Issue #22570: Renamed Py_SETREF to Py_XSETREF.
diff --git a/Modules/_csv.c b/Modules/_csv.c
index fe85069..d6f2ca8 100644
--- a/Modules/_csv.c
+++ b/Modules/_csv.c
@@ -277,7 +277,7 @@
             if (PyUnicode_READY(src) == -1)
                 return -1;
             Py_INCREF(src);
-            Py_SETREF(*target, src);
+            Py_XSETREF(*target, src);
         }
     }
     return 0;
@@ -783,7 +783,7 @@
 static int
 parse_reset(ReaderObj *self)
 {
-    Py_SETREF(self->fields, PyList_New(0));
+    Py_XSETREF(self->fields, PyList_New(0));
     if (self->fields == NULL)
         return -1;
     self->field_len = 0;