Issue #25923: Added more const qualifiers to signatures of static and private functions.
diff --git a/Modules/_datetimemodule.c b/Modules/_datetimemodule.c
index e8b7ae8..3e5e195 100644
--- a/Modules/_datetimemodule.c
+++ b/Modules/_datetimemodule.c
@@ -873,7 +873,7 @@
* this returns NULL. Else result is returned.
*/
static PyObject *
-call_tzinfo_method(PyObject *tzinfo, char *name, PyObject *tzinfoarg)
+call_tzinfo_method(PyObject *tzinfo, const char *name, PyObject *tzinfoarg)
{
PyObject *offset;