bpo-33012: Fix invalid function cast warnings with gcc 8 for METH_NOARGS. (GH-6030)

METH_NOARGS functions need only a single argument but they are cast
into a PyCFunction, which takes two arguments.  This triggers an
invalid function cast warning in gcc8 due to the argument mismatch.
Fix this by adding a dummy unused argument.

1 files changed, 3 insertions, 3 deletions

diff --git a/Objects/fileobject.c b/Objects/fileobject.c
index 0f71944d52..db788a9ecc 100644
--- a/Objects/fileobject.c
+++ b/Objects/fileobject.c
@@ -398,7 +398,7 @@ stdprinter_write(PyStdPrinter_Object *self, PyObject *args)
 }
 
 static PyObject *
-stdprinter_fileno(PyStdPrinter_Object *self)
+stdprinter_fileno(PyStdPrinter_Object *self, PyObject *Py_UNUSED(ignored))
 {
     return PyLong_FromLong((long) self->fd);
 }
@@ -411,13 +411,13 @@ stdprinter_repr(PyStdPrinter_Object *self)
 }
 
 static PyObject *
-stdprinter_noop(PyStdPrinter_Object *self)
+stdprinter_noop(PyStdPrinter_Object *self, PyObject *Py_UNUSED(ignored))
 {
     Py_RETURN_NONE;
 }
 
 static PyObject *
-stdprinter_isatty(PyStdPrinter_Object *self)
+stdprinter_isatty(PyStdPrinter_Object *self, PyObject *Py_UNUSED(ignored))
 {
     long res;
     if (self->fd < 0) {