backport

diff --git a/Modules/_csv.c b/Modules/_csv.c
index 32806d484dc92269dac79d8b21cc69a473116f00..044ea4b51aa41cfb978d8451158515e84ed05aff 100644 (file)
--- a/Modules/_csv.c
+++ b/Modules/_csv.c
@@ -1545,6 +1545,7 @@ init_csv(void)
        }
 
         /* Add the Dialect type */
+       Py_INCREF(&Dialect_Type);
         if (PyModule_AddObject(module, "Dialect", (PyObject *)&Dialect_Type))
                 return;