coroutines: Error when awaiting on coroutine that's being awaited
Issue #25888
diff --git a/Include/genobject.h b/Include/genobject.h
index 4c71861..30cb023 100644
--- a/Include/genobject.h
+++ b/Include/genobject.h
@@ -43,6 +43,7 @@
PyAPI_FUNC(int) PyGen_NeedsFinalizing(PyGenObject *);
PyAPI_FUNC(int) _PyGen_FetchStopIterationValue(PyObject **);
PyObject *_PyGen_Send(PyGenObject *, PyObject *);
+PyObject *_PyGen_yf(PyGenObject *);
PyAPI_FUNC(void) _PyGen_Finalize(PyObject *self);
#ifndef Py_LIMITED_API