _io__WindowsConsoleIO_read__doc__},
+    {"read", (PyCFunction)(void(*)(void))_io__WindowsConsoleIO_read, METH_FASTCALL, _io__WindowsConsoleIO_read__doc__},
 
 static PyObject *
 _io__WindowsConsoleIO_read_impl(winconsoleio *self, Py_ssize_t size);
@@ -328,4 +328,4 @@ _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=6d351a8200a8e848 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=080af41338394b49 input=a9049054013a1b77]*/
diff --git a/Modules/cjkcodecs/clinic/multibytecodec.c.h b/Modules/cjkcodecs/clinic/multibytecodec.c.h
index a58bb64..74e45bd 100644
--- a/Modules/cjkcodecs/clinic/multibytecodec.c.h
+++ b/Modules/cjkcodecs/clinic/multibytecodec.c.h
@@ -14,7 +14,7 @@ PyDoc_STRVAR(_multibytecodec_MultibyteCodec_encode__doc__,
 "registered with codecs.register_error that can handle UnicodeEncodeErrors.");
 
 #define _MULTIBYTECODEC_MULTIBYTECODEC_ENCODE_METHODDEF    \
-    {"encode", (PyCFunction)_multibytecodec_MultibyteCodec_encode, METH_FASTCALL|METH_KEYWORDS, _multibytecodec_MultibyteCodec_encode__doc__},
+    {"encode", (PyCFunction)(void(*)(void))_multibytecodec_MultibyteCodec_encode, METH_FASTCALL|METH_KEYWORDS, _multibytecodec_MultibyteCodec_encode__doc__},
 
 static PyObject *
 _multibytecodec_MultibyteCodec_encode_impl(MultibyteCodecObject *self,
@@ -52,7 +52,7 @@ PyDoc_STRVAR(_multibytecodec_MultibyteCodec_decode__doc__,
 "codecs.register_error that is able to handle UnicodeDecodeErrors.\"");
 
 #define _MULTIBYTECODEC_MULTIBYTECODEC_DECODE_METHODDEF    \
-    {"decode", (PyCFunction)_multibytecodec_MultibyteCodec_decode, METH_FASTCALL|METH_KEYWORDS, _multibytecodec_MultibyteCodec_decode__doc__},
+    {"decode", (PyCFunction)(void(*)(void))_multibytecodec_MultibyteCodec_decode, METH_FASTCALL|METH_KEYWORDS, _multibytecodec_MultibyteCodec_decode__doc__},
 
 static PyObject *
 _multibytecodec_MultibyteCodec_decode_impl(MultibyteCodecObject *self,
@@ -89,7 +89,7 @@ PyDoc_STRVAR(_multibytecodec_MultibyteIncrementalEncoder_encode__doc__,
 "\n");
 
 #define _MULTIBYTECODEC_MULTIBYTEINCREMENTALENCODER_ENCODE_METHODDEF    \
-    {"encode", (PyCFunction)_multibytecodec_MultibyteIncrementalEncoder_encode, METH_FASTCALL|METH_KEYWORDS, _multibytecodec_MultibyteIncrementalEncoder_encode__doc__},
+    {"encode", (PyCFunction)(void(*)(void))_multibytecodec_MultibyteIncrementalEncoder_encode, METH_FASTCALL|METH_KEYWORDS, _multibytecodec_MultibyteIncrementalEncoder_encode__doc__},
 
 static PyObject *
 _multibytecodec_MultibyteIncrementalEncoder_encode_impl(MultibyteIncrementalEncoderObject *self,
@@ -182,7 +182,7 @@ PyDoc_STRVAR(_multibytecodec_MultibyteIncrementalDecoder_decode__doc__,
 "\n");
 
 #define _MULTIBYTECODEC_MULTIBYTEINCREMENTALDECODER_DECODE_METHODDEF    \
-    {"decode", (PyCFunction)_multibytecodec_MultibyteIncrementalDecoder_decode, METH_FASTCALL|METH_KEYWORDS, _multibytecodec_MultibyteIncrementalDecoder_decode__doc__},
+    {"decode", (PyCFunction)(void(*)(void))_multibytecodec_MultibyteIncrementalDecoder_decode, METH_FASTCALL|METH_KEYWORDS, _multibytecodec_MultibyteIncrementalDecoder_decode__doc__},
 
 static PyObject *
 _multibytecodec_MultibyteIncrementalDecoder_decode_impl(MultibyteIncrementalDecoderObject *self,
@@ -280,7 +280,7 @@ PyDoc_STRVAR(_multibytecodec_MultibyteStreamReader_read__doc__,
 "\n");
 
 #define _MULTIBYTECODEC_MULTIBYTESTREAMREADER_READ_METHODDEF    \
-    {"read", (PyCFunction)_multibytecodec_MultibyteStreamReader_read, METH_FASTCALL, _multibytecodec_MultibyteStreamReader_read__doc__},
+    {"read", (PyCFunction)(void(*)(void))_multibytecodec_MultibyteStreamReader_read, METH_FASTCALL, _multibytecodec_MultibyteStreamReader_read__doc__},
 
 static PyObject *
 _multibytecodec_MultibyteStreamReader_read_impl(MultibyteStreamReaderObject *self,
@@ -309,7 +309,7 @@ PyDoc_STRVAR(_multibytecodec_MultibyteStreamReader_readline__doc__,
 "\n");
 
 #define _MULTIBYTECODEC_MULTIBYTESTREAMREADER_READLINE_METHODDEF    \
-    {"readline", (PyCFunction)_multibytecodec_MultibyteStreamReader_readline, METH_FASTCALL, _multibytecodec_MultibyteStreamReader_readline__doc__},
+    {"readline", (PyCFunction)(void(*)(void))_multibytecodec_MultibyteStreamReader_readline, METH_FASTCALL, _multibytecodec_MultibyteStreamReader_readline__doc__},
 
 static PyObject *
 _multibytecodec_MultibyteStreamReader_readline_impl(MultibyteStreamReaderObject *self,
@@ -338,7 +338,7 @@ PyDoc_STRVAR(_multibytecodec_MultibyteStreamReader_readlines__doc__,
 "\n");
 
 #define _MULTIBYTECODEC_MULTIBYTESTREAMREADER_READLINES_METHODDEF    \
-    {"readlines", (PyCFunction)_multibytecodec_MultibyteStreamReader_readlines, METH_FASTCALL, _multibytecodec_MultibyteStreamReader_readlines__doc__},
+    {"readlines", (PyCFunction)(void(*)(void))_multibytecodec_MultibyteStreamReader_readlines, METH_FASTCALL, _multibytecodec_MultibyteStreamReader_readlines__doc__},
 
 static PyObject *
 _multibytecodec_MultibyteStreamReader_readlines_impl(MultibyteStreamReaderObject *self,
@@ -418,4 +418,4 @@ 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=2fa0a38494716b97 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=4c1dc8015ee5abb4 input=a9049054013a1b77]*/
diff --git a/Modules/clinic/_abc.c.h b/Modules/clinic/_abc.c.h
index b1ec371..22ddb6c 100644
--- a/Modules/clinic/_abc.c.h
+++ b/Modules/clinic/_abc.c.h
@@ -53,7 +53,7 @@ PyDoc_STRVAR(_abc__abc_register__doc__,
 "Internal ABC helper for subclasss registration. Should be never used outside abc module.");
 
 #define _ABC__ABC_REGISTER_METHODDEF    \
-    {"_abc_register", (PyCFunction)_abc__abc_register, METH_FASTCALL, _abc__abc_register__doc__},
+    {"_abc_register", (PyCFunction)(void(*)(void))_abc__abc_register, METH_FASTCALL, _abc__abc_register__doc__},
 
 static PyObject *
 _abc__abc_register_impl(PyObject *module, PyObject *self, PyObject *subclass);
@@ -83,7 +83,7 @@ PyDoc_STRVAR(_abc__abc_instancecheck__doc__,
 "Internal ABC helper for instance checks. Should be never used outside abc module.");
 
 #define _ABC__ABC_INSTANCECHECK_METHODDEF    \
-    {"_abc_instancecheck", (PyCFunction)_abc__abc_instancecheck, METH_FASTCALL, _abc__abc_instancecheck__doc__},
+    {"_abc_instancecheck", (PyCFunction)(void(*)(void))_abc__abc_instancecheck, METH_FASTCALL, _abc__abc_instancecheck__doc__},
 
 static PyObject *
 _abc__abc_instancecheck_impl(PyObject *module, PyObject *self,
@@ -114,7 +114,7 @@ PyDoc_STRVAR(_abc__abc_subclasscheck__doc__,
 "Internal ABC helper for subclasss checks. Should be never used outside abc module.");
 
 #define _ABC__ABC_SUBCLASSCHECK_METHODDEF    \
-    {"_abc_subclasscheck", (PyCFunction)_abc__abc_subclasscheck, METH_FASTCALL, _abc__abc_subclasscheck__doc__},
+    {"_abc_subclasscheck", (PyCFunction)(void(*)(void))_abc__abc_subclasscheck, METH_FASTCALL, _abc__abc_subclasscheck__doc__},
 
 static PyObject *
 _abc__abc_subclasscheck_impl(PyObject *module, PyObject *self,
@@ -159,4 +159,4 @@ _abc_get_cache_token(PyObject *module, PyObject *Py_UNUSED(ignored))
 {
     return _abc_get_cache_token_impl(module);
 }
-/*[clinic end generated code: output=9d6f861a8f45bc6f input=a9049054013a1b77]*/
+/*[clinic end generated code: output=606db3cb658d9240 input=a9049054013a1b77]*/
diff --git a/Modules/clinic/_asynciomodule.c.h b/Modules/clinic/_asynciomodule.c.h
index 4f5326f..860b57f 100644
--- a/Modules/clinic/_asynciomodule.c.h
+++ b/Modules/clinic/_asynciomodule.c.h
@@ -120,7 +120,7 @@ PyDoc_STRVAR(_asyncio_Future_add_done_callback__doc__,
 "scheduled with call_soon.");
 
 #define _ASYNCIO_FUTURE_ADD_DONE_CALLBACK_METHODDEF    \
-    {"add_done_callback", (PyCFunction)_asyncio_Future_add_done_callback, METH_FASTCALL|METH_KEYWORDS, _asyncio_Future_add_done_callback__doc__},
+    {"add_done_callback", (PyCFunction)(void(*)(void))_asyncio_Future_add_done_callback, METH_FASTCALL|METH_KEYWORDS, _asyncio_Future_add_done_callback__doc__},
 
 static PyObject *
 _asyncio_Future_add_done_callback_impl(FutureObj *self, PyObject *fn,
@@ -293,7 +293,7 @@ PyDoc_STRVAR(_asyncio_Task_current_task__doc__,
 "None is returned when called not in the context of a Task.");
 
 #define _ASYNCIO_TASK_CURRENT_TASK_METHODDEF    \
-    {"current_task", (PyCFunction)_asyncio_Task_current_task, METH_FASTCALL|METH_KEYWORDS|METH_CLASS, _asyncio_Task_current_task__doc__},
+    {"current_task", (PyCFunction)(void(*)(void))_asyncio_Task_current_task, METH_FASTCALL|METH_KEYWORDS|METH_CLASS, _asyncio_Task_current_task__doc__},
 
 static PyObject *
 _asyncio_Task_current_task_impl(PyTypeObject *type, PyObject *loop);
@@ -325,7 +325,7 @@ PyDoc_STRVAR(_asyncio_Task_all_tasks__doc__,
 "By default all tasks for the current event loop are returned.");
 
 #define _ASYNCIO_TASK_ALL_TASKS_METHODDEF    \
-    {"all_tasks", (PyCFunction)_asyncio_Task_all_tasks, METH_FASTCALL|METH_KEYWORDS|METH_CLASS, _asyncio_Task_all_tasks__doc__},
+    {"all_tasks", (PyCFunction)(void(*)(void))_asyncio_Task_all_tasks, METH_FASTCALL|METH_KEYWORDS|METH_CLASS, _asyncio_Task_all_tasks__doc__},
 
 static PyObject *
 _asyncio_Task_all_tasks_impl(PyTypeObject *type, PyObject *loop);
@@ -425,7 +425,7 @@ PyDoc_STRVAR(_asyncio_Task_get_stack__doc__,
 "returned for a suspended coroutine.");
 
 #define _ASYNCIO_TASK_GET_STACK_METHODDEF    \
-    {"get_stack", (PyCFunction)_asyncio_Task_get_stack, METH_FASTCALL|METH_KEYWORDS, _asyncio_Task_get_stack__doc__},
+    {"get_stack", (PyCFunction)(void(*)(void))_asyncio_Task_get_stack, METH_FASTCALL|METH_KEYWORDS, _asyncio_Task_get_stack__doc__},
 
 static PyObject *
 _asyncio_Task_get_stack_impl(TaskObj *self, PyObject *limit);
@@ -461,7 +461,7 @@ PyDoc_STRVAR(_asyncio_Task_print_stack__doc__,
 "to sys.stderr.");
 
 #define _ASYNCIO_TASK_PRINT_STACK_METHODDEF    \
-    {"print_stack", (PyCFunction)_asyncio_Task_print_stack, METH_FASTCALL|METH_KEYWORDS, _asyncio_Task_print_stack__doc__},
+    {"print_stack", (PyCFunction)(void(*)(void))_asyncio_Task_print_stack, METH_FASTCALL|METH_KEYWORDS, _asyncio_Task_print_stack__doc__},
 
 static PyObject *
 _asyncio_Task_print_stack_impl(TaskObj *self, PyObject *limit,
@@ -614,7 +614,7 @@ PyDoc_STRVAR(_asyncio__register_task__doc__,
 "Returns None.");
 
 #define _ASYNCIO__REGISTER_TASK_METHODDEF    \
-    {"_register_task", (PyCFunction)_asyncio__register_task, METH_FASTCALL|METH_KEYWORDS, _asyncio__register_task__doc__},
+    {"_register_task", (PyCFunction)(void(*)(void))_asyncio__register_task, METH_FASTCALL|METH_KEYWORDS, _asyncio__register_task__doc__},
 
 static PyObject *
 _asyncio__register_task_impl(PyObject *module, PyObject *task);
@@ -646,7 +646,7 @@ PyDoc_STRVAR(_asyncio__unregister_task__doc__,
 "Returns None.");
 
 #define _ASYNCIO__UNREGISTER_TASK_METHODDEF    \
-    {"_unregister_task", (PyCFunction)_asyncio__unregister_task, METH_FASTCALL|METH_KEYWORDS, _asyncio__unregister_task__doc__},
+    {"_unregister_task", (PyCFunction)(void(*)(void))_asyncio__unregister_task, METH_FASTCALL|METH_KEYWORDS, _asyncio__unregister_task__doc__},
 
 static PyObject *
 _asyncio__unregister_task_impl(PyObject *module, PyObject *task);
@@ -680,7 +680,7 @@ PyDoc_STRVAR(_asyncio__enter_task__doc__,
 "Returns None.");
 
 #define _ASYNCIO__ENTER_TASK_METHODDEF    \
-    {"_enter_task", (PyCFunction)_asyncio__enter_task, METH_FASTCALL|METH_KEYWORDS, _asyncio__enter_task__doc__},
+    {"_enter_task", (PyCFunction)(void(*)(void))_asyncio__enter_task, METH_FASTCALL|METH_KEYWORDS, _asyncio__enter_task__doc__},
 
 static PyObject *
 _asyncio__enter_task_impl(PyObject *module, PyObject *loop, PyObject *task);
@@ -715,7 +715,7 @@ PyDoc_STRVAR(_asyncio__leave_task__doc__,
 "Returns None.");
 
 #define _ASYNCIO__LEAVE_TASK_METHODDEF    \
-    {"_leave_task", (PyCFunction)_asyncio__leave_task, METH_FASTCALL|METH_KEYWORDS, _asyncio__leave_task__doc__},
+    {"_leave_task", (PyCFunction)(void(*)(void))_asyncio__leave_task, METH_FASTCALL|METH_KEYWORDS, _asyncio__leave_task__doc__},
 
 static PyObject *
 _asyncio__leave_task_impl(PyObject *module, PyObject *loop, PyObject *task);
@@ -738,4 +738,4 @@ _asyncio__leave_task(PyObject *module, PyObject *const *args, Py_ssize_t nargs,
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=67da879c9f841505 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=fd474bdc8f03d5ae input=a9049054013a1b77]*/
diff --git a/Modules/clinic/_bz2module.c.h b/Modules/clinic/_bz2module.c.h
index 601bcc6..f538719 100644
--- a/Modules/clinic/_bz2module.c.h
+++ b/Modules/clinic/_bz2module.c.h
@@ -115,7 +115,7 @@ PyDoc_STRVAR(_bz2_BZ2Decompressor_decompress__doc__,
 "the unused_data attribute.");
 
 #define _BZ2_BZ2DECOMPRESSOR_DECOMPRESS_METHODDEF    \
-    {"decompress", (PyCFunction)_bz2_BZ2Decompressor_decompress, METH_FASTCALL|METH_KEYWORDS, _bz2_BZ2Decompressor_decompress__doc__},
+    {"decompress", (PyCFunction)(void(*)(void))_bz2_BZ2Decompressor_decompress, METH_FASTCALL|METH_KEYWORDS, _bz2_BZ2Decompressor_decompress__doc__},
 
 static PyObject *
 _bz2_BZ2Decompressor_decompress_impl(BZ2Decompressor *self, Py_buffer *data,
@@ -174,4 +174,4 @@ _bz2_BZ2Decompressor___init__(PyObject *self, PyObject *args, PyObject *kwargs)
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=564a0313177fff63 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=e47f4255d265b07d input=a9049054013a1b77]*/
diff --git a/Modules/clinic/_codecsmodule.c.h b/Modules/clinic/_codecsmodule.c.h
index 2f660fd..06f0572 100644
--- a/Modules/clinic/_codecsmodule.c.h
+++ b/Modules/clinic/_codecsmodule.c.h
@@ -55,7 +55,7 @@ PyDoc_STRVAR(_codecs_encode__doc__,
 "codecs.register_error that can handle ValueErrors.");
 
 #define _CODECS_ENCODE_METHODDEF    \
-    {"encode", (PyCFunction)_codecs_encode, METH_FASTCALL|METH_KEYWORDS, _codecs_encode__doc__},
+    {"encode", (PyCFunction)(void(*)(void))_codecs_encode, METH_FASTCALL|METH_KEYWORDS, _codecs_encode__doc__},
 
 static PyObject *
 _codecs_encode_impl(PyObject *module, PyObject *obj, const char *encoding,
@@ -94,7 +94,7 @@ PyDoc_STRVAR(_codecs_decode__doc__,
 "codecs.register_error that can handle ValueErrors.");
 
 #define _CODECS_DECODE_METHODDEF    \
-    {"decode", (PyCFunction)_codecs_decode, METH_FASTCALL|METH_KEYWORDS, _codecs_decode__doc__},
+    {"decode", (PyCFunction)(void(*)(void))_codecs_decode, METH_FASTCALL|METH_KEYWORDS, _codecs_decode__doc__},
 
 static PyObject *
 _codecs_decode_impl(PyObject *module, PyObject *obj, const char *encoding,
@@ -153,7 +153,7 @@ PyDoc_STRVAR(_codecs_escape_decode__doc__,
 "\n");
 
 #define _CODECS_ESCAPE_DECODE_METHODDEF    \
-    {"escape_decode", (PyCFunction)_codecs_escape_decode, METH_FASTCALL, _codecs_escape_decode__doc__},
+    {"escape_decode", (PyCFunction)(void(*)(void))_codecs_escape_decode, METH_FASTCALL, _codecs_escape_decode__doc__},
 
 static PyObject *
 _codecs_escape_decode_impl(PyObject *module, Py_buffer *data,
@@ -187,7 +187,7 @@ PyDoc_STRVAR(_codecs_escape_encode__doc__,
 "\n");
 
 #define _CODECS_ESCAPE_ENCODE_METHODDEF    \
-    {"escape_encode", (PyCFunction)_codecs_escape_encode, METH_FASTCALL, _codecs_escape_encode__doc__},
+    {"escape_encode", (PyCFunction)(void(*)(void))_codecs_escape_encode, METH_FASTCALL, _codecs_escape_encode__doc__},
 
 static PyObject *
 _codecs_escape_encode_impl(PyObject *module, PyObject *data,
@@ -216,7 +216,7 @@ PyDoc_STRVAR(_codecs_unicode_internal_decode__doc__,
 "\n");
 
 #define _CODECS_UNICODE_INTERNAL_DECODE_METHODDEF    \
-    {"unicode_internal_decode", (PyCFunction)_codecs_unicode_internal_decode, METH_FASTCALL, _codecs_unicode_internal_decode__doc__},
+    {"unicode_internal_decode", (PyCFunction)(void(*)(void))_codecs_unicode_internal_decode, METH_FASTCALL, _codecs_unicode_internal_decode__doc__},
 
 static PyObject *
 _codecs_unicode_internal_decode_impl(PyObject *module, PyObject *obj,
@@ -245,7 +245,7 @@ PyDoc_STRVAR(_codecs_utf_7_decode__doc__,
 "\n");
 
 #define _CODECS_UTF_7_DECODE_METHODDEF    \
-    {"utf_7_decode", (PyCFunction)_codecs_utf_7_decode, METH_FASTCALL, _codecs_utf_7_decode__doc__},
+    {"utf_7_decode", (PyCFunction)(void(*)(void))_codecs_utf_7_decode, METH_FASTCALL, _codecs_utf_7_decode__doc__},
 
 static PyObject *
 _codecs_utf_7_decode_impl(PyObject *module, Py_buffer *data,
@@ -280,7 +280,7 @@ PyDoc_STRVAR(_codecs_utf_8_decode__doc__,
 "\n");
 
 #define _CODECS_UTF_8_DECODE_METHODDEF    \
-    {"utf_8_decode", (PyCFunction)_codecs_utf_8_decode, METH_FASTCALL, _codecs_utf_8_decode__doc__},
+    {"utf_8_decode", (PyCFunction)(void(*)(void))_codecs_utf_8_decode, METH_FASTCALL, _codecs_utf_8_decode__doc__},
 
 static PyObject *
 _codecs_utf_8_decode_impl(PyObject *module, Py_buffer *data,
@@ -315,7 +315,7 @@ PyDoc_STRVAR(_codecs_utf_16_decode__doc__,
 "\n");
 
 #define _CODECS_UTF_16_DECODE_METHODDEF    \
-    {"utf_16_decode", (PyCFunction)_codecs_utf_16_decode, METH_FASTCALL, _codecs_utf_16_decode__doc__},
+    {"utf_16_decode", (PyCFunction)(void(*)(void))_codecs_utf_16_decode, METH_FASTCALL, _codecs_utf_16_decode__doc__},
 
 static PyObject *
 _codecs_utf_16_decode_impl(PyObject *module, Py_buffer *data,
@@ -350,7 +350,7 @@ PyDoc_STRVAR(_codecs_utf_16_le_decode__doc__,
 "\n");
 
 #define _CODECS_UTF_16_LE_DECODE_METHODDEF    \
-    {"utf_16_le_decode", (PyCFunction)_codecs_utf_16_le_decode, METH_FASTCALL, _codecs_utf_16_le_decode__doc__},
+    {"utf_16_le_decode", (PyCFunction)(void(*)(void))_codecs_utf_16_le_decode, METH_FASTCALL, _codecs_utf_16_le_decode__doc__},
 
 static PyObject *
 _codecs_utf_16_le_decode_impl(PyObject *module, Py_buffer *data,
@@ -385,7 +385,7 @@ PyDoc_STRVAR(_codecs_utf_16_be_decode__doc__,
 "\n");
 
 #define _CODECS_UTF_16_BE_DECODE_METHODDEF    \
-    {"utf_16_be_decode", (PyCFunction)_codecs_utf_16_be_decode, METH_FASTCALL, _codecs_utf_16_be_decode__doc__},
+    {"utf_16_be_decode", (PyCFunction)(void(*)(void))_codecs_utf_16_be_decode, METH_FASTCALL, _codecs_utf_16_be_decode__doc__},
 
 static PyObject *
 _codecs_utf_16_be_decode_impl(PyObject *module, Py_buffer *data,
@@ -421,7 +421,7 @@ PyDoc_STRVAR(_codecs_utf_16_ex_decode__doc__,
 "\n");
 
 #define _CODECS_UTF_16_EX_DECODE_METHODDEF    \
-    {"utf_16_ex_decode", (PyCFunction)_codecs_utf_16_ex_decode, METH_FASTCALL, _codecs_utf_16_ex_decode__doc__},
+    {"utf_16_ex_decode", (PyCFunction)(void(*)(void))_codecs_utf_16_ex_decode, METH_FASTCALL, _codecs_utf_16_ex_decode__doc__},
 
 static PyObject *
 _codecs_utf_16_ex_decode_impl(PyObject *module, Py_buffer *data,
@@ -457,7 +457,7 @@ PyDoc_STRVAR(_codecs_utf_32_decode__doc__,
 "\n");
 
 #define _CODECS_UTF_32_DECODE_METHODDEF    \
-    {"utf_32_decode", (PyCFunction)_codecs_utf_32_decode, METH_FASTCALL, _codecs_utf_32_decode__doc__},
+    {"utf_32_decode", (PyCFunction)(void(*)(void))_codecs_utf_32_decode, METH_FASTCALL, _codecs_utf_32_decode__doc__},
 
 static PyObject *
 _codecs_utf_32_decode_impl(PyObject *module, Py_buffer *data,
@@ -492,7 +492,7 @@ PyDoc_STRVAR(_codecs_utf_32_le_decode__doc__,
 "\n");
 
 #define _CODECS_UTF_32_LE_DECODE_METHODDEF    \
-    {"utf_32_le_decode", (PyCFunction)_codecs_utf_32_le_decode, METH_FASTCALL, _codecs_utf_32_le_decode__doc__},
+    {"utf_32_le_decode", (PyCFunction)(void(*)(void))_codecs_utf_32_le_decode, METH_FASTCALL, _codecs_utf_32_le_decode__doc__},
 
 static PyObject *
 _codecs_utf_32_le_decode_impl(PyObject *module, Py_buffer *data,
@@ -527,7 +527,7 @@ PyDoc_STRVAR(_codecs_utf_32_be_decode__doc__,
 "\n");
 
 #define _CODECS_UTF_32_BE_DECODE_METHODDEF    \
-    {"utf_32_be_decode", (PyCFunction)_codecs_utf_32_be_decode, METH_FASTCALL, _codecs_utf_32_be_decode__doc__},
+    {"utf_32_be_decode", (PyCFunction)(void(*)(void))_codecs_utf_32_be_decode, METH_FASTCALL, _codecs_utf_32_be_decode__doc__},
 
 static PyObject *
 _codecs_utf_32_be_decode_impl(PyObject *module, Py_buffer *data,
@@ -563,7 +563,7 @@ PyDoc_STRVAR(_codecs_utf_32_ex_decode__doc__,
 "\n");
 
 #define _CODECS_UTF_32_EX_DECODE_METHODDEF    \
-    {"utf_32_ex_decode", (PyCFunction)_codecs_utf_32_ex_decode, METH_FASTCALL, _codecs_utf_32_ex_decode__doc__},
+    {"utf_32_ex_decode", (PyCFunction)(void(*)(void))_codecs_utf_32_ex_decode, METH_FASTCALL, _codecs_utf_32_ex_decode__doc__},
 
 static PyObject *
 _codecs_utf_32_ex_decode_impl(PyObject *module, Py_buffer *data,
@@ -599,7 +599,7 @@ PyDoc_STRVAR(_codecs_unicode_escape_decode__doc__,
 "\n");
 
 #define _CODECS_UNICODE_ESCAPE_DECODE_METHODDEF    \
-    {"unicode_escape_decode", (PyCFunction)_codecs_unicode_escape_decode, METH_FASTCALL, _codecs_unicode_escape_decode__doc__},
+    {"unicode_escape_decode", (PyCFunction)(void(*)(void))_codecs_unicode_escape_decode, METH_FASTCALL, _codecs_unicode_escape_decode__doc__},
 
 static PyObject *
 _codecs_unicode_escape_decode_impl(PyObject *module, Py_buffer *data,
@@ -633,7 +633,7 @@ PyDoc_STRVAR(_codecs_raw_unicode_escape_decode__doc__,
 "\n");
 
 #define _CODECS_RAW_UNICODE_ESCAPE_DECODE_METHODDEF    \
-    {"raw_unicode_escape_decode", (PyCFunction)_codecs_raw_unicode_escape_decode, METH_FASTCALL, _codecs_raw_unicode_escape_decode__doc__},
+    {"raw_unicode_escape_decode", (PyCFunction)(void(*)(void))_codecs_raw_unicode_escape_decode, METH_FASTCALL, _codecs_raw_unicode_escape_decode__doc__},
 
 static PyObject *
 _codecs_raw_unicode_escape_decode_impl(PyObject *module, Py_buffer *data,
@@ -667,7 +667,7 @@ PyDoc_STRVAR(_codecs_latin_1_decode__doc__,
 "\n");
 
 #define _CODECS_LATIN_1_DECODE_METHODDEF    \
-    {"latin_1_decode", (PyCFunction)_codecs_latin_1_decode, METH_FASTCALL, _codecs_latin_1_decode__doc__},
+    {"latin_1_decode", (PyCFunction)(void(*)(void))_codecs_latin_1_decode, METH_FASTCALL, _codecs_latin_1_decode__doc__},
 
 static PyObject *
 _codecs_latin_1_decode_impl(PyObject *module, Py_buffer *data,
@@ -701,7 +701,7 @@ PyDoc_STRVAR(_codecs_ascii_decode__doc__,
 "\n");
 
 #define _CODECS_ASCII_DECODE_METHODDEF    \
-    {"ascii_decode", (PyCFunction)_codecs_ascii_decode, METH_FASTCALL, _codecs_ascii_decode__doc__},
+    {"ascii_decode", (PyCFunction)(void(*)(void))_codecs_ascii_decode, METH_FASTCALL, _codecs_ascii_decode__doc__},
 
 static PyObject *
 _codecs_ascii_decode_impl(PyObject *module, Py_buffer *data,
@@ -735,7 +735,7 @@ PyDoc_STRVAR(_codecs_charmap_decode__doc__,
 "\n");
 
 #define _CODECS_CHARMAP_DECODE_METHODDEF    \
-    {"charmap_decode", (PyCFunction)_codecs_charmap_decode, METH_FASTCALL, _codecs_charmap_decode__doc__},
+    {"charmap_decode", (PyCFunction)(void(*)(void))_codecs_charmap_decode, METH_FASTCALL, _codecs_charmap_decode__doc__},
 
 static PyObject *
 _codecs_charmap_decode_impl(PyObject *module, Py_buffer *data,
@@ -772,7 +772,7 @@ PyDoc_STRVAR(_codecs_mbcs_decode__doc__,
 "\n");
 
 #define _CODECS_MBCS_DECODE_METHODDEF    \
-    {"mbcs_decode", (PyCFunction)_codecs_mbcs_decode, METH_FASTCALL, _codecs_mbcs_decode__doc__},
+    {"mbcs_decode", (PyCFunction)(void(*)(void))_codecs_mbcs_decode, METH_FASTCALL, _codecs_mbcs_decode__doc__},
 
 static PyObject *
 _codecs_mbcs_decode_impl(PyObject *module, Py_buffer *data,
@@ -811,7 +811,7 @@ PyDoc_STRVAR(_codecs_oem_decode__doc__,
 "\n");
 
 #define _CODECS_OEM_DECODE_METHODDEF    \
-    {"oem_decode", (PyCFunction)_codecs_oem_decode, METH_FASTCALL, _codecs_oem_decode__doc__},
+    {"oem_decode", (PyCFunction)(void(*)(void))_codecs_oem_decode, METH_FASTCALL, _codecs_oem_decode__doc__},
 
 static PyObject *
 _codecs_oem_decode_impl(PyObject *module, Py_buffer *data,
@@ -850,7 +850,7 @@ PyDoc_STRVAR(_codecs_code_page_decode__doc__,
 "\n");
 
 #define _CODECS_CODE_PAGE_DECODE_METHODDEF    \
-    {"code_page_decode", (PyCFunction)_codecs_code_page_decode, METH_FASTCALL, _codecs_code_page_decode__doc__},
+    {"code_page_decode", (PyCFunction)(void(*)(void))_codecs_code_page_decode, METH_FASTCALL, _codecs_code_page_decode__doc__},
 
 static PyObject *
 _codecs_code_page_decode_impl(PyObject *module, int codepage,
@@ -888,7 +888,7 @@ PyDoc_STRVAR(_codecs_readbuffer_encode__doc__,
 "\n");
 
 #define _CODECS_READBUFFER_ENCODE_METHODDEF    \
-    {"readbuffer_encode", (PyCFunction)_codecs_readbuffer_encode, METH_FASTCALL, _codecs_readbuffer_encode__doc__},
+    {"readbuffer_encode", (PyCFunction)(void(*)(void))_codecs_readbuffer_encode, METH_FASTCALL, _codecs_readbuffer_encode__doc__},
 
 static PyObject *
 _codecs_readbuffer_encode_impl(PyObject *module, Py_buffer *data,
@@ -922,7 +922,7 @@ PyDoc_STRVAR(_codecs_unicode_internal_encode__doc__,
 "\n");
 
 #define _CODECS_UNICODE_INTERNAL_ENCODE_METHODDEF    \
-    {"unicode_internal_encode", (PyCFunction)_codecs_unicode_internal_encode, METH_FASTCALL, _codecs_unicode_internal_encode__doc__},
+    {"unicode_internal_encode", (PyCFunction)(void(*)(void))_codecs_unicode_internal_encode, METH_FASTCALL, _codecs_unicode_internal_encode__doc__},
 
 static PyObject *
 _codecs_unicode_internal_encode_impl(PyObject *module, PyObject *obj,
@@ -951,7 +951,7 @@ PyDoc_STRVAR(_codecs_utf_7_encode__doc__,
 "\n");
 
 #define _CODECS_UTF_7_ENCODE_METHODDEF    \
-    {"utf_7_encode", (PyCFunction)_codecs_utf_7_encode, METH_FASTCALL, _codecs_utf_7_encode__doc__},
+    {"utf_7_encode", (PyCFunction)(void(*)(void))_codecs_utf_7_encode, METH_FASTCALL, _codecs_utf_7_encode__doc__},
 
 static PyObject *
 _codecs_utf_7_encode_impl(PyObject *module, PyObject *str,
@@ -980,7 +980,7 @@ PyDoc_STRVAR(_codecs_utf_8_encode__doc__,
 "\n");
 
 #define _CODECS_UTF_8_ENCODE_METHODDEF    \
-    {"utf_8_encode", (PyCFunction)_codecs_utf_8_encode, METH_FASTCALL, _codecs_utf_8_encode__doc__},
+    {"utf_8_encode", (PyCFunction)(void(*)(void))_codecs_utf_8_encode, METH_FASTCALL, _codecs_utf_8_encode__doc__},
 
 static PyObject *
 _codecs_utf_8_encode_impl(PyObject *module, PyObject *str,
@@ -1009,7 +1009,7 @@ PyDoc_STRVAR(_codecs_utf_16_encode__doc__,
 "\n");
 
 #define _CODECS_UTF_16_ENCODE_METHODDEF    \
-    {"utf_16_encode", (PyCFunction)_codecs_utf_16_encode, METH_FASTCALL, _codecs_utf_16_encode__doc__},
+    {"utf_16_encode", (PyCFunction)(void(*)(void))_codecs_utf_16_encode, METH_FASTCALL, _codecs_utf_16_encode__doc__},
 
 static PyObject *
 _codecs_utf_16_encode_impl(PyObject *module, PyObject *str,
@@ -1039,7 +1039,7 @@ PyDoc_STRVAR(_codecs_utf_16_le_encode__doc__,
 "\n");
 
 #define _CODECS_UTF_16_LE_ENCODE_METHODDEF    \
-    {"utf_16_le_encode", (PyCFunction)_codecs_utf_16_le_encode, METH_FASTCALL, _codecs_utf_16_le_encode__doc__},
+    {"utf_16_le_encode", (PyCFunction)(void(*)(void))_codecs_utf_16_le_encode, METH_FASTCALL, _codecs_utf_16_le_encode__doc__},
 
 static PyObject *
 _codecs_utf_16_le_encode_impl(PyObject *module, PyObject *str,
@@ -1068,7 +1068,7 @@ PyDoc_STRVAR(_codecs_utf_16_be_encode__doc__,
 "\n");
 
 #define _CODECS_UTF_16_BE_ENCODE_METHODDEF    \
-    {"utf_16_be_encode", (PyCFunction)_codecs_utf_16_be_encode, METH_FASTCALL, _codecs_utf_16_be_encode__doc__},
+    {"utf_16_be_encode", (PyCFunction)(void(*)(void))_codecs_utf_16_be_encode, METH_FASTCALL, _codecs_utf_16_be_encode__doc__},
 
 static PyObject *
 _codecs_utf_16_be_encode_impl(PyObject *module, PyObject *str,
@@ -1097,7 +1097,7 @@ PyDoc_STRVAR(_codecs_utf_32_encode__doc__,
 "\n");
 
 #define _CODECS_UTF_32_ENCODE_METHODDEF    \
-    {"utf_32_encode", (PyCFunction)_codecs_utf_32_encode, METH_FASTCALL, _codecs_utf_32_encode__doc__},
+    {"utf_32_encode", (PyCFunction)(void(*)(void))_codecs_utf_32_encode, METH_FASTCALL, _codecs_utf_32_encode__doc__},
 
 static PyObject *
 _codecs_utf_32_encode_impl(PyObject *module, PyObject *str,
@@ -1127,7 +1127,7 @@ PyDoc_STRVAR(_codecs_utf_32_le_encode__doc__,
 "\n");
 
 #define _CODECS_UTF_32_LE_ENCODE_METHODDEF    \
-    {"utf_32_le_encode", (PyCFunction)_codecs_utf_32_le_encode, METH_FASTCALL, _codecs_utf_32_le_encode__doc__},
+    {"utf_32_le_encode", (PyCFunction)(void(*)(void))_codecs_utf_32_le_encode, METH_FASTCALL, _codecs_utf_32_le_encode__doc__},
 
 static PyObject *
 _codecs_utf_32_le_encode_impl(PyObject *module, PyObject *str,
@@ -1156,7 +1156,7 @@ PyDoc_STRVAR(_codecs_utf_32_be_encode__doc__,
 "\n");
 
 #define _CODECS_UTF_32_BE_ENCODE_METHODDEF    \
-    {"utf_32_be_encode", (PyCFunction)_codecs_utf_32_be_encode, METH_FASTCALL, _codecs_utf_32_be_encode__doc__},
+    {"utf_32_be_encode", (PyCFunction)(void(*)(void))_codecs_utf_32_be_encode, METH_FASTCALL, _codecs_utf_32_be_encode__doc__},
 
 static PyObject *
 _codecs_utf_32_be_encode_impl(PyObject *module, PyObject *str,
@@ -1185,7 +1185,7 @@ PyDoc_STRVAR(_codecs_unicode_escape_encode__doc__,
 "\n");
 
 #define _CODECS_UNICODE_ESCAPE_ENCODE_METHODDEF    \
-    {"unicode_escape_encode", (PyCFunction)_codecs_unicode_escape_encode, METH_FASTCALL, _codecs_unicode_escape_encode__doc__},
+    {"unicode_escape_encode", (PyCFunction)(void(*)(void))_codecs_unicode_escape_encode, METH_FASTCALL, _codecs_unicode_escape_encode__doc__},
 
 static PyObject *
 _codecs_unicode_escape_encode_impl(PyObject *module, PyObject *str,
@@ -1214,7 +1214,7 @@ PyDoc_STRVAR(_codecs_raw_unicode_escape_encode__doc__,
 "\n");
 
 #define _CODECS_RAW_UNICODE_ESCAPE_ENCODE_METHODDEF    \
-    {"raw_unicode_escape_encode", (PyCFunction)_codecs_raw_unicode_escape_encode, METH_FASTCALL, _codecs_raw_unicode_escape_encode__doc__},
+    {"raw_unicode_escape_encode", (PyCFunction)(void(*)(void))_codecs_raw_unicode_escape_encode, METH_FASTCALL, _codecs_raw_unicode_escape_encode__doc__},
 
 static PyObject *
 _codecs_raw_unicode_escape_encode_impl(PyObject *module, PyObject *str,
@@ -1243,7 +1243,7 @@ PyDoc_STRVAR(_codecs_latin_1_encode__doc__,
 "\n");
 
 #define _CODECS_LATIN_1_ENCODE_METHODDEF    \
-    {"latin_1_encode", (PyCFunction)_codecs_latin_1_encode, METH_FASTCALL, _codecs_latin_1_encode__doc__},
+    {"latin_1_encode", (PyCFunction)(void(*)(void))_codecs_latin_1_encode, METH_FASTCALL, _codecs_latin_1_encode__doc__},
 
 static PyObject *
 _codecs_latin_1_encode_impl(PyObject *module, PyObject *str,
@@ -1272,7 +1272,7 @@ PyDoc_STRVAR(_codecs_ascii_encode__doc__,
 "\n");
 
 #define _CODECS_ASCII_ENCODE_METHODDEF    \
-    {"ascii_encode", (PyCFunction)_codecs_ascii_encode, METH_FASTCALL, _codecs_ascii_encode__doc__},
+    {"ascii_encode", (PyCFunction)(void(*)(void))_codecs_ascii_encode, METH_FASTCALL, _codecs_ascii_encode__doc__},
 
 static PyObject *
 _codecs_ascii_encode_impl(PyObject *module, PyObject *str,
@@ -1301,7 +1301,7 @@ PyDoc_STRVAR(_codecs_charmap_encode__doc__,
 "\n");
 
 #define _CODECS_CHARMAP_ENCODE_METHODDEF    \
-    {"charmap_encode", (PyCFunction)_codecs_charmap_encode, METH_FASTCALL, _codecs_charmap_encode__doc__},
+    {"charmap_encode", (PyCFunction)(void(*)(void))_codecs_charmap_encode, METH_FASTCALL, _codecs_charmap_encode__doc__},
 
 static PyObject *
 _codecs_charmap_encode_impl(PyObject *module, PyObject *str,
@@ -1359,7 +1359,7 @@ PyDoc_STRVAR(_codecs_mbcs_encode__doc__,
 "\n");
 
 #define _CODECS_MBCS_ENCODE_METHODDEF    \
-    {"mbcs_encode", (PyCFunction)_codecs_mbcs_encode, METH_FASTCALL, _codecs_mbcs_encode__doc__},
+    {"mbcs_encode", (PyCFunction)(void(*)(void))_codecs_mbcs_encode, METH_FASTCALL, _codecs_mbcs_encode__doc__},
 
 static PyObject *
 _codecs_mbcs_encode_impl(PyObject *module, PyObject *str, const char *errors);
@@ -1391,7 +1391,7 @@ PyDoc_STRVAR(_codecs_oem_encode__doc__,
 "\n");
 
 #define _CODECS_OEM_ENCODE_METHODDEF    \
-    {"oem_encode", (PyCFunction)_codecs_oem_encode, METH_FASTCALL, _codecs_oem_encode__doc__},
+    {"oem_encode", (PyCFunction)(void(*)(void))_codecs_oem_encode, METH_FASTCALL, _codecs_oem_encode__doc__},
 
 static PyObject *
 _codecs_oem_encode_impl(PyObject *module, PyObject *str, const char *errors);
@@ -1423,7 +1423,7 @@ PyDoc_STRVAR(_codecs_code_page_encode__doc__,
 "\n");
 
 #define _CODECS_CODE_PAGE_ENCODE_METHODDEF    \
-    {"code_page_encode", (PyCFunction)_codecs_code_page_encode, METH_FASTCALL, _codecs_code_page_encode__doc__},
+    {"code_page_encode", (PyCFunction)(void(*)(void))_codecs_code_page_encode, METH_FASTCALL, _codecs_code_page_encode__doc__},
 
 static PyObject *
 _codecs_code_page_encode_impl(PyObject *module, int code_page, PyObject *str,
@@ -1460,7 +1460,7 @@ PyDoc_STRVAR(_codecs_register_error__doc__,
 "error and must return a (replacement, new position) tuple.");
 
 #define _CODECS_REGISTER_ERROR_METHODDEF    \
-    {"register_error", (PyCFunction)_codecs_register_error, METH_FASTCALL, _codecs_register_error__doc__},
+    {"register_error", (PyCFunction)(void(*)(void))_codecs_register_error, METH_FASTCALL, _codecs_register_error__doc__},
 
 static PyObject *
 _codecs_register_error_impl(PyObject *module, const char *errors,
@@ -1536,4 +1536,4 @@ exit:
 #ifndef _CODECS_CODE_PAGE_ENCODE_METHODDEF
     #define _CODECS_CODE_PAGE_ENCODE_METHODDEF
 #endif /* !defined(_CODECS_CODE_PAGE_ENCODE_METHODDEF) */
-/*[clinic end generated code: output=06fa0d6803103c62 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=d29fe7c0cb206812 input=a9049054013a1b77]*/
diff --git a/Modules/clinic/_cryptmodule.c.h b/Modules/clinic/_cryptmodule.c.h
index 71eb53c..baa31e2 100644
--- a/Modules/clinic/_cryptmodule.c.h
+++ b/Modules/clinic/_cryptmodule.c.h
@@ -14,7 +14,7 @@ PyDoc_STRVAR(crypt_crypt__doc__,
 "results for a given *word*.");
 
 #define CRYPT_CRYPT_METHODDEF    \
-    {"crypt", (PyCFunction)crypt_crypt, METH_FASTCALL, crypt_crypt__doc__},
+    {"crypt", (PyCFunction)(void(*)(void))crypt_crypt, METH_FASTCALL, crypt_crypt__doc__},
 
 static PyObject *
 crypt_crypt_impl(PyObject *module, const char *word, const char *salt);
@@ -35,4 +35,4 @@ crypt_crypt(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=8d803e53466b1cd3 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=79001dbfdd623ff9 input=a9049054013a1b77]*/
diff --git a/Modules/clinic/_curses_panel.c.h b/Modules/clinic/_curses_panel.c.h
index e11c68d..4f3f593 100644
--- a/Modules/clinic/_curses_panel.c.h
+++ b/Modules/clinic/_curses_panel.c.h
@@ -137,7 +137,7 @@ PyDoc_STRVAR(_curses_panel_panel_move__doc__,
 "Move the panel to the screen coordinates (y, x).");
 
 #define _CURSES_PANEL_PANEL_MOVE_METHODDEF    \
-    {"move", (PyCFunction)_curses_panel_panel_move, METH_FASTCALL, _curses_panel_panel_move__doc__},
+    {"move", (PyCFunction)(void(*)(void))_curses_panel_panel_move, METH_FASTCALL, _curses_panel_panel_move__doc__},
 
 static PyObject *
 _curses_panel_panel_move_impl(PyCursesPanelObject *self, int y, int x);
@@ -314,4 +314,4 @@ _curses_panel_update_panels(PyObject *module, PyObject *Py_UNUSED(ignored))
 {
     return _curses_panel_update_panels_impl(module);
 }
-/*[clinic end generated code: output=96f627ca0b08b96d input=a9049054013a1b77]*/
+/*[clinic end generated code: output=66e49cb9726a638f input=a9049054013a1b77]*/
diff --git a/Modules/clinic/_cursesmodule.c.h b/Modules/clinic/_cursesmodule.c.h
index b32797f..ac921d5 100644
--- a/Modules/clinic/_cursesmodule.c.h
+++ b/Modules/clinic/_cursesmodule.c.h
@@ -233,7 +233,7 @@ PyDoc_STRVAR(_curses_window_bkgd__doc__,
 "    Background attributes.");
 
 #define _CURSES_WINDOW_BKGD_METHODDEF    \
-    {"bkgd", (PyCFunction)_curses_window_bkgd, METH_FASTCALL, _curses_window_bkgd__doc__},
+    {"bkgd", (PyCFunction)(void(*)(void))_curses_window_bkgd, METH_FASTCALL, _curses_window_bkgd__doc__},
 
 static PyObject *
 _curses_window_bkgd_impl(PyCursesWindowObject *self, PyObject *ch, long attr);
@@ -348,7 +348,7 @@ PyDoc_STRVAR(_curses_window_bkgdset__doc__,
 "    Background attributes.");
 
 #define _CURSES_WINDOW_BKGDSET_METHODDEF    \
-    {"bkgdset", (PyCFunction)_curses_window_bkgdset, METH_FASTCALL, _curses_window_bkgdset__doc__},
+    {"bkgdset", (PyCFunction)(void(*)(void))_curses_window_bkgdset, METH_FASTCALL, _curses_window_bkgdset__doc__},
 
 static PyObject *
 _curses_window_bkgdset_impl(PyCursesWindowObject *self, PyObject *ch,
@@ -403,7 +403,7 @@ PyDoc_STRVAR(_curses_window_border__doc__,
 "used for that parameter.");
 
 #define _CURSES_WINDOW_BORDER_METHODDEF    \
-    {"border", (PyCFunction)_curses_window_border, METH_FASTCALL, _curses_window_border__doc__},
+    {"border", (PyCFunction)(void(*)(void))_curses_window_border, METH_FASTCALL, _curses_window_border__doc__},
 
 static PyObject *
 _curses_window_border_impl(PyCursesWindowObject *self, PyObject *ls,
@@ -592,7 +592,7 @@ PyDoc_STRVAR(_curses_window_echochar__doc__,
 "    Attributes for the character.");
 
 #define _CURSES_WINDOW_ECHOCHAR_METHODDEF    \
-    {"echochar", (PyCFunction)_curses_window_echochar, METH_FASTCALL, _curses_window_echochar__doc__},
+    {"echochar", (PyCFunction)(void(*)(void))_curses_window_echochar, METH_FASTCALL, _curses_window_echochar__doc__},
 
 static PyObject *
 _curses_window_echochar_impl(PyCursesWindowObject *self, PyObject *ch,
@@ -629,7 +629,7 @@ PyDoc_STRVAR(_curses_window_enclose__doc__,
 "    X-coordinate.");
 
 #define _CURSES_WINDOW_ENCLOSE_METHODDEF    \
-    {"enclose", (PyCFunction)_curses_window_enclose, METH_FASTCALL, _curses_window_enclose__doc__},
+    {"enclose", (PyCFunction)(void(*)(void))_curses_window_enclose, METH_FASTCALL, _curses_window_enclose__doc__},
 
 static long
 _curses_window_enclose_impl(PyCursesWindowObject *self, int y, int x);
@@ -1426,7 +1426,7 @@ PyDoc_STRVAR(_curses_window_redrawln__doc__,
 "They should be completely redrawn on the next refresh() call.");
 
 #define _CURSES_WINDOW_REDRAWLN_METHODDEF    \
-    {"redrawln", (PyCFunction)_curses_window_redrawln, METH_FASTCALL, _curses_window_redrawln__doc__},
+    {"redrawln", (PyCFunction)(void(*)(void))_curses_window_redrawln, METH_FASTCALL, _curses_window_redrawln__doc__},
 
 static PyObject *
 _curses_window_redrawln_impl(PyCursesWindowObject *self, int beg, int num);
@@ -1517,7 +1517,7 @@ PyDoc_STRVAR(_curses_window_setscrreg__doc__,
 "All scrolling actions will take place in this region.");
 
 #define _CURSES_WINDOW_SETSCRREG_METHODDEF    \
-    {"setscrreg", (PyCFunction)_curses_window_setscrreg, METH_FASTCALL, _curses_window_setscrreg__doc__},
+    {"setscrreg", (PyCFunction)(void(*)(void))_curses_window_setscrreg, METH_FASTCALL, _curses_window_setscrreg__doc__},
 
 static PyObject *
 _curses_window_setscrreg_impl(PyCursesWindowObject *self, int top,
@@ -1843,7 +1843,7 @@ PyDoc_STRVAR(_curses_cbreak__doc__,
 "Calling first raw() then cbreak() leaves the terminal in cbreak mode.");
 
 #define _CURSES_CBREAK_METHODDEF    \
-    {"cbreak", (PyCFunction)_curses_cbreak, METH_FASTCALL, _curses_cbreak__doc__},
+    {"cbreak", (PyCFunction)(void(*)(void))_curses_cbreak, METH_FASTCALL, _curses_cbreak__doc__},
 
 static PyObject *
 _curses_cbreak_impl(PyObject *module, int flag);
@@ -2069,7 +2069,7 @@ PyDoc_STRVAR(_curses_echo__doc__,
 "In echo mode, each character input is echoed to the screen as it is entered.");
 
 #define _CURSES_ECHO_METHODDEF    \
-    {"echo", (PyCFunction)_curses_echo, METH_FASTCALL, _curses_echo__doc__},
+    {"echo", (PyCFunction)(void(*)(void))_curses_echo, METH_FASTCALL, _curses_echo__doc__},
 
 static PyObject *
 _curses_echo_impl(PyObject *module, int flag);
@@ -2227,7 +2227,7 @@ PyDoc_STRVAR(_curses_ungetmouse__doc__,
 "The following getmouse() will return the given state data.");
 
 #define _CURSES_UNGETMOUSE_METHODDEF    \
-    {"ungetmouse", (PyCFunction)_curses_ungetmouse, METH_FASTCALL, _curses_ungetmouse__doc__},
+    {"ungetmouse", (PyCFunction)(void(*)(void))_curses_ungetmouse, METH_FASTCALL, _curses_ungetmouse__doc__},
 
 static PyObject *
 _curses_ungetmouse_impl(PyObject *module, short id, int x, int y, int z,
@@ -2407,7 +2407,7 @@ PyDoc_STRVAR(_curses_init_color__doc__,
 "most terminals; it is active only if can_change_color() returns 1.");
 
 #define _CURSES_INIT_COLOR_METHODDEF    \
-    {"init_color", (PyCFunction)_curses_init_color, METH_FASTCALL, _curses_init_color__doc__},
+    {"init_color", (PyCFunction)(void(*)(void))_curses_init_color, METH_FASTCALL, _curses_init_color__doc__},
 
 static PyObject *
 _curses_init_color_impl(PyObject *module, short color_number, short r,
@@ -2449,7 +2449,7 @@ PyDoc_STRVAR(_curses_init_pair__doc__,
 "all occurrences of that color-pair are changed to the new definition.");
 
 #define _CURSES_INIT_PAIR_METHODDEF    \
-    {"init_pair", (PyCFunction)_curses_init_pair, METH_FASTCALL, _curses_init_pair__doc__},
+    {"init_pair", (PyCFunction)(void(*)(void))_curses_init_pair, METH_FASTCALL, _curses_init_pair__doc__},
 
 static PyObject *
 _curses_init_pair_impl(PyObject *module, short pair_number, short fg,
@@ -2507,7 +2507,7 @@ PyDoc_STRVAR(_curses_setupterm__doc__,
 "    If not supplied, the file descriptor for sys.stdout will be used.");
 
 #define _CURSES_SETUPTERM_METHODDEF    \
-    {"setupterm", (PyCFunction)_curses_setupterm, METH_FASTCALL|METH_KEYWORDS, _curses_setupterm__doc__},
+    {"setupterm", (PyCFunction)(void(*)(void))_curses_setupterm, METH_FASTCALL|METH_KEYWORDS, _curses_setupterm__doc__},
 
 static PyObject *
 _curses_setupterm_impl(PyObject *module, const char *term, int fd);
@@ -2589,7 +2589,7 @@ PyDoc_STRVAR(_curses_is_term_resized__doc__,
 "    Width.");
 
 #define _CURSES_IS_TERM_RESIZED_METHODDEF    \
-    {"is_term_resized", (PyCFunction)_curses_is_term_resized, METH_FASTCALL, _curses_is_term_resized__doc__},
+    {"is_term_resized", (PyCFunction)(void(*)(void))_curses_is_term_resized, METH_FASTCALL, _curses_is_term_resized__doc__},
 
 static PyObject *
 _curses_is_term_resized_impl(PyObject *module, int nlines, int ncols);
@@ -2828,7 +2828,7 @@ PyDoc_STRVAR(_curses_newpad__doc__,
 "    Width.");
 
 #define _CURSES_NEWPAD_METHODDEF    \
-    {"newpad", (PyCFunction)_curses_newpad, METH_FASTCALL, _curses_newpad__doc__},
+    {"newpad", (PyCFunction)(void(*)(void))_curses_newpad, METH_FASTCALL, _curses_newpad__doc__},
 
 static PyObject *
 _curses_newpad_impl(PyObject *module, int nlines, int ncols);
@@ -2918,7 +2918,7 @@ PyDoc_STRVAR(_curses_nl__doc__,
 "newline into return and line-feed on output.  Newline mode is initially on.");
 
 #define _CURSES_NL_METHODDEF    \
-    {"nl", (PyCFunction)_curses_nl, METH_FASTCALL, _curses_nl__doc__},
+    {"nl", (PyCFunction)(void(*)(void))_curses_nl, METH_FASTCALL, _curses_nl__doc__},
 
 static PyObject *
 _curses_nl_impl(PyObject *module, int flag);
@@ -3142,7 +3142,7 @@ PyDoc_STRVAR(_curses_qiflush__doc__,
 "will be flushed when the INTR, QUIT and SUSP characters are read.");
 
 #define _CURSES_QIFLUSH_METHODDEF    \
-    {"qiflush", (PyCFunction)_curses_qiflush, METH_FASTCALL, _curses_qiflush__doc__},
+    {"qiflush", (PyCFunction)(void(*)(void))_curses_qiflush, METH_FASTCALL, _curses_qiflush__doc__},
 
 static PyObject *
 _curses_qiflush_impl(PyObject *module, int flag);
@@ -3208,7 +3208,7 @@ PyDoc_STRVAR(_curses_raw__doc__,
 "curses input functions one by one.");
 
 #define _CURSES_RAW_METHODDEF    \
-    {"raw", (PyCFunction)_curses_raw, METH_FASTCALL, _curses_raw__doc__},
+    {"raw", (PyCFunction)(void(*)(void))_curses_raw, METH_FASTCALL, _curses_raw__doc__},
 
 static PyObject *
 _curses_raw_impl(PyObject *module, int flag);
@@ -3300,7 +3300,7 @@ PyDoc_STRVAR(_curses_resizeterm__doc__,
 "window dimensions (in particular the SIGWINCH handler).");
 
 #define _CURSES_RESIZETERM_METHODDEF    \
-    {"resizeterm", (PyCFunction)_curses_resizeterm, METH_FASTCALL, _curses_resizeterm__doc__},
+    {"resizeterm", (PyCFunction)(void(*)(void))_curses_resizeterm, METH_FASTCALL, _curses_resizeterm__doc__},
 
 static PyObject *
 _curses_resizeterm_impl(PyObject *module, int nlines, int ncols);
@@ -3344,7 +3344,7 @@ PyDoc_STRVAR(_curses_resize_term__doc__,
 "without additional interaction with the application.");
 
 #define _CURSES_RESIZE_TERM_METHODDEF    \
-    {"resize_term", (PyCFunction)_curses_resize_term, METH_FASTCALL, _curses_resize_term__doc__},
+    {"resize_term", (PyCFunction)(void(*)(void))_curses_resize_term, METH_FASTCALL, _curses_resize_term__doc__},
 
 static PyObject *
 _curses_resize_term_impl(PyObject *module, int nlines, int ncols);
@@ -3402,7 +3402,7 @@ PyDoc_STRVAR(_curses_setsyx__doc__,
 "If y and x are both -1, then leaveok is set.");
 
 #define _CURSES_SETSYX_METHODDEF    \
-    {"setsyx", (PyCFunction)_curses_setsyx, METH_FASTCALL, _curses_setsyx__doc__},
+    {"setsyx", (PyCFunction)(void(*)(void))_curses_setsyx, METH_FASTCALL, _curses_setsyx__doc__},
 
 static PyObject *
 _curses_setsyx_impl(PyObject *module, int y, int x);
@@ -3597,7 +3597,7 @@ PyDoc_STRVAR(_curses_tparm__doc__,
 "    Parameterized byte string obtained from the terminfo database.");
 
 #define _CURSES_TPARM_METHODDEF    \
-    {"tparm", (PyCFunction)_curses_tparm, METH_FASTCALL, _curses_tparm__doc__},
+    {"tparm", (PyCFunction)(void(*)(void))_curses_tparm, METH_FASTCALL, _curses_tparm__doc__},
 
 static PyObject *
 _curses_tparm_impl(PyObject *module, const char *str, int i1, int i2, int i3,
@@ -3838,4 +3838,4 @@ _curses_use_default_colors(PyObject *module, PyObject *Py_UNUSED(ignored))
 #ifndef _CURSES_USE_DEFAULT_COLORS_METHODDEF
     #define _CURSES_USE_DEFAULT_COLORS_METHODDEF
 #endif /* !defined(_CURSES_USE_DEFAULT_COLORS_METHODDEF) */
-/*[clinic end generated code: output=763ffe3abc3a97c7 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=177ad1d0b5586aaa input=a9049054013a1b77]*/
diff --git a/Modules/clinic/_datetimemodule.c.h b/Modules/clinic/_datetimemodule.c.h
index 0f917dd..36b4fca 100644
--- a/Modules/clinic/_datetimemodule.c.h
+++ b/Modules/clinic/_datetimemodule.c.h
@@ -26,7 +26,7 @@ PyDoc_STRVAR(datetime_datetime_now__doc__,
 "If no tz is specified, uses local timezone.");
 
 #define DATETIME_DATETIME_NOW_METHODDEF    \
-    {"now", (PyCFunction)datetime_datetime_now, METH_FASTCALL|METH_KEYWORDS|METH_CLASS, datetime_datetime_now__doc__},
+    {"now", (PyCFunction)(void(*)(void))datetime_datetime_now, METH_FASTCALL|METH_KEYWORDS|METH_CLASS, datetime_datetime_now__doc__},
 
 static PyObject *
 datetime_datetime_now_impl(PyTypeObject *type, PyObject *tz);
@@ -48,4 +48,4 @@ datetime_datetime_now(PyTypeObject *type, PyObject *const *args, Py_ssize_t narg
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=7fd14bd67749da23 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=b3d746843403a8ce input=a9049054013a1b77]*/
diff --git a/Modules/clinic/_dbmmodule.c.h b/Modules/clinic/_dbmmodule.c.h
index 574cc5e..c090862 100644
--- a/Modules/clinic/_dbmmodule.c.h
+++ b/Modules/clinic/_dbmmodule.c.h
@@ -45,7 +45,7 @@ PyDoc_STRVAR(_dbm_dbm_get__doc__,
 "Return the value for key if present, otherwise default.");
 
 #define _DBM_DBM_GET_METHODDEF    \
-    {"get", (PyCFunction)_dbm_dbm_get, METH_FASTCALL, _dbm_dbm_get__doc__},
+    {"get", (PyCFunction)(void(*)(void))_dbm_dbm_get, METH_FASTCALL, _dbm_dbm_get__doc__},
 
 static PyObject *
 _dbm_dbm_get_impl(dbmobject *self, const char *key,
@@ -78,7 +78,7 @@ PyDoc_STRVAR(_dbm_dbm_setdefault__doc__,
 "If key is not in the database, it is inserted with default as the value.");
 
 #define _DBM_DBM_SETDEFAULT_METHODDEF    \
-    {"setdefault", (PyCFunction)_dbm_dbm_setdefault, METH_FASTCALL, _dbm_dbm_setdefault__doc__},
+    {"setdefault", (PyCFunction)(void(*)(void))_dbm_dbm_setdefault, METH_FASTCALL, _dbm_dbm_setdefault__doc__},
 
 static PyObject *
 _dbm_dbm_setdefault_impl(dbmobject *self, const char *key,
@@ -118,7 +118,7 @@ PyDoc_STRVAR(dbmopen__doc__,
 "    (e.g. os.O_RDWR).");
 
 #define DBMOPEN_METHODDEF    \
-    {"open", (PyCFunction)dbmopen, METH_FASTCALL, dbmopen__doc__},
+    {"open", (PyCFunction)(void(*)(void))dbmopen, METH_FASTCALL, dbmopen__doc__},
 
 static PyObject *
 dbmopen_impl(PyObject *module, PyObject *filename, const char *flags,
@@ -141,4 +141,4 @@ dbmopen(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=1cba297bc8d7c2c2 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=e4585e78f5821b5b input=a9049054013a1b77]*/
diff --git a/Modules/clinic/_elementtree.c.h b/Modules/clinic/_elementtree.c.h
index 78b9be8..f7dc12e 100644
--- a/Modules/clinic/_elementtree.c.h
+++ b/Modules/clinic/_elementtree.c.h
@@ -154,7 +154,7 @@ PyDoc_STRVAR(_elementtree_Element_find__doc__,
 "\n");
 
 #define _ELEMENTTREE_ELEMENT_FIND_METHODDEF    \
-    {"find", (PyCFunction)_elementtree_Element_find, METH_FASTCALL|METH_KEYWORDS, _elementtree_Element_find__doc__},
+    {"find", (PyCFunction)(void(*)(void))_elementtree_Element_find, METH_FASTCALL|METH_KEYWORDS, _elementtree_Element_find__doc__},
 
 static PyObject *
 _elementtree_Element_find_impl(ElementObject *self, PyObject *path,
@@ -185,7 +185,7 @@ PyDoc_STRVAR(_elementtree_Element_findtext__doc__,
 "\n");
 
 #define _ELEMENTTREE_ELEMENT_FINDTEXT_METHODDEF    \
-    {"findtext", (PyCFunction)_elementtree_Element_findtext, METH_FASTCALL|METH_KEYWORDS, _elementtree_Element_findtext__doc__},
+    {"findtext", (PyCFunction)(void(*)(void))_elementtree_Element_findtext, METH_FASTCALL|METH_KEYWORDS, _elementtree_Element_findtext__doc__},
 
 static PyObject *
 _elementtree_Element_findtext_impl(ElementObject *self, PyObject *path,
@@ -218,7 +218,7 @@ PyDoc_STRVAR(_elementtree_Element_findall__doc__,
 "\n");
 
 #define _ELEMENTTREE_ELEMENT_FINDALL_METHODDEF    \
-    {"findall", (PyCFunction)_elementtree_Element_findall, METH_FASTCALL|METH_KEYWORDS, _elementtree_Element_findall__doc__},
+    {"findall", (PyCFunction)(void(*)(void))_elementtree_Element_findall, METH_FASTCALL|METH_KEYWORDS, _elementtree_Element_findall__doc__},
 
 static PyObject *
 _elementtree_Element_findall_impl(ElementObject *self, PyObject *path,
@@ -249,7 +249,7 @@ PyDoc_STRVAR(_elementtree_Element_iterfind__doc__,
 "\n");
 
 #define _ELEMENTTREE_ELEMENT_ITERFIND_METHODDEF    \
-    {"iterfind", (PyCFunction)_elementtree_Element_iterfind, METH_FASTCALL|METH_KEYWORDS, _elementtree_Element_iterfind__doc__},
+    {"iterfind", (PyCFunction)(void(*)(void))_elementtree_Element_iterfind, METH_FASTCALL|METH_KEYWORDS, _elementtree_Element_iterfind__doc__},
 
 static PyObject *
 _elementtree_Element_iterfind_impl(ElementObject *self, PyObject *path,
@@ -280,7 +280,7 @@ PyDoc_STRVAR(_elementtree_Element_get__doc__,
 "\n");
 
 #define _ELEMENTTREE_ELEMENT_GET_METHODDEF    \
-    {"get", (PyCFunction)_elementtree_Element_get, METH_FASTCALL|METH_KEYWORDS, _elementtree_Element_get__doc__},
+    {"get", (PyCFunction)(void(*)(void))_elementtree_Element_get, METH_FASTCALL|METH_KEYWORDS, _elementtree_Element_get__doc__},
 
 static PyObject *
 _elementtree_Element_get_impl(ElementObject *self, PyObject *key,
@@ -328,7 +328,7 @@ PyDoc_STRVAR(_elementtree_Element_iter__doc__,
 "\n");
 
 #define _ELEMENTTREE_ELEMENT_ITER_METHODDEF    \
-    {"iter", (PyCFunction)_elementtree_Element_iter, METH_FASTCALL|METH_KEYWORDS, _elementtree_Element_iter__doc__},
+    {"iter", (PyCFunction)(void(*)(void))_elementtree_Element_iter, METH_FASTCALL|METH_KEYWORDS, _elementtree_Element_iter__doc__},
 
 static PyObject *
 _elementtree_Element_iter_impl(ElementObject *self, PyObject *tag);
@@ -357,7 +357,7 @@ PyDoc_STRVAR(_elementtree_Element_getiterator__doc__,
 "\n");
 
 #define _ELEMENTTREE_ELEMENT_GETITERATOR_METHODDEF    \
-    {"getiterator", (PyCFunction)_elementtree_Element_getiterator, METH_FASTCALL|METH_KEYWORDS, _elementtree_Element_getiterator__doc__},
+    {"getiterator", (PyCFunction)(void(*)(void))_elementtree_Element_getiterator, METH_FASTCALL|METH_KEYWORDS, _elementtree_Element_getiterator__doc__},
 
 static PyObject *
 _elementtree_Element_getiterator_impl(ElementObject *self, PyObject *tag);
@@ -403,7 +403,7 @@ PyDoc_STRVAR(_elementtree_Element_insert__doc__,
 "\n");
 
 #define _ELEMENTTREE_ELEMENT_INSERT_METHODDEF    \
-    {"insert", (PyCFunction)_elementtree_Element_insert, METH_FASTCALL, _elementtree_Element_insert__doc__},
+    {"insert", (PyCFunction)(void(*)(void))_elementtree_Element_insert, METH_FASTCALL, _elementtree_Element_insert__doc__},
 
 static PyObject *
 _elementtree_Element_insert_impl(ElementObject *self, Py_ssize_t index,
@@ -466,7 +466,7 @@ PyDoc_STRVAR(_elementtree_Element_makeelement__doc__,
 "\n");
 
 #define _ELEMENTTREE_ELEMENT_MAKEELEMENT_METHODDEF    \
-    {"makeelement", (PyCFunction)_elementtree_Element_makeelement, METH_FASTCALL, _elementtree_Element_makeelement__doc__},
+    {"makeelement", (PyCFunction)(void(*)(void))_elementtree_Element_makeelement, METH_FASTCALL, _elementtree_Element_makeelement__doc__},
 
 static PyObject *
 _elementtree_Element_makeelement_impl(ElementObject *self, PyObject *tag,
@@ -522,7 +522,7 @@ PyDoc_STRVAR(_elementtree_Element_set__doc__,
 "\n");
 
 #define _ELEMENTTREE_ELEMENT_SET_METHODDEF    \
-    {"set", (PyCFunction)_elementtree_Element_set, METH_FASTCALL, _elementtree_Element_set__doc__},
+    {"set", (PyCFunction)(void(*)(void))_elementtree_Element_set, METH_FASTCALL, _elementtree_Element_set__doc__},
 
 static PyObject *
 _elementtree_Element_set_impl(ElementObject *self, PyObject *key,
@@ -607,7 +607,7 @@ PyDoc_STRVAR(_elementtree_TreeBuilder_start__doc__,
 "\n");
 
 #define _ELEMENTTREE_TREEBUILDER_START_METHODDEF    \
-    {"start", (PyCFunction)_elementtree_TreeBuilder_start, METH_FASTCALL, _elementtree_TreeBuilder_start__doc__},
+    {"start", (PyCFunction)(void(*)(void))_elementtree_TreeBuilder_start, METH_FASTCALL, _elementtree_TreeBuilder_start__doc__},
 
 static PyObject *
 _elementtree_TreeBuilder_start_impl(TreeBuilderObject *self, PyObject *tag,
@@ -693,7 +693,7 @@ PyDoc_STRVAR(_elementtree_XMLParser__setevents__doc__,
 "\n");
 
 #define _ELEMENTTREE_XMLPARSER__SETEVENTS_METHODDEF    \
-    {"_setevents", (PyCFunction)_elementtree_XMLParser__setevents, METH_FASTCALL, _elementtree_XMLParser__setevents__doc__},
+    {"_setevents", (PyCFunction)(void(*)(void))_elementtree_XMLParser__setevents, METH_FASTCALL, _elementtree_XMLParser__setevents__doc__},
 
 static PyObject *
 _elementtree_XMLParser__setevents_impl(XMLParserObject *self,
@@ -717,4 +717,4 @@ _elementtree_XMLParser__setevents(XMLParserObject *self, PyObject *const *args,
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=1bff22415aabb78b input=a9049054013a1b77]*/
+/*[clinic end generated code: output=f1efdb511a5b027b input=a9049054013a1b77]*/
diff --git a/Modules/clinic/_gdbmmodule.c.h b/Modules/clinic/_gdbmmodule.c.h
index 7bdc432..5edc440 100644
--- a/Modules/clinic/_gdbmmodule.c.h
+++ b/Modules/clinic/_gdbmmodule.c.h
@@ -9,7 +9,7 @@ PyDoc_STRVAR(_gdbm_gdbm_get__doc__,
 "Get the value for key, or default if not present.");
 
 #define _GDBM_GDBM_GET_METHODDEF    \
-    {"get", (PyCFunction)_gdbm_gdbm_get, METH_FASTCALL, _gdbm_gdbm_get__doc__},
+    {"get", (PyCFunction)(void(*)(void))_gdbm_gdbm_get, METH_FASTCALL, _gdbm_gdbm_get__doc__},
 
 static PyObject *
 _gdbm_gdbm_get_impl(dbmobject *self, PyObject *key, PyObject *default_value);
@@ -39,7 +39,7 @@ PyDoc_STRVAR(_gdbm_gdbm_setdefault__doc__,
 "Get value for key, or set it to default and return default if not present.");
 
 #define _GDBM_GDBM_SETDEFAULT_METHODDEF    \
-    {"setdefault", (PyCFunction)_gdbm_gdbm_setdefault, METH_FASTCALL, _gdbm_gdbm_setdefault__doc__},
+    {"setdefault", (PyCFunction)(void(*)(void))_gdbm_gdbm_setdefault, METH_FASTCALL, _gdbm_gdbm_setdefault__doc__},
 
 static PyObject *
 _gdbm_gdbm_setdefault_impl(dbmobject *self, PyObject *key,
@@ -231,7 +231,7 @@ PyDoc_STRVAR(dbmopen__doc__,
 "when the database has to be created.  It defaults to octal 0o666.");
 
 #define DBMOPEN_METHODDEF    \
-    {"open", (PyCFunction)dbmopen, METH_FASTCALL, dbmopen__doc__},
+    {"open", (PyCFunction)(void(*)(void))dbmopen, METH_FASTCALL, dbmopen__doc__},
 
 static PyObject *
 dbmopen_impl(PyObject *module, PyObject *filename, const char *flags,
@@ -254,4 +254,4 @@ dbmopen(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=dec05ff9c5aeaeae input=a9049054013a1b77]*/
+/*[clinic end generated code: output=5ca4361417bf96cb input=a9049054013a1b77]*/
diff --git a/Modules/clinic/_hashopenssl.c.h b/Modules/clinic/_hashopenssl.c.h
index 070f829..3dad45d 100644
--- a/Modules/clinic/_hashopenssl.c.h
+++ b/Modules/clinic/_hashopenssl.c.h
@@ -12,7 +12,7 @@ PyDoc_STRVAR(_hashlib_scrypt__doc__,
 "scrypt password-based key derivation function.");
 
 #define _HASHLIB_SCRYPT_METHODDEF    \
-    {"scrypt", (PyCFunction)_hashlib_scrypt, METH_FASTCALL|METH_KEYWORDS, _hashlib_scrypt__doc__},
+    {"scrypt", (PyCFunction)(void(*)(void))_hashlib_scrypt, METH_FASTCALL|METH_KEYWORDS, _hashlib_scrypt__doc__},
 
 static PyObject *
 _hashlib_scrypt_impl(PyObject *module, Py_buffer *password, Py_buffer *salt,
@@ -61,7 +61,7 @@ PyDoc_STRVAR(_hashlib_hmac_digest__doc__,
 "Single-shot HMAC.");
 
 #define _HASHLIB_HMAC_DIGEST_METHODDEF    \
-    {"hmac_digest", (PyCFunction)_hashlib_hmac_digest, METH_FASTCALL|METH_KEYWORDS, _hashlib_hmac_digest__doc__},
+    {"hmac_digest", (PyCFunction)(void(*)(void))_hashlib_hmac_digest, METH_FASTCALL|METH_KEYWORDS, _hashlib_hmac_digest__doc__},
 
 static PyObject *
 _hashlib_hmac_digest_impl(PyObject *module, Py_buffer *key, Py_buffer *msg,
@@ -99,4 +99,4 @@ exit:
 #ifndef _HASHLIB_SCRYPT_METHODDEF
     #define _HASHLIB_SCRYPT_METHODDEF
 #endif /* !defined(_HASHLIB_SCRYPT_METHODDEF) */
-/*[clinic end generated code: output=b129f1a6ec7b8503 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=acf668396f59f2b6 input=a9049054013a1b77]*/
diff --git a/Modules/clinic/_heapqmodule.c.h b/Modules/clinic/_heapqmodule.c.h
index 5e346df..0b5d0d7 100644
--- a/Modules/clinic/_heapqmodule.c.h
+++ b/Modules/clinic/_heapqmodule.c.h
@@ -9,7 +9,7 @@ PyDoc_STRVAR(_heapq_heappush__doc__,
 "Push item onto heap, maintaining the heap invariant.");
 
 #define _HEAPQ_HEAPPUSH_METHODDEF    \
-    {"heappush", (PyCFunction)_heapq_heappush, METH_FASTCALL, _heapq_heappush__doc__},
+    {"heappush", (PyCFunction)(void(*)(void))_heapq_heappush, METH_FASTCALL, _heapq_heappush__doc__},
 
 static PyObject *
 _heapq_heappush_impl(PyObject *module, PyObject *heap, PyObject *item);
@@ -56,7 +56,7 @@ PyDoc_STRVAR(_heapq_heapreplace__doc__,
 "        item = heapreplace(heap, item)");
 
 #define _HEAPQ_HEAPREPLACE_METHODDEF    \
-    {"heapreplace", (PyCFunction)_heapq_heapreplace, METH_FASTCALL, _heapq_heapreplace__doc__},
+    {"heapreplace", (PyCFunction)(void(*)(void))_heapq_heapreplace, METH_FASTCALL, _heapq_heapreplace__doc__},
 
 static PyObject *
 _heapq_heapreplace_impl(PyObject *module, PyObject *heap, PyObject *item);
@@ -89,7 +89,7 @@ PyDoc_STRVAR(_heapq_heappushpop__doc__,
 "a separate call to heappop().");
 
 #define _HEAPQ_HEAPPUSHPOP_METHODDEF    \
-    {"heappushpop", (PyCFunction)_heapq_heappushpop, METH_FASTCALL, _heapq_heappushpop__doc__},
+    {"heappushpop", (PyCFunction)(void(*)(void))_heapq_heappushpop, METH_FASTCALL, _heapq_heappushpop__doc__},
 
 static PyObject *
 _heapq_heappushpop_impl(PyObject *module, PyObject *heap, PyObject *item);
@@ -137,7 +137,7 @@ PyDoc_STRVAR(_heapq__heapreplace_max__doc__,
 "Maxheap variant of heapreplace.");
 
 #define _HEAPQ__HEAPREPLACE_MAX_METHODDEF    \
-    {"_heapreplace_max", (PyCFunction)_heapq__heapreplace_max, METH_FASTCALL, _heapq__heapreplace_max__doc__},
+    {"_heapreplace_max", (PyCFunction)(void(*)(void))_heapq__heapreplace_max, METH_FASTCALL, _heapq__heapreplace_max__doc__},
 
 static PyObject *
 _heapq__heapreplace_max_impl(PyObject *module, PyObject *heap,
@@ -169,4 +169,4 @@ PyDoc_STRVAR(_heapq__heapify_max__doc__,
 
 #define _HEAPQ__HEAPIFY_MAX_METHODDEF    \
     {"_heapify_max", (PyCFunction)_heapq__heapify_max, METH_O, _heapq__heapify_max__doc__},
-/*[clinic end generated code: output=0bb0dd0df473ab14 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=b73e874eeb9977b6 input=a9049054013a1b77]*/
diff --git a/Modules/clinic/_lzmamodule.c.h b/Modules/clinic/_lzmamodule.c.h
index ed7eb5d..3e938c3 100644
--- a/Modules/clinic/_lzmamodule.c.h
+++ b/Modules/clinic/_lzmamodule.c.h
@@ -81,7 +81,7 @@ PyDoc_STRVAR(_lzma_LZMADecompressor_decompress__doc__,
 "the unused_data attribute.");
 
 #define _LZMA_LZMADECOMPRESSOR_DECOMPRESS_METHODDEF    \
-    {"decompress", (PyCFunction)_lzma_LZMADecompressor_decompress, METH_FASTCALL|METH_KEYWORDS, _lzma_LZMADecompressor_decompress__doc__},
+    {"decompress", (PyCFunction)(void(*)(void))_lzma_LZMADecompressor_decompress, METH_FASTCALL|METH_KEYWORDS, _lzma_LZMADecompressor_decompress__doc__},
 
 static PyObject *
 _lzma_LZMADecompressor_decompress_impl(Decompressor *self, Py_buffer *data,
@@ -229,7 +229,7 @@ PyDoc_STRVAR(_lzma__decode_filter_properties__doc__,
 "The result does not include the filter ID itself, only the options.");
 
 #define _LZMA__DECODE_FILTER_PROPERTIES_METHODDEF    \
-    {"_decode_filter_properties", (PyCFunction)_lzma__decode_filter_properties, METH_FASTCALL, _lzma__decode_filter_properties__doc__},
+    {"_decode_filter_properties", (PyCFunction)(void(*)(void))_lzma__decode_filter_properties, METH_FASTCALL, _lzma__decode_filter_properties__doc__},
 
 static PyObject *
 _lzma__decode_filter_properties_impl(PyObject *module, lzma_vli filter_id,
@@ -256,4 +256,4 @@ exit:
 
     return return_value;
 }
-/*[clinic end generated code: output=38c2d52362bf3712 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=2acfd7c4b68530a6 input=a9049054013a1b77]*/
diff --git a/Modules/clinic/_opcode.c.h b/Modules/clinic/_opcode.c.h
index b162d84..2104a52 100644
--- a/Modules/clinic/_opcode.c.h
+++ b/Modules/clinic/_opcode.c.h
@@ -9,7 +9,7 @@ PyDoc_STRVAR(_opcode_stack_effect__doc__,
 "Compute the stack effect of the opcode.");
 
 #define _OPCODE_STACK_EFFECT_METHODDEF    \
-    {"stack_effect", (PyCFunction)_opcode_stack_effect, METH_FASTCALL|METH_KEYWORDS, _opcode_stack_effect__doc__},
+    {"stack_effect", (PyCFunction)(void(*)(void))_opcode_stack_effect, METH_FASTCALL|METH_KEYWORDS, _opcode_stack_effect__doc__},
 
 static int
 _opcode_stack_effect_impl(PyObject *module, int opcode, PyObject *oparg,
@@ -39,4 +39,4 @@ _opcode_stack_effect(PyObject *module, PyObject *const *args, Py_ssize_t nargs,
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=bbf6c4cfc91edc29 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=871941eea3d855c6 input=a9049054013a1b77]*/
diff --git a/Modules/clinic/_operator.c.h b/Modules/clinic/_operator.c.h
index 9313f95..9d7b20c 100644
--- a/Modules/clinic/_operator.c.h
+++ b/Modules/clinic/_operator.c.h
@@ -37,7 +37,7 @@ PyDoc_STRVAR(_operator_add__doc__,
 "Same as a + b.");
 
 #define _OPERATOR_ADD_METHODDEF    \
-    {"add", (PyCFunction)_operator_add, METH_FASTCALL, _operator_add__doc__},
+    {"add", (PyCFunction)(void(*)(void))_operator_add, METH_FASTCALL, _operator_add__doc__},
 
 static PyObject *
 _operator_add_impl(PyObject *module, PyObject *a, PyObject *b);
@@ -67,7 +67,7 @@ PyDoc_STRVAR(_operator_sub__doc__,
 "Same as a - b.");
 
 #define _OPERATOR_SUB_METHODDEF    \
-    {"sub", (PyCFunction)_operator_sub, METH_FASTCALL, _operator_sub__doc__},
+    {"sub", (PyCFunction)(void(*)(void))_operator_sub, METH_FASTCALL, _operator_sub__doc__},
 
 static PyObject *
 _operator_sub_impl(PyObject *module, PyObject *a, PyObject *b);
@@ -97,7 +97,7 @@ PyDoc_STRVAR(_operator_mul__doc__,
 "Same as a * b.");
 
 #define _OPERATOR_MUL_METHODDEF    \
-    {"mul", (PyCFunction)_operator_mul, METH_FASTCALL, _operator_mul__doc__},
+    {"mul", (PyCFunction)(void(*)(void))_operator_mul, METH_FASTCALL, _operator_mul__doc__},
 
 static PyObject *
 _operator_mul_impl(PyObject *module, PyObject *a, PyObject *b);
@@ -127,7 +127,7 @@ PyDoc_STRVAR(_operator_matmul__doc__,
 "Same as a @ b.");
 
 #define _OPERATOR_MATMUL_METHODDEF    \
-    {"matmul", (PyCFunction)_operator_matmul, METH_FASTCALL, _operator_matmul__doc__},
+    {"matmul", (PyCFunction)(void(*)(void))_operator_matmul, METH_FASTCALL, _operator_matmul__doc__},
 
 static PyObject *
 _operator_matmul_impl(PyObject *module, PyObject *a, PyObject *b);
@@ -157,7 +157,7 @@ PyDoc_STRVAR(_operator_floordiv__doc__,
 "Same as a // b.");
 
 #define _OPERATOR_FLOORDIV_METHODDEF    \
-    {"floordiv", (PyCFunction)_operator_floordiv, METH_FASTCALL, _operator_floordiv__doc__},
+    {"floordiv", (PyCFunction)(void(*)(void))_operator_floordiv, METH_FASTCALL, _operator_floordiv__doc__},
 
 static PyObject *
 _operator_floordiv_impl(PyObject *module, PyObject *a, PyObject *b);
@@ -187,7 +187,7 @@ PyDoc_STRVAR(_operator_truediv__doc__,
 "Same as a / b.");
 
 #define _OPERATOR_TRUEDIV_METHODDEF    \
-    {"truediv", (PyCFunction)_operator_truediv, METH_FASTCALL, _operator_truediv__doc__},
+    {"truediv", (PyCFunction)(void(*)(void))_operator_truediv, METH_FASTCALL, _operator_truediv__doc__},
 
 static PyObject *
 _operator_truediv_impl(PyObject *module, PyObject *a, PyObject *b);
@@ -217,7 +217,7 @@ PyDoc_STRVAR(_operator_mod__doc__,
 "Same as a % b.");
 
 #define _OPERATOR_MOD_METHODDEF    \
-    {"mod", (PyCFunction)_operator_mod, METH_FASTCALL, _operator_mod__doc__},
+    {"mod", (PyCFunction)(void(*)(void))_operator_mod, METH_FASTCALL, _operator_mod__doc__},
 
 static PyObject *
 _operator_mod_impl(PyObject *module, PyObject *a, PyObject *b);
@@ -292,7 +292,7 @@ PyDoc_STRVAR(_operator_lshift__doc__,
 "Same as a << b.");
 
 #define _OPERATOR_LSHIFT_METHODDEF    \
-    {"lshift", (PyCFunction)_operator_lshift, METH_FASTCALL, _operator_lshift__doc__},
+    {"lshift", (PyCFunction)(void(*)(void))_operator_lshift, METH_FASTCALL, _operator_lshift__doc__},
 
 static PyObject *
 _operator_lshift_impl(PyObject *module, PyObject *a, PyObject *b);
@@ -322,7 +322,7 @@ PyDoc_STRVAR(_operator_rshift__doc__,
 "Same as a >> b.");
 
 #define _OPERATOR_RSHIFT_METHODDEF    \
-    {"rshift", (PyCFunction)_operator_rshift, METH_FASTCALL, _operator_rshift__doc__},
+    {"rshift", (PyCFunction)(void(*)(void))_operator_rshift, METH_FASTCALL, _operator_rshift__doc__},
 
 static PyObject *
 _operator_rshift_impl(PyObject *module, PyObject *a, PyObject *b);
@@ -380,7 +380,7 @@ PyDoc_STRVAR(_operator_and___doc__,
 "Same as a & b.");
 
 #define _OPERATOR_AND__METHODDEF    \
-    {"and_", (PyCFunction)_operator_and_, METH_FASTCALL, _operator_and___doc__},
+    {"and_", (PyCFunction)(void(*)(void))_operator_and_, METH_FASTCALL, _operator_and___doc__},
 
 static PyObject *
 _operator_and__impl(PyObject *module, PyObject *a, PyObject *b);
@@ -410,7 +410,7 @@ PyDoc_STRVAR(_operator_xor__doc__,
 "Same as a ^ b.");
 
 #define _OPERATOR_XOR_METHODDEF    \
-    {"xor", (PyCFunction)_operator_xor, METH_FASTCALL, _operator_xor__doc__},
+    {"xor", (PyCFunction)(void(*)(void))_operator_xor, METH_FASTCALL, _operator_xor__doc__},
 
 static PyObject *
 _operator_xor_impl(PyObject *module, PyObject *a, PyObject *b);
@@ -440,7 +440,7 @@ PyDoc_STRVAR(_operator_or___doc__,
 "Same as a | b.");
 
 #define _OPERATOR_OR__METHODDEF    \
-    {"or_", (PyCFunction)_operator_or_, METH_FASTCALL, _operator_or___doc__},
+    {"or_", (PyCFunction)(void(*)(void))_operator_or_, METH_FASTCALL, _operator_or___doc__},
 
 static PyObject *
 _operator_or__impl(PyObject *module, PyObject *a, PyObject *b);
@@ -470,7 +470,7 @@ PyDoc_STRVAR(_operator_iadd__doc__,
 "Same as a += b.");
 
 #define _OPERATOR_IADD_METHODDEF    \
-    {"iadd", (PyCFunction)_operator_iadd, METH_FASTCALL, _operator_iadd__doc__},
+    {"iadd", (PyCFunction)(void(*)(void))_operator_iadd, METH_FASTCALL, _operator_iadd__doc__},
 
 static PyObject *
 _operator_iadd_impl(PyObject *module, PyObject *a, PyObject *b);
@@ -500,7 +500,7 @@ PyDoc_STRVAR(_operator_isub__doc__,
 "Same as a -= b.");
 
 #define _OPERATOR_ISUB_METHODDEF    \
-    {"isub", (PyCFunction)_operator_isub, METH_FASTCALL, _operator_isub__doc__},
+    {"isub", (PyCFunction)(void(*)(void))_operator_isub, METH_FASTCALL, _operator_isub__doc__},
 
 static PyObject *
 _operator_isub_impl(PyObject *module, PyObject *a, PyObject *b);
@@ -530,7 +530,7 @@ PyDoc_STRVAR(_operator_imul__doc__,
 "Same as a *= b.");
 
 #define _OPERATOR_IMUL_METHODDEF    \
-    {"imul", (PyCFunction)_operator_imul, METH_FASTCALL, _operator_imul__doc__},
+    {"imul", (PyCFunction)(void(*)(void))_operator_imul, METH_FASTCALL, _operator_imul__doc__},
 
 static PyObject *
 _operator_imul_impl(PyObject *module, PyObject *a, PyObject *b);
@@ -560,7 +560,7 @@ PyDoc_STRVAR(_operator_imatmul__doc__,
 "Same as a @= b.");
 
 #define _OPERATOR_IMATMUL_METHODDEF    \
-    {"imatmul", (PyCFunction)_operator_imatmul, METH_FASTCALL, _operator_imatmul__doc__},
+    {"imatmul", (PyCFunction)(void(*)(void))_operator_imatmul, METH_FASTCALL, _operator_imatmul__doc__},
 
 static PyObject *
 _operator_imatmul_impl(PyObject *module, PyObject *a, PyObject *b);
@@ -590,7 +590,7 @@ PyDoc_STRVAR(_operator_ifloordiv__doc__,
 "Same as a //= b.");
 
 #define _OPERATOR_IFLOORDIV_METHODDEF    \
-    {"ifloordiv", (PyCFunction)_operator_ifloordiv, METH_FASTCALL, _operator_ifloordiv__doc__},
+    {"ifloordiv", (PyCFunction)(void(*)(void))_operator_ifloordiv, METH_FASTCALL, _operator_ifloordiv__doc__},
 
 static PyObject *
 _operator_ifloordiv_impl(PyObject *module, PyObject *a, PyObject *b);
@@ -620,7 +620,7 @@ PyDoc_STRVAR(_operator_itruediv__doc__,
 "Same as a /= b.");
 
 #define _OPERATOR_ITRUEDIV_METHODDEF    \
-    {"itruediv", (PyCFunction)_operator_itruediv, METH_FASTCALL, _operator_itruediv__doc__},
+    {"itruediv", (PyCFunction)(void(*)(void))_operator_itruediv, METH_FASTCALL, _operator_itruediv__doc__},
 
 static PyObject *
 _operator_itruediv_impl(PyObject *module, PyObject *a, PyObject *b);
@@ -650,7 +650,7 @@ PyDoc_STRVAR(_operator_imod__doc__,
 "Same as a %= b.");
 
 #define _OPERATOR_IMOD_METHODDEF    \
-    {"imod", (PyCFunction)_operator_imod, METH_FASTCALL, _operator_imod__doc__},
+    {"imod", (PyCFunction)(void(*)(void))_operator_imod, METH_FASTCALL, _operator_imod__doc__},
 
 static PyObject *
 _operator_imod_impl(PyObject *module, PyObject *a, PyObject *b);
@@ -680,7 +680,7 @@ PyDoc_STRVAR(_operator_ilshift__doc__,
 "Same as a <<= b.");
 
 #define _OPERATOR_ILSHIFT_METHODDEF    \
-    {"ilshift", (PyCFunction)_operator_ilshift, METH_FASTCALL, _operator_ilshift__doc__},
+    {"ilshift", (PyCFunction)(void(*)(void))_operator_ilshift, METH_FASTCALL, _operator_ilshift__doc__},
 
 static PyObject *
 _operator_ilshift_impl(PyObject *module, PyObject *a, PyObject *b);
@@ -710,7 +710,7 @@ PyDoc_STRVAR(_operator_irshift__doc__,
 "Same as a >>= b.");
 
 #define _OPERATOR_IRSHIFT_METHODDEF    \
-    {"irshift", (PyCFunction)_operator_irshift, METH_FASTCALL, _operator_irshift__doc__},
+    {"irshift", (PyCFunction)(void(*)(void))_operator_irshift, METH_FASTCALL, _operator_irshift__doc__},
 
 static PyObject *
 _operator_irshift_impl(PyObject *module, PyObject *a, PyObject *b);
@@ -740,7 +740,7 @@ PyDoc_STRVAR(_operator_iand__doc__,
 "Same as a &= b.");
 
 #define _OPERATOR_IAND_METHODDEF    \
-    {"iand", (PyCFunction)_operator_iand, METH_FASTCALL, _operator_iand__doc__},
+    {"iand", (PyCFunction)(void(*)(void))_operator_iand, METH_FASTCALL, _operator_iand__doc__},
 
 static PyObject *
 _operator_iand_impl(PyObject *module, PyObject *a, PyObject *b);
@@ -770,7 +770,7 @@ PyDoc_STRVAR(_operator_ixor__doc__,
 "Same as a ^= b.");
 
 #define _OPERATOR_IXOR_METHODDEF    \
-    {"ixor", (PyCFunction)_operator_ixor, METH_FASTCALL, _operator_ixor__doc__},
+    {"ixor", (PyCFunction)(void(*)(void))_operator_ixor, METH_FASTCALL, _operator_ixor__doc__},
 
 static PyObject *
 _operator_ixor_impl(PyObject *module, PyObject *a, PyObject *b);
@@ -800,7 +800,7 @@ PyDoc_STRVAR(_operator_ior__doc__,
 "Same as a |= b.");
 
 #define _OPERATOR_IOR_METHODDEF    \
-    {"ior", (PyCFunction)_operator_ior, METH_FASTCALL, _operator_ior__doc__},
+    {"ior", (PyCFunction)(void(*)(void))_operator_ior, METH_FASTCALL, _operator_ior__doc__},
 
 static PyObject *
 _operator_ior_impl(PyObject *module, PyObject *a, PyObject *b);
@@ -830,7 +830,7 @@ PyDoc_STRVAR(_operator_concat__doc__,
 "Same as a + b, for a and b sequences.");
 
 #define _OPERATOR_CONCAT_METHODDEF    \
-    {"concat", (PyCFunction)_operator_concat, METH_FASTCALL, _operator_concat__doc__},
+    {"concat", (PyCFunction)(void(*)(void))_operator_concat, METH_FASTCALL, _operator_concat__doc__},
 
 static PyObject *
 _operator_concat_impl(PyObject *module, PyObject *a, PyObject *b);
@@ -860,7 +860,7 @@ PyDoc_STRVAR(_operator_iconcat__doc__,
 "Same as a += b, for a and b sequences.");
 
 #define _OPERATOR_ICONCAT_METHODDEF    \
-    {"iconcat", (PyCFunction)_operator_iconcat, METH_FASTCALL, _operator_iconcat__doc__},
+    {"iconcat", (PyCFunction)(void(*)(void))_operator_iconcat, METH_FASTCALL, _operator_iconcat__doc__},
 
 static PyObject *
 _operator_iconcat_impl(PyObject *module, PyObject *a, PyObject *b);
@@ -890,7 +890,7 @@ PyDoc_STRVAR(_operator_contains__doc__,
 "Same as b in a (note reversed operands).");
 
 #define _OPERATOR_CONTAINS_METHODDEF    \
-    {"contains", (PyCFunction)_operator_contains, METH_FASTCALL, _operator_contains__doc__},
+    {"contains", (PyCFunction)(void(*)(void))_operator_contains, METH_FASTCALL, _operator_contains__doc__},
 
 static int
 _operator_contains_impl(PyObject *module, PyObject *a, PyObject *b);
@@ -925,7 +925,7 @@ PyDoc_STRVAR(_operator_indexOf__doc__,
 "Return the first index of b in a.");
 
 #define _OPERATOR_INDEXOF_METHODDEF    \
-    {"indexOf", (PyCFunction)_operator_indexOf, METH_FASTCALL, _operator_indexOf__doc__},
+    {"indexOf", (PyCFunction)(void(*)(void))_operator_indexOf, METH_FASTCALL, _operator_indexOf__doc__},
 
 static Py_ssize_t
 _operator_indexOf_impl(PyObject *module, PyObject *a, PyObject *b);
@@ -960,7 +960,7 @@ PyDoc_STRVAR(_operator_countOf__doc__,
 "Return the number of times b occurs in a.");
 
 #define _OPERATOR_COUNTOF_METHODDEF    \
-    {"countOf", (PyCFunction)_operator_countOf, METH_FASTCALL, _operator_countOf__doc__},
+    {"countOf", (PyCFunction)(void(*)(void))_operator_countOf, METH_FASTCALL, _operator_countOf__doc__},
 
 static Py_ssize_t
 _operator_countOf_impl(PyObject *module, PyObject *a, PyObject *b);
@@ -995,7 +995,7 @@ PyDoc_STRVAR(_operator_getitem__doc__,
 "Same as a[b].");
 
 #define _OPERATOR_GETITEM_METHODDEF    \
-    {"getitem", (PyCFunction)_operator_getitem, METH_FASTCALL, _operator_getitem__doc__},
+    {"getitem", (PyCFunction)(void(*)(void))_operator_getitem, METH_FASTCALL, _operator_getitem__doc__},
 
 static PyObject *
 _operator_getitem_impl(PyObject *module, PyObject *a, PyObject *b);
@@ -1025,7 +1025,7 @@ PyDoc_STRVAR(_operator_setitem__doc__,
 "Same as a[b] = c.");
 
 #define _OPERATOR_SETITEM_METHODDEF    \
-    {"setitem", (PyCFunction)_operator_setitem, METH_FASTCALL, _operator_setitem__doc__},
+    {"setitem", (PyCFunction)(void(*)(void))_operator_setitem, METH_FASTCALL, _operator_setitem__doc__},
 
 static PyObject *
 _operator_setitem_impl(PyObject *module, PyObject *a, PyObject *b,
@@ -1057,7 +1057,7 @@ PyDoc_STRVAR(_operator_delitem__doc__,
 "Same as del a[b].");
 
 #define _OPERATOR_DELITEM_METHODDEF    \
-    {"delitem", (PyCFunction)_operator_delitem, METH_FASTCALL, _operator_delitem__doc__},
+    {"delitem", (PyCFunction)(void(*)(void))_operator_delitem, METH_FASTCALL, _operator_delitem__doc__},
 
 static PyObject *
 _operator_delitem_impl(PyObject *module, PyObject *a, PyObject *b);
@@ -1087,7 +1087,7 @@ PyDoc_STRVAR(_operator_eq__doc__,
 "Same as a == b.");
 
 #define _OPERATOR_EQ_METHODDEF    \
-    {"eq", (PyCFunction)_operator_eq, METH_FASTCALL, _operator_eq__doc__},
+    {"eq", (PyCFunction)(void(*)(void))_operator_eq, METH_FASTCALL, _operator_eq__doc__},
 
 static PyObject *
 _operator_eq_impl(PyObject *module, PyObject *a, PyObject *b);
@@ -1117,7 +1117,7 @@ PyDoc_STRVAR(_operator_ne__doc__,
 "Same as a != b.");
 
 #define _OPERATOR_NE_METHODDEF    \
-    {"ne", (PyCFunction)_operator_ne, METH_FASTCALL, _operator_ne__doc__},
+    {"ne", (PyCFunction)(void(*)(void))_operator_ne, METH_FASTCALL, _operator_ne__doc__},
 
 static PyObject *
 _operator_ne_impl(PyObject *module, PyObject *a, PyObject *b);
@@ -1147,7 +1147,7 @@ PyDoc_STRVAR(_operator_lt__doc__,
 "Same as a < b.");
 
 #define _OPERATOR_LT_METHODDEF    \
-    {"lt", (PyCFunction)_operator_lt, METH_FASTCALL, _operator_lt__doc__},
+    {"lt", (PyCFunction)(void(*)(void))_operator_lt, METH_FASTCALL, _operator_lt__doc__},
 
 static PyObject *
 _operator_lt_impl(PyObject *module, PyObject *a, PyObject *b);
@@ -1177,7 +1177,7 @@ PyDoc_STRVAR(_operator_le__doc__,
 "Same as a <= b.");
 
 #define _OPERATOR_LE_METHODDEF    \
-    {"le", (PyCFunction)_operator_le, METH_FASTCALL, _operator_le__doc__},
+    {"le", (PyCFunction)(void(*)(void))_operator_le, METH_FASTCALL, _operator_le__doc__},
 
 static PyObject *
 _operator_le_impl(PyObject *module, PyObject *a, PyObject *b);
@@ -1207,7 +1207,7 @@ PyDoc_STRVAR(_operator_gt__doc__,
 "Same as a > b.");
 
 #define _OPERATOR_GT_METHODDEF    \
-    {"gt", (PyCFunction)_operator_gt, METH_FASTCALL, _operator_gt__doc__},
+    {"gt", (PyCFunction)(void(*)(void))_operator_gt, METH_FASTCALL, _operator_gt__doc__},
 
 static PyObject *
 _operator_gt_impl(PyObject *module, PyObject *a, PyObject *b);
@@ -1237,7 +1237,7 @@ PyDoc_STRVAR(_operator_ge__doc__,
 "Same as a >= b.");
 
 #define _OPERATOR_GE_METHODDEF    \
-    {"ge", (PyCFunction)_operator_ge, METH_FASTCALL, _operator_ge__doc__},
+    {"ge", (PyCFunction)(void(*)(void))_operator_ge, METH_FASTCALL, _operator_ge__doc__},
 
 static PyObject *
 _operator_ge_impl(PyObject *module, PyObject *a, PyObject *b);
@@ -1267,7 +1267,7 @@ PyDoc_STRVAR(_operator_pow__doc__,
 "Same as a ** b.");
 
 #define _OPERATOR_POW_METHODDEF    \
-    {"pow", (PyCFunction)_operator_pow, METH_FASTCALL, _operator_pow__doc__},
+    {"pow", (PyCFunction)(void(*)(void))_operator_pow, METH_FASTCALL, _operator_pow__doc__},
 
 static PyObject *
 _operator_pow_impl(PyObject *module, PyObject *a, PyObject *b);
@@ -1297,7 +1297,7 @@ PyDoc_STRVAR(_operator_ipow__doc__,
 "Same as a **= b.");
 
 #define _OPERATOR_IPOW_METHODDEF    \
-    {"ipow", (PyCFunction)_operator_ipow, METH_FASTCALL, _operator_ipow__doc__},
+    {"ipow", (PyCFunction)(void(*)(void))_operator_ipow, METH_FASTCALL, _operator_ipow__doc__},
 
 static PyObject *
 _operator_ipow_impl(PyObject *module, PyObject *a, PyObject *b);
@@ -1336,7 +1336,7 @@ PyDoc_STRVAR(_operator_is___doc__,
 "Same as a is b.");
 
 #define _OPERATOR_IS__METHODDEF    \
-    {"is_", (PyCFunction)_operator_is_, METH_FASTCALL, _operator_is___doc__},
+    {"is_", (PyCFunction)(void(*)(void))_operator_is_, METH_FASTCALL, _operator_is___doc__},
 
 static PyObject *
 _operator_is__impl(PyObject *module, PyObject *a, PyObject *b);
@@ -1366,7 +1366,7 @@ PyDoc_STRVAR(_operator_is_not__doc__,
 "Same as a is not b.");
 
 #define _OPERATOR_IS_NOT_METHODDEF    \
-    {"is_not", (PyCFunction)_operator_is_not, METH_FASTCALL, _operator_is_not__doc__},
+    {"is_not", (PyCFunction)(void(*)(void))_operator_is_not, METH_FASTCALL, _operator_is_not__doc__},
 
 static PyObject *
 _operator_is_not_impl(PyObject *module, PyObject *a, PyObject *b);
@@ -1402,7 +1402,7 @@ PyDoc_STRVAR(_operator_length_hint__doc__,
 "The result will be an integer >= 0.");
 
 #define _OPERATOR_LENGTH_HINT_METHODDEF    \
-    {"length_hint", (PyCFunction)_operator_length_hint, METH_FASTCALL, _operator_length_hint__doc__},
+    {"length_hint", (PyCFunction)(void(*)(void))_operator_length_hint, METH_FASTCALL, _operator_length_hint__doc__},
 
 static Py_ssize_t
 _operator_length_hint_impl(PyObject *module, PyObject *obj,
@@ -1447,7 +1447,7 @@ PyDoc_STRVAR(_operator__compare_digest__doc__,
 "types and lengths of a and b--but not their values.");
 
 #define _OPERATOR__COMPARE_DIGEST_METHODDEF    \
-    {"_compare_digest", (PyCFunction)_operator__compare_digest, METH_FASTCALL, _operator__compare_digest__doc__},
+    {"_compare_digest", (PyCFunction)(void(*)(void))_operator__compare_digest, METH_FASTCALL, _operator__compare_digest__doc__},
 
 static PyObject *
 _operator__compare_digest_impl(PyObject *module, PyObject *a, PyObject *b);
@@ -1469,4 +1469,4 @@ _operator__compare_digest(PyObject *module, PyObject *const *args, Py_ssize_t na
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=d840f7ea76af2372 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=424b884884ab20b7 input=a9049054013a1b77]*/
diff --git a/Modules/clinic/_pickle.c.h b/Modules/clinic/_pickle.c.h
index 6d90728..3f6be4b 100644
--- a/Modules/clinic/_pickle.c.h
+++ b/Modules/clinic/_pickle.c.h
@@ -199,7 +199,7 @@ PyDoc_STRVAR(_pickle_Unpickler_find_class__doc__,
 "needed.  Both arguments passed are str objects.");
 
 #define _PICKLE_UNPICKLER_FIND_CLASS_METHODDEF    \
-    {"find_class", (PyCFunction)_pickle_Unpickler_find_class, METH_FASTCALL, _pickle_Unpickler_find_class__doc__},
+    {"find_class", (PyCFunction)(void(*)(void))_pickle_Unpickler_find_class, METH_FASTCALL, _pickle_Unpickler_find_class__doc__},
 
 static PyObject *
 _pickle_Unpickler_find_class_impl(UnpicklerObject *self,
@@ -385,7 +385,7 @@ PyDoc_STRVAR(_pickle_dump__doc__,
 "2, so that the pickle data stream is readable with Python 2.");
 
 #define _PICKLE_DUMP_METHODDEF    \
-    {"dump", (PyCFunction)_pickle_dump, METH_FASTCALL|METH_KEYWORDS, _pickle_dump__doc__},
+    {"dump", (PyCFunction)(void(*)(void))_pickle_dump, METH_FASTCALL|METH_KEYWORDS, _pickle_dump__doc__},
 
 static PyObject *
 _pickle_dump_impl(PyObject *module, PyObject *obj, PyObject *file,
@@ -432,7 +432,7 @@ PyDoc_STRVAR(_pickle_dumps__doc__,
 "Python 2, so that the pickle data stream is readable with Python 2.");
 
 #define _PICKLE_DUMPS_METHODDEF    \
-    {"dumps", (PyCFunction)_pickle_dumps, METH_FASTCALL|METH_KEYWORDS, _pickle_dumps__doc__},
+    {"dumps", (PyCFunction)(void(*)(void))_pickle_dumps, METH_FASTCALL|METH_KEYWORDS, _pickle_dumps__doc__},
 
 static PyObject *
 _pickle_dumps_impl(PyObject *module, PyObject *obj, PyObject *protocol,
@@ -488,7 +488,7 @@ PyDoc_STRVAR(_pickle_load__doc__,
 "string instances as bytes objects.");
 
 #define _PICKLE_LOAD_METHODDEF    \
-    {"load", (PyCFunction)_pickle_load, METH_FASTCALL|METH_KEYWORDS, _pickle_load__doc__},
+    {"load", (PyCFunction)(void(*)(void))_pickle_load, METH_FASTCALL|METH_KEYWORDS, _pickle_load__doc__},
 
 static PyObject *
 _pickle_load_impl(PyObject *module, PyObject *file, int fix_imports,
@@ -536,7 +536,7 @@ PyDoc_STRVAR(_pickle_loads__doc__,
 "string instances as bytes objects.");
 
 #define _PICKLE_LOADS_METHODDEF    \
-    {"loads", (PyCFunction)_pickle_loads, METH_FASTCALL|METH_KEYWORDS, _pickle_loads__doc__},
+    {"loads", (PyCFunction)(void(*)(void))_pickle_loads, METH_FASTCALL|METH_KEYWORDS, _pickle_loads__doc__},
 
 static PyObject *
 _pickle_loads_impl(PyObject *module, PyObject *data, int fix_imports,
@@ -562,4 +562,4 @@ _pickle_loads(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObjec
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=6fc104b8299c82dd input=a9049054013a1b77]*/
+/*[clinic end generated code: output=4b32d63ff58b64d8 input=a9049054013a1b77]*/
diff --git a/Modules/clinic/_queuemodule.c.h b/Modules/clinic/_queuemodule.c.h
index 97247fd..a19fe78 100644
--- a/Modules/clinic/_queuemodule.c.h
+++ b/Modules/clinic/_queuemodule.c.h
@@ -40,7 +40,7 @@ PyDoc_STRVAR(_queue_SimpleQueue_put__doc__,
 "never blocks.  They are provided for compatibility with the Queue class.");
 
 #define _QUEUE_SIMPLEQUEUE_PUT_METHODDEF    \
-    {"put", (PyCFunction)_queue_SimpleQueue_put, METH_FASTCALL|METH_KEYWORDS, _queue_SimpleQueue_put__doc__},
+    {"put", (PyCFunction)(void(*)(void))_queue_SimpleQueue_put, METH_FASTCALL|METH_KEYWORDS, _queue_SimpleQueue_put__doc__},
 
 static PyObject *
 _queue_SimpleQueue_put_impl(simplequeueobject *self, PyObject *item,
@@ -76,7 +76,7 @@ PyDoc_STRVAR(_queue_SimpleQueue_put_nowait__doc__,
 "for compatibility with the Queue class.");
 
 #define _QUEUE_SIMPLEQUEUE_PUT_NOWAIT_METHODDEF    \
-    {"put_nowait", (PyCFunction)_queue_SimpleQueue_put_nowait, METH_FASTCALL|METH_KEYWORDS, _queue_SimpleQueue_put_nowait__doc__},
+    {"put_nowait", (PyCFunction)(void(*)(void))_queue_SimpleQueue_put_nowait, METH_FASTCALL|METH_KEYWORDS, _queue_SimpleQueue_put_nowait__doc__},
 
 static PyObject *
 _queue_SimpleQueue_put_nowait_impl(simplequeueobject *self, PyObject *item);
@@ -114,7 +114,7 @@ PyDoc_STRVAR(_queue_SimpleQueue_get__doc__,
 "in that case).");
 
 #define _QUEUE_SIMPLEQUEUE_GET_METHODDEF    \
-    {"get", (PyCFunction)_queue_SimpleQueue_get, METH_FASTCALL|METH_KEYWORDS, _queue_SimpleQueue_get__doc__},
+    {"get", (PyCFunction)(void(*)(void))_queue_SimpleQueue_get, METH_FASTCALL|METH_KEYWORDS, _queue_SimpleQueue_get__doc__},
 
 static PyObject *
 _queue_SimpleQueue_get_impl(simplequeueobject *self, int block,
@@ -215,4 +215,4 @@ _queue_SimpleQueue_qsize(simplequeueobject *self, PyObject *Py_UNUSED(ignored))
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=8badc3bb85263689 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=c12ce9050f153304 input=a9049054013a1b77]*/
diff --git a/Modules/clinic/_sre.c.h b/Modules/clinic/_sre.c.h
index 2a7ca6b..fbc5ba4 100644
--- a/Modules/clinic/_sre.c.h
+++ b/Modules/clinic/_sre.c.h
@@ -160,7 +160,7 @@ PyDoc_STRVAR(_sre_SRE_Pattern_match__doc__,
 "Matches zero or more characters at the beginning of the string.");
 
 #define _SRE_SRE_PATTERN_MATCH_METHODDEF    \
-    {"match", (PyCFunction)_sre_SRE_Pattern_match, METH_FASTCALL|METH_KEYWORDS, _sre_SRE_Pattern_match__doc__},
+    {"match", (PyCFunction)(void(*)(void))_sre_SRE_Pattern_match, METH_FASTCALL|METH_KEYWORDS, _sre_SRE_Pattern_match__doc__},
 
 static PyObject *
 _sre_SRE_Pattern_match_impl(PatternObject *self, PyObject *string,
@@ -193,7 +193,7 @@ PyDoc_STRVAR(_sre_SRE_Pattern_fullmatch__doc__,
 "Matches against all of the string.");
 
 #define _SRE_SRE_PATTERN_FULLMATCH_METHODDEF    \
-    {"fullmatch", (PyCFunction)_sre_SRE_Pattern_fullmatch, METH_FASTCALL|METH_KEYWORDS, _sre_SRE_Pattern_fullmatch__doc__},
+    {"fullmatch", (PyCFunction)(void(*)(void))_sre_SRE_Pattern_fullmatch, METH_FASTCALL|METH_KEYWORDS, _sre_SRE_Pattern_fullmatch__doc__},
 
 static PyObject *
 _sre_SRE_Pattern_fullmatch_impl(PatternObject *self, PyObject *string,
@@ -228,7 +228,7 @@ PyDoc_STRVAR(_sre_SRE_Pattern_search__doc__,
 "Return None if no position in the string matches.");
 
 #define _SRE_SRE_PATTERN_SEARCH_METHODDEF    \
-    {"search", (PyCFunction)_sre_SRE_Pattern_search, METH_FASTCALL|METH_KEYWORDS, _sre_SRE_Pattern_search__doc__},
+    {"search", (PyCFunction)(void(*)(void))_sre_SRE_Pattern_search, METH_FASTCALL|METH_KEYWORDS, _sre_SRE_Pattern_search__doc__},
 
 static PyObject *
 _sre_SRE_Pattern_search_impl(PatternObject *self, PyObject *string,
@@ -261,7 +261,7 @@ PyDoc_STRVAR(_sre_SRE_Pattern_findall__doc__,
 "Return a list of all non-overlapping matches of pattern in string.");
 
 #define _SRE_SRE_PATTERN_FINDALL_METHODDEF    \
-    {"findall", (PyCFunction)_sre_SRE_Pattern_findall, METH_FASTCALL|METH_KEYWORDS, _sre_SRE_Pattern_findall__doc__},
+    {"findall", (PyCFunction)(void(*)(void))_sre_SRE_Pattern_findall, METH_FASTCALL|METH_KEYWORDS, _sre_SRE_Pattern_findall__doc__},
 
 static PyObject *
 _sre_SRE_Pattern_findall_impl(PatternObject *self, PyObject *string,
@@ -296,7 +296,7 @@ PyDoc_STRVAR(_sre_SRE_Pattern_finditer__doc__,
 "For each match, the iterator returns a match object.");
 
 #define _SRE_SRE_PATTERN_FINDITER_METHODDEF    \
-    {"finditer", (PyCFunction)_sre_SRE_Pattern_finditer, METH_FASTCALL|METH_KEYWORDS, _sre_SRE_Pattern_finditer__doc__},
+    {"finditer", (PyCFunction)(void(*)(void))_sre_SRE_Pattern_finditer, METH_FASTCALL|METH_KEYWORDS, _sre_SRE_Pattern_finditer__doc__},
 
 static PyObject *
 _sre_SRE_Pattern_finditer_impl(PatternObject *self, PyObject *string,
@@ -328,7 +328,7 @@ PyDoc_STRVAR(_sre_SRE_Pattern_scanner__doc__,
 "\n");
 
 #define _SRE_SRE_PATTERN_SCANNER_METHODDEF    \
-    {"scanner", (PyCFunction)_sre_SRE_Pattern_scanner, METH_FASTCALL|METH_KEYWORDS, _sre_SRE_Pattern_scanner__doc__},
+    {"scanner", (PyCFunction)(void(*)(void))_sre_SRE_Pattern_scanner, METH_FASTCALL|METH_KEYWORDS, _sre_SRE_Pattern_scanner__doc__},
 
 static PyObject *
 _sre_SRE_Pattern_scanner_impl(PatternObject *self, PyObject *string,
@@ -361,7 +361,7 @@ PyDoc_STRVAR(_sre_SRE_Pattern_split__doc__,
 "Split string by the occurrences of pattern.");
 
 #define _SRE_SRE_PATTERN_SPLIT_METHODDEF    \
-    {"split", (PyCFunction)_sre_SRE_Pattern_split, METH_FASTCALL|METH_KEYWORDS, _sre_SRE_Pattern_split__doc__},
+    {"split", (PyCFunction)(void(*)(void))_sre_SRE_Pattern_split, METH_FASTCALL|METH_KEYWORDS, _sre_SRE_Pattern_split__doc__},
 
 static PyObject *
 _sre_SRE_Pattern_split_impl(PatternObject *self, PyObject *string,
@@ -393,7 +393,7 @@ PyDoc_STRVAR(_sre_SRE_Pattern_sub__doc__,
 "Return the string obtained by replacing the leftmost non-overlapping occurrences of pattern in string by the replacement repl.");
 
 #define _SRE_SRE_PATTERN_SUB_METHODDEF    \
-    {"sub", (PyCFunction)_sre_SRE_Pattern_sub, METH_FASTCALL|METH_KEYWORDS, _sre_SRE_Pattern_sub__doc__},
+    {"sub", (PyCFunction)(void(*)(void))_sre_SRE_Pattern_sub, METH_FASTCALL|METH_KEYWORDS, _sre_SRE_Pattern_sub__doc__},
 
 static PyObject *
 _sre_SRE_Pattern_sub_impl(PatternObject *self, PyObject *repl,
@@ -426,7 +426,7 @@ PyDoc_STRVAR(_sre_SRE_Pattern_subn__doc__,
 "Return the tuple (new_string, number_of_subs_made) found by replacing the leftmost non-overlapping occurrences of pattern with the replacement repl.");
 
 #define _SRE_SRE_PATTERN_SUBN_METHODDEF    \
-    {"subn", (PyCFunction)_sre_SRE_Pattern_subn, METH_FASTCALL|METH_KEYWORDS, _sre_SRE_Pattern_subn__doc__},
+    {"subn", (PyCFunction)(void(*)(void))_sre_SRE_Pattern_subn, METH_FASTCALL|METH_KEYWORDS, _sre_SRE_Pattern_subn__doc__},
 
 static PyObject *
 _sre_SRE_Pattern_subn_impl(PatternObject *self, PyObject *repl,
@@ -484,7 +484,7 @@ PyDoc_STRVAR(_sre_compile__doc__,
 "\n");
 
 #define _SRE_COMPILE_METHODDEF    \
-    {"compile", (PyCFunction)_sre_compile, METH_FASTCALL|METH_KEYWORDS, _sre_compile__doc__},
+    {"compile", (PyCFunction)(void(*)(void))_sre_compile, METH_FASTCALL|METH_KEYWORDS, _sre_compile__doc__},
 
 static PyObject *
 _sre_compile_impl(PyObject *module, PyObject *pattern, int flags,
@@ -521,7 +521,7 @@ PyDoc_STRVAR(_sre_SRE_Match_expand__doc__,
 "Return the string obtained by doing backslash substitution on the string template, as done by the sub() method.");
 
 #define _SRE_SRE_MATCH_EXPAND_METHODDEF    \
-    {"expand", (PyCFunction)_sre_SRE_Match_expand, METH_FASTCALL|METH_KEYWORDS, _sre_SRE_Match_expand__doc__},
+    {"expand", (PyCFunction)(void(*)(void))_sre_SRE_Match_expand, METH_FASTCALL|METH_KEYWORDS, _sre_SRE_Match_expand__doc__},
 
 static PyObject *
 _sre_SRE_Match_expand_impl(MatchObject *self, PyObject *template);
@@ -554,7 +554,7 @@ PyDoc_STRVAR(_sre_SRE_Match_groups__doc__,
 "    Is used for groups that did not participate in the match.");
 
 #define _SRE_SRE_MATCH_GROUPS_METHODDEF    \
-    {"groups", (PyCFunction)_sre_SRE_Match_groups, METH_FASTCALL|METH_KEYWORDS, _sre_SRE_Match_groups__doc__},
+    {"groups", (PyCFunction)(void(*)(void))_sre_SRE_Match_groups, METH_FASTCALL|METH_KEYWORDS, _sre_SRE_Match_groups__doc__},
 
 static PyObject *
 _sre_SRE_Match_groups_impl(MatchObject *self, PyObject *default_value);
@@ -587,7 +587,7 @@ PyDoc_STRVAR(_sre_SRE_Match_groupdict__doc__,
 "    Is used for groups that did not participate in the match.");
 
 #define _SRE_SRE_MATCH_GROUPDICT_METHODDEF    \
-    {"groupdict", (PyCFunction)_sre_SRE_Match_groupdict, METH_FASTCALL|METH_KEYWORDS, _sre_SRE_Match_groupdict__doc__},
+    {"groupdict", (PyCFunction)(void(*)(void))_sre_SRE_Match_groupdict, METH_FASTCALL|METH_KEYWORDS, _sre_SRE_Match_groupdict__doc__},
 
 static PyObject *
 _sre_SRE_Match_groupdict_impl(MatchObject *self, PyObject *default_value);
@@ -617,7 +617,7 @@ PyDoc_STRVAR(_sre_SRE_Match_start__doc__,
 "Return index of the start of the substring matched by group.");
 
 #define _SRE_SRE_MATCH_START_METHODDEF    \
-    {"start", (PyCFunction)_sre_SRE_Match_start, METH_FASTCALL, _sre_SRE_Match_start__doc__},
+    {"start", (PyCFunction)(void(*)(void))_sre_SRE_Match_start, METH_FASTCALL, _sre_SRE_Match_start__doc__},
 
 static Py_ssize_t
 _sre_SRE_Match_start_impl(MatchObject *self, PyObject *group);
@@ -651,7 +651,7 @@ PyDoc_STRVAR(_sre_SRE_Match_end__doc__,
 "Return index of the end of the substring matched by group.");
 
 #define _SRE_SRE_MATCH_END_METHODDEF    \
-    {"end", (PyCFunction)_sre_SRE_Match_end, METH_FASTCALL, _sre_SRE_Match_end__doc__},
+    {"end", (PyCFunction)(void(*)(void))_sre_SRE_Match_end, METH_FASTCALL, _sre_SRE_Match_end__doc__},
 
 static Py_ssize_t
 _sre_SRE_Match_end_impl(MatchObject *self, PyObject *group);
@@ -685,7 +685,7 @@ PyDoc_STRVAR(_sre_SRE_Match_span__doc__,
 "For match object m, return the 2-tuple (m.start(group), m.end(group)).");
 
 #define _SRE_SRE_MATCH_SPAN_METHODDEF    \
-    {"span", (PyCFunction)_sre_SRE_Match_span, METH_FASTCALL, _sre_SRE_Match_span__doc__},
+    {"span", (PyCFunction)(void(*)(void))_sre_SRE_Match_span, METH_FASTCALL, _sre_SRE_Match_span__doc__},
 
 static PyObject *
 _sre_SRE_Match_span_impl(MatchObject *self, PyObject *group);
@@ -765,4 +765,4 @@ _sre_SRE_Scanner_search(ScannerObject *self, PyObject *Py_UNUSED(ignored))
 {
     return _sre_SRE_Scanner_search_impl(self);
 }
-/*[clinic end generated code: output=4b807104b65c1e0e input=a9049054013a1b77]*/
+/*[clinic end generated code: output=5edeca5ec36b5f34 input=a9049054013a1b77]*/
diff --git a/Modules/clinic/_ssl.c.h b/Modules/clinic/_ssl.c.h
index 186e643..82dc197 100644
--- a/Modules/clinic/_ssl.c.h
+++ b/Modules/clinic/_ssl.c.h
@@ -60,7 +60,7 @@ PyDoc_STRVAR(_ssl__SSLSocket_getpeercert__doc__,
 "return the certificate even if it wasn\'t validated.");
 
 #define _SSL__SSLSOCKET_GETPEERCERT_METHODDEF    \
-    {"getpeercert", (PyCFunction)_ssl__SSLSocket_getpeercert, METH_FASTCALL, _ssl__SSLSocket_getpeercert__doc__},
+    {"getpeercert", (PyCFunction)(void(*)(void))_ssl__SSLSocket_getpeercert, METH_FASTCALL, _ssl__SSLSocket_getpeercert__doc__},
 
 static PyObject *
 _ssl__SSLSocket_getpeercert_impl(PySSLSocket *self, int binary_mode);
@@ -318,7 +318,7 @@ PyDoc_STRVAR(_ssl__SSLSocket_get_channel_binding__doc__,
 "Only \'tls-unique\' channel binding data from RFC 5929 is supported.");
 
 #define _SSL__SSLSOCKET_GET_CHANNEL_BINDING_METHODDEF    \
-    {"get_channel_binding", (PyCFunction)_ssl__SSLSocket_get_channel_binding, METH_FASTCALL|METH_KEYWORDS, _ssl__SSLSocket_get_channel_binding__doc__},
+    {"get_channel_binding", (PyCFunction)(void(*)(void))_ssl__SSLSocket_get_channel_binding, METH_FASTCALL|METH_KEYWORDS, _ssl__SSLSocket_get_channel_binding__doc__},
 
 static PyObject *
 _ssl__SSLSocket_get_channel_binding_impl(PySSLSocket *self,
@@ -500,7 +500,7 @@ PyDoc_STRVAR(_ssl__SSLContext_load_cert_chain__doc__,
 "\n");
 
 #define _SSL__SSLCONTEXT_LOAD_CERT_CHAIN_METHODDEF    \
-    {"load_cert_chain", (PyCFunction)_ssl__SSLContext_load_cert_chain, METH_FASTCALL|METH_KEYWORDS, _ssl__SSLContext_load_cert_chain__doc__},
+    {"load_cert_chain", (PyCFunction)(void(*)(void))_ssl__SSLContext_load_cert_chain, METH_FASTCALL|METH_KEYWORDS, _ssl__SSLContext_load_cert_chain__doc__},
 
 static PyObject *
 _ssl__SSLContext_load_cert_chain_impl(PySSLContext *self, PyObject *certfile,
@@ -532,7 +532,7 @@ PyDoc_STRVAR(_ssl__SSLContext_load_verify_locations__doc__,
 "\n");
 
 #define _SSL__SSLCONTEXT_LOAD_VERIFY_LOCATIONS_METHODDEF    \
-    {"load_verify_locations", (PyCFunction)_ssl__SSLContext_load_verify_locations, METH_FASTCALL|METH_KEYWORDS, _ssl__SSLContext_load_verify_locations__doc__},
+    {"load_verify_locations", (PyCFunction)(void(*)(void))_ssl__SSLContext_load_verify_locations, METH_FASTCALL|METH_KEYWORDS, _ssl__SSLContext_load_verify_locations__doc__},
 
 static PyObject *
 _ssl__SSLContext_load_verify_locations_impl(PySSLContext *self,
@@ -575,7 +575,7 @@ PyDoc_STRVAR(_ssl__SSLContext__wrap_socket__doc__,
 "\n");
 
 #define _SSL__SSLCONTEXT__WRAP_SOCKET_METHODDEF    \
-    {"_wrap_socket", (PyCFunction)_ssl__SSLContext__wrap_socket, METH_FASTCALL|METH_KEYWORDS, _ssl__SSLContext__wrap_socket__doc__},
+    {"_wrap_socket", (PyCFunction)(void(*)(void))_ssl__SSLContext__wrap_socket, METH_FASTCALL|METH_KEYWORDS, _ssl__SSLContext__wrap_socket__doc__},
 
 static PyObject *
 _ssl__SSLContext__wrap_socket_impl(PySSLContext *self, PyObject *sock,
@@ -611,7 +611,7 @@ PyDoc_STRVAR(_ssl__SSLContext__wrap_bio__doc__,
 "\n");
 
 #define _SSL__SSLCONTEXT__WRAP_BIO_METHODDEF    \
-    {"_wrap_bio", (PyCFunction)_ssl__SSLContext__wrap_bio, METH_FASTCALL|METH_KEYWORDS, _ssl__SSLContext__wrap_bio__doc__},
+    {"_wrap_bio", (PyCFunction)(void(*)(void))_ssl__SSLContext__wrap_bio, METH_FASTCALL|METH_KEYWORDS, _ssl__SSLContext__wrap_bio__doc__},
 
 static PyObject *
 _ssl__SSLContext__wrap_bio_impl(PySSLContext *self, PySSLMemoryBIO *incoming,
@@ -725,7 +725,7 @@ PyDoc_STRVAR(_ssl__SSLContext_get_ca_certs__doc__,
 "been used at least once.");
 
 #define _SSL__SSLCONTEXT_GET_CA_CERTS_METHODDEF    \
-    {"get_ca_certs", (PyCFunction)_ssl__SSLContext_get_ca_certs, METH_FASTCALL|METH_KEYWORDS, _ssl__SSLContext_get_ca_certs__doc__},
+    {"get_ca_certs", (PyCFunction)(void(*)(void))_ssl__SSLContext_get_ca_certs, METH_FASTCALL|METH_KEYWORDS, _ssl__SSLContext_get_ca_certs__doc__},
 
 static PyObject *
 _ssl__SSLContext_get_ca_certs_impl(PySSLContext *self, int binary_form);
@@ -782,7 +782,7 @@ PyDoc_STRVAR(_ssl_MemoryBIO_read__doc__,
 "distinguish between the two.");
 
 #define _SSL_MEMORYBIO_READ_METHODDEF    \
-    {"read", (PyCFunction)_ssl_MemoryBIO_read, METH_FASTCALL, _ssl_MemoryBIO_read__doc__},
+    {"read", (PyCFunction)(void(*)(void))_ssl_MemoryBIO_read, METH_FASTCALL, _ssl_MemoryBIO_read__doc__},
 
 static PyObject *
 _ssl_MemoryBIO_read_impl(PySSLMemoryBIO *self, int len);
@@ -867,7 +867,7 @@ PyDoc_STRVAR(_ssl_RAND_add__doc__,
 "string.  See RFC 4086.");
 
 #define _SSL_RAND_ADD_METHODDEF    \
-    {"RAND_add", (PyCFunction)_ssl_RAND_add, METH_FASTCALL, _ssl_RAND_add__doc__},
+    {"RAND_add", (PyCFunction)(void(*)(void))_ssl_RAND_add, METH_FASTCALL, _ssl_RAND_add__doc__},
 
 static PyObject *
 _ssl_RAND_add_impl(PyObject *module, Py_buffer *view, double entropy);
@@ -1036,7 +1036,7 @@ PyDoc_STRVAR(_ssl_txt2obj__doc__,
 "long name are also matched.");
 
 #define _SSL_TXT2OBJ_METHODDEF    \
-    {"txt2obj", (PyCFunction)_ssl_txt2obj, METH_FASTCALL|METH_KEYWORDS, _ssl_txt2obj__doc__},
+    {"txt2obj", (PyCFunction)(void(*)(void))_ssl_txt2obj, METH_FASTCALL|METH_KEYWORDS, _ssl_txt2obj__doc__},
 
 static PyObject *
 _ssl_txt2obj_impl(PyObject *module, const char *txt, int name);
@@ -1102,7 +1102,7 @@ PyDoc_STRVAR(_ssl_enum_certificates__doc__,
 "a set of OIDs or the boolean True.");
 
 #define _SSL_ENUM_CERTIFICATES_METHODDEF    \
-    {"enum_certificates", (PyCFunction)_ssl_enum_certificates, METH_FASTCALL|METH_KEYWORDS, _ssl_enum_certificates__doc__},
+    {"enum_certificates", (PyCFunction)(void(*)(void))_ssl_enum_certificates, METH_FASTCALL|METH_KEYWORDS, _ssl_enum_certificates__doc__},
 
 static PyObject *
 _ssl_enum_certificates_impl(PyObject *module, const char *store_name);
@@ -1141,7 +1141,7 @@ PyDoc_STRVAR(_ssl_enum_crls__doc__,
 "X509_ASN_ENCODING or PKCS_7_ASN_ENCODING.");
 
 #define _SSL_ENUM_CRLS_METHODDEF    \
-    {"enum_crls", (PyCFunction)_ssl_enum_crls, METH_FASTCALL|METH_KEYWORDS, _ssl_enum_crls__doc__},
+    {"enum_crls", (PyCFunction)(void(*)(void))_ssl_enum_crls, METH_FASTCALL|METH_KEYWORDS, _ssl_enum_crls__doc__},
 
 static PyObject *
 _ssl_enum_crls_impl(PyObject *module, const char *store_name);
@@ -1193,4 +1193,4 @@ exit:
 #ifndef _SSL_ENUM_CRLS_METHODDEF
     #define _SSL_ENUM_CRLS_METHODDEF
 #endif /* !defined(_SSL_ENUM_CRLS_METHODDEF) */
-/*[clinic end generated code: output=c4e73b70ac3618ba input=a9049054013a1b77]*/
+/*[clinic end generated code: output=d87f783224be8fca input=a9049054013a1b77]*/
diff --git a/Modules/clinic/_struct.c.h b/Modules/clinic/_struct.c.h
index 2ecadfb..b1fa067 100644
--- a/Modules/clinic/_struct.c.h
+++ b/Modules/clinic/_struct.c.h
@@ -85,7 +85,7 @@ PyDoc_STRVAR(Struct_unpack_from__doc__,
 "See help(struct) for more on format strings.");
 
 #define STRUCT_UNPACK_FROM_METHODDEF    \
-    {"unpack_from", (PyCFunction)Struct_unpack_from, METH_FASTCALL|METH_KEYWORDS, Struct_unpack_from__doc__},
+    {"unpack_from", (PyCFunction)(void(*)(void))Struct_unpack_from, METH_FASTCALL|METH_KEYWORDS, Struct_unpack_from__doc__},
 
 static PyObject *
 Struct_unpack_from_impl(PyStructObject *self, Py_buffer *buffer,
@@ -193,7 +193,7 @@ PyDoc_STRVAR(unpack__doc__,
 "See help(struct) for more on format strings.");
 
 #define UNPACK_METHODDEF    \
-    {"unpack", (PyCFunction)unpack, METH_FASTCALL, unpack__doc__},
+    {"unpack", (PyCFunction)(void(*)(void))unpack, METH_FASTCALL, unpack__doc__},
 
 static PyObject *
 unpack_impl(PyObject *module, PyStructObject *s_object, Py_buffer *buffer);
@@ -233,7 +233,7 @@ PyDoc_STRVAR(unpack_from__doc__,
 "See help(struct) for more on format strings.");
 
 #define UNPACK_FROM_METHODDEF    \
-    {"unpack_from", (PyCFunction)unpack_from, METH_FASTCALL|METH_KEYWORDS, unpack_from__doc__},
+    {"unpack_from", (PyCFunction)(void(*)(void))unpack_from, METH_FASTCALL|METH_KEYWORDS, unpack_from__doc__},
 
 static PyObject *
 unpack_from_impl(PyObject *module, PyStructObject *s_object,
@@ -278,7 +278,7 @@ PyDoc_STRVAR(iter_unpack__doc__,
 "Requires that the bytes length be a multiple of the format struct size.");
 
 #define ITER_UNPACK_METHODDEF    \
-    {"iter_unpack", (PyCFunction)iter_unpack, METH_FASTCALL, iter_unpack__doc__},
+    {"iter_unpack", (PyCFunction)(void(*)(void))iter_unpack, METH_FASTCALL, iter_unpack__doc__},
 
 static PyObject *
 iter_unpack_impl(PyObject *module, PyStructObject *s_object,
@@ -303,4 +303,4 @@ exit:
 
     return return_value;
 }
-/*[clinic end generated code: output=d79b009652ae0b89 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=a73b0453174e4b51 input=a9049054013a1b77]*/
diff --git a/Modules/clinic/_tkinter.c.h b/Modules/clinic/_tkinter.c.h
index a9dd739..a09bc2d 100644
--- a/Modules/clinic/_tkinter.c.h
+++ b/Modules/clinic/_tkinter.c.h
@@ -256,7 +256,7 @@ PyDoc_STRVAR(_tkinter_tkapp_createcommand__doc__,
 "\n");
 
 #define _TKINTER_TKAPP_CREATECOMMAND_METHODDEF    \
-    {"createcommand", (PyCFunction)_tkinter_tkapp_createcommand, METH_FASTCALL, _tkinter_tkapp_createcommand__doc__},
+    {"createcommand", (PyCFunction)(void(*)(void))_tkinter_tkapp_createcommand, METH_FASTCALL, _tkinter_tkapp_createcommand__doc__},
 
 static PyObject *
 _tkinter_tkapp_createcommand_impl(TkappObject *self, const char *name,
@@ -313,7 +313,7 @@ PyDoc_STRVAR(_tkinter_tkapp_createfilehandler__doc__,
 "\n");
 
 #define _TKINTER_TKAPP_CREATEFILEHANDLER_METHODDEF    \
-    {"createfilehandler", (PyCFunction)_tkinter_tkapp_createfilehandler, METH_FASTCALL, _tkinter_tkapp_createfilehandler__doc__},
+    {"createfilehandler", (PyCFunction)(void(*)(void))_tkinter_tkapp_createfilehandler, METH_FASTCALL, _tkinter_tkapp_createfilehandler__doc__},
 
 static PyObject *
 _tkinter_tkapp_createfilehandler_impl(TkappObject *self, PyObject *file,
@@ -374,7 +374,7 @@ PyDoc_STRVAR(_tkinter_tkapp_createtimerhandler__doc__,
 "\n");
 
 #define _TKINTER_TKAPP_CREATETIMERHANDLER_METHODDEF    \
-    {"createtimerhandler", (PyCFunction)_tkinter_tkapp_createtimerhandler, METH_FASTCALL, _tkinter_tkapp_createtimerhandler__doc__},
+    {"createtimerhandler", (PyCFunction)(void(*)(void))_tkinter_tkapp_createtimerhandler, METH_FASTCALL, _tkinter_tkapp_createtimerhandler__doc__},
 
 static PyObject *
 _tkinter_tkapp_createtimerhandler_impl(TkappObject *self, int milliseconds,
@@ -403,7 +403,7 @@ PyDoc_STRVAR(_tkinter_tkapp_mainloop__doc__,
 "\n");
 
 #define _TKINTER_TKAPP_MAINLOOP_METHODDEF    \
-    {"mainloop", (PyCFunction)_tkinter_tkapp_mainloop, METH_FASTCALL, _tkinter_tkapp_mainloop__doc__},
+    {"mainloop", (PyCFunction)(void(*)(void))_tkinter_tkapp_mainloop, METH_FASTCALL, _tkinter_tkapp_mainloop__doc__},
 
 static PyObject *
 _tkinter_tkapp_mainloop_impl(TkappObject *self, int threshold);
@@ -430,7 +430,7 @@ PyDoc_STRVAR(_tkinter_tkapp_dooneevent__doc__,
 "\n");
 
 #define _TKINTER_TKAPP_DOONEEVENT_METHODDEF    \
-    {"dooneevent", (PyCFunction)_tkinter_tkapp_dooneevent, METH_FASTCALL, _tkinter_tkapp_dooneevent__doc__},
+    {"dooneevent", (PyCFunction)(void(*)(void))_tkinter_tkapp_dooneevent, METH_FASTCALL, _tkinter_tkapp_dooneevent__doc__},
 
 static PyObject *
 _tkinter_tkapp_dooneevent_impl(TkappObject *self, int flags);
@@ -543,7 +543,7 @@ PyDoc_STRVAR(_tkinter_create__doc__,
 "    if not None, then pass -use to wish");
 
 #define _TKINTER_CREATE_METHODDEF    \
-    {"create", (PyCFunction)_tkinter_create, METH_FASTCALL, _tkinter_create__doc__},
+    {"create", (PyCFunction)(void(*)(void))_tkinter_create, METH_FASTCALL, _tkinter_create__doc__},
 
 static PyObject *
 _tkinter_create_impl(PyObject *module, const char *screenName,
@@ -638,4 +638,4 @@ exit:
 #ifndef _TKINTER_TKAPP_DELETEFILEHANDLER_METHODDEF
     #define _TKINTER_TKAPP_DELETEFILEHANDLER_METHODDEF
 #endif /* !defined(_TKINTER_TKAPP_DELETEFILEHANDLER_METHODDEF) */
-/*[clinic end generated code: output=eb3202e07db3dbb1 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=a9d45a90cde94980 input=a9049054013a1b77]*/
diff --git a/Modules/clinic/_tracemalloc.c.h b/Modules/clinic/_tracemalloc.c.h
index 2ad3970..aa736ec 100644
--- a/Modules/clinic/_tracemalloc.c.h
+++ b/Modules/clinic/_tracemalloc.c.h
@@ -84,7 +84,7 @@ PyDoc_STRVAR(_tracemalloc_start__doc__,
 "trace to nframe.");
 
 #define _TRACEMALLOC_START_METHODDEF    \
-    {"start", (PyCFunction)_tracemalloc_start, METH_FASTCALL, _tracemalloc_start__doc__},
+    {"start", (PyCFunction)(void(*)(void))_tracemalloc_start, METH_FASTCALL, _tracemalloc_start__doc__},
 
 static PyObject *
 _tracemalloc_start_impl(PyObject *module, int nframe);
@@ -185,4 +185,4 @@ _tracemalloc_get_traced_memory(PyObject *module, PyObject *Py_UNUSED(ignored))
 {
     return _tracemalloc_get_traced_memory_impl(module);
 }
-/*[clinic end generated code: output=d98afded69c89d52 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=d4a2dd3eaba9f72d input=a9049054013a1b77]*/
diff --git a/Modules/clinic/_weakref.c.h b/Modules/clinic/_weakref.c.h
index 1c3aea1..21f00ff 100644
--- a/Modules/clinic/_weakref.c.h
+++ b/Modules/clinic/_weakref.c.h
@@ -37,7 +37,7 @@ PyDoc_STRVAR(_weakref__remove_dead_weakref__doc__,
 "Atomically remove key from dict if it points to a dead weakref.");
 
 #define _WEAKREF__REMOVE_DEAD_WEAKREF_METHODDEF    \
-    {"_remove_dead_weakref", (PyCFunction)_weakref__remove_dead_weakref, METH_FASTCALL, _weakref__remove_dead_weakref__doc__},
+    {"_remove_dead_weakref", (PyCFunction)(void(*)(void))_weakref__remove_dead_weakref, METH_FASTCALL, _weakref__remove_dead_weakref__doc__},
 
 static PyObject *
 _weakref__remove_dead_weakref_impl(PyObject *module, PyObject *dct,
@@ -59,4 +59,4 @@ _weakref__remove_dead_weakref(PyObject *module, PyObject *const *args, Py_ssize_
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=b6a61a4f365a3f0a input=a9049054013a1b77]*/
+/*[clinic end generated code: output=927e889feb8a7dc4 input=a9049054013a1b77]*/
diff --git a/Modules/clinic/_winapi.c.h b/Modules/clinic/_winapi.c.h
index c66522e..f82b46d 100644
--- a/Modules/clinic/_winapi.c.h
+++ b/Modules/clinic/_winapi.c.h
@@ -95,7 +95,7 @@ PyDoc_STRVAR(_winapi_ConnectNamedPipe__doc__,
 "\n");
 
 #define _WINAPI_CONNECTNAMEDPIPE_METHODDEF    \
-    {"ConnectNamedPipe", (PyCFunction)_winapi_ConnectNamedPipe, METH_FASTCALL|METH_KEYWORDS, _winapi_ConnectNamedPipe__doc__},
+    {"ConnectNamedPipe", (PyCFunction)(void(*)(void))_winapi_ConnectNamedPipe, METH_FASTCALL|METH_KEYWORDS, _winapi_ConnectNamedPipe__doc__},
 
 static PyObject *
 _winapi_ConnectNamedPipe_impl(PyObject *module, HANDLE handle,
@@ -128,7 +128,7 @@ PyDoc_STRVAR(_winapi_CreateFile__doc__,
 "\n");
 
 #define _WINAPI_CREATEFILE_METHODDEF    \
-    {"CreateFile", (PyCFunction)_winapi_CreateFile, METH_FASTCALL, _winapi_CreateFile__doc__},
+    {"CreateFile", (PyCFunction)(void(*)(void))_winapi_CreateFile, METH_FASTCALL, _winapi_CreateFile__doc__},
 
 static HANDLE
 _winapi_CreateFile_impl(PyObject *module, LPCTSTR file_name,
@@ -173,7 +173,7 @@ PyDoc_STRVAR(_winapi_CreateJunction__doc__,
 "\n");
 
 #define _WINAPI_CREATEJUNCTION_METHODDEF    \
-    {"CreateJunction", (PyCFunction)_winapi_CreateJunction, METH_FASTCALL, _winapi_CreateJunction__doc__},
+    {"CreateJunction", (PyCFunction)(void(*)(void))_winapi_CreateJunction, METH_FASTCALL, _winapi_CreateJunction__doc__},
 
 static PyObject *
 _winapi_CreateJunction_impl(PyObject *module, LPWSTR src_path,
@@ -204,7 +204,7 @@ PyDoc_STRVAR(_winapi_CreateNamedPipe__doc__,
 "\n");
 
 #define _WINAPI_CREATENAMEDPIPE_METHODDEF    \
-    {"CreateNamedPipe", (PyCFunction)_winapi_CreateNamedPipe, METH_FASTCALL, _winapi_CreateNamedPipe__doc__},
+    {"CreateNamedPipe", (PyCFunction)(void(*)(void))_winapi_CreateNamedPipe, METH_FASTCALL, _winapi_CreateNamedPipe__doc__},
 
 static HANDLE
 _winapi_CreateNamedPipe_impl(PyObject *module, LPCTSTR name, DWORD open_mode,
@@ -256,7 +256,7 @@ PyDoc_STRVAR(_winapi_CreatePipe__doc__,
 "Returns a 2-tuple of handles, to the read and write ends of the pipe.");
 
 #define _WINAPI_CREATEPIPE_METHODDEF    \
-    {"CreatePipe", (PyCFunction)_winapi_CreatePipe, METH_FASTCALL, _winapi_CreatePipe__doc__},
+    {"CreatePipe", (PyCFunction)(void(*)(void))_winapi_CreatePipe, METH_FASTCALL, _winapi_CreatePipe__doc__},
 
 static PyObject *
 _winapi_CreatePipe_impl(PyObject *module, PyObject *pipe_attrs, DWORD size);
@@ -295,7 +295,7 @@ PyDoc_STRVAR(_winapi_CreateProcess__doc__,
 "process ID, and thread ID.");
 
 #define _WINAPI_CREATEPROCESS_METHODDEF    \
-    {"CreateProcess", (PyCFunction)_winapi_CreateProcess, METH_FASTCALL, _winapi_CreateProcess__doc__},
+    {"CreateProcess", (PyCFunction)(void(*)(void))_winapi_CreateProcess, METH_FASTCALL, _winapi_CreateProcess__doc__},
 
 static PyObject *
 _winapi_CreateProcess_impl(PyObject *module, Py_UNICODE *application_name,
@@ -342,7 +342,7 @@ PyDoc_STRVAR(_winapi_DuplicateHandle__doc__,
 "through both handles.");
 
 #define _WINAPI_DUPLICATEHANDLE_METHODDEF    \
-    {"DuplicateHandle", (PyCFunction)_winapi_DuplicateHandle, METH_FASTCALL, _winapi_DuplicateHandle__doc__},
+    {"DuplicateHandle", (PyCFunction)(void(*)(void))_winapi_DuplicateHandle, METH_FASTCALL, _winapi_DuplicateHandle__doc__},
 
 static HANDLE
 _winapi_DuplicateHandle_impl(PyObject *module, HANDLE source_process_handle,
@@ -604,7 +604,7 @@ PyDoc_STRVAR(_winapi_OpenProcess__doc__,
 "\n");
 
 #define _WINAPI_OPENPROCESS_METHODDEF    \
-    {"OpenProcess", (PyCFunction)_winapi_OpenProcess, METH_FASTCALL, _winapi_OpenProcess__doc__},
+    {"OpenProcess", (PyCFunction)(void(*)(void))_winapi_OpenProcess, METH_FASTCALL, _winapi_OpenProcess__doc__},
 
 static HANDLE
 _winapi_OpenProcess_impl(PyObject *module, DWORD desired_access,
@@ -642,7 +642,7 @@ PyDoc_STRVAR(_winapi_PeekNamedPipe__doc__,
 "\n");
 
 #define _WINAPI_PEEKNAMEDPIPE_METHODDEF    \
-    {"PeekNamedPipe", (PyCFunction)_winapi_PeekNamedPipe, METH_FASTCALL, _winapi_PeekNamedPipe__doc__},
+    {"PeekNamedPipe", (PyCFunction)(void(*)(void))_winapi_PeekNamedPipe, METH_FASTCALL, _winapi_PeekNamedPipe__doc__},
 
 static PyObject *
 _winapi_PeekNamedPipe_impl(PyObject *module, HANDLE handle, int size);
@@ -670,7 +670,7 @@ PyDoc_STRVAR(_winapi_ReadFile__doc__,
 "\n");
 
 #define _WINAPI_READFILE_METHODDEF    \
-    {"ReadFile", (PyCFunction)_winapi_ReadFile, METH_FASTCALL|METH_KEYWORDS, _winapi_ReadFile__doc__},
+    {"ReadFile", (PyCFunction)(void(*)(void))_winapi_ReadFile, METH_FASTCALL|METH_KEYWORDS, _winapi_ReadFile__doc__},
 
 static PyObject *
 _winapi_ReadFile_impl(PyObject *module, HANDLE handle, DWORD size,
@@ -703,7 +703,7 @@ PyDoc_STRVAR(_winapi_SetNamedPipeHandleState__doc__,
 "\n");
 
 #define _WINAPI_SETNAMEDPIPEHANDLESTATE_METHODDEF    \
-    {"SetNamedPipeHandleState", (PyCFunction)_winapi_SetNamedPipeHandleState, METH_FASTCALL, _winapi_SetNamedPipeHandleState__doc__},
+    {"SetNamedPipeHandleState", (PyCFunction)(void(*)(void))_winapi_SetNamedPipeHandleState, METH_FASTCALL, _winapi_SetNamedPipeHandleState__doc__},
 
 static PyObject *
 _winapi_SetNamedPipeHandleState_impl(PyObject *module, HANDLE named_pipe,
@@ -737,7 +737,7 @@ PyDoc_STRVAR(_winapi_TerminateProcess__doc__,
 "Terminate the specified process and all of its threads.");
 
 #define _WINAPI_TERMINATEPROCESS_METHODDEF    \
-    {"TerminateProcess", (PyCFunction)_winapi_TerminateProcess, METH_FASTCALL, _winapi_TerminateProcess__doc__},
+    {"TerminateProcess", (PyCFunction)(void(*)(void))_winapi_TerminateProcess, METH_FASTCALL, _winapi_TerminateProcess__doc__},
 
 static PyObject *
 _winapi_TerminateProcess_impl(PyObject *module, HANDLE handle,
@@ -766,7 +766,7 @@ PyDoc_STRVAR(_winapi_WaitNamedPipe__doc__,
 "\n");
 
 #define _WINAPI_WAITNAMEDPIPE_METHODDEF    \
-    {"WaitNamedPipe", (PyCFunction)_winapi_WaitNamedPipe, METH_FASTCALL, _winapi_WaitNamedPipe__doc__},
+    {"WaitNamedPipe", (PyCFunction)(void(*)(void))_winapi_WaitNamedPipe, METH_FASTCALL, _winapi_WaitNamedPipe__doc__},
 
 static PyObject *
 _winapi_WaitNamedPipe_impl(PyObject *module, LPCTSTR name, DWORD timeout);
@@ -795,7 +795,7 @@ PyDoc_STRVAR(_winapi_WaitForMultipleObjects__doc__,
 "\n");
 
 #define _WINAPI_WAITFORMULTIPLEOBJECTS_METHODDEF    \
-    {"WaitForMultipleObjects", (PyCFunction)_winapi_WaitForMultipleObjects, METH_FASTCALL, _winapi_WaitForMultipleObjects__doc__},
+    {"WaitForMultipleObjects", (PyCFunction)(void(*)(void))_winapi_WaitForMultipleObjects, METH_FASTCALL, _winapi_WaitForMultipleObjects__doc__},
 
 static PyObject *
 _winapi_WaitForMultipleObjects_impl(PyObject *module, PyObject *handle_seq,
@@ -830,7 +830,7 @@ PyDoc_STRVAR(_winapi_WaitForSingleObject__doc__,
 "in milliseconds.");
 
 #define _WINAPI_WAITFORSINGLEOBJECT_METHODDEF    \
-    {"WaitForSingleObject", (PyCFunction)_winapi_WaitForSingleObject, METH_FASTCALL, _winapi_WaitForSingleObject__doc__},
+    {"WaitForSingleObject", (PyCFunction)(void(*)(void))_winapi_WaitForSingleObject, METH_FASTCALL, _winapi_WaitForSingleObject__doc__},
 
 static long
 _winapi_WaitForSingleObject_impl(PyObject *module, HANDLE handle,
@@ -864,7 +864,7 @@ PyDoc_STRVAR(_winapi_WriteFile__doc__,
 "\n");
 
 #define _WINAPI_WRITEFILE_METHODDEF    \
-    {"WriteFile", (PyCFunction)_winapi_WriteFile, METH_FASTCALL|METH_KEYWORDS, _winapi_WriteFile__doc__},
+    {"WriteFile", (PyCFunction)(void(*)(void))_winapi_WriteFile, METH_FASTCALL|METH_KEYWORDS, _winapi_WriteFile__doc__},
 
 static PyObject *
 _winapi_WriteFile_impl(PyObject *module, HANDLE handle, PyObject *buffer,
@@ -914,7 +914,7 @@ PyDoc_STRVAR(_winapi_GetFileType__doc__,
 "\n");
 
 #define _WINAPI_GETFILETYPE_METHODDEF    \
-    {"GetFileType", (PyCFunction)_winapi_GetFileType, METH_FASTCALL|METH_KEYWORDS, _winapi_GetFileType__doc__},
+    {"GetFileType", (PyCFunction)(void(*)(void))_winapi_GetFileType, METH_FASTCALL|METH_KEYWORDS, _winapi_GetFileType__doc__},
 
 static DWORD
 _winapi_GetFileType_impl(PyObject *module, HANDLE handle);
@@ -941,4 +941,4 @@ _winapi_GetFileType(PyObject *module, PyObject *const *args, Py_ssize_t nargs, P
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=baaf3d379b91be0a input=a9049054013a1b77]*/
+/*[clinic end generated code: output=915dd640329de0c0 input=a9049054013a1b77]*/
diff --git a/Modules/clinic/arraymodule.c.h b/Modules/clinic/arraymodule.c.h
index b03a507..aa99388 100644
--- a/Modules/clinic/arraymodule.c.h
+++ b/Modules/clinic/arraymodule.c.h
@@ -65,7 +65,7 @@ PyDoc_STRVAR(array_array_pop__doc__,
 "i defaults to -1.");
 
 #define ARRAY_ARRAY_POP_METHODDEF    \
-    {"pop", (PyCFunction)array_array_pop, METH_FASTCALL, array_array_pop__doc__},
+    {"pop", (PyCFunction)(void(*)(void))array_array_pop, METH_FASTCALL, array_array_pop__doc__},
 
 static PyObject *
 array_array_pop_impl(arrayobject *self, Py_ssize_t i);
@@ -102,7 +102,7 @@ PyDoc_STRVAR(array_array_insert__doc__,
 "Insert a new item v into the array before position i.");
 
 #define ARRAY_ARRAY_INSERT_METHODDEF    \
-    {"insert", (PyCFunction)array_array_insert, METH_FASTCALL, array_array_insert__doc__},
+    {"insert", (PyCFunction)(void(*)(void))array_array_insert, METH_FASTCALL, array_array_insert__doc__},
 
 static PyObject *
 array_array_insert_impl(arrayobject *self, Py_ssize_t i, PyObject *v);
@@ -200,7 +200,7 @@ PyDoc_STRVAR(array_array_fromfile__doc__,
 "Read n objects from the file object f and append them to the end of the array.");
 
 #define ARRAY_ARRAY_FROMFILE_METHODDEF    \
-    {"fromfile", (PyCFunction)array_array_fromfile, METH_FASTCALL, array_array_fromfile__doc__},
+    {"fromfile", (PyCFunction)(void(*)(void))array_array_fromfile, METH_FASTCALL, array_array_fromfile__doc__},
 
 static PyObject *
 array_array_fromfile_impl(arrayobject *self, PyObject *f, Py_ssize_t n);
@@ -443,7 +443,7 @@ PyDoc_STRVAR(array__array_reconstructor__doc__,
 "Internal. Used for pickling support.");
 
 #define ARRAY__ARRAY_RECONSTRUCTOR_METHODDEF    \
-    {"_array_reconstructor", (PyCFunction)array__array_reconstructor, METH_FASTCALL, array__array_reconstructor__doc__},
+    {"_array_reconstructor", (PyCFunction)(void(*)(void))array__array_reconstructor, METH_FASTCALL, array__array_reconstructor__doc__},
 
 static PyObject *
 array__array_reconstructor_impl(PyObject *module, PyTypeObject *arraytype,
@@ -505,4 +505,4 @@ 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=1289bde2a095a712 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=3a4c6f3deb597bfd input=a9049054013a1b77]*/
diff --git a/Modules/clinic/audioop.c.h b/Modules/clinic/audioop.c.h
index cc8d818..1eae9aa 100644
--- a/Modules/clinic/audioop.c.h
+++ b/Modules/clinic/audioop.c.h
@@ -9,7 +9,7 @@ PyDoc_STRVAR(audioop_getsample__doc__,
 "Return the value of sample index from the fragment.");
 
 #define AUDIOOP_GETSAMPLE_METHODDEF    \
-    {"getsample", (PyCFunction)audioop_getsample, METH_FASTCALL, audioop_getsample__doc__},
+    {"getsample", (PyCFunction)(void(*)(void))audioop_getsample, METH_FASTCALL, audioop_getsample__doc__},
 
 static PyObject *
 audioop_getsample_impl(PyObject *module, Py_buffer *fragment, int width,
@@ -45,7 +45,7 @@ PyDoc_STRVAR(audioop_max__doc__,
 "Return the maximum of the absolute value of all samples in a fragment.");
 
 #define AUDIOOP_MAX_METHODDEF    \
-    {"max", (PyCFunction)audioop_max, METH_FASTCALL, audioop_max__doc__},
+    {"max", (PyCFunction)(void(*)(void))audioop_max, METH_FASTCALL, audioop_max__doc__},
 
 static PyObject *
 audioop_max_impl(PyObject *module, Py_buffer *fragment, int width);
@@ -79,7 +79,7 @@ PyDoc_STRVAR(audioop_minmax__doc__,
 "Return the minimum and maximum values of all samples in the sound fragment.");
 
 #define AUDIOOP_MINMAX_METHODDEF    \
-    {"minmax", (PyCFunction)audioop_minmax, METH_FASTCALL, audioop_minmax__doc__},
+    {"minmax", (PyCFunction)(void(*)(void))audioop_minmax, METH_FASTCALL, audioop_minmax__doc__},
 
 static PyObject *
 audioop_minmax_impl(PyObject *module, Py_buffer *fragment, int width);
@@ -113,7 +113,7 @@ PyDoc_STRVAR(audioop_avg__doc__,
 "Return the average over all samples in the fragment.");
 
 #define AUDIOOP_AVG_METHODDEF    \
-    {"avg", (PyCFunction)audioop_avg, METH_FASTCALL, audioop_avg__doc__},
+    {"avg", (PyCFunction)(void(*)(void))audioop_avg, METH_FASTCALL, audioop_avg__doc__},
 
 static PyObject *
 audioop_avg_impl(PyObject *module, Py_buffer *fragment, int width);
@@ -147,7 +147,7 @@ PyDoc_STRVAR(audioop_rms__doc__,
 "Return the root-mean-square of the fragment, i.e. sqrt(sum(S_i^2)/n).");
 
 #define AUDIOOP_RMS_METHODDEF    \
-    {"rms", (PyCFunction)audioop_rms, METH_FASTCALL, audioop_rms__doc__},
+    {"rms", (PyCFunction)(void(*)(void))audioop_rms, METH_FASTCALL, audioop_rms__doc__},
 
 static PyObject *
 audioop_rms_impl(PyObject *module, Py_buffer *fragment, int width);
@@ -181,7 +181,7 @@ PyDoc_STRVAR(audioop_findfit__doc__,
 "Try to match reference as well as possible to a portion of fragment.");
 
 #define AUDIOOP_FINDFIT_METHODDEF    \
-    {"findfit", (PyCFunction)audioop_findfit, METH_FASTCALL, audioop_findfit__doc__},
+    {"findfit", (PyCFunction)(void(*)(void))audioop_findfit, METH_FASTCALL, audioop_findfit__doc__},
 
 static PyObject *
 audioop_findfit_impl(PyObject *module, Py_buffer *fragment,
@@ -220,7 +220,7 @@ PyDoc_STRVAR(audioop_findfactor__doc__,
 "Return a factor F such that rms(add(fragment, mul(reference, -F))) is minimal.");
 
 #define AUDIOOP_FINDFACTOR_METHODDEF    \
-    {"findfactor", (PyCFunction)audioop_findfactor, METH_FASTCALL, audioop_findfactor__doc__},
+    {"findfactor", (PyCFunction)(void(*)(void))audioop_findfactor, METH_FASTCALL, audioop_findfactor__doc__},
 
 static PyObject *
 audioop_findfactor_impl(PyObject *module, Py_buffer *fragment,
@@ -259,7 +259,7 @@ PyDoc_STRVAR(audioop_findmax__doc__,
 "Search fragment for a slice of specified number of samples with maximum energy.");
 
 #define AUDIOOP_FINDMAX_METHODDEF    \
-    {"findmax", (PyCFunction)audioop_findmax, METH_FASTCALL, audioop_findmax__doc__},
+    {"findmax", (PyCFunction)(void(*)(void))audioop_findmax, METH_FASTCALL, audioop_findmax__doc__},
 
 static PyObject *
 audioop_findmax_impl(PyObject *module, Py_buffer *fragment,
@@ -294,7 +294,7 @@ PyDoc_STRVAR(audioop_avgpp__doc__,
 "Return the average peak-peak value over all samples in the fragment.");
 
 #define AUDIOOP_AVGPP_METHODDEF    \
-    {"avgpp", (PyCFunction)audioop_avgpp, METH_FASTCALL, audioop_avgpp__doc__},
+    {"avgpp", (PyCFunction)(void(*)(void))audioop_avgpp, METH_FASTCALL, audioop_avgpp__doc__},
 
 static PyObject *
 audioop_avgpp_impl(PyObject *module, Py_buffer *fragment, int width);
@@ -328,7 +328,7 @@ PyDoc_STRVAR(audioop_maxpp__doc__,
 "Return the maximum peak-peak value in the sound fragment.");
 
 #define AUDIOOP_MAXPP_METHODDEF    \
-    {"maxpp", (PyCFunction)audioop_maxpp, METH_FASTCALL, audioop_maxpp__doc__},
+    {"maxpp", (PyCFunction)(void(*)(void))audioop_maxpp, METH_FASTCALL, audioop_maxpp__doc__},
 
 static PyObject *
 audioop_maxpp_impl(PyObject *module, Py_buffer *fragment, int width);
@@ -362,7 +362,7 @@ PyDoc_STRVAR(audioop_cross__doc__,
 "Return the number of zero crossings in the fragment passed as an argument.");
 
 #define AUDIOOP_CROSS_METHODDEF    \
-    {"cross", (PyCFunction)audioop_cross, METH_FASTCALL, audioop_cross__doc__},
+    {"cross", (PyCFunction)(void(*)(void))audioop_cross, METH_FASTCALL, audioop_cross__doc__},
 
 static PyObject *
 audioop_cross_impl(PyObject *module, Py_buffer *fragment, int width);
@@ -396,7 +396,7 @@ PyDoc_STRVAR(audioop_mul__doc__,
 "Return a fragment that has all samples in the original fragment multiplied by the floating-point value factor.");
 
 #define AUDIOOP_MUL_METHODDEF    \
-    {"mul", (PyCFunction)audioop_mul, METH_FASTCALL, audioop_mul__doc__},
+    {"mul", (PyCFunction)(void(*)(void))audioop_mul, METH_FASTCALL, audioop_mul__doc__},
 
 static PyObject *
 audioop_mul_impl(PyObject *module, Py_buffer *fragment, int width,
@@ -432,7 +432,7 @@ PyDoc_STRVAR(audioop_tomono__doc__,
 "Convert a stereo fragment to a mono fragment.");
 
 #define AUDIOOP_TOMONO_METHODDEF    \
-    {"tomono", (PyCFunction)audioop_tomono, METH_FASTCALL, audioop_tomono__doc__},
+    {"tomono", (PyCFunction)(void(*)(void))audioop_tomono, METH_FASTCALL, audioop_tomono__doc__},
 
 static PyObject *
 audioop_tomono_impl(PyObject *module, Py_buffer *fragment, int width,
@@ -469,7 +469,7 @@ PyDoc_STRVAR(audioop_tostereo__doc__,
 "Generate a stereo fragment from a mono fragment.");
 
 #define AUDIOOP_TOSTEREO_METHODDEF    \
-    {"tostereo", (PyCFunction)audioop_tostereo, METH_FASTCALL, audioop_tostereo__doc__},
+    {"tostereo", (PyCFunction)(void(*)(void))audioop_tostereo, METH_FASTCALL, audioop_tostereo__doc__},
 
 static PyObject *
 audioop_tostereo_impl(PyObject *module, Py_buffer *fragment, int width,
@@ -506,7 +506,7 @@ PyDoc_STRVAR(audioop_add__doc__,
 "Return a fragment which is the addition of the two samples passed as parameters.");
 
 #define AUDIOOP_ADD_METHODDEF    \
-    {"add", (PyCFunction)audioop_add, METH_FASTCALL, audioop_add__doc__},
+    {"add", (PyCFunction)(void(*)(void))audioop_add, METH_FASTCALL, audioop_add__doc__},
 
 static PyObject *
 audioop_add_impl(PyObject *module, Py_buffer *fragment1,
@@ -546,7 +546,7 @@ PyDoc_STRVAR(audioop_bias__doc__,
 "Return a fragment that is the original fragment with a bias added to each sample.");
 
 #define AUDIOOP_BIAS_METHODDEF    \
-    {"bias", (PyCFunction)audioop_bias, METH_FASTCALL, audioop_bias__doc__},
+    {"bias", (PyCFunction)(void(*)(void))audioop_bias, METH_FASTCALL, audioop_bias__doc__},
 
 static PyObject *
 audioop_bias_impl(PyObject *module, Py_buffer *fragment, int width, int bias);
@@ -581,7 +581,7 @@ PyDoc_STRVAR(audioop_reverse__doc__,
 "Reverse the samples in a fragment and returns the modified fragment.");
 
 #define AUDIOOP_REVERSE_METHODDEF    \
-    {"reverse", (PyCFunction)audioop_reverse, METH_FASTCALL, audioop_reverse__doc__},
+    {"reverse", (PyCFunction)(void(*)(void))audioop_reverse, METH_FASTCALL, audioop_reverse__doc__},
 
 static PyObject *
 audioop_reverse_impl(PyObject *module, Py_buffer *fragment, int width);
@@ -615,7 +615,7 @@ PyDoc_STRVAR(audioop_byteswap__doc__,
 "Convert big-endian samples to little-endian and vice versa.");
 
 #define AUDIOOP_BYTESWAP_METHODDEF    \
-    {"byteswap", (PyCFunction)audioop_byteswap, METH_FASTCALL, audioop_byteswap__doc__},
+    {"byteswap", (PyCFunction)(void(*)(void))audioop_byteswap, METH_FASTCALL, audioop_byteswap__doc__},
 
 static PyObject *
 audioop_byteswap_impl(PyObject *module, Py_buffer *fragment, int width);
@@ -649,7 +649,7 @@ PyDoc_STRVAR(audioop_lin2lin__doc__,
 "Convert samples between 1-, 2-, 3- and 4-byte formats.");
 
 #define AUDIOOP_LIN2LIN_METHODDEF    \
-    {"lin2lin", (PyCFunction)audioop_lin2lin, METH_FASTCALL, audioop_lin2lin__doc__},
+    {"lin2lin", (PyCFunction)(void(*)(void))audioop_lin2lin, METH_FASTCALL, audioop_lin2lin__doc__},
 
 static PyObject *
 audioop_lin2lin_impl(PyObject *module, Py_buffer *fragment, int width,
@@ -686,7 +686,7 @@ PyDoc_STRVAR(audioop_ratecv__doc__,
 "Convert the frame rate of the input fragment.");
 
 #define AUDIOOP_RATECV_METHODDEF    \
-    {"ratecv", (PyCFunction)audioop_ratecv, METH_FASTCALL, audioop_ratecv__doc__},
+    {"ratecv", (PyCFunction)(void(*)(void))audioop_ratecv, METH_FASTCALL, audioop_ratecv__doc__},
 
 static PyObject *
 audioop_ratecv_impl(PyObject *module, Py_buffer *fragment, int width,
@@ -728,7 +728,7 @@ PyDoc_STRVAR(audioop_lin2ulaw__doc__,
 "Convert samples in the audio fragment to u-LAW encoding.");
 
 #define AUDIOOP_LIN2ULAW_METHODDEF    \
-    {"lin2ulaw", (PyCFunction)audioop_lin2ulaw, METH_FASTCALL, audioop_lin2ulaw__doc__},
+    {"lin2ulaw", (PyCFunction)(void(*)(void))audioop_lin2ulaw, METH_FASTCALL, audioop_lin2ulaw__doc__},
 
 static PyObject *
 audioop_lin2ulaw_impl(PyObject *module, Py_buffer *fragment, int width);
@@ -762,7 +762,7 @@ PyDoc_STRVAR(audioop_ulaw2lin__doc__,
 "Convert sound fragments in u-LAW encoding to linearly encoded sound fragments.");
 
 #define AUDIOOP_ULAW2LIN_METHODDEF    \
-    {"ulaw2lin", (PyCFunction)audioop_ulaw2lin, METH_FASTCALL, audioop_ulaw2lin__doc__},
+    {"ulaw2lin", (PyCFunction)(void(*)(void))audioop_ulaw2lin, METH_FASTCALL, audioop_ulaw2lin__doc__},
 
 static PyObject *
 audioop_ulaw2lin_impl(PyObject *module, Py_buffer *fragment, int width);
@@ -796,7 +796,7 @@ PyDoc_STRVAR(audioop_lin2alaw__doc__,
 "Convert samples in the audio fragment to a-LAW encoding.");
 
 #define AUDIOOP_LIN2ALAW_METHODDEF    \
-    {"lin2alaw", (PyCFunction)audioop_lin2alaw, METH_FASTCALL, audioop_lin2alaw__doc__},
+    {"lin2alaw", (PyCFunction)(void(*)(void))audioop_lin2alaw, METH_FASTCALL, audioop_lin2alaw__doc__},
 
 static PyObject *
 audioop_lin2alaw_impl(PyObject *module, Py_buffer *fragment, int width);
@@ -830,7 +830,7 @@ PyDoc_STRVAR(audioop_alaw2lin__doc__,
 "Convert sound fragments in a-LAW encoding to linearly encoded sound fragments.");
 
 #define AUDIOOP_ALAW2LIN_METHODDEF    \
-    {"alaw2lin", (PyCFunction)audioop_alaw2lin, METH_FASTCALL, audioop_alaw2lin__doc__},
+    {"alaw2lin", (PyCFunction)(void(*)(void))audioop_alaw2lin, METH_FASTCALL, audioop_alaw2lin__doc__},
 
 static PyObject *
 audioop_alaw2lin_impl(PyObject *module, Py_buffer *fragment, int width);
@@ -864,7 +864,7 @@ PyDoc_STRVAR(audioop_lin2adpcm__doc__,
 "Convert samples to 4 bit Intel/DVI ADPCM encoding.");
 
 #define AUDIOOP_LIN2ADPCM_METHODDEF    \
-    {"lin2adpcm", (PyCFunction)audioop_lin2adpcm, METH_FASTCALL, audioop_lin2adpcm__doc__},
+    {"lin2adpcm", (PyCFunction)(void(*)(void))audioop_lin2adpcm, METH_FASTCALL, audioop_lin2adpcm__doc__},
 
 static PyObject *
 audioop_lin2adpcm_impl(PyObject *module, Py_buffer *fragment, int width,
@@ -900,7 +900,7 @@ PyDoc_STRVAR(audioop_adpcm2lin__doc__,
 "Decode an Intel/DVI ADPCM coded fragment to a linear fragment.");
 
 #define AUDIOOP_ADPCM2LIN_METHODDEF    \
-    {"adpcm2lin", (PyCFunction)audioop_adpcm2lin, METH_FASTCALL, audioop_adpcm2lin__doc__},
+    {"adpcm2lin", (PyCFunction)(void(*)(void))audioop_adpcm2lin, METH_FASTCALL, audioop_adpcm2lin__doc__},
 
 static PyObject *
 audioop_adpcm2lin_impl(PyObject *module, Py_buffer *fragment, int width,
@@ -928,4 +928,4 @@ exit:
 
     return return_value;
 }
-/*[clinic end generated code: output=2f88b8827ee0aa9b input=a9049054013a1b77]*/
+/*[clinic end generated code: output=d197b1559196a48a input=a9049054013a1b77]*/
diff --git a/Modules/clinic/binascii.c.h b/Modules/clinic/binascii.c.h
index 8099cbd..07ab24c 100644
--- a/Modules/clinic/binascii.c.h
+++ b/Modules/clinic/binascii.c.h
@@ -40,7 +40,7 @@ PyDoc_STRVAR(binascii_b2a_uu__doc__,
 "Uuencode line of data.");
 
 #define BINASCII_B2A_UU_METHODDEF    \
-    {"b2a_uu", (PyCFunction)binascii_b2a_uu, METH_FASTCALL|METH_KEYWORDS, binascii_b2a_uu__doc__},
+    {"b2a_uu", (PyCFunction)(void(*)(void))binascii_b2a_uu, METH_FASTCALL|METH_KEYWORDS, binascii_b2a_uu__doc__},
 
 static PyObject *
 binascii_b2a_uu_impl(PyObject *module, Py_buffer *data, int backtick);
@@ -107,7 +107,7 @@ PyDoc_STRVAR(binascii_b2a_base64__doc__,
 "Base64-code line of data.");
 
 #define BINASCII_B2A_BASE64_METHODDEF    \
-    {"b2a_base64", (PyCFunction)binascii_b2a_base64, METH_FASTCALL|METH_KEYWORDS, binascii_b2a_base64__doc__},
+    {"b2a_base64", (PyCFunction)(void(*)(void))binascii_b2a_base64, METH_FASTCALL|METH_KEYWORDS, binascii_b2a_base64__doc__},
 
 static PyObject *
 binascii_b2a_base64_impl(PyObject *module, Py_buffer *data, int newline);
@@ -270,7 +270,7 @@ PyDoc_STRVAR(binascii_crc_hqx__doc__,
 "Compute CRC-CCITT incrementally.");
 
 #define BINASCII_CRC_HQX_METHODDEF    \
-    {"crc_hqx", (PyCFunction)binascii_crc_hqx, METH_FASTCALL, binascii_crc_hqx__doc__},
+    {"crc_hqx", (PyCFunction)(void(*)(void))binascii_crc_hqx, METH_FASTCALL, binascii_crc_hqx__doc__},
 
 static unsigned int
 binascii_crc_hqx_impl(PyObject *module, Py_buffer *data, unsigned int crc);
@@ -309,7 +309,7 @@ PyDoc_STRVAR(binascii_crc32__doc__,
 "Compute CRC-32 incrementally.");
 
 #define BINASCII_CRC32_METHODDEF    \
-    {"crc32", (PyCFunction)binascii_crc32, METH_FASTCALL, binascii_crc32__doc__},
+    {"crc32", (PyCFunction)(void(*)(void))binascii_crc32, METH_FASTCALL, binascii_crc32__doc__},
 
 static unsigned int
 binascii_crc32_impl(PyObject *module, Py_buffer *data, unsigned int crc);
@@ -484,7 +484,7 @@ PyDoc_STRVAR(binascii_a2b_qp__doc__,
 "Decode a string of qp-encoded data.");
 
 #define BINASCII_A2B_QP_METHODDEF    \
-    {"a2b_qp", (PyCFunction)binascii_a2b_qp, METH_FASTCALL|METH_KEYWORDS, binascii_a2b_qp__doc__},
+    {"a2b_qp", (PyCFunction)(void(*)(void))binascii_a2b_qp, METH_FASTCALL|METH_KEYWORDS, binascii_a2b_qp__doc__},
 
 static PyObject *
 binascii_a2b_qp_impl(PyObject *module, Py_buffer *data, int header);
@@ -523,7 +523,7 @@ PyDoc_STRVAR(binascii_b2a_qp__doc__,
 "are both encoded.  When quotetabs is set, space and tabs are encoded.");
 
 #define BINASCII_B2A_QP_METHODDEF    \
-    {"b2a_qp", (PyCFunction)binascii_b2a_qp, METH_FASTCALL|METH_KEYWORDS, binascii_b2a_qp__doc__},
+    {"b2a_qp", (PyCFunction)(void(*)(void))binascii_b2a_qp, METH_FASTCALL|METH_KEYWORDS, binascii_b2a_qp__doc__},
 
 static PyObject *
 binascii_b2a_qp_impl(PyObject *module, Py_buffer *data, int quotetabs,
@@ -554,4 +554,4 @@ exit:
 
     return return_value;
 }
-/*[clinic end generated code: output=815f1c453fd6568f input=a9049054013a1b77]*/
+/*[clinic end generated code: output=3f45e15ce8b563b7 input=a9049054013a1b77]*/
diff --git a/Modules/clinic/cmathmodule.c.h b/Modules/clinic/cmathmodule.c.h
index 9b3c62e..021c87d 100644
--- a/Modules/clinic/cmathmodule.c.h
+++ b/Modules/clinic/cmathmodule.c.h
@@ -641,7 +641,7 @@ PyDoc_STRVAR(cmath_log__doc__,
 "If the base not specified, returns the natural logarithm (base e) of z.");
 
 #define CMATH_LOG_METHODDEF    \
-    {"log", (PyCFunction)cmath_log, METH_FASTCALL, cmath_log__doc__},
+    {"log", (PyCFunction)(void(*)(void))cmath_log, METH_FASTCALL, cmath_log__doc__},
 
 static PyObject *
 cmath_log_impl(PyObject *module, Py_complex x, PyObject *y_obj);
@@ -726,7 +726,7 @@ PyDoc_STRVAR(cmath_rect__doc__,
 "Convert from polar coordinates to rectangular coordinates.");
 
 #define CMATH_RECT_METHODDEF    \
-    {"rect", (PyCFunction)cmath_rect, METH_FASTCALL, cmath_rect__doc__},
+    {"rect", (PyCFunction)(void(*)(void))cmath_rect, METH_FASTCALL, cmath_rect__doc__},
 
 static PyObject *
 cmath_rect_impl(PyObject *module, double r, double phi);
@@ -851,7 +851,7 @@ PyDoc_STRVAR(cmath_isclose__doc__,
 "not close to anything, even itself. inf and -inf are only close to themselves.");
 
 #define CMATH_ISCLOSE_METHODDEF    \
-    {"isclose", (PyCFunction)cmath_isclose, METH_FASTCALL|METH_KEYWORDS, cmath_isclose__doc__},
+    {"isclose", (PyCFunction)(void(*)(void))cmath_isclose, METH_FASTCALL|METH_KEYWORDS, cmath_isclose__doc__},
 
 static int
 cmath_isclose_impl(PyObject *module, Py_complex a, Py_complex b,
@@ -882,4 +882,4 @@ cmath_isclose(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObjec
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=dd93c3a6aeb42ebb input=a9049054013a1b77]*/
+/*[clinic end generated code: output=17f6f65a229b1ef9 input=a9049054013a1b77]*/
diff --git a/Modules/clinic/fcntlmodule.c.h b/Modules/clinic/fcntlmodule.c.h
index f61c526..7b5a280 100644
--- a/Modules/clinic/fcntlmodule.c.h
+++ b/Modules/clinic/fcntlmodule.c.h
@@ -19,7 +19,7 @@ PyDoc_STRVAR(fcntl_fcntl__doc__,
 "corresponding to the return value of the fcntl call in the C code.");
 
 #define FCNTL_FCNTL_METHODDEF    \
-    {"fcntl", (PyCFunction)fcntl_fcntl, METH_FASTCALL, fcntl_fcntl__doc__},
+    {"fcntl", (PyCFunction)(void(*)(void))fcntl_fcntl, METH_FASTCALL, fcntl_fcntl__doc__},
 
 static PyObject *
 fcntl_fcntl_impl(PyObject *module, int fd, int code, PyObject *arg);
@@ -76,7 +76,7 @@ PyDoc_STRVAR(fcntl_ioctl__doc__,
 "code.");
 
 #define FCNTL_IOCTL_METHODDEF    \
-    {"ioctl", (PyCFunction)fcntl_ioctl, METH_FASTCALL, fcntl_ioctl__doc__},
+    {"ioctl", (PyCFunction)(void(*)(void))fcntl_ioctl, METH_FASTCALL, fcntl_ioctl__doc__},
 
 static PyObject *
 fcntl_ioctl_impl(PyObject *module, int fd, unsigned int code,
@@ -111,7 +111,7 @@ PyDoc_STRVAR(fcntl_flock__doc__,
 "function is emulated using fcntl()).");
 
 #define FCNTL_FLOCK_METHODDEF    \
-    {"flock", (PyCFunction)fcntl_flock, METH_FASTCALL, fcntl_flock__doc__},
+    {"flock", (PyCFunction)(void(*)(void))fcntl_flock, METH_FASTCALL, fcntl_flock__doc__},
 
 static PyObject *
 fcntl_flock_impl(PyObject *module, int fd, int code);
@@ -161,7 +161,7 @@ PyDoc_STRVAR(fcntl_lockf__doc__,
 "    2 - relative to the end of the file (SEEK_END)");
 
 #define FCNTL_LOCKF_METHODDEF    \
-    {"lockf", (PyCFunction)fcntl_lockf, METH_FASTCALL, fcntl_lockf__doc__},
+    {"lockf", (PyCFunction)(void(*)(void))fcntl_lockf, METH_FASTCALL, fcntl_lockf__doc__},
 
 static PyObject *
 fcntl_lockf_impl(PyObject *module, int fd, int code, PyObject *lenobj,
@@ -186,4 +186,4 @@ fcntl_lockf(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=2f6e70ae67ec8ac9 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=fc1a781750750a14 input=a9049054013a1b77]*/
diff --git a/Modules/clinic/gcmodule.c.h b/Modules/clinic/gcmodule.c.h
index 0330c81..1c4be66 100644
--- a/Modules/clinic/gcmodule.c.h
+++ b/Modules/clinic/gcmodule.c.h
@@ -79,7 +79,7 @@ PyDoc_STRVAR(gc_collect__doc__,
 "The number of unreachable objects is returned.");
 
 #define GC_COLLECT_METHODDEF    \
-    {"collect", (PyCFunction)gc_collect, METH_FASTCALL|METH_KEYWORDS, gc_collect__doc__},
+    {"collect", (PyCFunction)(void(*)(void))gc_collect, METH_FASTCALL|METH_KEYWORDS, gc_collect__doc__},
 
 static Py_ssize_t
 gc_collect_impl(PyObject *module, int generation);
@@ -325,4 +325,4 @@ gc_get_freeze_count(PyObject *module, PyObject *Py_UNUSED(ignored))
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=21dc9270b10b7891 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=ba67a1ab58780485 input=a9049054013a1b77]*/
diff --git a/Modules/clinic/grpmodule.c.h b/Modules/clinic/grpmodule.c.h
index bb51b8a..c2e54c9 100644
--- a/Modules/clinic/grpmodule.c.h
+++ b/Modules/clinic/grpmodule.c.h
@@ -11,7 +11,7 @@ PyDoc_STRVAR(grp_getgrgid__doc__,
 "If id is not valid, raise KeyError.");
 
 #define GRP_GETGRGID_METHODDEF    \
-    {"getgrgid", (PyCFunction)grp_getgrgid, METH_FASTCALL|METH_KEYWORDS, grp_getgrgid__doc__},
+    {"getgrgid", (PyCFunction)(void(*)(void))grp_getgrgid, METH_FASTCALL|METH_KEYWORDS, grp_getgrgid__doc__},
 
 static PyObject *
 grp_getgrgid_impl(PyObject *module, PyObject *id);
@@ -43,7 +43,7 @@ PyDoc_STRVAR(grp_getgrnam__doc__,
 "If name is not valid, raise KeyError.");
 
 #define GRP_GETGRNAM_METHODDEF    \
-    {"getgrnam", (PyCFunction)grp_getgrnam, METH_FASTCALL|METH_KEYWORDS, grp_getgrnam__doc__},
+    {"getgrnam", (PyCFunction)(void(*)(void))grp_getgrnam, METH_FASTCALL|METH_KEYWORDS, grp_getgrnam__doc__},
 
 static PyObject *
 grp_getgrnam_impl(PyObject *module, PyObject *name);
@@ -86,4 +86,4 @@ grp_getgrall(PyObject *module, PyObject *Py_UNUSED(ignored))
 {
     return grp_getgrall_impl(module);
 }
-/*[clinic end generated code: output=0ccba09e8ec14c81 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=ab10233f6015bc0a input=a9049054013a1b77]*/
diff --git a/Modules/clinic/itertoolsmodule.c.h b/Modules/clinic/itertoolsmodule.c.h
index 476adc1..b7d70a3 100644
--- a/Modules/clinic/itertoolsmodule.c.h
+++ b/Modules/clinic/itertoolsmodule.c.h
@@ -131,7 +131,7 @@ PyDoc_STRVAR(itertools_tee__doc__,
 "Returns a tuple of n independent iterators.");
 
 #define ITERTOOLS_TEE_METHODDEF    \
-    {"tee", (PyCFunction)itertools_tee, METH_FASTCALL, itertools_tee__doc__},
+    {"tee", (PyCFunction)(void(*)(void))itertools_tee, METH_FASTCALL, itertools_tee__doc__},
 
 static PyObject *
 itertools_tee_impl(PyObject *module, PyObject *iterable, Py_ssize_t n);
@@ -510,4 +510,4 @@ itertools_count(PyTypeObject *type, PyObject *args, PyObject *kwargs)
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=c8c47b766deeffc3 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=916251f891fa84b9 input=a9049054013a1b77]*/
diff --git a/Modules/clinic/mathmodule.c.h b/Modules/clinic/mathmodule.c.h
index b40a227..c8d8029 100644
--- a/Modules/clinic/mathmodule.c.h
+++ b/Modules/clinic/mathmodule.c.h
@@ -9,7 +9,7 @@ PyDoc_STRVAR(math_gcd__doc__,
 "greatest common divisor of x and y");
 
 #define MATH_GCD_METHODDEF    \
-    {"gcd", (PyCFunction)math_gcd, METH_FASTCALL, math_gcd__doc__},
+    {"gcd", (PyCFunction)(void(*)(void))math_gcd, METH_FASTCALL, math_gcd__doc__},
 
 static PyObject *
 math_gcd_impl(PyObject *module, PyObject *a, PyObject *b);
@@ -126,7 +126,7 @@ PyDoc_STRVAR(math_ldexp__doc__,
 "This is essentially the inverse of frexp().");
 
 #define MATH_LDEXP_METHODDEF    \
-    {"ldexp", (PyCFunction)math_ldexp, METH_FASTCALL, math_ldexp__doc__},
+    {"ldexp", (PyCFunction)(void(*)(void))math_ldexp, METH_FASTCALL, math_ldexp__doc__},
 
 static PyObject *
 math_ldexp_impl(PyObject *module, double x, PyObject *i);
@@ -247,7 +247,7 @@ PyDoc_STRVAR(math_fmod__doc__,
 "x % y may differ.");
 
 #define MATH_FMOD_METHODDEF    \
-    {"fmod", (PyCFunction)math_fmod, METH_FASTCALL, math_fmod__doc__},
+    {"fmod", (PyCFunction)(void(*)(void))math_fmod, METH_FASTCALL, math_fmod__doc__},
 
 static PyObject *
 math_fmod_impl(PyObject *module, double x, double y);
@@ -282,7 +282,7 @@ PyDoc_STRVAR(math_dist__doc__,
 "    sqrt(sum((px - qx) ** 2.0 for px, qx in zip(p, q)))");
 
 #define MATH_DIST_METHODDEF    \
-    {"dist", (PyCFunction)math_dist, METH_FASTCALL, math_dist__doc__},
+    {"dist", (PyCFunction)(void(*)(void))math_dist, METH_FASTCALL, math_dist__doc__},
 
 static PyObject *
 math_dist_impl(PyObject *module, PyObject *p, PyObject *q);
@@ -312,7 +312,7 @@ PyDoc_STRVAR(math_pow__doc__,
 "Return x**y (x to the power of y).");
 
 #define MATH_POW_METHODDEF    \
-    {"pow", (PyCFunction)math_pow, METH_FASTCALL, math_pow__doc__},
+    {"pow", (PyCFunction)(void(*)(void))math_pow, METH_FASTCALL, math_pow__doc__},
 
 static PyObject *
 math_pow_impl(PyObject *module, double x, double y);
@@ -492,7 +492,7 @@ PyDoc_STRVAR(math_isclose__doc__,
 "only close to themselves.");
 
 #define MATH_ISCLOSE_METHODDEF    \
-    {"isclose", (PyCFunction)math_isclose, METH_FASTCALL|METH_KEYWORDS, math_isclose__doc__},
+    {"isclose", (PyCFunction)(void(*)(void))math_isclose, METH_FASTCALL|METH_KEYWORDS, math_isclose__doc__},
 
 static int
 math_isclose_impl(PyObject *module, double a, double b, double rel_tol,
@@ -523,4 +523,4 @@ math_isclose(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=239c51a5acefbafb input=a9049054013a1b77]*/
+/*[clinic end generated code: output=8b1709a71e5fb855 input=a9049054013a1b77]*/
diff --git a/Modules/clinic/md5module.c.h b/Modules/clinic/md5module.c.h
index fa1a0d6..67cb48c 100644
--- a/Modules/clinic/md5module.c.h
+++ b/Modules/clinic/md5module.c.h
@@ -72,7 +72,7 @@ PyDoc_STRVAR(_md5_md5__doc__,
 "Return a new MD5 hash object; optionally initialized with a string.");
 
 #define _MD5_MD5_METHODDEF    \
-    {"md5", (PyCFunction)_md5_md5, METH_FASTCALL|METH_KEYWORDS, _md5_md5__doc__},
+    {"md5", (PyCFunction)(void(*)(void))_md5_md5, METH_FASTCALL|METH_KEYWORDS, _md5_md5__doc__},
 
 static PyObject *
 _md5_md5_impl(PyObject *module, PyObject *string);
@@ -94,4 +94,4 @@ _md5_md5(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kw
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=72aa003c308e26cf input=a9049054013a1b77]*/
+/*[clinic end generated code: output=83cb1aef575f13bc input=a9049054013a1b77]*/
diff --git a/Modules/clinic/posixmodule.c.h b/Modules/clinic/posixmodule.c.h
index 56010f4..8069070 100644
--- a/Modules/clinic/posixmodule.c.h
+++ b/Modules/clinic/posixmodule.c.h
@@ -28,7 +28,7 @@ PyDoc_STRVAR(os_stat__doc__,
 "  an open file descriptor.");
 
 #define OS_STAT_METHODDEF    \
-    {"stat", (PyCFunction)os_stat, METH_FASTCALL|METH_KEYWORDS, os_stat__doc__},
+    {"stat", (PyCFunction)(void(*)(void))os_stat, METH_FASTCALL|METH_KEYWORDS, os_stat__doc__},
 
 static PyObject *
 os_stat_impl(PyObject *module, path_t *path, int dir_fd, int follow_symlinks);
@@ -66,7 +66,7 @@ PyDoc_STRVAR(os_lstat__doc__,
 "Equivalent to stat(path, follow_symlinks=False).");
 
 #define OS_LSTAT_METHODDEF    \
-    {"lstat", (PyCFunction)os_lstat, METH_FASTCALL|METH_KEYWORDS, os_lstat__doc__},
+    {"lstat", (PyCFunction)(void(*)(void))os_lstat, METH_FASTCALL|METH_KEYWORDS, os_lstat__doc__},
 
 static PyObject *
 os_lstat_impl(PyObject *module, path_t *path, int dir_fd);
@@ -126,7 +126,7 @@ PyDoc_STRVAR(os_access__doc__,
 "  has the specified access to the path.");
 
 #define OS_ACCESS_METHODDEF    \
-    {"access", (PyCFunction)os_access, METH_FASTCALL|METH_KEYWORDS, os_access__doc__},
+    {"access", (PyCFunction)(void(*)(void))os_access, METH_FASTCALL|METH_KEYWORDS, os_access__doc__},
 
 static int
 os_access_impl(PyObject *module, path_t *path, int mode, int dir_fd,
@@ -234,7 +234,7 @@ PyDoc_STRVAR(os_chdir__doc__,
 "  If this functionality is unavailable, using it raises an exception.");
 
 #define OS_CHDIR_METHODDEF    \
-    {"chdir", (PyCFunction)os_chdir, METH_FASTCALL|METH_KEYWORDS, os_chdir__doc__},
+    {"chdir", (PyCFunction)(void(*)(void))os_chdir, METH_FASTCALL|METH_KEYWORDS, os_chdir__doc__},
 
 static PyObject *
 os_chdir_impl(PyObject *module, path_t *path);
@@ -272,7 +272,7 @@ PyDoc_STRVAR(os_fchdir__doc__,
 "Equivalent to os.chdir(fd).");
 
 #define OS_FCHDIR_METHODDEF    \
-    {"fchdir", (PyCFunction)os_fchdir, METH_FASTCALL|METH_KEYWORDS, os_fchdir__doc__},
+    {"fchdir", (PyCFunction)(void(*)(void))os_fchdir, METH_FASTCALL|METH_KEYWORDS, os_fchdir__doc__},
 
 static PyObject *
 os_fchdir_impl(PyObject *module, int fd);
@@ -324,7 +324,7 @@ PyDoc_STRVAR(os_chmod__doc__,
 "  If they are unavailable, using them will raise a NotImplementedError.");
 
 #define OS_CHMOD_METHODDEF    \
-    {"chmod", (PyCFunction)os_chmod, METH_FASTCALL|METH_KEYWORDS, os_chmod__doc__},
+    {"chmod", (PyCFunction)(void(*)(void))os_chmod, METH_FASTCALL|METH_KEYWORDS, os_chmod__doc__},
 
 static PyObject *
 os_chmod_impl(PyObject *module, path_t *path, int mode, int dir_fd,
@@ -365,7 +365,7 @@ PyDoc_STRVAR(os_fchmod__doc__,
 "Equivalent to os.chmod(fd, mode).");
 
 #define OS_FCHMOD_METHODDEF    \
-    {"fchmod", (PyCFunction)os_fchmod, METH_FASTCALL|METH_KEYWORDS, os_fchmod__doc__},
+    {"fchmod", (PyCFunction)(void(*)(void))os_fchmod, METH_FASTCALL|METH_KEYWORDS, os_fchmod__doc__},
 
 static PyObject *
 os_fchmod_impl(PyObject *module, int fd, int mode);
@@ -403,7 +403,7 @@ PyDoc_STRVAR(os_lchmod__doc__,
 "Equivalent to chmod(path, mode, follow_symlinks=False).\"");
 
 #define OS_LCHMOD_METHODDEF    \
-    {"lchmod", (PyCFunction)os_lchmod, METH_FASTCALL|METH_KEYWORDS, os_lchmod__doc__},
+    {"lchmod", (PyCFunction)(void(*)(void))os_lchmod, METH_FASTCALL|METH_KEYWORDS, os_lchmod__doc__},
 
 static PyObject *
 os_lchmod_impl(PyObject *module, path_t *path, int mode);
@@ -447,7 +447,7 @@ PyDoc_STRVAR(os_chflags__doc__,
 "unavailable, using it will raise a NotImplementedError.");
 
 #define OS_CHFLAGS_METHODDEF    \
-    {"chflags", (PyCFunction)os_chflags, METH_FASTCALL|METH_KEYWORDS, os_chflags__doc__},
+    {"chflags", (PyCFunction)(void(*)(void))os_chflags, METH_FASTCALL|METH_KEYWORDS, os_chflags__doc__},
 
 static PyObject *
 os_chflags_impl(PyObject *module, path_t *path, unsigned long flags,
@@ -490,7 +490,7 @@ PyDoc_STRVAR(os_lchflags__doc__,
 "Equivalent to chflags(path, flags, follow_symlinks=False).");
 
 #define OS_LCHFLAGS_METHODDEF    \
-    {"lchflags", (PyCFunction)os_lchflags, METH_FASTCALL|METH_KEYWORDS, os_lchflags__doc__},
+    {"lchflags", (PyCFunction)(void(*)(void))os_lchflags, METH_FASTCALL|METH_KEYWORDS, os_lchflags__doc__},
 
 static PyObject *
 os_lchflags_impl(PyObject *module, path_t *path, unsigned long flags);
@@ -528,7 +528,7 @@ PyDoc_STRVAR(os_chroot__doc__,
 "Change root directory to path.");
 
 #define OS_CHROOT_METHODDEF    \
-    {"chroot", (PyCFunction)os_chroot, METH_FASTCALL|METH_KEYWORDS, os_chroot__doc__},
+    {"chroot", (PyCFunction)(void(*)(void))os_chroot, METH_FASTCALL|METH_KEYWORDS, os_chroot__doc__},
 
 static PyObject *
 os_chroot_impl(PyObject *module, path_t *path);
@@ -565,7 +565,7 @@ PyDoc_STRVAR(os_fsync__doc__,
 "Force write of fd to disk.");
 
 #define OS_FSYNC_METHODDEF    \
-    {"fsync", (PyCFunction)os_fsync, METH_FASTCALL|METH_KEYWORDS, os_fsync__doc__},
+    {"fsync", (PyCFunction)(void(*)(void))os_fsync, METH_FASTCALL|METH_KEYWORDS, os_fsync__doc__},
 
 static PyObject *
 os_fsync_impl(PyObject *module, int fd);
@@ -621,7 +621,7 @@ PyDoc_STRVAR(os_fdatasync__doc__,
 "Force write of fd to disk without forcing update of metadata.");
 
 #define OS_FDATASYNC_METHODDEF    \
-    {"fdatasync", (PyCFunction)os_fdatasync, METH_FASTCALL|METH_KEYWORDS, os_fdatasync__doc__},
+    {"fdatasync", (PyCFunction)(void(*)(void))os_fdatasync, METH_FASTCALL|METH_KEYWORDS, os_fdatasync__doc__},
 
 static PyObject *
 os_fdatasync_impl(PyObject *module, int fd);
@@ -679,7 +679,7 @@ PyDoc_STRVAR(os_chown__doc__,
 "  If they are unavailable, using them will raise a NotImplementedError.");
 
 #define OS_CHOWN_METHODDEF    \
-    {"chown", (PyCFunction)os_chown, METH_FASTCALL|METH_KEYWORDS, os_chown__doc__},
+    {"chown", (PyCFunction)(void(*)(void))os_chown, METH_FASTCALL|METH_KEYWORDS, os_chown__doc__},
 
 static PyObject *
 os_chown_impl(PyObject *module, path_t *path, uid_t uid, gid_t gid,
@@ -723,7 +723,7 @@ PyDoc_STRVAR(os_fchown__doc__,
 "Equivalent to os.chown(fd, uid, gid).");
 
 #define OS_FCHOWN_METHODDEF    \
-    {"fchown", (PyCFunction)os_fchown, METH_FASTCALL|METH_KEYWORDS, os_fchown__doc__},
+    {"fchown", (PyCFunction)(void(*)(void))os_fchown, METH_FASTCALL|METH_KEYWORDS, os_fchown__doc__},
 
 static PyObject *
 os_fchown_impl(PyObject *module, int fd, uid_t uid, gid_t gid);
@@ -762,7 +762,7 @@ PyDoc_STRVAR(os_lchown__doc__,
 "Equivalent to os.chown(path, uid, gid, follow_symlinks=False).");
 
 #define OS_LCHOWN_METHODDEF    \
-    {"lchown", (PyCFunction)os_lchown, METH_FASTCALL|METH_KEYWORDS, os_lchown__doc__},
+    {"lchown", (PyCFunction)(void(*)(void))os_lchown, METH_FASTCALL|METH_KEYWORDS, os_lchown__doc__},
 
 static PyObject *
 os_lchown_impl(PyObject *module, path_t *path, uid_t uid, gid_t gid);
@@ -848,7 +848,7 @@ PyDoc_STRVAR(os_link__doc__,
 "  NotImplementedError.");
 
 #define OS_LINK_METHODDEF    \
-    {"link", (PyCFunction)os_link, METH_FASTCALL|METH_KEYWORDS, os_link__doc__},
+    {"link", (PyCFunction)(void(*)(void))os_link, METH_FASTCALL|METH_KEYWORDS, os_link__doc__},
 
 static PyObject *
 os_link_impl(PyObject *module, path_t *src, path_t *dst, int src_dir_fd,
@@ -901,7 +901,7 @@ PyDoc_STRVAR(os_listdir__doc__,
 "entries \'.\' and \'..\' even if they are present in the directory.");
 
 #define OS_LISTDIR_METHODDEF    \
-    {"listdir", (PyCFunction)os_listdir, METH_FASTCALL|METH_KEYWORDS, os_listdir__doc__},
+    {"listdir", (PyCFunction)(void(*)(void))os_listdir, METH_FASTCALL|METH_KEYWORDS, os_listdir__doc__},
 
 static PyObject *
 os_listdir_impl(PyObject *module, path_t *path);
@@ -1016,7 +1016,7 @@ PyDoc_STRVAR(os__getvolumepathname__doc__,
 "A helper function for ismount on Win32.");
 
 #define OS__GETVOLUMEPATHNAME_METHODDEF    \
-    {"_getvolumepathname", (PyCFunction)os__getvolumepathname, METH_FASTCALL|METH_KEYWORDS, os__getvolumepathname__doc__},
+    {"_getvolumepathname", (PyCFunction)(void(*)(void))os__getvolumepathname, METH_FASTCALL|METH_KEYWORDS, os__getvolumepathname__doc__},
 
 static PyObject *
 os__getvolumepathname_impl(PyObject *module, path_t *path);
@@ -1058,7 +1058,7 @@ PyDoc_STRVAR(os_mkdir__doc__,
 "The mode argument is ignored on Windows.");
 
 #define OS_MKDIR_METHODDEF    \
-    {"mkdir", (PyCFunction)os_mkdir, METH_FASTCALL|METH_KEYWORDS, os_mkdir__doc__},
+    {"mkdir", (PyCFunction)(void(*)(void))os_mkdir, METH_FASTCALL|METH_KEYWORDS, os_mkdir__doc__},
 
 static PyObject *
 os_mkdir_impl(PyObject *module, path_t *path, int mode, int dir_fd);
@@ -1126,7 +1126,7 @@ PyDoc_STRVAR(os_getpriority__doc__,
 "Return program scheduling priority.");
 
 #define OS_GETPRIORITY_METHODDEF    \
-    {"getpriority", (PyCFunction)os_getpriority, METH_FASTCALL|METH_KEYWORDS, os_getpriority__doc__},
+    {"getpriority", (PyCFunction)(void(*)(void))os_getpriority, METH_FASTCALL|METH_KEYWORDS, os_getpriority__doc__},
 
 static PyObject *
 os_getpriority_impl(PyObject *module, int which, int who);
@@ -1161,7 +1161,7 @@ PyDoc_STRVAR(os_setpriority__doc__,
 "Set program scheduling priority.");
 
 #define OS_SETPRIORITY_METHODDEF    \
-    {"setpriority", (PyCFunction)os_setpriority, METH_FASTCALL|METH_KEYWORDS, os_setpriority__doc__},
+    {"setpriority", (PyCFunction)(void(*)(void))os_setpriority, METH_FASTCALL|METH_KEYWORDS, os_setpriority__doc__},
 
 static PyObject *
 os_setpriority_impl(PyObject *module, int which, int who, int priority);
@@ -1201,7 +1201,7 @@ PyDoc_STRVAR(os_rename__doc__,
 "  If they are unavailable, using them will raise a NotImplementedError.");
 
 #define OS_RENAME_METHODDEF    \
-    {"rename", (PyCFunction)os_rename, METH_FASTCALL|METH_KEYWORDS, os_rename__doc__},
+    {"rename", (PyCFunction)(void(*)(void))os_rename, METH_FASTCALL|METH_KEYWORDS, os_rename__doc__},
 
 static PyObject *
 os_rename_impl(PyObject *module, path_t *src, path_t *dst, int src_dir_fd,
@@ -1246,7 +1246,7 @@ PyDoc_STRVAR(os_replace__doc__,
 "  If they are unavailable, using them will raise a NotImplementedError.\"");
 
 #define OS_REPLACE_METHODDEF    \
-    {"replace", (PyCFunction)os_replace, METH_FASTCALL|METH_KEYWORDS, os_replace__doc__},
+    {"replace", (PyCFunction)(void(*)(void))os_replace, METH_FASTCALL|METH_KEYWORDS, os_replace__doc__},
 
 static PyObject *
 os_replace_impl(PyObject *module, path_t *src, path_t *dst, int src_dir_fd,
@@ -1290,7 +1290,7 @@ PyDoc_STRVAR(os_rmdir__doc__,
 "  If it is unavailable, using it will raise a NotImplementedError.");
 
 #define OS_RMDIR_METHODDEF    \
-    {"rmdir", (PyCFunction)os_rmdir, METH_FASTCALL|METH_KEYWORDS, os_rmdir__doc__},
+    {"rmdir", (PyCFunction)(void(*)(void))os_rmdir, METH_FASTCALL|METH_KEYWORDS, os_rmdir__doc__},
 
 static PyObject *
 os_rmdir_impl(PyObject *module, path_t *path, int dir_fd);
@@ -1326,7 +1326,7 @@ PyDoc_STRVAR(os_system__doc__,
 "Execute the command in a subshell.");
 
 #define OS_SYSTEM_METHODDEF    \
-    {"system", (PyCFunction)os_system, METH_FASTCALL|METH_KEYWORDS, os_system__doc__},
+    {"system", (PyCFunction)(void(*)(void))os_system, METH_FASTCALL|METH_KEYWORDS, os_system__doc__},
 
 static long
 os_system_impl(PyObject *module, Py_UNICODE *command);
@@ -1365,7 +1365,7 @@ PyDoc_STRVAR(os_system__doc__,
 "Execute the command in a subshell.");
 
 #define OS_SYSTEM_METHODDEF    \
-    {"system", (PyCFunction)os_system, METH_FASTCALL|METH_KEYWORDS, os_system__doc__},
+    {"system", (PyCFunction)(void(*)(void))os_system, METH_FASTCALL|METH_KEYWORDS, os_system__doc__},
 
 static long
 os_system_impl(PyObject *module, PyObject *command);
@@ -1437,7 +1437,7 @@ PyDoc_STRVAR(os_unlink__doc__,
 "  If it is unavailable, using it will raise a NotImplementedError.");
 
 #define OS_UNLINK_METHODDEF    \
-    {"unlink", (PyCFunction)os_unlink, METH_FASTCALL|METH_KEYWORDS, os_unlink__doc__},
+    {"unlink", (PyCFunction)(void(*)(void))os_unlink, METH_FASTCALL|METH_KEYWORDS, os_unlink__doc__},
 
 static PyObject *
 os_unlink_impl(PyObject *module, path_t *path, int dir_fd);
@@ -1476,7 +1476,7 @@ PyDoc_STRVAR(os_remove__doc__,
 "  If it is unavailable, using it will raise a NotImplementedError.");
 
 #define OS_REMOVE_METHODDEF    \
-    {"remove", (PyCFunction)os_remove, METH_FASTCALL|METH_KEYWORDS, os_remove__doc__},
+    {"remove", (PyCFunction)(void(*)(void))os_remove, METH_FASTCALL|METH_KEYWORDS, os_remove__doc__},
 
 static PyObject *
 os_remove_impl(PyObject *module, path_t *path, int dir_fd);
@@ -1558,7 +1558,7 @@ PyDoc_STRVAR(os_utime__doc__,
 "  If they are unavailable, using them will raise a NotImplementedError.");
 
 #define OS_UTIME_METHODDEF    \
-    {"utime", (PyCFunction)os_utime, METH_FASTCALL|METH_KEYWORDS, os_utime__doc__},
+    {"utime", (PyCFunction)(void(*)(void))os_utime, METH_FASTCALL|METH_KEYWORDS, os_utime__doc__},
 
 static PyObject *
 os_utime_impl(PyObject *module, path_t *path, PyObject *times, PyObject *ns,
@@ -1596,7 +1596,7 @@ PyDoc_STRVAR(os__exit__doc__,
 "Exit to the system with specified status, without normal exit processing.");
 
 #define OS__EXIT_METHODDEF    \
-    {"_exit", (PyCFunction)os__exit, METH_FASTCALL|METH_KEYWORDS, os__exit__doc__},
+    {"_exit", (PyCFunction)(void(*)(void))os__exit, METH_FASTCALL|METH_KEYWORDS, os__exit__doc__},
 
 static PyObject *
 os__exit_impl(PyObject *module, int status);
@@ -1633,7 +1633,7 @@ PyDoc_STRVAR(os_execv__doc__,
 "    Tuple or list of strings.");
 
 #define OS_EXECV_METHODDEF    \
-    {"execv", (PyCFunction)os_execv, METH_FASTCALL, os_execv__doc__},
+    {"execv", (PyCFunction)(void(*)(void))os_execv, METH_FASTCALL, os_execv__doc__},
 
 static PyObject *
 os_execv_impl(PyObject *module, path_t *path, PyObject *argv);
@@ -1676,7 +1676,7 @@ PyDoc_STRVAR(os_execve__doc__,
 "    Dictionary of strings mapping to strings.");
 
 #define OS_EXECVE_METHODDEF    \
-    {"execve", (PyCFunction)os_execve, METH_FASTCALL|METH_KEYWORDS, os_execve__doc__},
+    {"execve", (PyCFunction)(void(*)(void))os_execve, METH_FASTCALL|METH_KEYWORDS, os_execve__doc__},
 
 static PyObject *
 os_execve_impl(PyObject *module, path_t *path, PyObject *argv, PyObject *env);
@@ -1736,7 +1736,7 @@ PyDoc_STRVAR(os_posix_spawn__doc__,
 "    A tuple with the scheduler policy (optional) and parameters.");
 
 #define OS_POSIX_SPAWN_METHODDEF    \
-    {"posix_spawn", (PyCFunction)os_posix_spawn, METH_FASTCALL|METH_KEYWORDS, os_posix_spawn__doc__},
+    {"posix_spawn", (PyCFunction)(void(*)(void))os_posix_spawn, METH_FASTCALL|METH_KEYWORDS, os_posix_spawn__doc__},
 
 static PyObject *
 os_posix_spawn_impl(PyObject *module, path_t *path, PyObject *argv,
@@ -1791,7 +1791,7 @@ PyDoc_STRVAR(os_spawnv__doc__,
 "    Tuple or list of strings.");
 
 #define OS_SPAWNV_METHODDEF    \
-    {"spawnv", (PyCFunction)os_spawnv, METH_FASTCALL, os_spawnv__doc__},
+    {"spawnv", (PyCFunction)(void(*)(void))os_spawnv, METH_FASTCALL, os_spawnv__doc__},
 
 static PyObject *
 os_spawnv_impl(PyObject *module, int mode, path_t *path, PyObject *argv);
@@ -1837,7 +1837,7 @@ PyDoc_STRVAR(os_spawnve__doc__,
 "    Dictionary of strings mapping to strings.");
 
 #define OS_SPAWNVE_METHODDEF    \
-    {"spawnve", (PyCFunction)os_spawnve, METH_FASTCALL, os_spawnve__doc__},
+    {"spawnve", (PyCFunction)(void(*)(void))os_spawnve, METH_FASTCALL, os_spawnve__doc__},
 
 static PyObject *
 os_spawnve_impl(PyObject *module, int mode, path_t *path, PyObject *argv,
@@ -1887,7 +1887,7 @@ PyDoc_STRVAR(os_register_at_fork__doc__,
 "\'after_in_child\' and \'after_in_parent\' callbacks are called in order.");
 
 #define OS_REGISTER_AT_FORK_METHODDEF    \
-    {"register_at_fork", (PyCFunction)os_register_at_fork, METH_FASTCALL|METH_KEYWORDS, os_register_at_fork__doc__},
+    {"register_at_fork", (PyCFunction)(void(*)(void))os_register_at_fork, METH_FASTCALL|METH_KEYWORDS, os_register_at_fork__doc__},
 
 static PyObject *
 os_register_at_fork_impl(PyObject *module, PyObject *before,
@@ -1972,7 +1972,7 @@ PyDoc_STRVAR(os_sched_get_priority_max__doc__,
 "Get the maximum scheduling priority for policy.");
 
 #define OS_SCHED_GET_PRIORITY_MAX_METHODDEF    \
-    {"sched_get_priority_max", (PyCFunction)os_sched_get_priority_max, METH_FASTCALL|METH_KEYWORDS, os_sched_get_priority_max__doc__},
+    {"sched_get_priority_max", (PyCFunction)(void(*)(void))os_sched_get_priority_max, METH_FASTCALL|METH_KEYWORDS, os_sched_get_priority_max__doc__},
 
 static PyObject *
 os_sched_get_priority_max_impl(PyObject *module, int policy);
@@ -2006,7 +2006,7 @@ PyDoc_STRVAR(os_sched_get_priority_min__doc__,
 "Get the minimum scheduling priority for policy.");
 
 #define OS_SCHED_GET_PRIORITY_MIN_METHODDEF    \
-    {"sched_get_priority_min", (PyCFunction)os_sched_get_priority_min, METH_FASTCALL|METH_KEYWORDS, os_sched_get_priority_min__doc__},
+    {"sched_get_priority_min", (PyCFunction)(void(*)(void))os_sched_get_priority_min, METH_FASTCALL|METH_KEYWORDS, os_sched_get_priority_min__doc__},
 
 static PyObject *
 os_sched_get_priority_min_impl(PyObject *module, int policy);
@@ -2110,7 +2110,7 @@ PyDoc_STRVAR(os_sched_setscheduler__doc__,
 "param is an instance of sched_param.");
 
 #define OS_SCHED_SETSCHEDULER_METHODDEF    \
-    {"sched_setscheduler", (PyCFunction)os_sched_setscheduler, METH_FASTCALL, os_sched_setscheduler__doc__},
+    {"sched_setscheduler", (PyCFunction)(void(*)(void))os_sched_setscheduler, METH_FASTCALL, os_sched_setscheduler__doc__},
 
 static PyObject *
 os_sched_setscheduler_impl(PyObject *module, pid_t pid, int policy,
@@ -2182,7 +2182,7 @@ PyDoc_STRVAR(os_sched_setparam__doc__,
 "param should be an instance of sched_param.");
 
 #define OS_SCHED_SETPARAM_METHODDEF    \
-    {"sched_setparam", (PyCFunction)os_sched_setparam, METH_FASTCALL, os_sched_setparam__doc__},
+    {"sched_setparam", (PyCFunction)(void(*)(void))os_sched_setparam, METH_FASTCALL, os_sched_setparam__doc__},
 
 static PyObject *
 os_sched_setparam_impl(PyObject *module, pid_t pid,
@@ -2278,7 +2278,7 @@ PyDoc_STRVAR(os_sched_setaffinity__doc__,
 "mask should be an iterable of integers identifying CPUs.");
 
 #define OS_SCHED_SETAFFINITY_METHODDEF    \
-    {"sched_setaffinity", (PyCFunction)os_sched_setaffinity, METH_FASTCALL, os_sched_setaffinity__doc__},
+    {"sched_setaffinity", (PyCFunction)(void(*)(void))os_sched_setaffinity, METH_FASTCALL, os_sched_setaffinity__doc__},
 
 static PyObject *
 os_sched_setaffinity_impl(PyObject *module, pid_t pid, PyObject *mask);
@@ -2506,7 +2506,7 @@ PyDoc_STRVAR(os_getpgid__doc__,
 "Call the system call getpgid(), and return the result.");
 
 #define OS_GETPGID_METHODDEF    \
-    {"getpgid", (PyCFunction)os_getpgid, METH_FASTCALL|METH_KEYWORDS, os_getpgid__doc__},
+    {"getpgid", (PyCFunction)(void(*)(void))os_getpgid, METH_FASTCALL|METH_KEYWORDS, os_getpgid__doc__},
 
 static PyObject *
 os_getpgid_impl(PyObject *module, pid_t pid);
@@ -2653,7 +2653,7 @@ PyDoc_STRVAR(os_kill__doc__,
 "Kill a process with a signal.");
 
 #define OS_KILL_METHODDEF    \
-    {"kill", (PyCFunction)os_kill, METH_FASTCALL, os_kill__doc__},
+    {"kill", (PyCFunction)(void(*)(void))os_kill, METH_FASTCALL, os_kill__doc__},
 
 static PyObject *
 os_kill_impl(PyObject *module, pid_t pid, Py_ssize_t signal);
@@ -2686,7 +2686,7 @@ PyDoc_STRVAR(os_killpg__doc__,
 "Kill a process group with a signal.");
 
 #define OS_KILLPG_METHODDEF    \
-    {"killpg", (PyCFunction)os_killpg, METH_FASTCALL, os_killpg__doc__},
+    {"killpg", (PyCFunction)(void(*)(void))os_killpg, METH_FASTCALL, os_killpg__doc__},
 
 static PyObject *
 os_killpg_impl(PyObject *module, pid_t pgid, int signal);
@@ -2843,7 +2843,7 @@ PyDoc_STRVAR(os_setreuid__doc__,
 "Set the current process\'s real and effective user ids.");
 
 #define OS_SETREUID_METHODDEF    \
-    {"setreuid", (PyCFunction)os_setreuid, METH_FASTCALL, os_setreuid__doc__},
+    {"setreuid", (PyCFunction)(void(*)(void))os_setreuid, METH_FASTCALL, os_setreuid__doc__},
 
 static PyObject *
 os_setreuid_impl(PyObject *module, uid_t ruid, uid_t euid);
@@ -2876,7 +2876,7 @@ PyDoc_STRVAR(os_setregid__doc__,
 "Set the current process\'s real and effective group ids.");
 
 #define OS_SETREGID_METHODDEF    \
-    {"setregid", (PyCFunction)os_setregid, METH_FASTCALL, os_setregid__doc__},
+    {"setregid", (PyCFunction)(void(*)(void))os_setregid, METH_FASTCALL, os_setregid__doc__},
 
 static PyObject *
 os_setregid_impl(PyObject *module, gid_t rgid, gid_t egid);
@@ -2956,7 +2956,7 @@ PyDoc_STRVAR(os_wait3__doc__,
 "  (pid, status, rusage)");
 
 #define OS_WAIT3_METHODDEF    \
-    {"wait3", (PyCFunction)os_wait3, METH_FASTCALL|METH_KEYWORDS, os_wait3__doc__},
+    {"wait3", (PyCFunction)(void(*)(void))os_wait3, METH_FASTCALL|METH_KEYWORDS, os_wait3__doc__},
 
 static PyObject *
 os_wait3_impl(PyObject *module, int options);
@@ -2993,7 +2993,7 @@ PyDoc_STRVAR(os_wait4__doc__,
 "  (pid, status, rusage)");
 
 #define OS_WAIT4_METHODDEF    \
-    {"wait4", (PyCFunction)os_wait4, METH_FASTCALL|METH_KEYWORDS, os_wait4__doc__},
+    {"wait4", (PyCFunction)(void(*)(void))os_wait4, METH_FASTCALL|METH_KEYWORDS, os_wait4__doc__},
 
 static PyObject *
 os_wait4_impl(PyObject *module, pid_t pid, int options);
@@ -3039,7 +3039,7 @@ PyDoc_STRVAR(os_waitid__doc__,
 "no children in a waitable state.");
 
 #define OS_WAITID_METHODDEF    \
-    {"waitid", (PyCFunction)os_waitid, METH_FASTCALL, os_waitid__doc__},
+    {"waitid", (PyCFunction)(void(*)(void))os_waitid, METH_FASTCALL, os_waitid__doc__},
 
 static PyObject *
 os_waitid_impl(PyObject *module, idtype_t idtype, id_t id, int options);
@@ -3078,7 +3078,7 @@ PyDoc_STRVAR(os_waitpid__doc__,
 "The options argument is ignored on Windows.");
 
 #define OS_WAITPID_METHODDEF    \
-    {"waitpid", (PyCFunction)os_waitpid, METH_FASTCALL, os_waitpid__doc__},
+    {"waitpid", (PyCFunction)(void(*)(void))os_waitpid, METH_FASTCALL, os_waitpid__doc__},
 
 static PyObject *
 os_waitpid_impl(PyObject *module, pid_t pid, int options);
@@ -3116,7 +3116,7 @@ PyDoc_STRVAR(os_waitpid__doc__,
 "The options argument is ignored on Windows.");
 
 #define OS_WAITPID_METHODDEF    \
-    {"waitpid", (PyCFunction)os_waitpid, METH_FASTCALL, os_waitpid__doc__},
+    {"waitpid", (PyCFunction)(void(*)(void))os_waitpid, METH_FASTCALL, os_waitpid__doc__},
 
 static PyObject *
 os_waitpid_impl(PyObject *module, intptr_t pid, int options);
@@ -3180,7 +3180,7 @@ PyDoc_STRVAR(os_readlink__doc__,
 "using it will raise a NotImplementedError.");
 
 #define OS_READLINK_METHODDEF    \
-    {"readlink", (PyCFunction)os_readlink, METH_FASTCALL|METH_KEYWORDS, os_readlink__doc__},
+    {"readlink", (PyCFunction)(void(*)(void))os_readlink, METH_FASTCALL|METH_KEYWORDS, os_readlink__doc__},
 
 static PyObject *
 os_readlink_impl(PyObject *module, path_t *path, int dir_fd);
@@ -3228,7 +3228,7 @@ PyDoc_STRVAR(os_symlink__doc__,
 "  If it is unavailable, using it will raise a NotImplementedError.");
 
 #define OS_SYMLINK_METHODDEF    \
-    {"symlink", (PyCFunction)os_symlink, METH_FASTCALL|METH_KEYWORDS, os_symlink__doc__},
+    {"symlink", (PyCFunction)(void(*)(void))os_symlink, METH_FASTCALL|METH_KEYWORDS, os_symlink__doc__},
 
 static PyObject *
 os_symlink_impl(PyObject *module, path_t *src, path_t *dst,
@@ -3350,7 +3350,7 @@ PyDoc_STRVAR(os_setpgid__doc__,
 "Call the system call setpgid(pid, pgrp).");
 
 #define OS_SETPGID_METHODDEF    \
-    {"setpgid", (PyCFunction)os_setpgid, METH_FASTCALL, os_setpgid__doc__},
+    {"setpgid", (PyCFunction)(void(*)(void))os_setpgid, METH_FASTCALL, os_setpgid__doc__},
 
 static PyObject *
 os_setpgid_impl(PyObject *module, pid_t pid, pid_t pgrp);
@@ -3414,7 +3414,7 @@ PyDoc_STRVAR(os_tcsetpgrp__doc__,
 "Set the process group associated with the terminal specified by fd.");
 
 #define OS_TCSETPGRP_METHODDEF    \
-    {"tcsetpgrp", (PyCFunction)os_tcsetpgrp, METH_FASTCALL, os_tcsetpgrp__doc__},
+    {"tcsetpgrp", (PyCFunction)(void(*)(void))os_tcsetpgrp, METH_FASTCALL, os_tcsetpgrp__doc__},
 
 static PyObject *
 os_tcsetpgrp_impl(PyObject *module, int fd, pid_t pgid);
@@ -3450,7 +3450,7 @@ PyDoc_STRVAR(os_open__doc__,
 "  If it is unavailable, using it will raise a NotImplementedError.");
 
 #define OS_OPEN_METHODDEF    \
-    {"open", (PyCFunction)os_open, METH_FASTCALL|METH_KEYWORDS, os_open__doc__},
+    {"open", (PyCFunction)(void(*)(void))os_open, METH_FASTCALL|METH_KEYWORDS, os_open__doc__},
 
 static int
 os_open_impl(PyObject *module, path_t *path, int flags, int mode, int dir_fd);
@@ -3491,7 +3491,7 @@ PyDoc_STRVAR(os_close__doc__,
 "Close a file descriptor.");
 
 #define OS_CLOSE_METHODDEF    \
-    {"close", (PyCFunction)os_close, METH_FASTCALL|METH_KEYWORDS, os_close__doc__},
+    {"close", (PyCFunction)(void(*)(void))os_close, METH_FASTCALL|METH_KEYWORDS, os_close__doc__},
 
 static PyObject *
 os_close_impl(PyObject *module, int fd);
@@ -3521,7 +3521,7 @@ PyDoc_STRVAR(os_closerange__doc__,
 "Closes all file descriptors in [fd_low, fd_high), ignoring errors.");
 
 #define OS_CLOSERANGE_METHODDEF    \
-    {"closerange", (PyCFunction)os_closerange, METH_FASTCALL, os_closerange__doc__},
+    {"closerange", (PyCFunction)(void(*)(void))os_closerange, METH_FASTCALL, os_closerange__doc__},
 
 static PyObject *
 os_closerange_impl(PyObject *module, int fd_low, int fd_high);
@@ -3582,7 +3582,7 @@ PyDoc_STRVAR(os_dup2__doc__,
 "Duplicate file descriptor.");
 
 #define OS_DUP2_METHODDEF    \
-    {"dup2", (PyCFunction)os_dup2, METH_FASTCALL|METH_KEYWORDS, os_dup2__doc__},
+    {"dup2", (PyCFunction)(void(*)(void))os_dup2, METH_FASTCALL|METH_KEYWORDS, os_dup2__doc__},
 
 static int
 os_dup2_impl(PyObject *module, int fd, int fd2, int inheritable);
@@ -3628,7 +3628,7 @@ PyDoc_STRVAR(os_lockf__doc__,
 "    The number of bytes to lock, starting at the current position.");
 
 #define OS_LOCKF_METHODDEF    \
-    {"lockf", (PyCFunction)os_lockf, METH_FASTCALL, os_lockf__doc__},
+    {"lockf", (PyCFunction)(void(*)(void))os_lockf, METH_FASTCALL, os_lockf__doc__},
 
 static PyObject *
 os_lockf_impl(PyObject *module, int fd, int command, Py_off_t length);
@@ -3663,7 +3663,7 @@ PyDoc_STRVAR(os_lseek__doc__,
 "relative to the beginning of the file.");
 
 #define OS_LSEEK_METHODDEF    \
-    {"lseek", (PyCFunction)os_lseek, METH_FASTCALL, os_lseek__doc__},
+    {"lseek", (PyCFunction)(void(*)(void))os_lseek, METH_FASTCALL, os_lseek__doc__},
 
 static Py_off_t
 os_lseek_impl(PyObject *module, int fd, Py_off_t position, int how);
@@ -3698,7 +3698,7 @@ PyDoc_STRVAR(os_read__doc__,
 "Read from a file descriptor.  Returns a bytes object.");
 
 #define OS_READ_METHODDEF    \
-    {"read", (PyCFunction)os_read, METH_FASTCALL, os_read__doc__},
+    {"read", (PyCFunction)(void(*)(void))os_read, METH_FASTCALL, os_read__doc__},
 
 static PyObject *
 os_read_impl(PyObject *module, int fd, Py_ssize_t length);
@@ -3737,7 +3737,7 @@ PyDoc_STRVAR(os_readv__doc__,
 "which may be less than the total capacity of all the buffers.");
 
 #define OS_READV_METHODDEF    \
-    {"readv", (PyCFunction)os_readv, METH_FASTCALL, os_readv__doc__},
+    {"readv", (PyCFunction)(void(*)(void))os_readv, METH_FASTCALL, os_readv__doc__},
 
 static Py_ssize_t
 os_readv_impl(PyObject *module, int fd, PyObject *buffers);
@@ -3778,7 +3778,7 @@ PyDoc_STRVAR(os_pread__doc__,
 "the beginning of the file.  The file offset remains unchanged.");
 
 #define OS_PREAD_METHODDEF    \
-    {"pread", (PyCFunction)os_pread, METH_FASTCALL, os_pread__doc__},
+    {"pread", (PyCFunction)(void(*)(void))os_pread, METH_FASTCALL, os_pread__doc__},
 
 static PyObject *
 os_pread_impl(PyObject *module, int fd, int length, Py_off_t offset);
@@ -3826,7 +3826,7 @@ PyDoc_STRVAR(os_preadv__doc__,
 "Using non-zero flags requires Linux 4.6 or newer.");
 
 #define OS_PREADV_METHODDEF    \
-    {"preadv", (PyCFunction)os_preadv, METH_FASTCALL, os_preadv__doc__},
+    {"preadv", (PyCFunction)(void(*)(void))os_preadv, METH_FASTCALL, os_preadv__doc__},
 
 static Py_ssize_t
 os_preadv_impl(PyObject *module, int fd, PyObject *buffers, Py_off_t offset,
@@ -3865,7 +3865,7 @@ PyDoc_STRVAR(os_write__doc__,
 "Write a bytes object to a file descriptor.");
 
 #define OS_WRITE_METHODDEF    \
-    {"write", (PyCFunction)os_write, METH_FASTCALL, os_write__doc__},
+    {"write", (PyCFunction)(void(*)(void))os_write, METH_FASTCALL, os_write__doc__},
 
 static Py_ssize_t
 os_write_impl(PyObject *module, int fd, Py_buffer *data);
@@ -3906,7 +3906,7 @@ PyDoc_STRVAR(os__fcopyfile__doc__,
 "Efficiently copy content or metadata of 2 regular file descriptors (macOS).");
 
 #define OS__FCOPYFILE_METHODDEF    \
-    {"_fcopyfile", (PyCFunction)os__fcopyfile, METH_FASTCALL, os__fcopyfile__doc__},
+    {"_fcopyfile", (PyCFunction)(void(*)(void))os__fcopyfile, METH_FASTCALL, os__fcopyfile__doc__},
 
 static PyObject *
 os__fcopyfile_impl(PyObject *module, int infd, int outfd, int flags);
@@ -3941,7 +3941,7 @@ PyDoc_STRVAR(os_fstat__doc__,
 "Equivalent to os.stat(fd).");
 
 #define OS_FSTAT_METHODDEF    \
-    {"fstat", (PyCFunction)os_fstat, METH_FASTCALL|METH_KEYWORDS, os_fstat__doc__},
+    {"fstat", (PyCFunction)(void(*)(void))os_fstat, METH_FASTCALL|METH_KEYWORDS, os_fstat__doc__},
 
 static PyObject *
 os_fstat_impl(PyObject *module, int fd);
@@ -4073,7 +4073,7 @@ PyDoc_STRVAR(os_writev__doc__,
 "buffers must be a sequence of bytes-like objects.");
 
 #define OS_WRITEV_METHODDEF    \
-    {"writev", (PyCFunction)os_writev, METH_FASTCALL, os_writev__doc__},
+    {"writev", (PyCFunction)(void(*)(void))os_writev, METH_FASTCALL, os_writev__doc__},
 
 static Py_ssize_t
 os_writev_impl(PyObject *module, int fd, PyObject *buffers);
@@ -4115,7 +4115,7 @@ PyDoc_STRVAR(os_pwrite__doc__,
 "current file offset.");
 
 #define OS_PWRITE_METHODDEF    \
-    {"pwrite", (PyCFunction)os_pwrite, METH_FASTCALL, os_pwrite__doc__},
+    {"pwrite", (PyCFunction)(void(*)(void))os_pwrite, METH_FASTCALL, os_pwrite__doc__},
 
 static Py_ssize_t
 os_pwrite_impl(PyObject *module, int fd, Py_buffer *buffer, Py_off_t offset);
@@ -4173,7 +4173,7 @@ PyDoc_STRVAR(os_pwritev__doc__,
 "Using non-zero flags requires Linux 4.7 or newer.");
 
 #define OS_PWRITEV_METHODDEF    \
-    {"pwritev", (PyCFunction)os_pwritev, METH_FASTCALL, os_pwritev__doc__},
+    {"pwritev", (PyCFunction)(void(*)(void))os_pwritev, METH_FASTCALL, os_pwritev__doc__},
 
 static Py_ssize_t
 os_pwritev_impl(PyObject *module, int fd, PyObject *buffers, Py_off_t offset,
@@ -4219,7 +4219,7 @@ PyDoc_STRVAR(os_mkfifo__doc__,
 "  If it is unavailable, using it will raise a NotImplementedError.");
 
 #define OS_MKFIFO_METHODDEF    \
-    {"mkfifo", (PyCFunction)os_mkfifo, METH_FASTCALL|METH_KEYWORDS, os_mkfifo__doc__},
+    {"mkfifo", (PyCFunction)(void(*)(void))os_mkfifo, METH_FASTCALL|METH_KEYWORDS, os_mkfifo__doc__},
 
 static PyObject *
 os_mkfifo_impl(PyObject *module, path_t *path, int mode, int dir_fd);
@@ -4270,7 +4270,7 @@ PyDoc_STRVAR(os_mknod__doc__,
 "  If it is unavailable, using it will raise a NotImplementedError.");
 
 #define OS_MKNOD_METHODDEF    \
-    {"mknod", (PyCFunction)os_mknod, METH_FASTCALL|METH_KEYWORDS, os_mknod__doc__},
+    {"mknod", (PyCFunction)(void(*)(void))os_mknod, METH_FASTCALL|METH_KEYWORDS, os_mknod__doc__},
 
 static PyObject *
 os_mknod_impl(PyObject *module, path_t *path, int mode, dev_t device,
@@ -4383,7 +4383,7 @@ PyDoc_STRVAR(os_makedev__doc__,
 "Composes a raw device number from the major and minor device numbers.");
 
 #define OS_MAKEDEV_METHODDEF    \
-    {"makedev", (PyCFunction)os_makedev, METH_FASTCALL, os_makedev__doc__},
+    {"makedev", (PyCFunction)(void(*)(void))os_makedev, METH_FASTCALL, os_makedev__doc__},
 
 static dev_t
 os_makedev_impl(PyObject *module, int major, int minor);
@@ -4421,7 +4421,7 @@ PyDoc_STRVAR(os_ftruncate__doc__,
 "Truncate a file, specified by file descriptor, to a specific length.");
 
 #define OS_FTRUNCATE_METHODDEF    \
-    {"ftruncate", (PyCFunction)os_ftruncate, METH_FASTCALL, os_ftruncate__doc__},
+    {"ftruncate", (PyCFunction)(void(*)(void))os_ftruncate, METH_FASTCALL, os_ftruncate__doc__},
 
 static PyObject *
 os_ftruncate_impl(PyObject *module, int fd, Py_off_t length);
@@ -4457,7 +4457,7 @@ PyDoc_STRVAR(os_truncate__doc__,
 "  If this functionality is unavailable, using it raises an exception.");
 
 #define OS_TRUNCATE_METHODDEF    \
-    {"truncate", (PyCFunction)os_truncate, METH_FASTCALL|METH_KEYWORDS, os_truncate__doc__},
+    {"truncate", (PyCFunction)(void(*)(void))os_truncate, METH_FASTCALL|METH_KEYWORDS, os_truncate__doc__},
 
 static PyObject *
 os_truncate_impl(PyObject *module, path_t *path, Py_off_t length);
@@ -4498,7 +4498,7 @@ PyDoc_STRVAR(os_posix_fallocate__doc__,
 "starting at offset bytes from the beginning and continuing for length bytes.");
 
 #define OS_POSIX_FALLOCATE_METHODDEF    \
-    {"posix_fallocate", (PyCFunction)os_posix_fallocate, METH_FASTCALL, os_posix_fallocate__doc__},
+    {"posix_fallocate", (PyCFunction)(void(*)(void))os_posix_fallocate, METH_FASTCALL, os_posix_fallocate__doc__},
 
 static PyObject *
 os_posix_fallocate_impl(PyObject *module, int fd, Py_off_t offset,
@@ -4541,7 +4541,7 @@ PyDoc_STRVAR(os_posix_fadvise__doc__,
 "POSIX_FADV_DONTNEED.");
 
 #define OS_POSIX_FADVISE_METHODDEF    \
-    {"posix_fadvise", (PyCFunction)os_posix_fadvise, METH_FASTCALL, os_posix_fadvise__doc__},
+    {"posix_fadvise", (PyCFunction)(void(*)(void))os_posix_fadvise, METH_FASTCALL, os_posix_fadvise__doc__},
 
 static PyObject *
 os_posix_fadvise_impl(PyObject *module, int fd, Py_off_t offset,
@@ -4577,7 +4577,7 @@ PyDoc_STRVAR(os_putenv__doc__,
 "Change or add an environment variable.");
 
 #define OS_PUTENV_METHODDEF    \
-    {"putenv", (PyCFunction)os_putenv, METH_FASTCALL, os_putenv__doc__},
+    {"putenv", (PyCFunction)(void(*)(void))os_putenv, METH_FASTCALL, os_putenv__doc__},
 
 static PyObject *
 os_putenv_impl(PyObject *module, PyObject *name, PyObject *value);
@@ -4610,7 +4610,7 @@ PyDoc_STRVAR(os_putenv__doc__,
 "Change or add an environment variable.");
 
 #define OS_PUTENV_METHODDEF    \
-    {"putenv", (PyCFunction)os_putenv, METH_FASTCALL, os_putenv__doc__},
+    {"putenv", (PyCFunction)(void(*)(void))os_putenv, METH_FASTCALL, os_putenv__doc__},
 
 static PyObject *
 os_putenv_impl(PyObject *module, PyObject *name, PyObject *value);
@@ -4748,7 +4748,7 @@ PyDoc_STRVAR(os_WIFCONTINUED__doc__,
 "job control stop.");
 
 #define OS_WIFCONTINUED_METHODDEF    \
-    {"WIFCONTINUED", (PyCFunction)os_WIFCONTINUED, METH_FASTCALL|METH_KEYWORDS, os_WIFCONTINUED__doc__},
+    {"WIFCONTINUED", (PyCFunction)(void(*)(void))os_WIFCONTINUED, METH_FASTCALL|METH_KEYWORDS, os_WIFCONTINUED__doc__},
 
 static int
 os_WIFCONTINUED_impl(PyObject *module, int status);
@@ -4787,7 +4787,7 @@ PyDoc_STRVAR(os_WIFSTOPPED__doc__,
 "Return True if the process returning status was stopped.");
 
 #define OS_WIFSTOPPED_METHODDEF    \
-    {"WIFSTOPPED", (PyCFunction)os_WIFSTOPPED, METH_FASTCALL|METH_KEYWORDS, os_WIFSTOPPED__doc__},
+    {"WIFSTOPPED", (PyCFunction)(void(*)(void))os_WIFSTOPPED, METH_FASTCALL|METH_KEYWORDS, os_WIFSTOPPED__doc__},
 
 static int
 os_WIFSTOPPED_impl(PyObject *module, int status);
@@ -4826,7 +4826,7 @@ PyDoc_STRVAR(os_WIFSIGNALED__doc__,
 "Return True if the process returning status was terminated by a signal.");
 
 #define OS_WIFSIGNALED_METHODDEF    \
-    {"WIFSIGNALED", (PyCFunction)os_WIFSIGNALED, METH_FASTCALL|METH_KEYWORDS, os_WIFSIGNALED__doc__},
+    {"WIFSIGNALED", (PyCFunction)(void(*)(void))os_WIFSIGNALED, METH_FASTCALL|METH_KEYWORDS, os_WIFSIGNALED__doc__},
 
 static int
 os_WIFSIGNALED_impl(PyObject *module, int status);
@@ -4865,7 +4865,7 @@ PyDoc_STRVAR(os_WIFEXITED__doc__,
 "Return True if the process returning status exited via the exit() system call.");
 
 #define OS_WIFEXITED_METHODDEF    \
-    {"WIFEXITED", (PyCFunction)os_WIFEXITED, METH_FASTCALL|METH_KEYWORDS, os_WIFEXITED__doc__},
+    {"WIFEXITED", (PyCFunction)(void(*)(void))os_WIFEXITED, METH_FASTCALL|METH_KEYWORDS, os_WIFEXITED__doc__},
 
 static int
 os_WIFEXITED_impl(PyObject *module, int status);
@@ -4904,7 +4904,7 @@ PyDoc_STRVAR(os_WEXITSTATUS__doc__,
 "Return the process return code from status.");
 
 #define OS_WEXITSTATUS_METHODDEF    \
-    {"WEXITSTATUS", (PyCFunction)os_WEXITSTATUS, METH_FASTCALL|METH_KEYWORDS, os_WEXITSTATUS__doc__},
+    {"WEXITSTATUS", (PyCFunction)(void(*)(void))os_WEXITSTATUS, METH_FASTCALL|METH_KEYWORDS, os_WEXITSTATUS__doc__},
 
 static int
 os_WEXITSTATUS_impl(PyObject *module, int status);
@@ -4943,7 +4943,7 @@ PyDoc_STRVAR(os_WTERMSIG__doc__,
 "Return the signal that terminated the process that provided the status value.");
 
 #define OS_WTERMSIG_METHODDEF    \
-    {"WTERMSIG", (PyCFunction)os_WTERMSIG, METH_FASTCALL|METH_KEYWORDS, os_WTERMSIG__doc__},
+    {"WTERMSIG", (PyCFunction)(void(*)(void))os_WTERMSIG, METH_FASTCALL|METH_KEYWORDS, os_WTERMSIG__doc__},
 
 static int
 os_WTERMSIG_impl(PyObject *module, int status);
@@ -4982,7 +4982,7 @@ PyDoc_STRVAR(os_WSTOPSIG__doc__,
 "Return the signal that stopped the process that provided the status value.");
 
 #define OS_WSTOPSIG_METHODDEF    \
-    {"WSTOPSIG", (PyCFunction)os_WSTOPSIG, METH_FASTCALL|METH_KEYWORDS, os_WSTOPSIG__doc__},
+    {"WSTOPSIG", (PyCFunction)(void(*)(void))os_WSTOPSIG, METH_FASTCALL|METH_KEYWORDS, os_WSTOPSIG__doc__},
 
 static int
 os_WSTOPSIG_impl(PyObject *module, int status);
@@ -5058,7 +5058,7 @@ PyDoc_STRVAR(os_statvfs__doc__,
 "  If this functionality is unavailable, using it raises an exception.");
 
 #define OS_STATVFS_METHODDEF    \
-    {"statvfs", (PyCFunction)os_statvfs, METH_FASTCALL|METH_KEYWORDS, os_statvfs__doc__},
+    {"statvfs", (PyCFunction)(void(*)(void))os_statvfs, METH_FASTCALL|METH_KEYWORDS, os_statvfs__doc__},
 
 static PyObject *
 os_statvfs_impl(PyObject *module, path_t *path);
@@ -5095,7 +5095,7 @@ PyDoc_STRVAR(os__getdiskusage__doc__,
 "Return disk usage statistics about the given path as a (total, free) tuple.");
 
 #define OS__GETDISKUSAGE_METHODDEF    \
-    {"_getdiskusage", (PyCFunction)os__getdiskusage, METH_FASTCALL|METH_KEYWORDS, os__getdiskusage__doc__},
+    {"_getdiskusage", (PyCFunction)(void(*)(void))os__getdiskusage, METH_FASTCALL|METH_KEYWORDS, os__getdiskusage__doc__},
 
 static PyObject *
 os__getdiskusage_impl(PyObject *module, path_t *path);
@@ -5134,7 +5134,7 @@ PyDoc_STRVAR(os_fpathconf__doc__,
 "If there is no limit, return -1.");
 
 #define OS_FPATHCONF_METHODDEF    \
-    {"fpathconf", (PyCFunction)os_fpathconf, METH_FASTCALL, os_fpathconf__doc__},
+    {"fpathconf", (PyCFunction)(void(*)(void))os_fpathconf, METH_FASTCALL, os_fpathconf__doc__},
 
 static long
 os_fpathconf_impl(PyObject *module, int fd, int name);
@@ -5176,7 +5176,7 @@ PyDoc_STRVAR(os_pathconf__doc__,
 "  If this functionality is unavailable, using it raises an exception.");
 
 #define OS_PATHCONF_METHODDEF    \
-    {"pathconf", (PyCFunction)os_pathconf, METH_FASTCALL|METH_KEYWORDS, os_pathconf__doc__},
+    {"pathconf", (PyCFunction)(void(*)(void))os_pathconf, METH_FASTCALL|METH_KEYWORDS, os_pathconf__doc__},
 
 static long
 os_pathconf_impl(PyObject *module, path_t *path, int name);
@@ -5324,7 +5324,7 @@ PyDoc_STRVAR(os_startfile__doc__,
 "the underlying Win32 ShellExecute function doesn\'t work if it is.");
 
 #define OS_STARTFILE_METHODDEF    \
-    {"startfile", (PyCFunction)os_startfile, METH_FASTCALL|METH_KEYWORDS, os_startfile__doc__},
+    {"startfile", (PyCFunction)(void(*)(void))os_startfile, METH_FASTCALL|METH_KEYWORDS, os_startfile__doc__},
 
 static PyObject *
 os_startfile_impl(PyObject *module, path_t *filepath, Py_UNICODE *operation);
@@ -5389,7 +5389,7 @@ PyDoc_STRVAR(os_device_encoding__doc__,
 "If the device is not a terminal, return None.");
 
 #define OS_DEVICE_ENCODING_METHODDEF    \
-    {"device_encoding", (PyCFunction)os_device_encoding, METH_FASTCALL|METH_KEYWORDS, os_device_encoding__doc__},
+    {"device_encoding", (PyCFunction)(void(*)(void))os_device_encoding, METH_FASTCALL|METH_KEYWORDS, os_device_encoding__doc__},
 
 static PyObject *
 os_device_encoding_impl(PyObject *module, int fd);
@@ -5421,7 +5421,7 @@ PyDoc_STRVAR(os_setresuid__doc__,
 "Set the current process\'s real, effective, and saved user ids.");
 
 #define OS_SETRESUID_METHODDEF    \
-    {"setresuid", (PyCFunction)os_setresuid, METH_FASTCALL, os_setresuid__doc__},
+    {"setresuid", (PyCFunction)(void(*)(void))os_setresuid, METH_FASTCALL, os_setresuid__doc__},
 
 static PyObject *
 os_setresuid_impl(PyObject *module, uid_t ruid, uid_t euid, uid_t suid);
@@ -5455,7 +5455,7 @@ PyDoc_STRVAR(os_setresgid__doc__,
 "Set the current process\'s real, effective, and saved group ids.");
 
 #define OS_SETRESGID_METHODDEF    \
-    {"setresgid", (PyCFunction)os_setresgid, METH_FASTCALL, os_setresgid__doc__},
+    {"setresgid", (PyCFunction)(void(*)(void))os_setresgid, METH_FASTCALL, os_setresgid__doc__},
 
 static PyObject *
 os_setresgid_impl(PyObject *module, gid_t rgid, gid_t egid, gid_t sgid);
@@ -5538,7 +5538,7 @@ PyDoc_STRVAR(os_getxattr__doc__,
 "  the link points to.");
 
 #define OS_GETXATTR_METHODDEF    \
-    {"getxattr", (PyCFunction)os_getxattr, METH_FASTCALL|METH_KEYWORDS, os_getxattr__doc__},
+    {"getxattr", (PyCFunction)(void(*)(void))os_getxattr, METH_FASTCALL|METH_KEYWORDS, os_getxattr__doc__},
 
 static PyObject *
 os_getxattr_impl(PyObject *module, path_t *path, path_t *attribute,
@@ -5586,7 +5586,7 @@ PyDoc_STRVAR(os_setxattr__doc__,
 "  the link points to.");
 
 #define OS_SETXATTR_METHODDEF    \
-    {"setxattr", (PyCFunction)os_setxattr, METH_FASTCALL|METH_KEYWORDS, os_setxattr__doc__},
+    {"setxattr", (PyCFunction)(void(*)(void))os_setxattr, METH_FASTCALL|METH_KEYWORDS, os_setxattr__doc__},
 
 static PyObject *
 os_setxattr_impl(PyObject *module, path_t *path, path_t *attribute,
@@ -5639,7 +5639,7 @@ PyDoc_STRVAR(os_removexattr__doc__,
 "  the link points to.");
 
 #define OS_REMOVEXATTR_METHODDEF    \
-    {"removexattr", (PyCFunction)os_removexattr, METH_FASTCALL|METH_KEYWORDS, os_removexattr__doc__},
+    {"removexattr", (PyCFunction)(void(*)(void))os_removexattr, METH_FASTCALL|METH_KEYWORDS, os_removexattr__doc__},
 
 static PyObject *
 os_removexattr_impl(PyObject *module, path_t *path, path_t *attribute,
@@ -5687,7 +5687,7 @@ PyDoc_STRVAR(os_listxattr__doc__,
 "  the link points to.");
 
 #define OS_LISTXATTR_METHODDEF    \
-    {"listxattr", (PyCFunction)os_listxattr, METH_FASTCALL|METH_KEYWORDS, os_listxattr__doc__},
+    {"listxattr", (PyCFunction)(void(*)(void))os_listxattr, METH_FASTCALL|METH_KEYWORDS, os_listxattr__doc__},
 
 static PyObject *
 os_listxattr_impl(PyObject *module, path_t *path, int follow_symlinks);
@@ -5804,7 +5804,7 @@ PyDoc_STRVAR(os_set_inheritable__doc__,
 "Set the inheritable flag of the specified file descriptor.");
 
 #define OS_SET_INHERITABLE_METHODDEF    \
-    {"set_inheritable", (PyCFunction)os_set_inheritable, METH_FASTCALL, os_set_inheritable__doc__},
+    {"set_inheritable", (PyCFunction)(void(*)(void))os_set_inheritable, METH_FASTCALL, os_set_inheritable__doc__},
 
 static PyObject *
 os_set_inheritable_impl(PyObject *module, int fd, int inheritable);
@@ -5871,7 +5871,7 @@ PyDoc_STRVAR(os_set_handle_inheritable__doc__,
 "Set the inheritable flag of the specified handle.");
 
 #define OS_SET_HANDLE_INHERITABLE_METHODDEF    \
-    {"set_handle_inheritable", (PyCFunction)os_set_handle_inheritable, METH_FASTCALL, os_set_handle_inheritable__doc__},
+    {"set_handle_inheritable", (PyCFunction)(void(*)(void))os_set_handle_inheritable, METH_FASTCALL, os_set_handle_inheritable__doc__},
 
 static PyObject *
 os_set_handle_inheritable_impl(PyObject *module, intptr_t handle,
@@ -5946,7 +5946,7 @@ PyDoc_STRVAR(os_set_blocking__doc__,
 "clear the O_NONBLOCK flag otherwise.");
 
 #define OS_SET_BLOCKING_METHODDEF    \
-    {"set_blocking", (PyCFunction)os_set_blocking, METH_FASTCALL, os_set_blocking__doc__},
+    {"set_blocking", (PyCFunction)(void(*)(void))os_set_blocking, METH_FASTCALL, os_set_blocking__doc__},
 
 static PyObject *
 os_set_blocking_impl(PyObject *module, int fd, int blocking);
@@ -6005,7 +6005,7 @@ PyDoc_STRVAR(os_DirEntry_stat__doc__,
 "Return stat_result object for the entry; cached per entry.");
 
 #define OS_DIRENTRY_STAT_METHODDEF    \
-    {"stat", (PyCFunction)os_DirEntry_stat, METH_FASTCALL|METH_KEYWORDS, os_DirEntry_stat__doc__},
+    {"stat", (PyCFunction)(void(*)(void))os_DirEntry_stat, METH_FASTCALL|METH_KEYWORDS, os_DirEntry_stat__doc__},
 
 static PyObject *
 os_DirEntry_stat_impl(DirEntry *self, int follow_symlinks);
@@ -6035,7 +6035,7 @@ PyDoc_STRVAR(os_DirEntry_is_dir__doc__,
 "Return True if the entry is a directory; cached per entry.");
 
 #define OS_DIRENTRY_IS_DIR_METHODDEF    \
-    {"is_dir", (PyCFunction)os_DirEntry_is_dir, METH_FASTCALL|METH_KEYWORDS, os_DirEntry_is_dir__doc__},
+    {"is_dir", (PyCFunction)(void(*)(void))os_DirEntry_is_dir, METH_FASTCALL|METH_KEYWORDS, os_DirEntry_is_dir__doc__},
 
 static int
 os_DirEntry_is_dir_impl(DirEntry *self, int follow_symlinks);
@@ -6070,7 +6070,7 @@ PyDoc_STRVAR(os_DirEntry_is_file__doc__,
 "Return True if the entry is a file; cached per entry.");
 
 #define OS_DIRENTRY_IS_FILE_METHODDEF    \
-    {"is_file", (PyCFunction)os_DirEntry_is_file, METH_FASTCALL|METH_KEYWORDS, os_DirEntry_is_file__doc__},
+    {"is_file", (PyCFunction)(void(*)(void))os_DirEntry_is_file, METH_FASTCALL|METH_KEYWORDS, os_DirEntry_is_file__doc__},
 
 static int
 os_DirEntry_is_file_impl(DirEntry *self, int follow_symlinks);
@@ -6147,7 +6147,7 @@ PyDoc_STRVAR(os_scandir__doc__,
 "If path is None, uses the path=\'.\'.");
 
 #define OS_SCANDIR_METHODDEF    \
-    {"scandir", (PyCFunction)os_scandir, METH_FASTCALL|METH_KEYWORDS, os_scandir__doc__},
+    {"scandir", (PyCFunction)(void(*)(void))os_scandir, METH_FASTCALL|METH_KEYWORDS, os_scandir__doc__},
 
 static PyObject *
 os_scandir_impl(PyObject *module, path_t *path);
@@ -6184,7 +6184,7 @@ PyDoc_STRVAR(os_fspath__doc__,
 "types raise a TypeError.");
 
 #define OS_FSPATH_METHODDEF    \
-    {"fspath", (PyCFunction)os_fspath, METH_FASTCALL|METH_KEYWORDS, os_fspath__doc__},
+    {"fspath", (PyCFunction)(void(*)(void))os_fspath, METH_FASTCALL|METH_KEYWORDS, os_fspath__doc__},
 
 static PyObject *
 os_fspath_impl(PyObject *module, PyObject *path);
@@ -6216,7 +6216,7 @@ PyDoc_STRVAR(os_getrandom__doc__,
 "Obtain a series of random bytes.");
 
 #define OS_GETRANDOM_METHODDEF    \
-    {"getrandom", (PyCFunction)os_getrandom, METH_FASTCALL|METH_KEYWORDS, os_getrandom__doc__},
+    {"getrandom", (PyCFunction)(void(*)(void))os_getrandom, METH_FASTCALL|METH_KEYWORDS, os_getrandom__doc__},
 
 static PyObject *
 os_getrandom_impl(PyObject *module, Py_ssize_t size, int flags);
@@ -6757,4 +6757,4 @@ exit:
 #ifndef OS_GETRANDOM_METHODDEF
     #define OS_GETRANDOM_METHODDEF
 #endif /* !defined(OS_GETRANDOM_METHODDEF) */
-/*[clinic end generated code: output=f2951c34e0907fb6 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=d62c0bb988141e70 input=a9049054013a1b77]*/
diff --git a/Modules/clinic/pyexpat.c.h b/Modules/clinic/pyexpat.c.h
index b7687e5..5e6db44 100644
--- a/Modules/clinic/pyexpat.c.h
+++ b/Modules/clinic/pyexpat.c.h
@@ -11,7 +11,7 @@ PyDoc_STRVAR(pyexpat_xmlparser_Parse__doc__,
 "`isfinal\' should be true at end of input.");
 
 #define PYEXPAT_XMLPARSER_PARSE_METHODDEF    \
-    {"Parse", (PyCFunction)pyexpat_xmlparser_Parse, METH_FASTCALL, pyexpat_xmlparser_Parse__doc__},
+    {"Parse", (PyCFunction)(void(*)(void))pyexpat_xmlparser_Parse, METH_FASTCALL, pyexpat_xmlparser_Parse__doc__},
 
 static PyObject *
 pyexpat_xmlparser_Parse_impl(xmlparseobject *self, PyObject *data,
@@ -116,7 +116,7 @@ PyDoc_STRVAR(pyexpat_xmlparser_ExternalEntityParserCreate__doc__,
 "Create a parser for parsing an external entity based on the information passed to the ExternalEntityRefHandler.");
 
 #define PYEXPAT_XMLPARSER_EXTERNALENTITYPARSERCREATE_METHODDEF    \
-    {"ExternalEntityParserCreate", (PyCFunction)pyexpat_xmlparser_ExternalEntityParserCreate, METH_FASTCALL, pyexpat_xmlparser_ExternalEntityParserCreate__doc__},
+    {"ExternalEntityParserCreate", (PyCFunction)(void(*)(void))pyexpat_xmlparser_ExternalEntityParserCreate, METH_FASTCALL, pyexpat_xmlparser_ExternalEntityParserCreate__doc__},
 
 static PyObject *
 pyexpat_xmlparser_ExternalEntityParserCreate_impl(xmlparseobject *self,
@@ -185,7 +185,7 @@ PyDoc_STRVAR(pyexpat_xmlparser_UseForeignDTD__doc__,
 "information to the parser. \'flag\' defaults to True if not provided.");
 
 #define PYEXPAT_XMLPARSER_USEFOREIGNDTD_METHODDEF    \
-    {"UseForeignDTD", (PyCFunction)pyexpat_xmlparser_UseForeignDTD, METH_FASTCALL, pyexpat_xmlparser_UseForeignDTD__doc__},
+    {"UseForeignDTD", (PyCFunction)(void(*)(void))pyexpat_xmlparser_UseForeignDTD, METH_FASTCALL, pyexpat_xmlparser_UseForeignDTD__doc__},
 
 static PyObject *
 pyexpat_xmlparser_UseForeignDTD_impl(xmlparseobject *self, int flag);
@@ -216,7 +216,7 @@ PyDoc_STRVAR(pyexpat_ParserCreate__doc__,
 "Return a new XML parser object.");
 
 #define PYEXPAT_PARSERCREATE_METHODDEF    \
-    {"ParserCreate", (PyCFunction)pyexpat_ParserCreate, METH_FASTCALL|METH_KEYWORDS, pyexpat_ParserCreate__doc__},
+    {"ParserCreate", (PyCFunction)(void(*)(void))pyexpat_ParserCreate, METH_FASTCALL|METH_KEYWORDS, pyexpat_ParserCreate__doc__},
 
 static PyObject *
 pyexpat_ParserCreate_impl(PyObject *module, const char *encoding,
@@ -272,4 +272,4 @@ exit:
 #ifndef PYEXPAT_XMLPARSER_USEFOREIGNDTD_METHODDEF
     #define PYEXPAT_XMLPARSER_USEFOREIGNDTD_METHODDEF
 #endif /* !defined(PYEXPAT_XMLPARSER_USEFOREIGNDTD_METHODDEF) */
-/*[clinic end generated code: output=6bdf1faf8ba1af32 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=c390207761c679d3 input=a9049054013a1b77]*/
diff --git a/Modules/clinic/resource.c.h b/Modules/clinic/resource.c.h
index 9163cac..cd9fae1 100644
--- a/Modules/clinic/resource.c.h
+++ b/Modules/clinic/resource.c.h
@@ -60,7 +60,7 @@ PyDoc_STRVAR(resource_setrlimit__doc__,
 "\n");
 
 #define RESOURCE_SETRLIMIT_METHODDEF    \
-    {"setrlimit", (PyCFunction)resource_setrlimit, METH_FASTCALL, resource_setrlimit__doc__},
+    {"setrlimit", (PyCFunction)(void(*)(void))resource_setrlimit, METH_FASTCALL, resource_setrlimit__doc__},
 
 static PyObject *
 resource_setrlimit_impl(PyObject *module, int resource, PyObject *limits);
@@ -157,4 +157,4 @@ exit:
 #ifndef RESOURCE_PRLIMIT_METHODDEF
     #define RESOURCE_PRLIMIT_METHODDEF
 #endif /* !defined(RESOURCE_PRLIMIT_METHODDEF) */
-/*[clinic end generated code: output=2a69aca90631a582 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=637ed2c42bde5ca6 input=a9049054013a1b77]*/
diff --git a/Modules/clinic/selectmodule.c.h b/Modules/clinic/selectmodule.c.h
index b87b390..0a53ae2 100644
--- a/Modules/clinic/selectmodule.c.h
+++ b/Modules/clinic/selectmodule.c.h
@@ -30,7 +30,7 @@ PyDoc_STRVAR(select_select__doc__,
 "descriptors can be used.");
 
 #define SELECT_SELECT_METHODDEF    \
-    {"select", (PyCFunction)select_select, METH_FASTCALL, select_select__doc__},
+    {"select", (PyCFunction)(void(*)(void))select_select, METH_FASTCALL, select_select__doc__},
 
 static PyObject *
 select_select_impl(PyObject *module, PyObject *rlist, PyObject *wlist,
@@ -70,7 +70,7 @@ PyDoc_STRVAR(select_poll_register__doc__,
 "    an optional bitmask describing the type of events to check for");
 
 #define SELECT_POLL_REGISTER_METHODDEF    \
-    {"register", (PyCFunction)select_poll_register, METH_FASTCALL, select_poll_register__doc__},
+    {"register", (PyCFunction)(void(*)(void))select_poll_register, METH_FASTCALL, select_poll_register__doc__},
 
 static PyObject *
 select_poll_register_impl(pollObject *self, int fd, unsigned short eventmask);
@@ -109,7 +109,7 @@ PyDoc_STRVAR(select_poll_modify__doc__,
 "    a bitmask describing the type of events to check for");
 
 #define SELECT_POLL_MODIFY_METHODDEF    \
-    {"modify", (PyCFunction)select_poll_modify, METH_FASTCALL, select_poll_modify__doc__},
+    {"modify", (PyCFunction)(void(*)(void))select_poll_modify, METH_FASTCALL, select_poll_modify__doc__},
 
 static PyObject *
 select_poll_modify_impl(pollObject *self, int fd, unsigned short eventmask);
@@ -176,7 +176,7 @@ PyDoc_STRVAR(select_poll_poll__doc__,
 "report, as a list of (fd, event) 2-tuples.");
 
 #define SELECT_POLL_POLL_METHODDEF    \
-    {"poll", (PyCFunction)select_poll_poll, METH_FASTCALL, select_poll_poll__doc__},
+    {"poll", (PyCFunction)(void(*)(void))select_poll_poll, METH_FASTCALL, select_poll_poll__doc__},
 
 static PyObject *
 select_poll_poll_impl(pollObject *self, PyObject *timeout_obj);
@@ -215,7 +215,7 @@ PyDoc_STRVAR(select_devpoll_register__doc__,
 "    an optional bitmask describing the type of events to check for");
 
 #define SELECT_DEVPOLL_REGISTER_METHODDEF    \
-    {"register", (PyCFunction)select_devpoll_register, METH_FASTCALL, select_devpoll_register__doc__},
+    {"register", (PyCFunction)(void(*)(void))select_devpoll_register, METH_FASTCALL, select_devpoll_register__doc__},
 
 static PyObject *
 select_devpoll_register_impl(devpollObject *self, int fd,
@@ -255,7 +255,7 @@ PyDoc_STRVAR(select_devpoll_modify__doc__,
 "    an optional bitmask describing the type of events to check for");
 
 #define SELECT_DEVPOLL_MODIFY_METHODDEF    \
-    {"modify", (PyCFunction)select_devpoll_modify, METH_FASTCALL, select_devpoll_modify__doc__},
+    {"modify", (PyCFunction)(void(*)(void))select_devpoll_modify, METH_FASTCALL, select_devpoll_modify__doc__},
 
 static PyObject *
 select_devpoll_modify_impl(devpollObject *self, int fd,
@@ -323,7 +323,7 @@ PyDoc_STRVAR(select_devpoll_poll__doc__,
 "report, as a list of (fd, event) 2-tuples.");
 
 #define SELECT_DEVPOLL_POLL_METHODDEF    \
-    {"poll", (PyCFunction)select_devpoll_poll, METH_FASTCALL, select_devpoll_poll__doc__},
+    {"poll", (PyCFunction)(void(*)(void))select_devpoll_poll, METH_FASTCALL, select_devpoll_poll__doc__},
 
 static PyObject *
 select_devpoll_poll_impl(devpollObject *self, PyObject *timeout_obj);
@@ -577,7 +577,7 @@ PyDoc_STRVAR(select_epoll_register__doc__,
 "The epoll interface supports all file descriptors that support poll.");
 
 #define SELECT_EPOLL_REGISTER_METHODDEF    \
-    {"register", (PyCFunction)select_epoll_register, METH_FASTCALL|METH_KEYWORDS, select_epoll_register__doc__},
+    {"register", (PyCFunction)(void(*)(void))select_epoll_register, METH_FASTCALL|METH_KEYWORDS, select_epoll_register__doc__},
 
 static PyObject *
 select_epoll_register_impl(pyEpoll_Object *self, int fd,
@@ -618,7 +618,7 @@ PyDoc_STRVAR(select_epoll_modify__doc__,
 "    a bit set composed of the various EPOLL constants");
 
 #define SELECT_EPOLL_MODIFY_METHODDEF    \
-    {"modify", (PyCFunction)select_epoll_modify, METH_FASTCALL|METH_KEYWORDS, select_epoll_modify__doc__},
+    {"modify", (PyCFunction)(void(*)(void))select_epoll_modify, METH_FASTCALL|METH_KEYWORDS, select_epoll_modify__doc__},
 
 static PyObject *
 select_epoll_modify_impl(pyEpoll_Object *self, int fd,
@@ -657,7 +657,7 @@ PyDoc_STRVAR(select_epoll_unregister__doc__,
 "    the target file descriptor of the operation");
 
 #define SELECT_EPOLL_UNREGISTER_METHODDEF    \
-    {"unregister", (PyCFunction)select_epoll_unregister, METH_FASTCALL|METH_KEYWORDS, select_epoll_unregister__doc__},
+    {"unregister", (PyCFunction)(void(*)(void))select_epoll_unregister, METH_FASTCALL|METH_KEYWORDS, select_epoll_unregister__doc__},
 
 static PyObject *
 select_epoll_unregister_impl(pyEpoll_Object *self, int fd);
@@ -700,7 +700,7 @@ PyDoc_STRVAR(select_epoll_poll__doc__,
 "as a list of (fd, events) 2-tuples.");
 
 #define SELECT_EPOLL_POLL_METHODDEF    \
-    {"poll", (PyCFunction)select_epoll_poll, METH_FASTCALL|METH_KEYWORDS, select_epoll_poll__doc__},
+    {"poll", (PyCFunction)(void(*)(void))select_epoll_poll, METH_FASTCALL|METH_KEYWORDS, select_epoll_poll__doc__},
 
 static PyObject *
 select_epoll_poll_impl(pyEpoll_Object *self, PyObject *timeout_obj,
@@ -756,7 +756,7 @@ PyDoc_STRVAR(select_epoll___exit____doc__,
 "\n");
 
 #define SELECT_EPOLL___EXIT___METHODDEF    \
-    {"__exit__", (PyCFunction)select_epoll___exit__, METH_FASTCALL, select_epoll___exit____doc__},
+    {"__exit__", (PyCFunction)(void(*)(void))select_epoll___exit__, METH_FASTCALL, select_epoll___exit____doc__},
 
 static PyObject *
 select_epoll___exit___impl(pyEpoll_Object *self, PyObject *exc_type,
@@ -922,7 +922,7 @@ PyDoc_STRVAR(select_kqueue_control__doc__,
 "    This accepts floats for smaller timeouts, too.");
 
 #define SELECT_KQUEUE_CONTROL_METHODDEF    \
-    {"control", (PyCFunction)select_kqueue_control, METH_FASTCALL, select_kqueue_control__doc__},
+    {"control", (PyCFunction)(void(*)(void))select_kqueue_control, METH_FASTCALL, select_kqueue_control__doc__},
 
 static PyObject *
 select_kqueue_control_impl(kqueue_queue_Object *self, PyObject *changelist,
@@ -1047,4 +1047,4 @@ exit:
 #ifndef SELECT_KQUEUE_CONTROL_METHODDEF
     #define SELECT_KQUEUE_CONTROL_METHODDEF
 #endif /* !defined(SELECT_KQUEUE_CONTROL_METHODDEF) */
-/*[clinic end generated code: output=561bec8bcb0e00c5 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=04c4019eb5a4d464 input=a9049054013a1b77]*/
diff --git a/Modules/clinic/sha1module.c.h b/Modules/clinic/sha1module.c.h
index c84fcba..af29173 100644
--- a/Modules/clinic/sha1module.c.h
+++ b/Modules/clinic/sha1module.c.h
@@ -72,7 +72,7 @@ PyDoc_STRVAR(_sha1_sha1__doc__,
 "Return a new SHA1 hash object; optionally initialized with a string.");
 
 #define _SHA1_SHA1_METHODDEF    \
-    {"sha1", (PyCFunction)_sha1_sha1, METH_FASTCALL|METH_KEYWORDS, _sha1_sha1__doc__},
+    {"sha1", (PyCFunction)(void(*)(void))_sha1_sha1, METH_FASTCALL|METH_KEYWORDS, _sha1_sha1__doc__},
 
 static PyObject *
 _sha1_sha1_impl(PyObject *module, PyObject *string);
@@ -94,4 +94,4 @@ _sha1_sha1(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=81d2424c0585bfd4 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=3bae85313ee5a3b5 input=a9049054013a1b77]*/
diff --git a/Modules/clinic/sha256module.c.h b/Modules/clinic/sha256module.c.h
index 45f78c8..14a88a2 100644
--- a/Modules/clinic/sha256module.c.h
+++ b/Modules/clinic/sha256module.c.h
@@ -72,7 +72,7 @@ PyDoc_STRVAR(_sha256_sha256__doc__,
 "Return a new SHA-256 hash object; optionally initialized with a string.");
 
 #define _SHA256_SHA256_METHODDEF    \
-    {"sha256", (PyCFunction)_sha256_sha256, METH_FASTCALL|METH_KEYWORDS, _sha256_sha256__doc__},
+    {"sha256", (PyCFunction)(void(*)(void))_sha256_sha256, METH_FASTCALL|METH_KEYWORDS, _sha256_sha256__doc__},
 
 static PyObject *
 _sha256_sha256_impl(PyObject *module, PyObject *string);
@@ -102,7 +102,7 @@ PyDoc_STRVAR(_sha256_sha224__doc__,
 "Return a new SHA-224 hash object; optionally initialized with a string.");
 
 #define _SHA256_SHA224_METHODDEF    \
-    {"sha224", (PyCFunction)_sha256_sha224, METH_FASTCALL|METH_KEYWORDS, _sha256_sha224__doc__},
+    {"sha224", (PyCFunction)(void(*)(void))_sha256_sha224, METH_FASTCALL|METH_KEYWORDS, _sha256_sha224__doc__},
 
 static PyObject *
 _sha256_sha224_impl(PyObject *module, PyObject *string);
@@ -124,4 +124,4 @@ _sha256_sha224(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObje
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=0086286cffcbc31c input=a9049054013a1b77]*/
+/*[clinic end generated code: output=fb208641d4bc3b5f input=a9049054013a1b77]*/
diff --git a/Modules/clinic/sha512module.c.h b/Modules/clinic/sha512module.c.h
index 9d3a7c9..7e08701 100644
--- a/Modules/clinic/sha512module.c.h
+++ b/Modules/clinic/sha512module.c.h
@@ -72,7 +72,7 @@ PyDoc_STRVAR(_sha512_sha512__doc__,
 "Return a new SHA-512 hash object; optionally initialized with a string.");
 
 #define _SHA512_SHA512_METHODDEF    \
-    {"sha512", (PyCFunction)_sha512_sha512, METH_FASTCALL|METH_KEYWORDS, _sha512_sha512__doc__},
+    {"sha512", (PyCFunction)(void(*)(void))_sha512_sha512, METH_FASTCALL|METH_KEYWORDS, _sha512_sha512__doc__},
 
 static PyObject *
 _sha512_sha512_impl(PyObject *module, PyObject *string);
@@ -102,7 +102,7 @@ PyDoc_STRVAR(_sha512_sha384__doc__,
 "Return a new SHA-384 hash object; optionally initialized with a string.");
 
 #define _SHA512_SHA384_METHODDEF    \
-    {"sha384", (PyCFunction)_sha512_sha384, METH_FASTCALL|METH_KEYWORDS, _sha512_sha384__doc__},
+    {"sha384", (PyCFunction)(void(*)(void))_sha512_sha384, METH_FASTCALL|METH_KEYWORDS, _sha512_sha384__doc__},
 
 static PyObject *
 _sha512_sha384_impl(PyObject *module, PyObject *string);
@@ -124,4 +124,4 @@ _sha512_sha384(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObje
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=fcc3306fb6672222 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=3706fa47bea06c0b input=a9049054013a1b77]*/
diff --git a/Modules/clinic/signalmodule.c.h b/Modules/clinic/signalmodule.c.h
index 4d7ac38..912f989 100644
--- a/Modules/clinic/signalmodule.c.h
+++ b/Modules/clinic/signalmodule.c.h
@@ -74,7 +74,7 @@ PyDoc_STRVAR(signal_signal__doc__,
 "the first is the signal number, the second is the interrupted stack frame.");
 
 #define SIGNAL_SIGNAL_METHODDEF    \
-    {"signal", (PyCFunction)signal_signal, METH_FASTCALL, signal_signal__doc__},
+    {"signal", (PyCFunction)(void(*)(void))signal_signal, METH_FASTCALL, signal_signal__doc__},
 
 static PyObject *
 signal_signal_impl(PyObject *module, int signalnum, PyObject *handler);
@@ -171,7 +171,7 @@ PyDoc_STRVAR(signal_siginterrupt__doc__,
 "signal sig, else system calls will be interrupted.");
 
 #define SIGNAL_SIGINTERRUPT_METHODDEF    \
-    {"siginterrupt", (PyCFunction)signal_siginterrupt, METH_FASTCALL, signal_siginterrupt__doc__},
+    {"siginterrupt", (PyCFunction)(void(*)(void))signal_siginterrupt, METH_FASTCALL, signal_siginterrupt__doc__},
 
 static PyObject *
 signal_siginterrupt_impl(PyObject *module, int signalnum, int flag);
@@ -209,7 +209,7 @@ PyDoc_STRVAR(signal_setitimer__doc__,
 "Returns old values as a tuple: (delay, interval).");
 
 #define SIGNAL_SETITIMER_METHODDEF    \
-    {"setitimer", (PyCFunction)signal_setitimer, METH_FASTCALL, signal_setitimer__doc__},
+    {"setitimer", (PyCFunction)(void(*)(void))signal_setitimer, METH_FASTCALL, signal_setitimer__doc__},
 
 static PyObject *
 signal_setitimer_impl(PyObject *module, int which, PyObject *seconds,
@@ -275,7 +275,7 @@ PyDoc_STRVAR(signal_pthread_sigmask__doc__,
 "Fetch and/or change the signal mask of the calling thread.");
 
 #define SIGNAL_PTHREAD_SIGMASK_METHODDEF    \
-    {"pthread_sigmask", (PyCFunction)signal_pthread_sigmask, METH_FASTCALL, signal_pthread_sigmask__doc__},
+    {"pthread_sigmask", (PyCFunction)(void(*)(void))signal_pthread_sigmask, METH_FASTCALL, signal_pthread_sigmask__doc__},
 
 static PyObject *
 signal_pthread_sigmask_impl(PyObject *module, int how, sigset_t mask);
@@ -428,7 +428,7 @@ PyDoc_STRVAR(signal_sigtimedwait__doc__,
 "The timeout is specified in seconds, with floating point numbers allowed.");
 
 #define SIGNAL_SIGTIMEDWAIT_METHODDEF    \
-    {"sigtimedwait", (PyCFunction)signal_sigtimedwait, METH_FASTCALL, signal_sigtimedwait__doc__},
+    {"sigtimedwait", (PyCFunction)(void(*)(void))signal_sigtimedwait, METH_FASTCALL, signal_sigtimedwait__doc__},
 
 static PyObject *
 signal_sigtimedwait_impl(PyObject *module, sigset_t sigset,
@@ -462,7 +462,7 @@ PyDoc_STRVAR(signal_pthread_kill__doc__,
 "Send a signal to a thread.");
 
 #define SIGNAL_PTHREAD_KILL_METHODDEF    \
-    {"pthread_kill", (PyCFunction)signal_pthread_kill, METH_FASTCALL, signal_pthread_kill__doc__},
+    {"pthread_kill", (PyCFunction)(void(*)(void))signal_pthread_kill, METH_FASTCALL, signal_pthread_kill__doc__},
 
 static PyObject *
 signal_pthread_kill_impl(PyObject *module, unsigned long thread_id,
@@ -534,4 +534,4 @@ exit:
 #ifndef SIGNAL_PTHREAD_KILL_METHODDEF
     #define SIGNAL_PTHREAD_KILL_METHODDEF
 #endif /* !defined(SIGNAL_PTHREAD_KILL_METHODDEF) */
-/*[clinic end generated code: output=549f0efdc7405834 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=fa0040750f4c1fcb input=a9049054013a1b77]*/
diff --git a/Modules/clinic/symtablemodule.c.h b/Modules/clinic/symtablemodule.c.h
index 6f1e4fe..b5e64e0 100644
--- a/Modules/clinic/symtablemodule.c.h
+++ b/Modules/clinic/symtablemodule.c.h
@@ -9,7 +9,7 @@ PyDoc_STRVAR(_symtable_symtable__doc__,
 "Return symbol and scope dictionaries used internally by compiler.");
 
 #define _SYMTABLE_SYMTABLE_METHODDEF    \
-    {"symtable", (PyCFunction)_symtable_symtable, METH_FASTCALL, _symtable_symtable__doc__},
+    {"symtable", (PyCFunction)(void(*)(void))_symtable_symtable, METH_FASTCALL, _symtable_symtable__doc__},
 
 static PyObject *
 _symtable_symtable_impl(PyObject *module, const char *str,
@@ -32,4 +32,4 @@ _symtable_symtable(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=c18565060a6cae04 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=52ece07dd0e7a113 input=a9049054013a1b77]*/
diff --git a/Modules/clinic/unicodedata.c.h b/Modules/clinic/unicodedata.c.h
index 54021fe..4799fb4 100644
--- a/Modules/clinic/unicodedata.c.h
+++ b/Modules/clinic/unicodedata.c.h
@@ -13,7 +13,7 @@ PyDoc_STRVAR(unicodedata_UCD_decimal__doc__,
 "ValueError is raised.");
 
 #define UNICODEDATA_UCD_DECIMAL_METHODDEF    \
-    {"decimal", (PyCFunction)unicodedata_UCD_decimal, METH_FASTCALL, unicodedata_UCD_decimal__doc__},
+    {"decimal", (PyCFunction)(void(*)(void))unicodedata_UCD_decimal, METH_FASTCALL, unicodedata_UCD_decimal__doc__},
 
 static PyObject *
 unicodedata_UCD_decimal_impl(PyObject *self, int chr,
@@ -47,7 +47,7 @@ PyDoc_STRVAR(unicodedata_UCD_digit__doc__,
 "ValueError is raised.");
 
 #define UNICODEDATA_UCD_DIGIT_METHODDEF    \
-    {"digit", (PyCFunction)unicodedata_UCD_digit, METH_FASTCALL, unicodedata_UCD_digit__doc__},
+    {"digit", (PyCFunction)(void(*)(void))unicodedata_UCD_digit, METH_FASTCALL, unicodedata_UCD_digit__doc__},
 
 static PyObject *
 unicodedata_UCD_digit_impl(PyObject *self, int chr, PyObject *default_value);
@@ -80,7 +80,7 @@ PyDoc_STRVAR(unicodedata_UCD_numeric__doc__,
 "ValueError is raised.");
 
 #define UNICODEDATA_UCD_NUMERIC_METHODDEF    \
-    {"numeric", (PyCFunction)unicodedata_UCD_numeric, METH_FASTCALL, unicodedata_UCD_numeric__doc__},
+    {"numeric", (PyCFunction)(void(*)(void))unicodedata_UCD_numeric, METH_FASTCALL, unicodedata_UCD_numeric__doc__},
 
 static PyObject *
 unicodedata_UCD_numeric_impl(PyObject *self, int chr,
@@ -293,7 +293,7 @@ PyDoc_STRVAR(unicodedata_UCD_is_normalized__doc__,
 "Valid values for form are \'NFC\', \'NFKC\', \'NFD\', and \'NFKD\'.");
 
 #define UNICODEDATA_UCD_IS_NORMALIZED_METHODDEF    \
-    {"is_normalized", (PyCFunction)unicodedata_UCD_is_normalized, METH_FASTCALL, unicodedata_UCD_is_normalized__doc__},
+    {"is_normalized", (PyCFunction)(void(*)(void))unicodedata_UCD_is_normalized, METH_FASTCALL, unicodedata_UCD_is_normalized__doc__},
 
 static PyObject *
 unicodedata_UCD_is_normalized_impl(PyObject *self, PyObject *form,
@@ -325,7 +325,7 @@ PyDoc_STRVAR(unicodedata_UCD_normalize__doc__,
 "Valid values for form are \'NFC\', \'NFKC\', \'NFD\', and \'NFKD\'.");
 
 #define UNICODEDATA_UCD_NORMALIZE_METHODDEF    \
-    {"normalize", (PyCFunction)unicodedata_UCD_normalize, METH_FASTCALL, unicodedata_UCD_normalize__doc__},
+    {"normalize", (PyCFunction)(void(*)(void))unicodedata_UCD_normalize, METH_FASTCALL, unicodedata_UCD_normalize__doc__},
 
 static PyObject *
 unicodedata_UCD_normalize_impl(PyObject *self, PyObject *form,
@@ -358,7 +358,7 @@ PyDoc_STRVAR(unicodedata_UCD_name__doc__,
 "ValueError is raised.");
 
 #define UNICODEDATA_UCD_NAME_METHODDEF    \
-    {"name", (PyCFunction)unicodedata_UCD_name, METH_FASTCALL, unicodedata_UCD_name__doc__},
+    {"name", (PyCFunction)(void(*)(void))unicodedata_UCD_name, METH_FASTCALL, unicodedata_UCD_name__doc__},
 
 static PyObject *
 unicodedata_UCD_name_impl(PyObject *self, int chr, PyObject *default_value);
@@ -411,4 +411,4 @@ unicodedata_UCD_lookup(PyObject *self, PyObject *arg)
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=2c5fbf597c18f6b8 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=67f474927be668bf input=a9049054013a1b77]*/
diff --git a/Modules/clinic/zipimport.c.h b/Modules/clinic/zipimport.c.h
new file mode 100644
index 0000000..aabe7a0
--- /dev/null
+++ b/Modules/clinic/zipimport.c.h
@@ -0,0 +1,325 @@
+/*[clinic input]
+preserve
+[clinic start generated code]*/
+
+PyDoc_STRVAR(zipimport_zipimporter___init____doc__,
+"zipimporter(archivepath, /)\n"
+"--\n"
+"\n"
+"Create a new zipimporter instance.\n"
+"\n"
+"  archivepath\n"
+"    A path-like object to a zipfile, or to a specific path inside\n"
+"    a zipfile.\n"
+"\n"
+"\'archivepath\' must be a path-like object to a zipfile, or to a specific path\n"
+"inside a zipfile. For example, it can be \'/tmp/myimport.zip\', or\n"
+"\'/tmp/myimport.zip/mydirectory\', if mydirectory is a valid directory inside\n"
+"the archive.\n"
+"\n"
+"\'ZipImportError\' is raised if \'archivepath\' doesn\'t point to a valid Zip\n"
+"archive.\n"
+"\n"
+"The \'archive\' attribute of the zipimporter object contains the name of the\n"
+"zipfile targeted.");
+
+static int
+zipimport_zipimporter___init___impl(ZipImporter *self, PyObject *path);
+
+static int
+zipimport_zipimporter___init__(PyObject *self, PyObject *args, PyObject *kwargs)
+{
+    int return_value = -1;
+    PyObject *path;
+
+    if ((Py_TYPE(self) == &ZipImporter_Type) &&
+        !_PyArg_NoKeywords("zipimporter", kwargs)) {
+        goto exit;
+    }
+    if (!PyArg_ParseTuple(args, "O&:zipimporter",
+        PyUnicode_FSDecoder, &path)) {
+        goto exit;
+    }
+    return_value = zipimport_zipimporter___init___impl((ZipImporter *)self, path);
+
+exit:
+    return return_value;
+}
+
+PyDoc_STRVAR(zipimport_zipimporter_find_module__doc__,
+"find_module($self, fullname, path=None, /)\n"
+"--\n"
+"\n"
+"Search for a module specified by \'fullname\'.\n"
+"\n"
+"\'fullname\' must be the fully qualified (dotted) module name. It returns the\n"
+"zipimporter instance itself if the module was found, or None if it wasn\'t.\n"
+"The optional \'path\' argument is ignored -- it\'s there for compatibility\n"
+"with the importer protocol.");
+
+#define ZIPIMPORT_ZIPIMPORTER_FIND_MODULE_METHODDEF    \
+    {"find_module", (PyCFunction)(void *)zipimport_zipimporter_find_module, METH_FASTCALL, zipimport_zipimporter_find_module__doc__},
+
+static PyObject *
+zipimport_zipimporter_find_module_impl(ZipImporter *self, PyObject *fullname,
+                                       PyObject *path);
+
+static PyObject *
+zipimport_zipimporter_find_module(ZipImporter *self, PyObject *const *args, Py_ssize_t nargs)
+{
+    PyObject *return_value = NULL;
+    PyObject *fullname;
+    PyObject *path = Py_None;
+
+    if (!_PyArg_ParseStack(args, nargs, "U|O:find_module",
+        &fullname, &path)) {
+        goto exit;
+    }
+    return_value = zipimport_zipimporter_find_module_impl(self, fullname, path);
+
+exit:
+    return return_value;
+}
+
+PyDoc_STRVAR(zipimport_zipimporter_find_loader__doc__,
+"find_loader($self, fullname, path=None, /)\n"
+"--\n"
+"\n"
+"Search for a module specified by \'fullname\'.\n"
+"\n"
+"\'fullname\' must be the fully qualified (dotted) module name. It returns the\n"
+"zipimporter instance itself if the module was found, a string containing the\n"
+"full path name if it\'s possibly a portion of a namespace package,\n"
+"or None otherwise. The optional \'path\' argument is ignored -- it\'s\n"
+"there for compatibility with the importer protocol.");
+
+#define ZIPIMPORT_ZIPIMPORTER_FIND_LOADER_METHODDEF    \
+    {"find_loader", (PyCFunction)(void *)zipimport_zipimporter_find_loader, METH_FASTCALL, zipimport_zipimporter_find_loader__doc__},
+
+static PyObject *
+zipimport_zipimporter_find_loader_impl(ZipImporter *self, PyObject *fullname,
+                                       PyObject *path);
+
+static PyObject *
+zipimport_zipimporter_find_loader(ZipImporter *self, PyObject *const *args, Py_ssize_t nargs)
+{
+    PyObject *return_value = NULL;
+    PyObject *fullname;
+    PyObject *path = Py_None;
+
+    if (!_PyArg_ParseStack(args, nargs, "U|O:find_loader",
+        &fullname, &path)) {
+        goto exit;
+    }
+    return_value = zipimport_zipimporter_find_loader_impl(self, fullname, path);
+
+exit:
+    return return_value;
+}
+
+PyDoc_STRVAR(zipimport_zipimporter_load_module__doc__,
+"load_module($self, fullname, /)\n"
+"--\n"
+"\n"
+"Load the module specified by \'fullname\'.\n"
+"\n"
+"\'fullname\' must be the fully qualified (dotted) module name. It returns the\n"
+"imported module, or raises ZipImportError if it wasn\'t found.");
+
+#define ZIPIMPORT_ZIPIMPORTER_LOAD_MODULE_METHODDEF    \
+    {"load_module", (PyCFunction)zipimport_zipimporter_load_module, METH_O, zipimport_zipimporter_load_module__doc__},
+
+static PyObject *
+zipimport_zipimporter_load_module_impl(ZipImporter *self, PyObject *fullname);
+
+static PyObject *
+zipimport_zipimporter_load_module(ZipImporter *self, PyObject *arg)
+{
+    PyObject *return_value = NULL;
+    PyObject *fullname;
+
+    if (!PyArg_Parse(arg, "U:load_module", &fullname)) {
+        goto exit;
+    }
+    return_value = zipimport_zipimporter_load_module_impl(self, fullname);
+
+exit:
+    return return_value;
+}
+
+PyDoc_STRVAR(zipimport_zipimporter_get_filename__doc__,
+"get_filename($self, fullname, /)\n"
+"--\n"
+"\n"
+"Return the filename for the specified module.");
+
+#define ZIPIMPORT_ZIPIMPORTER_GET_FILENAME_METHODDEF    \
+    {"get_filename", (PyCFunction)zipimport_zipimporter_get_filename, METH_O, zipimport_zipimporter_get_filename__doc__},
+
+static PyObject *
+zipimport_zipimporter_get_filename_impl(ZipImporter *self,
+                                        PyObject *fullname);
+
+static PyObject *
+zipimport_zipimporter_get_filename(ZipImporter *self, PyObject *arg)
+{
+    PyObject *return_value = NULL;
+    PyObject *fullname;
+
+    if (!PyArg_Parse(arg, "U:get_filename", &fullname)) {
+        goto exit;
+    }
+    return_value = zipimport_zipimporter_get_filename_impl(self, fullname);
+
+exit:
+    return return_value;
+}
+
+PyDoc_STRVAR(zipimport_zipimporter_is_package__doc__,
+"is_package($self, fullname, /)\n"
+"--\n"
+"\n"
+"Return True if the module specified by fullname is a package.\n"
+"\n"
+"Raise ZipImportError if the module couldn\'t be found.");
+
+#define ZIPIMPORT_ZIPIMPORTER_IS_PACKAGE_METHODDEF    \
+    {"is_package", (PyCFunction)zipimport_zipimporter_is_package, METH_O, zipimport_zipimporter_is_package__doc__},
+
+static PyObject *
+zipimport_zipimporter_is_package_impl(ZipImporter *self, PyObject *fullname);
+
+static PyObject *
+zipimport_zipimporter_is_package(ZipImporter *self, PyObject *arg)
+{
+    PyObject *return_value = NULL;
+    PyObject *fullname;
+
+    if (!PyArg_Parse(arg, "U:is_package", &fullname)) {
+        goto exit;
+    }
+    return_value = zipimport_zipimporter_is_package_impl(self, fullname);
+
+exit:
+    return return_value;
+}
+
+PyDoc_STRVAR(zipimport_zipimporter_get_data__doc__,
+"get_data($self, pathname, /)\n"
+"--\n"
+"\n"
+"Return the data associated with \'pathname\'.\n"
+"\n"
+"Raise OSError if the file was not found.");
+
+#define ZIPIMPORT_ZIPIMPORTER_GET_DATA_METHODDEF    \
+    {"get_data", (PyCFunction)zipimport_zipimporter_get_data, METH_O, zipimport_zipimporter_get_data__doc__},
+
+static PyObject *
+zipimport_zipimporter_get_data_impl(ZipImporter *self, PyObject *path);
+
+static PyObject *
+zipimport_zipimporter_get_data(ZipImporter *self, PyObject *arg)
+{
+    PyObject *return_value = NULL;
+    PyObject *path;
+
+    if (!PyArg_Parse(arg, "U:get_data", &path)) {
+        goto exit;
+    }
+    return_value = zipimport_zipimporter_get_data_impl(self, path);
+
+exit:
+    return return_value;
+}
+
+PyDoc_STRVAR(zipimport_zipimporter_get_code__doc__,
+"get_code($self, fullname, /)\n"
+"--\n"
+"\n"
+"Return the code object for the specified module.\n"
+"\n"
+"Raise ZipImportError if the module couldn\'t be found.");
+
+#define ZIPIMPORT_ZIPIMPORTER_GET_CODE_METHODDEF    \
+    {"get_code", (PyCFunction)zipimport_zipimporter_get_code, METH_O, zipimport_zipimporter_get_code__doc__},
+
+static PyObject *
+zipimport_zipimporter_get_code_impl(ZipImporter *self, PyObject *fullname);
+
+static PyObject *
+zipimport_zipimporter_get_code(ZipImporter *self, PyObject *arg)
+{
+    PyObject *return_value = NULL;
+    PyObject *fullname;
+
+    if (!PyArg_Parse(arg, "U:get_code", &fullname)) {
+        goto exit;
+    }
+    return_value = zipimport_zipimporter_get_code_impl(self, fullname);
+
+exit:
+    return return_value;
+}
+
+PyDoc_STRVAR(zipimport_zipimporter_get_source__doc__,
+"get_source($self, fullname, /)\n"
+"--\n"
+"\n"
+"Return the source code for the specified module.\n"
+"\n"
+"Raise ZipImportError if the module couldn\'t be found, return None if the\n"
+"archive does contain the module, but has no source for it.");
+
+#define ZIPIMPORT_ZIPIMPORTER_GET_SOURCE_METHODDEF    \
+    {"get_source", (PyCFunction)zipimport_zipimporter_get_source, METH_O, zipimport_zipimporter_get_source__doc__},
+
+static PyObject *
+zipimport_zipimporter_get_source_impl(ZipImporter *self, PyObject *fullname);
+
+static PyObject *
+zipimport_zipimporter_get_source(ZipImporter *self, PyObject *arg)
+{
+    PyObject *return_value = NULL;
+    PyObject *fullname;
+
+    if (!PyArg_Parse(arg, "U:get_source", &fullname)) {
+        goto exit;
+    }
+    return_value = zipimport_zipimporter_get_source_impl(self, fullname);
+
+exit:
+    return return_value;
+}
+
+PyDoc_STRVAR(zipimport_zipimporter_get_resource_reader__doc__,
+"get_resource_reader($self, fullname, /)\n"
+"--\n"
+"\n"
+"Return the ResourceReader for a package in a zip file.\n"
+"\n"
+"If \'fullname\' is a package within the zip file, return the \'ResourceReader\'\n"
+"object for the package.  Otherwise return None.");
+
+#define ZIPIMPORT_ZIPIMPORTER_GET_RESOURCE_READER_METHODDEF    \
+    {"get_resource_reader", (PyCFunction)zipimport_zipimporter_get_resource_reader, METH_O, zipimport_zipimporter_get_resource_reader__doc__},
+
+static PyObject *
+zipimport_zipimporter_get_resource_reader_impl(ZipImporter *self,
+                                               PyObject *fullname);
+
+static PyObject *
+zipimport_zipimporter_get_resource_reader(ZipImporter *self, PyObject *arg)
+{
+    PyObject *return_value = NULL;
+    PyObject *fullname;
+
+    if (!PyArg_Parse(arg, "U:get_resource_reader", &fullname)) {
+        goto exit;
+    }
+    return_value = zipimport_zipimporter_get_resource_reader_impl(self, fullname);
+
+exit:
+    return return_value;
+}
+/*[clinic end generated code: output=854ce3502180dc1f input=a9049054013a1b77]*/
diff --git a/Modules/clinic/zlibmodule.c.h b/Modules/clinic/zlibmodule.c.h
index 99db052..c5eeab7 100644
--- a/Modules/clinic/zlibmodule.c.h
+++ b/Modules/clinic/zlibmodule.c.h
@@ -14,7 +14,7 @@ PyDoc_STRVAR(zlib_compress__doc__,
 "    Compression level, in 0-9 or -1.");
 
 #define ZLIB_COMPRESS_METHODDEF    \
-    {"compress", (PyCFunction)zlib_compress, METH_FASTCALL|METH_KEYWORDS, zlib_compress__doc__},
+    {"compress", (PyCFunction)(void(*)(void))zlib_compress, METH_FASTCALL|METH_KEYWORDS, zlib_compress__doc__},
 
 static PyObject *
 zlib_compress_impl(PyObject *module, Py_buffer *data, int level);
@@ -57,7 +57,7 @@ PyDoc_STRVAR(zlib_decompress__doc__,
 "    The initial output buffer size.");
 
 #define ZLIB_DECOMPRESS_METHODDEF    \
-    {"decompress", (PyCFunction)zlib_decompress, METH_FASTCALL|METH_KEYWORDS, zlib_decompress__doc__},
+    {"decompress", (PyCFunction)(void(*)(void))zlib_decompress, METH_FASTCALL|METH_KEYWORDS, zlib_decompress__doc__},
 
 static PyObject *
 zlib_decompress_impl(PyObject *module, Py_buffer *data, int wbits,
@@ -119,7 +119,7 @@ PyDoc_STRVAR(zlib_compressobj__doc__,
 "    containing subsequences that are likely to occur in the input data.");
 
 #define ZLIB_COMPRESSOBJ_METHODDEF    \
-    {"compressobj", (PyCFunction)zlib_compressobj, METH_FASTCALL|METH_KEYWORDS, zlib_compressobj__doc__},
+    {"compressobj", (PyCFunction)(void(*)(void))zlib_compressobj, METH_FASTCALL|METH_KEYWORDS, zlib_compressobj__doc__},
 
 static PyObject *
 zlib_compressobj_impl(PyObject *module, int level, int method, int wbits,
@@ -166,7 +166,7 @@ PyDoc_STRVAR(zlib_decompressobj__doc__,
 "    dictionary as used by the compressor that produced the input data.");
 
 #define ZLIB_DECOMPRESSOBJ_METHODDEF    \
-    {"decompressobj", (PyCFunction)zlib_decompressobj, METH_FASTCALL|METH_KEYWORDS, zlib_decompressobj__doc__},
+    {"decompressobj", (PyCFunction)(void(*)(void))zlib_decompressobj, METH_FASTCALL|METH_KEYWORDS, zlib_decompressobj__doc__},
 
 static PyObject *
 zlib_decompressobj_impl(PyObject *module, int wbits, PyObject *zdict);
@@ -247,7 +247,7 @@ PyDoc_STRVAR(zlib_Decompress_decompress__doc__,
 "Call the flush() method to clear these buffers.");
 
 #define ZLIB_DECOMPRESS_DECOMPRESS_METHODDEF    \
-    {"decompress", (PyCFunction)zlib_Decompress_decompress, METH_FASTCALL|METH_KEYWORDS, zlib_Decompress_decompress__doc__},
+    {"decompress", (PyCFunction)(void(*)(void))zlib_Decompress_decompress, METH_FASTCALL|METH_KEYWORDS, zlib_Decompress_decompress__doc__},
 
 static PyObject *
 zlib_Decompress_decompress_impl(compobject *self, Py_buffer *data,
@@ -290,7 +290,7 @@ PyDoc_STRVAR(zlib_Compress_flush__doc__,
 "    can still be compressed.");
 
 #define ZLIB_COMPRESS_FLUSH_METHODDEF    \
-    {"flush", (PyCFunction)zlib_Compress_flush, METH_FASTCALL, zlib_Compress_flush__doc__},
+    {"flush", (PyCFunction)(void(*)(void))zlib_Compress_flush, METH_FASTCALL, zlib_Compress_flush__doc__},
 
 static PyObject *
 zlib_Compress_flush_impl(compobject *self, int mode);
@@ -431,7 +431,7 @@ PyDoc_STRVAR(zlib_Decompress_flush__doc__,
 "    the initial size of the output buffer.");
 
 #define ZLIB_DECOMPRESS_FLUSH_METHODDEF    \
-    {"flush", (PyCFunction)zlib_Decompress_flush, METH_FASTCALL, zlib_Decompress_flush__doc__},
+    {"flush", (PyCFunction)(void(*)(void))zlib_Decompress_flush, METH_FASTCALL, zlib_Decompress_flush__doc__},
 
 static PyObject *
 zlib_Decompress_flush_impl(compobject *self, Py_ssize_t length);
@@ -464,7 +464,7 @@ PyDoc_STRVAR(zlib_adler32__doc__,
 "The returned checksum is an integer.");
 
 #define ZLIB_ADLER32_METHODDEF    \
-    {"adler32", (PyCFunction)zlib_adler32, METH_FASTCALL, zlib_adler32__doc__},
+    {"adler32", (PyCFunction)(void(*)(void))zlib_adler32, METH_FASTCALL, zlib_adler32__doc__},
 
 static PyObject *
 zlib_adler32_impl(PyObject *module, Py_buffer *data, unsigned int value);
@@ -503,7 +503,7 @@ PyDoc_STRVAR(zlib_crc32__doc__,
 "The returned checksum is an integer.");
 
 #define ZLIB_CRC32_METHODDEF    \
-    {"crc32", (PyCFunction)zlib_crc32, METH_FASTCALL, zlib_crc32__doc__},
+    {"crc32", (PyCFunction)(void(*)(void))zlib_crc32, METH_FASTCALL, zlib_crc32__doc__},
 
 static PyObject *
 zlib_crc32_impl(PyObject *module, Py_buffer *data, unsigned int value);
@@ -553,4 +553,4 @@ exit:
 #ifndef ZLIB_DECOMPRESS___DEEPCOPY___METHODDEF
     #define ZLIB_DECOMPRESS___DEEPCOPY___METHODDEF
 #endif /* !defined(ZLIB_DECOMPRESS___DEEPCOPY___METHODDEF) */
-/*[clinic end generated code: output=d46c646770146ade input=a9049054013a1b77]*/
+/*[clinic end generated code: output=e721c15e7af2d2fd input=a9049054013a1b77]*/
diff --git a/Objects/clinic/bytearrayobject.c.h b/Objects/clinic/bytearrayobject.c.h
index d888832..f21353a 100644
--- a/Objects/clinic/bytearrayobject.c.h
+++ b/Objects/clinic/bytearrayobject.c.h
@@ -51,7 +51,7 @@ PyDoc_STRVAR(bytearray_translate__doc__,
 "The remaining characters are mapped through the given translation table.");
 
 #define BYTEARRAY_TRANSLATE_METHODDEF    \
-    {"translate", (PyCFunction)bytearray_translate, METH_FASTCALL|METH_KEYWORDS, bytearray_translate__doc__},
+    {"translate", (PyCFunction)(void(*)(void))bytearray_translate, METH_FASTCALL|METH_KEYWORDS, bytearray_translate__doc__},
 
 static PyObject *
 bytearray_translate_impl(PyByteArrayObject *self, PyObject *table,
@@ -88,7 +88,7 @@ PyDoc_STRVAR(bytearray_maketrans__doc__,
 "The bytes objects frm and to must be of the same length.");
 
 #define BYTEARRAY_MAKETRANS_METHODDEF    \
-    {"maketrans", (PyCFunction)bytearray_maketrans, METH_FASTCALL|METH_STATIC, bytearray_maketrans__doc__},
+    {"maketrans", (PyCFunction)(void(*)(void))bytearray_maketrans, METH_FASTCALL|METH_STATIC, bytearray_maketrans__doc__},
 
 static PyObject *
 bytearray_maketrans_impl(Py_buffer *frm, Py_buffer *to);
@@ -133,7 +133,7 @@ PyDoc_STRVAR(bytearray_replace__doc__,
 "replaced.");
 
 #define BYTEARRAY_REPLACE_METHODDEF    \
-    {"replace", (PyCFunction)bytearray_replace, METH_FASTCALL, bytearray_replace__doc__},
+    {"replace", (PyCFunction)(void(*)(void))bytearray_replace, METH_FASTCALL, bytearray_replace__doc__},
 
 static PyObject *
 bytearray_replace_impl(PyByteArrayObject *self, Py_buffer *old,
@@ -181,7 +181,7 @@ PyDoc_STRVAR(bytearray_split__doc__,
 "    -1 (the default value) means no limit.");
 
 #define BYTEARRAY_SPLIT_METHODDEF    \
-    {"split", (PyCFunction)bytearray_split, METH_FASTCALL|METH_KEYWORDS, bytearray_split__doc__},
+    {"split", (PyCFunction)(void(*)(void))bytearray_split, METH_FASTCALL|METH_KEYWORDS, bytearray_split__doc__},
 
 static PyObject *
 bytearray_split_impl(PyByteArrayObject *self, PyObject *sep,
@@ -256,7 +256,7 @@ PyDoc_STRVAR(bytearray_rsplit__doc__,
 "Splitting is done starting at the end of the bytearray and working to the front.");
 
 #define BYTEARRAY_RSPLIT_METHODDEF    \
-    {"rsplit", (PyCFunction)bytearray_rsplit, METH_FASTCALL|METH_KEYWORDS, bytearray_rsplit__doc__},
+    {"rsplit", (PyCFunction)(void(*)(void))bytearray_rsplit, METH_FASTCALL|METH_KEYWORDS, bytearray_rsplit__doc__},
 
 static PyObject *
 bytearray_rsplit_impl(PyByteArrayObject *self, PyObject *sep,
@@ -311,7 +311,7 @@ PyDoc_STRVAR(bytearray_insert__doc__,
 "    The item to be inserted.");
 
 #define BYTEARRAY_INSERT_METHODDEF    \
-    {"insert", (PyCFunction)bytearray_insert, METH_FASTCALL, bytearray_insert__doc__},
+    {"insert", (PyCFunction)(void(*)(void))bytearray_insert, METH_FASTCALL, bytearray_insert__doc__},
 
 static PyObject *
 bytearray_insert_impl(PyByteArrayObject *self, Py_ssize_t index, int item);
@@ -388,7 +388,7 @@ PyDoc_STRVAR(bytearray_pop__doc__,
 "If no index argument is given, will pop the last item.");
 
 #define BYTEARRAY_POP_METHODDEF    \
-    {"pop", (PyCFunction)bytearray_pop, METH_FASTCALL, bytearray_pop__doc__},
+    {"pop", (PyCFunction)(void(*)(void))bytearray_pop, METH_FASTCALL, bytearray_pop__doc__},
 
 static PyObject *
 bytearray_pop_impl(PyByteArrayObject *self, Py_ssize_t index);
@@ -448,7 +448,7 @@ PyDoc_STRVAR(bytearray_strip__doc__,
 "If the argument is omitted or None, strip leading and trailing ASCII whitespace.");
 
 #define BYTEARRAY_STRIP_METHODDEF    \
-    {"strip", (PyCFunction)bytearray_strip, METH_FASTCALL, bytearray_strip__doc__},
+    {"strip", (PyCFunction)(void(*)(void))bytearray_strip, METH_FASTCALL, bytearray_strip__doc__},
 
 static PyObject *
 bytearray_strip_impl(PyByteArrayObject *self, PyObject *bytes);
@@ -479,7 +479,7 @@ PyDoc_STRVAR(bytearray_lstrip__doc__,
 "If the argument is omitted or None, strip leading ASCII whitespace.");
 
 #define BYTEARRAY_LSTRIP_METHODDEF    \
-    {"lstrip", (PyCFunction)bytearray_lstrip, METH_FASTCALL, bytearray_lstrip__doc__},
+    {"lstrip", (PyCFunction)(void(*)(void))bytearray_lstrip, METH_FASTCALL, bytearray_lstrip__doc__},
 
 static PyObject *
 bytearray_lstrip_impl(PyByteArrayObject *self, PyObject *bytes);
@@ -510,7 +510,7 @@ PyDoc_STRVAR(bytearray_rstrip__doc__,
 "If the argument is omitted or None, strip trailing ASCII whitespace.");
 
 #define BYTEARRAY_RSTRIP_METHODDEF    \
-    {"rstrip", (PyCFunction)bytearray_rstrip, METH_FASTCALL, bytearray_rstrip__doc__},
+    {"rstrip", (PyCFunction)(void(*)(void))bytearray_rstrip, METH_FASTCALL, bytearray_rstrip__doc__},
 
 static PyObject *
 bytearray_rstrip_impl(PyByteArrayObject *self, PyObject *bytes);
@@ -548,7 +548,7 @@ PyDoc_STRVAR(bytearray_decode__doc__,
 "    can handle UnicodeDecodeErrors.");
 
 #define BYTEARRAY_DECODE_METHODDEF    \
-    {"decode", (PyCFunction)bytearray_decode, METH_FASTCALL|METH_KEYWORDS, bytearray_decode__doc__},
+    {"decode", (PyCFunction)(void(*)(void))bytearray_decode, METH_FASTCALL|METH_KEYWORDS, bytearray_decode__doc__},
 
 static PyObject *
 bytearray_decode_impl(PyByteArrayObject *self, const char *encoding,
@@ -596,7 +596,7 @@ PyDoc_STRVAR(bytearray_splitlines__doc__,
 "true.");
 
 #define BYTEARRAY_SPLITLINES_METHODDEF    \
-    {"splitlines", (PyCFunction)bytearray_splitlines, METH_FASTCALL|METH_KEYWORDS, bytearray_splitlines__doc__},
+    {"splitlines", (PyCFunction)(void(*)(void))bytearray_splitlines, METH_FASTCALL|METH_KEYWORDS, bytearray_splitlines__doc__},
 
 static PyObject *
 bytearray_splitlines_impl(PyByteArrayObject *self, int keepends);
@@ -674,7 +674,7 @@ PyDoc_STRVAR(bytearray_reduce_ex__doc__,
 "Return state information for pickling.");
 
 #define BYTEARRAY_REDUCE_EX_METHODDEF    \
-    {"__reduce_ex__", (PyCFunction)bytearray_reduce_ex, METH_FASTCALL, bytearray_reduce_ex__doc__},
+    {"__reduce_ex__", (PyCFunction)(void(*)(void))bytearray_reduce_ex, METH_FASTCALL, bytearray_reduce_ex__doc__},
 
 static PyObject *
 bytearray_reduce_ex_impl(PyByteArrayObject *self, int proto);
@@ -712,4 +712,4 @@ bytearray_sizeof(PyByteArrayObject *self, PyObject *Py_UNUSED(ignored))
 {
     return bytearray_sizeof_impl(self);
 }
-/*[clinic end generated code: output=bb9051a369adb328 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=b88bb192dddca6e1 input=a9049054013a1b77]*/
diff --git a/Objects/clinic/bytesobject.c.h b/Objects/clinic/bytesobject.c.h
index c781948..193d534 100644
--- a/Objects/clinic/bytesobject.c.h
+++ b/Objects/clinic/bytesobject.c.h
@@ -17,7 +17,7 @@ PyDoc_STRVAR(bytes_split__doc__,
 "    -1 (the default value) means no limit.");
 
 #define BYTES_SPLIT_METHODDEF    \
-    {"split", (PyCFunction)bytes_split, METH_FASTCALL|METH_KEYWORDS, bytes_split__doc__},
+    {"split", (PyCFunction)(void(*)(void))bytes_split, METH_FASTCALL|METH_KEYWORDS, bytes_split__doc__},
 
 static PyObject *
 bytes_split_impl(PyBytesObject *self, PyObject *sep, Py_ssize_t maxsplit);
@@ -136,7 +136,7 @@ PyDoc_STRVAR(bytes_rsplit__doc__,
 "Splitting is done starting at the end of the bytes and working to the front.");
 
 #define BYTES_RSPLIT_METHODDEF    \
-    {"rsplit", (PyCFunction)bytes_rsplit, METH_FASTCALL|METH_KEYWORDS, bytes_rsplit__doc__},
+    {"rsplit", (PyCFunction)(void(*)(void))bytes_rsplit, METH_FASTCALL|METH_KEYWORDS, bytes_rsplit__doc__},
 
 static PyObject *
 bytes_rsplit_impl(PyBytesObject *self, PyObject *sep, Py_ssize_t maxsplit);
@@ -184,7 +184,7 @@ PyDoc_STRVAR(bytes_strip__doc__,
 "If the argument is omitted or None, strip leading and trailing ASCII whitespace.");
 
 #define BYTES_STRIP_METHODDEF    \
-    {"strip", (PyCFunction)bytes_strip, METH_FASTCALL, bytes_strip__doc__},
+    {"strip", (PyCFunction)(void(*)(void))bytes_strip, METH_FASTCALL, bytes_strip__doc__},
 
 static PyObject *
 bytes_strip_impl(PyBytesObject *self, PyObject *bytes);
@@ -215,7 +215,7 @@ PyDoc_STRVAR(bytes_lstrip__doc__,
 "If the argument is omitted or None, strip leading  ASCII whitespace.");
 
 #define BYTES_LSTRIP_METHODDEF    \
-    {"lstrip", (PyCFunction)bytes_lstrip, METH_FASTCALL, bytes_lstrip__doc__},
+    {"lstrip", (PyCFunction)(void(*)(void))bytes_lstrip, METH_FASTCALL, bytes_lstrip__doc__},
 
 static PyObject *
 bytes_lstrip_impl(PyBytesObject *self, PyObject *bytes);
@@ -246,7 +246,7 @@ PyDoc_STRVAR(bytes_rstrip__doc__,
 "If the argument is omitted or None, strip trailing ASCII whitespace.");
 
 #define BYTES_RSTRIP_METHODDEF    \
-    {"rstrip", (PyCFunction)bytes_rstrip, METH_FASTCALL, bytes_rstrip__doc__},
+    {"rstrip", (PyCFunction)(void(*)(void))bytes_rstrip, METH_FASTCALL, bytes_rstrip__doc__},
 
 static PyObject *
 bytes_rstrip_impl(PyBytesObject *self, PyObject *bytes);
@@ -281,7 +281,7 @@ PyDoc_STRVAR(bytes_translate__doc__,
 "The remaining characters are mapped through the given translation table.");
 
 #define BYTES_TRANSLATE_METHODDEF    \
-    {"translate", (PyCFunction)bytes_translate, METH_FASTCALL|METH_KEYWORDS, bytes_translate__doc__},
+    {"translate", (PyCFunction)(void(*)(void))bytes_translate, METH_FASTCALL|METH_KEYWORDS, bytes_translate__doc__},
 
 static PyObject *
 bytes_translate_impl(PyBytesObject *self, PyObject *table,
@@ -318,7 +318,7 @@ PyDoc_STRVAR(bytes_maketrans__doc__,
 "The bytes objects frm and to must be of the same length.");
 
 #define BYTES_MAKETRANS_METHODDEF    \
-    {"maketrans", (PyCFunction)bytes_maketrans, METH_FASTCALL|METH_STATIC, bytes_maketrans__doc__},
+    {"maketrans", (PyCFunction)(void(*)(void))bytes_maketrans, METH_FASTCALL|METH_STATIC, bytes_maketrans__doc__},
 
 static PyObject *
 bytes_maketrans_impl(Py_buffer *frm, Py_buffer *to);
@@ -363,7 +363,7 @@ PyDoc_STRVAR(bytes_replace__doc__,
 "replaced.");
 
 #define BYTES_REPLACE_METHODDEF    \
-    {"replace", (PyCFunction)bytes_replace, METH_FASTCALL, bytes_replace__doc__},
+    {"replace", (PyCFunction)(void(*)(void))bytes_replace, METH_FASTCALL, bytes_replace__doc__},
 
 static PyObject *
 bytes_replace_impl(PyBytesObject *self, Py_buffer *old, Py_buffer *new,
@@ -412,7 +412,7 @@ PyDoc_STRVAR(bytes_decode__doc__,
 "    can handle UnicodeDecodeErrors.");
 
 #define BYTES_DECODE_METHODDEF    \
-    {"decode", (PyCFunction)bytes_decode, METH_FASTCALL|METH_KEYWORDS, bytes_decode__doc__},
+    {"decode", (PyCFunction)(void(*)(void))bytes_decode, METH_FASTCALL|METH_KEYWORDS, bytes_decode__doc__},
 
 static PyObject *
 bytes_decode_impl(PyBytesObject *self, const char *encoding,
@@ -447,7 +447,7 @@ PyDoc_STRVAR(bytes_splitlines__doc__,
 "true.");
 
 #define BYTES_SPLITLINES_METHODDEF    \
-    {"splitlines", (PyCFunction)bytes_splitlines, METH_FASTCALL|METH_KEYWORDS, bytes_splitlines__doc__},
+    {"splitlines", (PyCFunction)(void(*)(void))bytes_splitlines, METH_FASTCALL|METH_KEYWORDS, bytes_splitlines__doc__},
 
 static PyObject *
 bytes_splitlines_impl(PyBytesObject *self, int keepends);
@@ -499,4 +499,4 @@ bytes_fromhex(PyTypeObject *type, PyObject *arg)
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=470acd12b2534765 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=07b33ac65362301b input=a9049054013a1b77]*/
diff --git a/Objects/clinic/dictobject.c.h b/Objects/clinic/dictobject.c.h
index 4f4c9fa..5db3a42 100644
--- a/Objects/clinic/dictobject.c.h
+++ b/Objects/clinic/dictobject.c.h
@@ -9,7 +9,7 @@ PyDoc_STRVAR(dict_fromkeys__doc__,
 "Create a new dictionary with keys from iterable and values set to value.");
 
 #define DICT_FROMKEYS_METHODDEF    \
-    {"fromkeys", (PyCFunction)dict_fromkeys, METH_FASTCALL|METH_CLASS, dict_fromkeys__doc__},
+    {"fromkeys", (PyCFunction)(void(*)(void))dict_fromkeys, METH_FASTCALL|METH_CLASS, dict_fromkeys__doc__},
 
 static PyObject *
 dict_fromkeys_impl(PyTypeObject *type, PyObject *iterable, PyObject *value);
@@ -48,7 +48,7 @@ PyDoc_STRVAR(dict_get__doc__,
 "Return the value for key if key is in the dictionary, else default.");
 
 #define DICT_GET_METHODDEF    \
-    {"get", (PyCFunction)dict_get, METH_FASTCALL, dict_get__doc__},
+    {"get", (PyCFunction)(void(*)(void))dict_get, METH_FASTCALL, dict_get__doc__},
 
 static PyObject *
 dict_get_impl(PyDictObject *self, PyObject *key, PyObject *default_value);
@@ -80,7 +80,7 @@ PyDoc_STRVAR(dict_setdefault__doc__,
 "Return the value for key if key is in the dictionary, else default.");
 
 #define DICT_SETDEFAULT_METHODDEF    \
-    {"setdefault", (PyCFunction)dict_setdefault, METH_FASTCALL, dict_setdefault__doc__},
+    {"setdefault", (PyCFunction)(void(*)(void))dict_setdefault, METH_FASTCALL, dict_setdefault__doc__},
 
 static PyObject *
 dict_setdefault_impl(PyDictObject *self, PyObject *key,
@@ -121,4 +121,4 @@ dict___reversed__(PyDictObject *self, PyObject *Py_UNUSED(ignored))
 {
     return dict___reversed___impl(self);
 }
-/*[clinic end generated code: output=b9923851cbd9213a input=a9049054013a1b77]*/
+/*[clinic end generated code: output=193e08cb8099fe22 input=a9049054013a1b77]*/
diff --git a/Objects/clinic/floatobject.c.h b/Objects/clinic/floatobject.c.h
index ac3ff0c..8ff2a2b 100644
--- a/Objects/clinic/floatobject.c.h
+++ b/Objects/clinic/floatobject.c.h
@@ -47,7 +47,7 @@ PyDoc_STRVAR(float___round____doc__,
 "When an argument is passed, work like built-in round(x, ndigits).");
 
 #define FLOAT___ROUND___METHODDEF    \
-    {"__round__", (PyCFunction)float___round__, METH_FASTCALL, float___round____doc__},
+    {"__round__", (PyCFunction)(void(*)(void))float___round__, METH_FASTCALL, float___round____doc__},
 
 static PyObject *
 float___round___impl(PyObject *self, PyObject *o_ndigits);
@@ -256,7 +256,7 @@ PyDoc_STRVAR(float___set_format____doc__,
 "This affects how floats are converted to and from binary strings.");
 
 #define FLOAT___SET_FORMAT___METHODDEF    \
-    {"__set_format__", (PyCFunction)float___set_format__, METH_FASTCALL|METH_CLASS, float___set_format____doc__},
+    {"__set_format__", (PyCFunction)(void(*)(void))float___set_format__, METH_FASTCALL|METH_CLASS, float___set_format____doc__},
 
 static PyObject *
 float___set_format___impl(PyTypeObject *type, const char *typestr,
@@ -305,4 +305,4 @@ float___format__(PyObject *self, PyObject *arg)
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=a3c366a156be61f9 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=091dd499f5386a6c input=a9049054013a1b77]*/
diff --git a/Objects/clinic/listobject.c.h b/Objects/clinic/listobject.c.h
index 63da672..0097481 100644
--- a/Objects/clinic/listobject.c.h
+++ b/Objects/clinic/listobject.c.h
@@ -9,7 +9,7 @@ PyDoc_STRVAR(list_insert__doc__,
 "Insert object before index.");
 
 #define LIST_INSERT_METHODDEF    \
-    {"insert", (PyCFunction)list_insert, METH_FASTCALL, list_insert__doc__},
+    {"insert", (PyCFunction)(void(*)(void))list_insert, METH_FASTCALL, list_insert__doc__},
 
 static PyObject *
 list_insert_impl(PyListObject *self, Py_ssize_t index, PyObject *object);
@@ -94,7 +94,7 @@ PyDoc_STRVAR(list_pop__doc__,
 "Raises IndexError if list is empty or index is out of range.");
 
 #define LIST_POP_METHODDEF    \
-    {"pop", (PyCFunction)list_pop, METH_FASTCALL, list_pop__doc__},
+    {"pop", (PyCFunction)(void(*)(void))list_pop, METH_FASTCALL, list_pop__doc__},
 
 static PyObject *
 list_pop_impl(PyListObject *self, Py_ssize_t index);
@@ -122,7 +122,7 @@ PyDoc_STRVAR(list_sort__doc__,
 "Stable sort *IN PLACE*.");
 
 #define LIST_SORT_METHODDEF    \
-    {"sort", (PyCFunction)list_sort, METH_FASTCALL|METH_KEYWORDS, list_sort__doc__},
+    {"sort", (PyCFunction)(void(*)(void))list_sort, METH_FASTCALL|METH_KEYWORDS, list_sort__doc__},
 
 static PyObject *
 list_sort_impl(PyListObject *self, PyObject *keyfunc, int reverse);
@@ -173,7 +173,7 @@ PyDoc_STRVAR(list_index__doc__,
 "Raises ValueError if the value is not present.");
 
 #define LIST_INDEX_METHODDEF    \
-    {"index", (PyCFunction)list_index, METH_FASTCALL, list_index__doc__},
+    {"index", (PyCFunction)(void(*)(void))list_index, METH_FASTCALL, list_index__doc__},
 
 static PyObject *
 list_index_impl(PyListObject *self, PyObject *value, Py_ssize_t start,
@@ -285,4 +285,4 @@ list___reversed__(PyListObject *self, PyObject *Py_UNUSED(ignored))
 {
     return list___reversed___impl(self);
 }
-/*[clinic end generated code: output=d8cb29e6e6d79844 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=652ae4ee63a9de71 input=a9049054013a1b77]*/
diff --git a/Objects/clinic/longobject.c.h b/Objects/clinic/longobject.c.h
index 0e70fe5..3c33993 100644
--- a/Objects/clinic/longobject.c.h
+++ b/Objects/clinic/longobject.c.h
@@ -167,7 +167,7 @@ PyDoc_STRVAR(int_to_bytes__doc__,
 "    is raised.");
 
 #define INT_TO_BYTES_METHODDEF    \
-    {"to_bytes", (PyCFunction)int_to_bytes, METH_FASTCALL|METH_KEYWORDS, int_to_bytes__doc__},
+    {"to_bytes", (PyCFunction)(void(*)(void))int_to_bytes, METH_FASTCALL|METH_KEYWORDS, int_to_bytes__doc__},
 
 static PyObject *
 int_to_bytes_impl(PyObject *self, Py_ssize_t length, PyObject *byteorder,
@@ -214,7 +214,7 @@ PyDoc_STRVAR(int_from_bytes__doc__,
 "    Indicates whether two\'s complement is used to represent the integer.");
 
 #define INT_FROM_BYTES_METHODDEF    \
-    {"from_bytes", (PyCFunction)int_from_bytes, METH_FASTCALL|METH_KEYWORDS|METH_CLASS, int_from_bytes__doc__},
+    {"from_bytes", (PyCFunction)(void(*)(void))int_from_bytes, METH_FASTCALL|METH_KEYWORDS|METH_CLASS, int_from_bytes__doc__},
 
 static PyObject *
 int_from_bytes_impl(PyTypeObject *type, PyObject *bytes_obj,
@@ -239,4 +239,4 @@ int_from_bytes(PyTypeObject *type, PyObject *const *args, Py_ssize_t nargs, PyOb
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=6d5e92d7dc803751 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=403ccd096555fd1e input=a9049054013a1b77]*/
diff --git a/Objects/clinic/odictobject.c.h b/Objects/clinic/odictobject.c.h
index 15a8bec..1aea36e 100644
--- a/Objects/clinic/odictobject.c.h
+++ b/Objects/clinic/odictobject.c.h
@@ -9,7 +9,7 @@ PyDoc_STRVAR(OrderedDict_fromkeys__doc__,
 "Create a new ordered dictionary with keys from iterable and values set to value.");
 
 #define ORDEREDDICT_FROMKEYS_METHODDEF    \
-    {"fromkeys", (PyCFunction)OrderedDict_fromkeys, METH_FASTCALL|METH_KEYWORDS|METH_CLASS, OrderedDict_fromkeys__doc__},
+    {"fromkeys", (PyCFunction)(void(*)(void))OrderedDict_fromkeys, METH_FASTCALL|METH_KEYWORDS|METH_CLASS, OrderedDict_fromkeys__doc__},
 
 static PyObject *
 OrderedDict_fromkeys_impl(PyTypeObject *type, PyObject *seq, PyObject *value);
@@ -42,7 +42,7 @@ PyDoc_STRVAR(OrderedDict_setdefault__doc__,
 "Return the value for key if key is in the dictionary, else default.");
 
 #define ORDEREDDICT_SETDEFAULT_METHODDEF    \
-    {"setdefault", (PyCFunction)OrderedDict_setdefault, METH_FASTCALL|METH_KEYWORDS, OrderedDict_setdefault__doc__},
+    {"setdefault", (PyCFunction)(void(*)(void))OrderedDict_setdefault, METH_FASTCALL|METH_KEYWORDS, OrderedDict_setdefault__doc__},
 
 static PyObject *
 OrderedDict_setdefault_impl(PyODictObject *self, PyObject *key,
@@ -76,7 +76,7 @@ PyDoc_STRVAR(OrderedDict_popitem__doc__,
 "Pairs are returned in LIFO order if last is true or FIFO order if false.");
 
 #define ORDEREDDICT_POPITEM_METHODDEF    \
-    {"popitem", (PyCFunction)OrderedDict_popitem, METH_FASTCALL|METH_KEYWORDS, OrderedDict_popitem__doc__},
+    {"popitem", (PyCFunction)(void(*)(void))OrderedDict_popitem, METH_FASTCALL|METH_KEYWORDS, OrderedDict_popitem__doc__},
 
 static PyObject *
 OrderedDict_popitem_impl(PyODictObject *self, int last);
@@ -108,7 +108,7 @@ PyDoc_STRVAR(OrderedDict_move_to_end__doc__,
 "Raise KeyError if the element does not exist.");
 
 #define ORDEREDDICT_MOVE_TO_END_METHODDEF    \
-    {"move_to_end", (PyCFunction)OrderedDict_move_to_end, METH_FASTCALL|METH_KEYWORDS, OrderedDict_move_to_end__doc__},
+    {"move_to_end", (PyCFunction)(void(*)(void))OrderedDict_move_to_end, METH_FASTCALL|METH_KEYWORDS, OrderedDict_move_to_end__doc__},
 
 static PyObject *
 OrderedDict_move_to_end_impl(PyODictObject *self, PyObject *key, int last);
@@ -131,4 +131,4 @@ OrderedDict_move_to_end(PyODictObject *self, PyObject *const *args, Py_ssize_t n
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=7f23d569eda2a558 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=f6f189e1fe032e0b input=a9049054013a1b77]*/
diff --git a/Objects/clinic/tupleobject.c.h b/Objects/clinic/tupleobject.c.h
index bef9005..67d9f34 100644
--- a/Objects/clinic/tupleobject.c.h
+++ b/Objects/clinic/tupleobject.c.h
@@ -11,7 +11,7 @@ PyDoc_STRVAR(tuple_index__doc__,
 "Raises ValueError if the value is not present.");
 
 #define TUPLE_INDEX_METHODDEF    \
-    {"index", (PyCFunction)tuple_index, METH_FASTCALL, tuple_index__doc__},
+    {"index", (PyCFunction)(void(*)(void))tuple_index, METH_FASTCALL, tuple_index__doc__},
 
 static PyObject *
 tuple_index_impl(PyTupleObject *self, PyObject *value, Py_ssize_t start,
@@ -95,4 +95,4 @@ tuple___getnewargs__(PyTupleObject *self, PyObject *Py_UNUSED(ignored))
 {
     return tuple___getnewargs___impl(self);
 }
-/*[clinic end generated code: output=0fbf4321fb4365ac input=a9049054013a1b77]*/
+/*[clinic end generated code: output=0a6ebd2d16b09c5d input=a9049054013a1b77]*/
diff --git a/Objects/clinic/unicodeobject.c.h b/Objects/clinic/unicodeobject.c.h
index 2193780..273ae92 100644
--- a/Objects/clinic/unicodeobject.c.h
+++ b/Objects/clinic/unicodeobject.c.h
@@ -71,7 +71,7 @@ PyDoc_STRVAR(unicode_center__doc__,
 "Padding is done using the specified fill character (default is a space).");
 
 #define UNICODE_CENTER_METHODDEF    \
-    {"center", (PyCFunction)unicode_center, METH_FASTCALL, unicode_center__doc__},
+    {"center", (PyCFunction)(void(*)(void))unicode_center, METH_FASTCALL, unicode_center__doc__},
 
 static PyObject *
 unicode_center_impl(PyObject *self, Py_ssize_t width, Py_UCS4 fillchar);
@@ -109,7 +109,7 @@ PyDoc_STRVAR(unicode_encode__doc__,
 "    codecs.register_error that can handle UnicodeEncodeErrors.");
 
 #define UNICODE_ENCODE_METHODDEF    \
-    {"encode", (PyCFunction)unicode_encode, METH_FASTCALL|METH_KEYWORDS, unicode_encode__doc__},
+    {"encode", (PyCFunction)(void(*)(void))unicode_encode, METH_FASTCALL|METH_KEYWORDS, unicode_encode__doc__},
 
 static PyObject *
 unicode_encode_impl(PyObject *self, const char *encoding, const char *errors);
@@ -142,7 +142,7 @@ PyDoc_STRVAR(unicode_expandtabs__doc__,
 "If tabsize is not given, a tab size of 8 characters is assumed.");
 
 #define UNICODE_EXPANDTABS_METHODDEF    \
-    {"expandtabs", (PyCFunction)unicode_expandtabs, METH_FASTCALL|METH_KEYWORDS, unicode_expandtabs__doc__},
+    {"expandtabs", (PyCFunction)(void(*)(void))unicode_expandtabs, METH_FASTCALL|METH_KEYWORDS, unicode_expandtabs__doc__},
 
 static PyObject *
 unicode_expandtabs_impl(PyObject *self, int tabsize);
@@ -440,7 +440,7 @@ PyDoc_STRVAR(unicode_ljust__doc__,
 "Padding is done using the specified fill character (default is a space).");
 
 #define UNICODE_LJUST_METHODDEF    \
-    {"ljust", (PyCFunction)unicode_ljust, METH_FASTCALL, unicode_ljust__doc__},
+    {"ljust", (PyCFunction)(void(*)(void))unicode_ljust, METH_FASTCALL, unicode_ljust__doc__},
 
 static PyObject *
 unicode_ljust_impl(PyObject *self, Py_ssize_t width, Py_UCS4 fillchar);
@@ -489,7 +489,7 @@ PyDoc_STRVAR(unicode_strip__doc__,
 "If chars is given and not None, remove characters in chars instead.");
 
 #define UNICODE_STRIP_METHODDEF    \
-    {"strip", (PyCFunction)unicode_strip, METH_FASTCALL, unicode_strip__doc__},
+    {"strip", (PyCFunction)(void(*)(void))unicode_strip, METH_FASTCALL, unicode_strip__doc__},
 
 static PyObject *
 unicode_strip_impl(PyObject *self, PyObject *chars);
@@ -520,7 +520,7 @@ PyDoc_STRVAR(unicode_lstrip__doc__,
 "If chars is given and not None, remove characters in chars instead.");
 
 #define UNICODE_LSTRIP_METHODDEF    \
-    {"lstrip", (PyCFunction)unicode_lstrip, METH_FASTCALL, unicode_lstrip__doc__},
+    {"lstrip", (PyCFunction)(void(*)(void))unicode_lstrip, METH_FASTCALL, unicode_lstrip__doc__},
 
 static PyObject *
 unicode_lstrip_impl(PyObject *self, PyObject *chars);
@@ -551,7 +551,7 @@ PyDoc_STRVAR(unicode_rstrip__doc__,
 "If chars is given and not None, remove characters in chars instead.");
 
 #define UNICODE_RSTRIP_METHODDEF    \
-    {"rstrip", (PyCFunction)unicode_rstrip, METH_FASTCALL, unicode_rstrip__doc__},
+    {"rstrip", (PyCFunction)(void(*)(void))unicode_rstrip, METH_FASTCALL, unicode_rstrip__doc__},
 
 static PyObject *
 unicode_rstrip_impl(PyObject *self, PyObject *chars);
@@ -587,7 +587,7 @@ PyDoc_STRVAR(unicode_replace__doc__,
 "replaced.");
 
 #define UNICODE_REPLACE_METHODDEF    \
-    {"replace", (PyCFunction)unicode_replace, METH_FASTCALL, unicode_replace__doc__},
+    {"replace", (PyCFunction)(void(*)(void))unicode_replace, METH_FASTCALL, unicode_replace__doc__},
 
 static PyObject *
 unicode_replace_impl(PyObject *self, PyObject *old, PyObject *new,
@@ -620,7 +620,7 @@ PyDoc_STRVAR(unicode_rjust__doc__,
 "Padding is done using the specified fill character (default is a space).");
 
 #define UNICODE_RJUST_METHODDEF    \
-    {"rjust", (PyCFunction)unicode_rjust, METH_FASTCALL, unicode_rjust__doc__},
+    {"rjust", (PyCFunction)(void(*)(void))unicode_rjust, METH_FASTCALL, unicode_rjust__doc__},
 
 static PyObject *
 unicode_rjust_impl(PyObject *self, Py_ssize_t width, Py_UCS4 fillchar);
@@ -657,7 +657,7 @@ PyDoc_STRVAR(unicode_split__doc__,
 "    -1 (the default value) means no limit.");
 
 #define UNICODE_SPLIT_METHODDEF    \
-    {"split", (PyCFunction)unicode_split, METH_FASTCALL|METH_KEYWORDS, unicode_split__doc__},
+    {"split", (PyCFunction)(void(*)(void))unicode_split, METH_FASTCALL|METH_KEYWORDS, unicode_split__doc__},
 
 static PyObject *
 unicode_split_impl(PyObject *self, PyObject *sep, Py_ssize_t maxsplit);
@@ -730,7 +730,7 @@ PyDoc_STRVAR(unicode_rsplit__doc__,
 "Splits are done starting at the end of the string and working to the front.");
 
 #define UNICODE_RSPLIT_METHODDEF    \
-    {"rsplit", (PyCFunction)unicode_rsplit, METH_FASTCALL|METH_KEYWORDS, unicode_rsplit__doc__},
+    {"rsplit", (PyCFunction)(void(*)(void))unicode_rsplit, METH_FASTCALL|METH_KEYWORDS, unicode_rsplit__doc__},
 
 static PyObject *
 unicode_rsplit_impl(PyObject *self, PyObject *sep, Py_ssize_t maxsplit);
@@ -764,7 +764,7 @@ PyDoc_STRVAR(unicode_splitlines__doc__,
 "true.");
 
 #define UNICODE_SPLITLINES_METHODDEF    \
-    {"splitlines", (PyCFunction)unicode_splitlines, METH_FASTCALL|METH_KEYWORDS, unicode_splitlines__doc__},
+    {"splitlines", (PyCFunction)(void(*)(void))unicode_splitlines, METH_FASTCALL|METH_KEYWORDS, unicode_splitlines__doc__},
 
 static PyObject *
 unicode_splitlines_impl(PyObject *self, int keepends);
@@ -820,7 +820,7 @@ PyDoc_STRVAR(unicode_maketrans__doc__,
 "must be a string, whose characters will be mapped to None in the result.");
 
 #define UNICODE_MAKETRANS_METHODDEF    \
-    {"maketrans", (PyCFunction)unicode_maketrans, METH_FASTCALL|METH_STATIC, unicode_maketrans__doc__},
+    {"maketrans", (PyCFunction)(void(*)(void))unicode_maketrans, METH_FASTCALL|METH_STATIC, unicode_maketrans__doc__},
 
 static PyObject *
 unicode_maketrans_impl(PyObject *x, PyObject *y, PyObject *z);
@@ -951,4 +951,4 @@ unicode_sizeof(PyObject *self, PyObject *Py_UNUSED(ignored))
 {
     return unicode_sizeof_impl(self);
 }
-/*[clinic end generated code: output=8bcd992b25733bcc input=a9049054013a1b77]*/
+/*[clinic end generated code: output=d323802b67bfc6d8 input=a9049054013a1b77]*/
diff --git a/Objects/stringlib/clinic/transmogrify.h.h b/Objects/stringlib/clinic/transmogrify.h.h
index 6d26622..fb63060 100644
--- a/Objects/stringlib/clinic/transmogrify.h.h
+++ b/Objects/stringlib/clinic/transmogrify.h.h
@@ -11,7 +11,7 @@ PyDoc_STRVAR(stringlib_expandtabs__doc__,
 "If tabsize is not given, a tab size of 8 characters is assumed.");
 
 #define STRINGLIB_EXPANDTABS_METHODDEF    \
-    {"expandtabs", (PyCFunction)stringlib_expandtabs, METH_FASTCALL|METH_KEYWORDS, stringlib_expandtabs__doc__},
+    {"expandtabs", (PyCFunction)(void(*)(void))stringlib_expandtabs, METH_FASTCALL|METH_KEYWORDS, stringlib_expandtabs__doc__},
 
 static PyObject *
 stringlib_expandtabs_impl(PyObject *self, int tabsize);
@@ -43,7 +43,7 @@ PyDoc_STRVAR(stringlib_ljust__doc__,
 "Padding is done using the specified fill character.");
 
 #define STRINGLIB_LJUST_METHODDEF    \
-    {"ljust", (PyCFunction)stringlib_ljust, METH_FASTCALL, stringlib_ljust__doc__},
+    {"ljust", (PyCFunction)(void(*)(void))stringlib_ljust, METH_FASTCALL, stringlib_ljust__doc__},
 
 static PyObject *
 stringlib_ljust_impl(PyObject *self, Py_ssize_t width, char fillchar);
@@ -74,7 +74,7 @@ PyDoc_STRVAR(stringlib_rjust__doc__,
 "Padding is done using the specified fill character.");
 
 #define STRINGLIB_RJUST_METHODDEF    \
-    {"rjust", (PyCFunction)stringlib_rjust, METH_FASTCALL, stringlib_rjust__doc__},
+    {"rjust", (PyCFunction)(void(*)(void))stringlib_rjust, METH_FASTCALL, stringlib_rjust__doc__},
 
 static PyObject *
 stringlib_rjust_impl(PyObject *self, Py_ssize_t width, char fillchar);
@@ -105,7 +105,7 @@ PyDoc_STRVAR(stringlib_center__doc__,
 "Padding is done using the specified fill character.");
 
 #define STRINGLIB_CENTER_METHODDEF    \
-    {"center", (PyCFunction)stringlib_center, METH_FASTCALL, stringlib_center__doc__},
+    {"center", (PyCFunction)(void(*)(void))stringlib_center, METH_FASTCALL, stringlib_center__doc__},
 
 static PyObject *
 stringlib_center_impl(PyObject *self, Py_ssize_t width, char fillchar);
@@ -155,4 +155,4 @@ stringlib_zfill(PyObject *self, PyObject *arg)
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=336620159a1fc70d input=a9049054013a1b77]*/
+/*[clinic end generated code: output=d09ba158d470566e input=a9049054013a1b77]*/
diff --git a/PC/clinic/_testconsole.c.h b/PC/clinic/_testconsole.c.h
index 8112e78..2809f2a 100644
--- a/PC/clinic/_testconsole.c.h
+++ b/PC/clinic/_testconsole.c.h
@@ -11,7 +11,7 @@ PyDoc_STRVAR(_testconsole_write_input__doc__,
 "Writes UTF-16-LE encoded bytes to the console as if typed by a user.");
 
 #define _TESTCONSOLE_WRITE_INPUT_METHODDEF    \
-    {"write_input", (PyCFunction)_testconsole_write_input, METH_FASTCALL|METH_KEYWORDS, _testconsole_write_input__doc__},
+    {"write_input", (PyCFunction)(void(*)(void))_testconsole_write_input, METH_FASTCALL|METH_KEYWORDS, _testconsole_write_input__doc__},
 
 static PyObject *
 _testconsole_write_input_impl(PyObject *module, PyObject *file,
@@ -47,7 +47,7 @@ PyDoc_STRVAR(_testconsole_read_output__doc__,
 "Reads a str from the console as written to stdout.");
 
 #define _TESTCONSOLE_READ_OUTPUT_METHODDEF    \
-    {"read_output", (PyCFunction)_testconsole_read_output, METH_FASTCALL|METH_KEYWORDS, _testconsole_read_output__doc__},
+    {"read_output", (PyCFunction)(void(*)(void))_testconsole_read_output, METH_FASTCALL|METH_KEYWORDS, _testconsole_read_output__doc__},
 
 static PyObject *
 _testconsole_read_output_impl(PyObject *module, PyObject *file);
@@ -79,4 +79,4 @@ exit:
 #ifndef _TESTCONSOLE_READ_OUTPUT_METHODDEF
     #define _TESTCONSOLE_READ_OUTPUT_METHODDEF
 #endif /* !defined(_TESTCONSOLE_READ_OUTPUT_METHODDEF) */
-/*[clinic end generated code: output=e7dd05a60463c5f0 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=ab9ea8e78d26288e input=a9049054013a1b77]*/
diff --git a/PC/clinic/msvcrtmodule.c.h b/PC/clinic/msvcrtmodule.c.h
index 22ddfea..0466306 100644
--- a/PC/clinic/msvcrtmodule.c.h
+++ b/PC/clinic/msvcrtmodule.c.h
@@ -37,7 +37,7 @@ PyDoc_STRVAR(msvcrt_locking__doc__,
 "individually.");
 
 #define MSVCRT_LOCKING_METHODDEF    \
-    {"locking", (PyCFunction)msvcrt_locking, METH_FASTCALL, msvcrt_locking__doc__},
+    {"locking", (PyCFunction)(void(*)(void))msvcrt_locking, METH_FASTCALL, msvcrt_locking__doc__},
 
 static PyObject *
 msvcrt_locking_impl(PyObject *module, int fd, int mode, long nbytes);
@@ -72,7 +72,7 @@ PyDoc_STRVAR(msvcrt_setmode__doc__,
 "Return value is the previous mode.");
 
 #define MSVCRT_SETMODE_METHODDEF    \
-    {"setmode", (PyCFunction)msvcrt_setmode, METH_FASTCALL, msvcrt_setmode__doc__},
+    {"setmode", (PyCFunction)(void(*)(void))msvcrt_setmode, METH_FASTCALL, msvcrt_setmode__doc__},
 
 static long
 msvcrt_setmode_impl(PyObject *module, int fd, int flags);
@@ -110,7 +110,7 @@ PyDoc_STRVAR(msvcrt_open_osfhandle__doc__,
 "to os.fdopen() to create a file object.");
 
 #define MSVCRT_OPEN_OSFHANDLE_METHODDEF    \
-    {"open_osfhandle", (PyCFunction)msvcrt_open_osfhandle, METH_FASTCALL, msvcrt_open_osfhandle__doc__},
+    {"open_osfhandle", (PyCFunction)(void(*)(void))msvcrt_open_osfhandle, METH_FASTCALL, msvcrt_open_osfhandle__doc__},
 
 static long
 msvcrt_open_osfhandle_impl(PyObject *module, void *handle, int flags);
@@ -424,7 +424,7 @@ PyDoc_STRVAR(msvcrt_CrtSetReportFile__doc__,
 "Only available on Debug builds.");
 
 #define MSVCRT_CRTSETREPORTFILE_METHODDEF    \
-    {"CrtSetReportFile", (PyCFunction)msvcrt_CrtSetReportFile, METH_FASTCALL, msvcrt_CrtSetReportFile__doc__},
+    {"CrtSetReportFile", (PyCFunction)(void(*)(void))msvcrt_CrtSetReportFile, METH_FASTCALL, msvcrt_CrtSetReportFile__doc__},
 
 static void *
 msvcrt_CrtSetReportFile_impl(PyObject *module, int type, void *file);
@@ -464,7 +464,7 @@ PyDoc_STRVAR(msvcrt_CrtSetReportMode__doc__,
 "Only available on Debug builds.");
 
 #define MSVCRT_CRTSETREPORTMODE_METHODDEF    \
-    {"CrtSetReportMode", (PyCFunction)msvcrt_CrtSetReportMode, METH_FASTCALL, msvcrt_CrtSetReportMode__doc__},
+    {"CrtSetReportMode", (PyCFunction)(void(*)(void))msvcrt_CrtSetReportMode, METH_FASTCALL, msvcrt_CrtSetReportMode__doc__},
 
 static long
 msvcrt_CrtSetReportMode_impl(PyObject *module, int type, int mode);
@@ -569,4 +569,4 @@ exit:
 #ifndef MSVCRT_SET_ERROR_MODE_METHODDEF
     #define MSVCRT_SET_ERROR_MODE_METHODDEF
 #endif /* !defined(MSVCRT_SET_ERROR_MODE_METHODDEF) */
-/*[clinic end generated code: output=3dd4cf62afb9771a input=a9049054013a1b77]*/
+/*[clinic end generated code: output=632089ff9236ac77 input=a9049054013a1b77]*/
diff --git a/PC/clinic/winreg.c.h b/PC/clinic/winreg.c.h
index 69781a9..1a53563 100644
--- a/PC/clinic/winreg.c.h
+++ b/PC/clinic/winreg.c.h
@@ -77,7 +77,7 @@ PyDoc_STRVAR(winreg_HKEYType___exit____doc__,
 "\n");
 
 #define WINREG_HKEYTYPE___EXIT___METHODDEF    \
-    {"__exit__", (PyCFunction)winreg_HKEYType___exit__, METH_FASTCALL|METH_KEYWORDS, winreg_HKEYType___exit____doc__},
+    {"__exit__", (PyCFunction)(void(*)(void))winreg_HKEYType___exit__, METH_FASTCALL|METH_KEYWORDS, winreg_HKEYType___exit____doc__},
 
 static PyObject *
 winreg_HKEYType___exit___impl(PyHKEYObject *self, PyObject *exc_type,
@@ -134,7 +134,7 @@ PyDoc_STRVAR(winreg_ConnectRegistry__doc__,
 "If the function fails, an OSError exception is raised.");
 
 #define WINREG_CONNECTREGISTRY_METHODDEF    \
-    {"ConnectRegistry", (PyCFunction)winreg_ConnectRegistry, METH_FASTCALL, winreg_ConnectRegistry__doc__},
+    {"ConnectRegistry", (PyCFunction)(void(*)(void))winreg_ConnectRegistry, METH_FASTCALL, winreg_ConnectRegistry__doc__},
 
 static HKEY
 winreg_ConnectRegistry_impl(PyObject *module, Py_UNICODE *computer_name,
@@ -182,7 +182,7 @@ PyDoc_STRVAR(winreg_CreateKey__doc__,
 "If the function fails, an OSError exception is raised.");
 
 #define WINREG_CREATEKEY_METHODDEF    \
-    {"CreateKey", (PyCFunction)winreg_CreateKey, METH_FASTCALL, winreg_CreateKey__doc__},
+    {"CreateKey", (PyCFunction)(void(*)(void))winreg_CreateKey, METH_FASTCALL, winreg_CreateKey__doc__},
 
 static HKEY
 winreg_CreateKey_impl(PyObject *module, HKEY key, Py_UNICODE *sub_key);
@@ -235,7 +235,7 @@ PyDoc_STRVAR(winreg_CreateKeyEx__doc__,
 "If the function fails, an OSError exception is raised.");
 
 #define WINREG_CREATEKEYEX_METHODDEF    \
-    {"CreateKeyEx", (PyCFunction)winreg_CreateKeyEx, METH_FASTCALL|METH_KEYWORDS, winreg_CreateKeyEx__doc__},
+    {"CreateKeyEx", (PyCFunction)(void(*)(void))winreg_CreateKeyEx, METH_FASTCALL|METH_KEYWORDS, winreg_CreateKeyEx__doc__},
 
 static HKEY
 winreg_CreateKeyEx_impl(PyObject *module, HKEY key, Py_UNICODE *sub_key,
@@ -286,7 +286,7 @@ PyDoc_STRVAR(winreg_DeleteKey__doc__,
 "is removed.  If the function fails, an OSError exception is raised.");
 
 #define WINREG_DELETEKEY_METHODDEF    \
-    {"DeleteKey", (PyCFunction)winreg_DeleteKey, METH_FASTCALL, winreg_DeleteKey__doc__},
+    {"DeleteKey", (PyCFunction)(void(*)(void))winreg_DeleteKey, METH_FASTCALL, winreg_DeleteKey__doc__},
 
 static PyObject *
 winreg_DeleteKey_impl(PyObject *module, HKEY key, Py_UNICODE *sub_key);
@@ -334,7 +334,7 @@ PyDoc_STRVAR(winreg_DeleteKeyEx__doc__,
 "On unsupported Windows versions, NotImplementedError is raised.");
 
 #define WINREG_DELETEKEYEX_METHODDEF    \
-    {"DeleteKeyEx", (PyCFunction)winreg_DeleteKeyEx, METH_FASTCALL|METH_KEYWORDS, winreg_DeleteKeyEx__doc__},
+    {"DeleteKeyEx", (PyCFunction)(void(*)(void))winreg_DeleteKeyEx, METH_FASTCALL|METH_KEYWORDS, winreg_DeleteKeyEx__doc__},
 
 static PyObject *
 winreg_DeleteKeyEx_impl(PyObject *module, HKEY key, Py_UNICODE *sub_key,
@@ -373,7 +373,7 @@ PyDoc_STRVAR(winreg_DeleteValue__doc__,
 "    A string that identifies the value to remove.");
 
 #define WINREG_DELETEVALUE_METHODDEF    \
-    {"DeleteValue", (PyCFunction)winreg_DeleteValue, METH_FASTCALL, winreg_DeleteValue__doc__},
+    {"DeleteValue", (PyCFunction)(void(*)(void))winreg_DeleteValue, METH_FASTCALL, winreg_DeleteValue__doc__},
 
 static PyObject *
 winreg_DeleteValue_impl(PyObject *module, HKEY key, Py_UNICODE *value);
@@ -411,7 +411,7 @@ PyDoc_STRVAR(winreg_EnumKey__doc__,
 "raised, indicating no more values are available.");
 
 #define WINREG_ENUMKEY_METHODDEF    \
-    {"EnumKey", (PyCFunction)winreg_EnumKey, METH_FASTCALL, winreg_EnumKey__doc__},
+    {"EnumKey", (PyCFunction)(void(*)(void))winreg_EnumKey, METH_FASTCALL, winreg_EnumKey__doc__},
 
 static PyObject *
 winreg_EnumKey_impl(PyObject *module, HKEY key, int index);
@@ -458,7 +458,7 @@ PyDoc_STRVAR(winreg_EnumValue__doc__,
 "    An integer that identifies the type of the value data.");
 
 #define WINREG_ENUMVALUE_METHODDEF    \
-    {"EnumValue", (PyCFunction)winreg_EnumValue, METH_FASTCALL, winreg_EnumValue__doc__},
+    {"EnumValue", (PyCFunction)(void(*)(void))winreg_EnumValue, METH_FASTCALL, winreg_EnumValue__doc__},
 
 static PyObject *
 winreg_EnumValue_impl(PyObject *module, HKEY key, int index);
@@ -576,7 +576,7 @@ PyDoc_STRVAR(winreg_LoadKey__doc__,
 "tree.");
 
 #define WINREG_LOADKEY_METHODDEF    \
-    {"LoadKey", (PyCFunction)winreg_LoadKey, METH_FASTCALL, winreg_LoadKey__doc__},
+    {"LoadKey", (PyCFunction)(void(*)(void))winreg_LoadKey, METH_FASTCALL, winreg_LoadKey__doc__},
 
 static PyObject *
 winreg_LoadKey_impl(PyObject *module, HKEY key, Py_UNICODE *sub_key,
@@ -620,7 +620,7 @@ PyDoc_STRVAR(winreg_OpenKey__doc__,
 "If the function fails, an OSError exception is raised.");
 
 #define WINREG_OPENKEY_METHODDEF    \
-    {"OpenKey", (PyCFunction)winreg_OpenKey, METH_FASTCALL|METH_KEYWORDS, winreg_OpenKey__doc__},
+    {"OpenKey", (PyCFunction)(void(*)(void))winreg_OpenKey, METH_FASTCALL|METH_KEYWORDS, winreg_OpenKey__doc__},
 
 static HKEY
 winreg_OpenKey_impl(PyObject *module, HKEY key, Py_UNICODE *sub_key,
@@ -672,7 +672,7 @@ PyDoc_STRVAR(winreg_OpenKeyEx__doc__,
 "If the function fails, an OSError exception is raised.");
 
 #define WINREG_OPENKEYEX_METHODDEF    \
-    {"OpenKeyEx", (PyCFunction)winreg_OpenKeyEx, METH_FASTCALL|METH_KEYWORDS, winreg_OpenKeyEx__doc__},
+    {"OpenKeyEx", (PyCFunction)(void(*)(void))winreg_OpenKeyEx, METH_FASTCALL|METH_KEYWORDS, winreg_OpenKeyEx__doc__},
 
 static HKEY
 winreg_OpenKeyEx_impl(PyObject *module, HKEY key, Py_UNICODE *sub_key,
@@ -761,7 +761,7 @@ PyDoc_STRVAR(winreg_QueryValue__doc__,
 "completeness.");
 
 #define WINREG_QUERYVALUE_METHODDEF    \
-    {"QueryValue", (PyCFunction)winreg_QueryValue, METH_FASTCALL, winreg_QueryValue__doc__},
+    {"QueryValue", (PyCFunction)(void(*)(void))winreg_QueryValue, METH_FASTCALL, winreg_QueryValue__doc__},
 
 static PyObject *
 winreg_QueryValue_impl(PyObject *module, HKEY key, Py_UNICODE *sub_key);
@@ -800,7 +800,7 @@ PyDoc_STRVAR(winreg_QueryValueEx__doc__,
 "The return value is a tuple of the value and the type_id.");
 
 #define WINREG_QUERYVALUEEX_METHODDEF    \
-    {"QueryValueEx", (PyCFunction)winreg_QueryValueEx, METH_FASTCALL, winreg_QueryValueEx__doc__},
+    {"QueryValueEx", (PyCFunction)(void(*)(void))winreg_QueryValueEx, METH_FASTCALL, winreg_QueryValueEx__doc__},
 
 static PyObject *
 winreg_QueryValueEx_impl(PyObject *module, HKEY key, Py_UNICODE *name);
@@ -844,7 +844,7 @@ PyDoc_STRVAR(winreg_SaveKey__doc__,
 "to the API.");
 
 #define WINREG_SAVEKEY_METHODDEF    \
-    {"SaveKey", (PyCFunction)winreg_SaveKey, METH_FASTCALL, winreg_SaveKey__doc__},
+    {"SaveKey", (PyCFunction)(void(*)(void))winreg_SaveKey, METH_FASTCALL, winreg_SaveKey__doc__},
 
 static PyObject *
 winreg_SaveKey_impl(PyObject *module, HKEY key, Py_UNICODE *file_name);
@@ -893,7 +893,7 @@ PyDoc_STRVAR(winreg_SetValue__doc__,
 "KEY_SET_VALUE access.");
 
 #define WINREG_SETVALUE_METHODDEF    \
-    {"SetValue", (PyCFunction)winreg_SetValue, METH_FASTCALL, winreg_SetValue__doc__},
+    {"SetValue", (PyCFunction)(void(*)(void))winreg_SetValue, METH_FASTCALL, winreg_SetValue__doc__},
 
 static PyObject *
 winreg_SetValue_impl(PyObject *module, HKEY key, Py_UNICODE *sub_key,
@@ -964,7 +964,7 @@ PyDoc_STRVAR(winreg_SetValueEx__doc__,
 "the configuration registry to help the registry perform efficiently.");
 
 #define WINREG_SETVALUEEX_METHODDEF    \
-    {"SetValueEx", (PyCFunction)winreg_SetValueEx, METH_FASTCALL, winreg_SetValueEx__doc__},
+    {"SetValueEx", (PyCFunction)(void(*)(void))winreg_SetValueEx, METH_FASTCALL, winreg_SetValueEx__doc__},
 
 static PyObject *
 winreg_SetValueEx_impl(PyObject *module, HKEY key, Py_UNICODE *value_name,
@@ -1091,4 +1091,4 @@ winreg_QueryReflectionKey(PyObject *module, PyObject *arg)
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=d1c8e2678015dd7d input=a9049054013a1b77]*/
+/*[clinic end generated code: output=45a9aec9f9258c0a input=a9049054013a1b77]*/
diff --git a/PC/clinic/winsound.c.h b/PC/clinic/winsound.c.h
index 61be17d..86514f5 100644
--- a/PC/clinic/winsound.c.h
+++ b/PC/clinic/winsound.c.h
@@ -14,7 +14,7 @@ PyDoc_STRVAR(winsound_PlaySound__doc__,
 "    Flag values, ored together.  See module documentation.");
 
 #define WINSOUND_PLAYSOUND_METHODDEF    \
-    {"PlaySound", (PyCFunction)winsound_PlaySound, METH_FASTCALL|METH_KEYWORDS, winsound_PlaySound__doc__},
+    {"PlaySound", (PyCFunction)(void(*)(void))winsound_PlaySound, METH_FASTCALL|METH_KEYWORDS, winsound_PlaySound__doc__},
 
 static PyObject *
 winsound_PlaySound_impl(PyObject *module, PyObject *sound, int flags);
@@ -51,7 +51,7 @@ PyDoc_STRVAR(winsound_Beep__doc__,
 "    How long the sound should play, in milliseconds.");
 
 #define WINSOUND_BEEP_METHODDEF    \
-    {"Beep", (PyCFunction)winsound_Beep, METH_FASTCALL|METH_KEYWORDS, winsound_Beep__doc__},
+    {"Beep", (PyCFunction)(void(*)(void))winsound_Beep, METH_FASTCALL|METH_KEYWORDS, winsound_Beep__doc__},
 
 static PyObject *
 winsound_Beep_impl(PyObject *module, int frequency, int duration);
@@ -84,7 +84,7 @@ PyDoc_STRVAR(winsound_MessageBeep__doc__,
 "x defaults to MB_OK.");
 
 #define WINSOUND_MESSAGEBEEP_METHODDEF    \
-    {"MessageBeep", (PyCFunction)winsound_MessageBeep, METH_FASTCALL|METH_KEYWORDS, winsound_MessageBeep__doc__},
+    {"MessageBeep", (PyCFunction)(void(*)(void))winsound_MessageBeep, METH_FASTCALL|METH_KEYWORDS, winsound_MessageBeep__doc__},
 
 static PyObject *
 winsound_MessageBeep_impl(PyObject *module, int type);
@@ -106,4 +106,4 @@ winsound_MessageBeep(PyObject *module, PyObject *const *args, Py_ssize_t nargs,
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=beeee8be95667b7d input=a9049054013a1b77]*/
+/*[clinic end generated code: output=19e5f0fb15bcd5bc input=a9049054013a1b77]*/
diff --git a/Python/clinic/_warnings.c.h b/Python/clinic/_warnings.c.h
index 68fad23..d1e50de 100644
--- a/Python/clinic/_warnings.c.h
+++ b/Python/clinic/_warnings.c.h
@@ -9,7 +9,7 @@ PyDoc_STRVAR(warnings_warn__doc__,
 "Issue a warning, or maybe ignore it or raise an exception.");
 
 #define WARNINGS_WARN_METHODDEF    \
-    {"warn", (PyCFunction)warnings_warn, METH_FASTCALL|METH_KEYWORDS, warnings_warn__doc__},
+    {"warn", (PyCFunction)(void(*)(void))warnings_warn, METH_FASTCALL|METH_KEYWORDS, warnings_warn__doc__},
 
 static PyObject *
 warnings_warn_impl(PyObject *module, PyObject *message, PyObject *category,
@@ -35,4 +35,4 @@ warnings_warn(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObjec
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=86369ece63001d78 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=a4fbe6e2d1cc2091 input=a9049054013a1b77]*/
diff --git a/Python/clinic/bltinmodule.c.h b/Python/clinic/bltinmodule.c.h
index 121bbd4..4a79861 100644
--- a/Python/clinic/bltinmodule.c.h
+++ b/Python/clinic/bltinmodule.c.h
@@ -82,7 +82,7 @@ PyDoc_STRVAR(builtin_format__doc__,
 "details.");
 
 #define BUILTIN_FORMAT_METHODDEF    \
-    {"format", (PyCFunction)builtin_format, METH_FASTCALL, builtin_format__doc__},
+    {"format", (PyCFunction)(void(*)(void))builtin_format, METH_FASTCALL, builtin_format__doc__},
 
 static PyObject *
 builtin_format_impl(PyObject *module, PyObject *value, PyObject *format_spec);
@@ -150,7 +150,7 @@ PyDoc_STRVAR(builtin_compile__doc__,
 "in addition to any features explicitly specified.");
 
 #define BUILTIN_COMPILE_METHODDEF    \
-    {"compile", (PyCFunction)builtin_compile, METH_FASTCALL|METH_KEYWORDS, builtin_compile__doc__},
+    {"compile", (PyCFunction)(void(*)(void))builtin_compile, METH_FASTCALL|METH_KEYWORDS, builtin_compile__doc__},
 
 static PyObject *
 builtin_compile_impl(PyObject *module, PyObject *source, PyObject *filename,
@@ -187,7 +187,7 @@ PyDoc_STRVAR(builtin_divmod__doc__,
 "Return the tuple (x//y, x%y).  Invariant: div*y + mod == x.");
 
 #define BUILTIN_DIVMOD_METHODDEF    \
-    {"divmod", (PyCFunction)builtin_divmod, METH_FASTCALL, builtin_divmod__doc__},
+    {"divmod", (PyCFunction)(void(*)(void))builtin_divmod, METH_FASTCALL, builtin_divmod__doc__},
 
 static PyObject *
 builtin_divmod_impl(PyObject *module, PyObject *x, PyObject *y);
@@ -223,7 +223,7 @@ PyDoc_STRVAR(builtin_eval__doc__,
 "If only globals is given, locals defaults to it.");
 
 #define BUILTIN_EVAL_METHODDEF    \
-    {"eval", (PyCFunction)builtin_eval, METH_FASTCALL, builtin_eval__doc__},
+    {"eval", (PyCFunction)(void(*)(void))builtin_eval, METH_FASTCALL, builtin_eval__doc__},
 
 static PyObject *
 builtin_eval_impl(PyObject *module, PyObject *source, PyObject *globals,
@@ -261,7 +261,7 @@ PyDoc_STRVAR(builtin_exec__doc__,
 "If only globals is given, locals defaults to it.");
 
 #define BUILTIN_EXEC_METHODDEF    \
-    {"exec", (PyCFunction)builtin_exec, METH_FASTCALL, builtin_exec__doc__},
+    {"exec", (PyCFunction)(void(*)(void))builtin_exec, METH_FASTCALL, builtin_exec__doc__},
 
 static PyObject *
 builtin_exec_impl(PyObject *module, PyObject *source, PyObject *globals,
@@ -316,7 +316,7 @@ PyDoc_STRVAR(builtin_hasattr__doc__,
 "This is done by calling getattr(obj, name) and catching AttributeError.");
 
 #define BUILTIN_HASATTR_METHODDEF    \
-    {"hasattr", (PyCFunction)builtin_hasattr, METH_FASTCALL, builtin_hasattr__doc__},
+    {"hasattr", (PyCFunction)(void(*)(void))builtin_hasattr, METH_FASTCALL, builtin_hasattr__doc__},
 
 static PyObject *
 builtin_hasattr_impl(PyObject *module, PyObject *obj, PyObject *name);
@@ -360,7 +360,7 @@ PyDoc_STRVAR(builtin_setattr__doc__,
 "setattr(x, \'y\', v) is equivalent to ``x.y = v\'\'");
 
 #define BUILTIN_SETATTR_METHODDEF    \
-    {"setattr", (PyCFunction)builtin_setattr, METH_FASTCALL, builtin_setattr__doc__},
+    {"setattr", (PyCFunction)(void(*)(void))builtin_setattr, METH_FASTCALL, builtin_setattr__doc__},
 
 static PyObject *
 builtin_setattr_impl(PyObject *module, PyObject *obj, PyObject *name,
@@ -394,7 +394,7 @@ PyDoc_STRVAR(builtin_delattr__doc__,
 "delattr(x, \'y\') is equivalent to ``del x.y\'\'");
 
 #define BUILTIN_DELATTR_METHODDEF    \
-    {"delattr", (PyCFunction)builtin_delattr, METH_FASTCALL, builtin_delattr__doc__},
+    {"delattr", (PyCFunction)(void(*)(void))builtin_delattr, METH_FASTCALL, builtin_delattr__doc__},
 
 static PyObject *
 builtin_delattr_impl(PyObject *module, PyObject *obj, PyObject *name);
@@ -503,7 +503,7 @@ PyDoc_STRVAR(builtin_pow__doc__,
 "invoked using the three argument form.");
 
 #define BUILTIN_POW_METHODDEF    \
-    {"pow", (PyCFunction)builtin_pow, METH_FASTCALL, builtin_pow__doc__},
+    {"pow", (PyCFunction)(void(*)(void))builtin_pow, METH_FASTCALL, builtin_pow__doc__},
 
 static PyObject *
 builtin_pow_impl(PyObject *module, PyObject *x, PyObject *y, PyObject *z);
@@ -540,7 +540,7 @@ PyDoc_STRVAR(builtin_input__doc__,
 "On *nix systems, readline is used if available.");
 
 #define BUILTIN_INPUT_METHODDEF    \
-    {"input", (PyCFunction)builtin_input, METH_FASTCALL, builtin_input__doc__},
+    {"input", (PyCFunction)(void(*)(void))builtin_input, METH_FASTCALL, builtin_input__doc__},
 
 static PyObject *
 builtin_input_impl(PyObject *module, PyObject *prompt);
@@ -583,7 +583,7 @@ PyDoc_STRVAR(builtin_round__doc__,
 "the return value has the same type as the number.  ndigits may be negative.");
 
 #define BUILTIN_ROUND_METHODDEF    \
-    {"round", (PyCFunction)builtin_round, METH_FASTCALL|METH_KEYWORDS, builtin_round__doc__},
+    {"round", (PyCFunction)(void(*)(void))builtin_round, METH_FASTCALL|METH_KEYWORDS, builtin_round__doc__},
 
 static PyObject *
 builtin_round_impl(PyObject *module, PyObject *number, PyObject *ndigits);
@@ -618,7 +618,7 @@ PyDoc_STRVAR(builtin_sum__doc__,
 "reject non-numeric types.");
 
 #define BUILTIN_SUM_METHODDEF    \
-    {"sum", (PyCFunction)builtin_sum, METH_FASTCALL|METH_KEYWORDS, builtin_sum__doc__},
+    {"sum", (PyCFunction)(void(*)(void))builtin_sum, METH_FASTCALL|METH_KEYWORDS, builtin_sum__doc__},
 
 static PyObject *
 builtin_sum_impl(PyObject *module, PyObject *iterable, PyObject *start);
@@ -653,7 +653,7 @@ PyDoc_STRVAR(builtin_isinstance__doc__,
 "or ...`` etc.");
 
 #define BUILTIN_ISINSTANCE_METHODDEF    \
-    {"isinstance", (PyCFunction)builtin_isinstance, METH_FASTCALL, builtin_isinstance__doc__},
+    {"isinstance", (PyCFunction)(void(*)(void))builtin_isinstance, METH_FASTCALL, builtin_isinstance__doc__},
 
 static PyObject *
 builtin_isinstance_impl(PyObject *module, PyObject *obj,
@@ -688,7 +688,7 @@ PyDoc_STRVAR(builtin_issubclass__doc__,
 "or ...`` etc.");
 
 #define BUILTIN_ISSUBCLASS_METHODDEF    \
-    {"issubclass", (PyCFunction)builtin_issubclass, METH_FASTCALL, builtin_issubclass__doc__},
+    {"issubclass", (PyCFunction)(void(*)(void))builtin_issubclass, METH_FASTCALL, builtin_issubclass__doc__},
 
 static PyObject *
 builtin_issubclass_impl(PyObject *module, PyObject *cls,
@@ -711,4 +711,4 @@ builtin_issubclass(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=eb6d08a32e7c83b6 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=fa8d97ac8695363b input=a9049054013a1b77]*/
diff --git a/Python/clinic/context.c.h b/Python/clinic/context.c.h
index 683b9d7..32b1883 100644
--- a/Python/clinic/context.c.h
+++ b/Python/clinic/context.c.h
@@ -12,7 +12,7 @@ PyDoc_STRVAR(_contextvars_Context_get__doc__,
 "return None.");
 
 #define _CONTEXTVARS_CONTEXT_GET_METHODDEF    \
-    {"get", (PyCFunction)_contextvars_Context_get, METH_FASTCALL, _contextvars_Context_get__doc__},
+    {"get", (PyCFunction)(void(*)(void))_contextvars_Context_get, METH_FASTCALL, _contextvars_Context_get__doc__},
 
 static PyObject *
 _contextvars_Context_get_impl(PyContext *self, PyObject *key,
@@ -123,7 +123,7 @@ PyDoc_STRVAR(_contextvars_ContextVar_get__doc__,
 " * raise a LookupError.");
 
 #define _CONTEXTVARS_CONTEXTVAR_GET_METHODDEF    \
-    {"get", (PyCFunction)_contextvars_ContextVar_get, METH_FASTCALL, _contextvars_ContextVar_get__doc__},
+    {"get", (PyCFunction)(void(*)(void))_contextvars_ContextVar_get, METH_FASTCALL, _contextvars_ContextVar_get__doc__},
 
 static PyObject *
 _contextvars_ContextVar_get_impl(PyContextVar *self, PyObject *default_value);
@@ -170,4 +170,4 @@ PyDoc_STRVAR(_contextvars_ContextVar_reset__doc__,
 
 #define _CONTEXTVARS_CONTEXTVAR_RESET_METHODDEF    \
     {"reset", (PyCFunction)_contextvars_ContextVar_reset, METH_O, _contextvars_ContextVar_reset__doc__},
-/*[clinic end generated code: output=33414d13716d0648 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=9c93e22bcadbaa2b input=a9049054013a1b77]*/
diff --git a/Python/clinic/import.c.h b/Python/clinic/import.c.h
index 27b83ec..1eae8f2 100644
--- a/Python/clinic/import.c.h
+++ b/Python/clinic/import.c.h
@@ -75,7 +75,7 @@ PyDoc_STRVAR(_imp__fix_co_filename__doc__,
 "    File path to use.");
 
 #define _IMP__FIX_CO_FILENAME_METHODDEF    \
-    {"_fix_co_filename", (PyCFunction)_imp__fix_co_filename, METH_FASTCALL, _imp__fix_co_filename__doc__},
+    {"_fix_co_filename", (PyCFunction)(void(*)(void))_imp__fix_co_filename, METH_FASTCALL, _imp__fix_co_filename__doc__},
 
 static PyObject *
 _imp__fix_co_filename_impl(PyObject *module, PyCodeObject *code,
@@ -269,7 +269,7 @@ PyDoc_STRVAR(_imp_create_dynamic__doc__,
 "Create an extension module.");
 
 #define _IMP_CREATE_DYNAMIC_METHODDEF    \
-    {"create_dynamic", (PyCFunction)_imp_create_dynamic, METH_FASTCALL, _imp_create_dynamic__doc__},
+    {"create_dynamic", (PyCFunction)(void(*)(void))_imp_create_dynamic, METH_FASTCALL, _imp_create_dynamic__doc__},
 
 static PyObject *
 _imp_create_dynamic_impl(PyObject *module, PyObject *spec, PyObject *file);
@@ -360,7 +360,7 @@ PyDoc_STRVAR(_imp_source_hash__doc__,
 "\n");
 
 #define _IMP_SOURCE_HASH_METHODDEF    \
-    {"source_hash", (PyCFunction)_imp_source_hash, METH_FASTCALL|METH_KEYWORDS, _imp_source_hash__doc__},
+    {"source_hash", (PyCFunction)(void(*)(void))_imp_source_hash, METH_FASTCALL|METH_KEYWORDS, _imp_source_hash__doc__},
 
 static PyObject *
 _imp_source_hash_impl(PyObject *module, long key, Py_buffer *source);
@@ -396,4 +396,4 @@ exit:
 #ifndef _IMP_EXEC_DYNAMIC_METHODDEF
     #define _IMP_EXEC_DYNAMIC_METHODDEF
 #endif /* !defined(_IMP_EXEC_DYNAMIC_METHODDEF) */
-/*[clinic end generated code: output=f0660cd1de6b3a73 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=ad747b76e105fff2 input=a9049054013a1b77]*/
diff --git a/Python/clinic/marshal.c.h b/Python/clinic/marshal.c.h
index 1ae9332..0df4935 100644
--- a/Python/clinic/marshal.c.h
+++ b/Python/clinic/marshal.c.h
@@ -20,7 +20,7 @@ PyDoc_STRVAR(marshal_dump__doc__,
 "to the file. The object will not be properly read back by load().");
 
 #define MARSHAL_DUMP_METHODDEF    \
-    {"dump", (PyCFunction)marshal_dump, METH_FASTCALL, marshal_dump__doc__},
+    {"dump", (PyCFunction)(void(*)(void))marshal_dump, METH_FASTCALL, marshal_dump__doc__},
 
 static PyObject *
 marshal_dump_impl(PyObject *module, PyObject *value, PyObject *file,
@@ -78,7 +78,7 @@ PyDoc_STRVAR(marshal_dumps__doc__,
 "unsupported type.");
 
 #define MARSHAL_DUMPS_METHODDEF    \
-    {"dumps", (PyCFunction)marshal_dumps, METH_FASTCALL, marshal_dumps__doc__},
+    {"dumps", (PyCFunction)(void(*)(void))marshal_dumps, METH_FASTCALL, marshal_dumps__doc__},
 
 static PyObject *
 marshal_dumps_impl(PyObject *module, PyObject *value, int version);
@@ -134,4 +134,4 @@ exit:
 
     return return_value;
 }
-/*[clinic end generated code: output=584eb2222d86fdc3 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=cbb6128201bee7e0 input=a9049054013a1b77]*/
diff --git a/Python/clinic/sysmodule.c.h b/Python/clinic/sysmodule.c.h
index 3e14805..f9415ae 100644
--- a/Python/clinic/sysmodule.c.h
+++ b/Python/clinic/sysmodule.c.h
@@ -13,7 +13,7 @@ PyDoc_STRVAR(sys_set_coroutine_origin_tracking_depth__doc__,
 "to disable.");
 
 #define SYS_SET_COROUTINE_ORIGIN_TRACKING_DEPTH_METHODDEF    \
-    {"set_coroutine_origin_tracking_depth", (PyCFunction)sys_set_coroutine_origin_tracking_depth, METH_FASTCALL|METH_KEYWORDS, sys_set_coroutine_origin_tracking_depth__doc__},
+    {"set_coroutine_origin_tracking_depth", (PyCFunction)(void(*)(void))sys_set_coroutine_origin_tracking_depth, METH_FASTCALL|METH_KEYWORDS, sys_set_coroutine_origin_tracking_depth__doc__},
 
 static PyObject *
 sys_set_coroutine_origin_tracking_depth_impl(PyObject *module, int depth);
@@ -63,4 +63,4 @@ sys_get_coroutine_origin_tracking_depth(PyObject *module, PyObject *Py_UNUSED(ig
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=4a3ac42b97d710ff input=a9049054013a1b77]*/
+/*[clinic end generated code: output=dfd3eb5b137a9861 input=a9049054013a1b77]*/
diff --git a/Tools/clinic/clinic.py b/Tools/clinic/clinic.py
index ca8096f..2df8071 100755
--- a/Tools/clinic/clinic.py
+++ b/Tools/clinic/clinic.py
@@ -680,7 +680,7 @@ class CLanguage(Language):
 
         methoddef_define = normalize_snippet("""
             #define {methoddef_name}    \\
-                {{"{name}", (PyCFunction){c_basename}, {methoddef_flags}, {c_basename}__doc__}},
+                {{"{name}", {methoddef_cast}{c_basename}, {methoddef_flags}, {c_basename}__doc__}},
             """)
         if new_or_init and not f.docstring:
             docstring_prototype = docstring_definition = ''
@@ -944,10 +944,16 @@ class CLanguage(Language):
                 parser_definition = insert_keywords(parser_definition)
 
 
+        if flags in ('METH_NOARGS', 'METH_O', 'METH_VARARGS'):
+            methoddef_cast = "(PyCFunction)"
+        else:
+            methoddef_cast = "(PyCFunction)(void(*)(void))"
+
         if f.methoddef_flags:
             flags += '|' + f.methoddef_flags
 
         methoddef_define = methoddef_define.replace('{methoddef_flags}', flags)
+        methoddef_define = methoddef_define.replace('{methoddef_cast}', methoddef_cast)
 
         methoddef_ifndef = ''
         conditional = self.cpp.condition()