From adfffc7343ce7ebc88ec734a803d3247ba8927fb Mon Sep 17 00:00:00 2001
From: Serhiy Storchaka <storchaka@gmail.com>
Date: Tue, 5 Mar 2019 18:41:09 +0200
Subject: Fix the C function signature for
 _collections._tuplegetter.__reduce__. (GH-12180)

Correctly fixes bpo-36197.
---
 Modules/_collectionsmodule.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/Modules/_collectionsmodule.c b/Modules/_collectionsmodule.c
index afd2731..8fb5fc2 100644
--- a/Modules/_collectionsmodule.c
+++ b/Modules/_collectionsmodule.c
@@ -2441,7 +2441,7 @@ tuplegetter_dealloc(_tuplegetterobject *self)
 }
 
 static PyObject*
-tuplegetter_reduce(_tuplegetterobject *self)
+tuplegetter_reduce(_tuplegetterobject *self, PyObject *Py_UNUSED(ignored))
 {
     return Py_BuildValue("(O(nO))", (PyObject*) Py_TYPE(self), self->index, self->doc);
 }
@@ -2453,7 +2453,7 @@ static PyMemberDef tuplegetter_members[] = {
 };
 
 static PyMethodDef tuplegetter_methods[] = {
-    {"__reduce__", (PyCFunction)(void(*)(void))tuplegetter_reduce, METH_NOARGS, NULL},
+    {"__reduce__", (PyCFunction)tuplegetter_reduce, METH_NOARGS, NULL},
     {NULL},
 };
 
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