commit 762f93ff2efd6b7ef0177cad57939c0ab2002eac
author Jeroen Demeyer <J.Demeyer@UGent.be> Mon Jul 08 10:19:25 2019 +0200
committer Inada Naoki <songofacandy@gmail.com> Mon Jul 08 17:19:25 2019 +0900
tree 4811b08fa9342c3b2575de7e7c1030d1d5eea8a0
parent 38f44b4a4adc37e8f5f8971917d8b3145f351a56

bpo-37337: Add _PyObject_CallMethodNoArgs() (GH-14267)

Modules/_io/stringio.c

diff --git a/Modules/_io/stringio.c b/Modules/_io/stringio.c
index 9e9724d..810cad6 100644
--- a/Modules/_io/stringio.c
+++ b/Modules/_io/stringio.c
@@ -408,8 +408,8 @@
     }
     else {
         /* XXX is subclassing StringIO really supported? */
-        line = PyObject_CallMethodObjArgs((PyObject *)self,
-                                           _PyIO_str_readline, NULL);
+        line = _PyObject_CallMethodNoArgs((PyObject *)self,
+                                             _PyIO_str_readline);
         if (line && !PyUnicode_Check(line)) {
             PyErr_Format(PyExc_OSError,
                          "readline() should have returned a str object, "