diff -r 90bb32c9921c Objects/genobject.c
--- a/Objects/genobject.c	Sat Aug 20 08:27:06 2016 +0000
+++ b/Objects/genobject.c	Sat Aug 20 11:15:01 2016 +0200
@@ -24,6 +24,13 @@
     PyObject *res;
     PyObject *error_type, *error_value, *error_traceback;
 
+    if (gen->gi_frame == NULL || gen->gi_frame->f_stacktop == NULL)
+        /* Generator isn't paused, so no need to close */
+        return;
+
+    /* Save the current exception, if any. */
+    PyErr_Fetch(&error_type, &error_value, &error_traceback);
+
     /* If `gen` is a coroutine, and if it was never awaited on,
        issue a RuntimeWarning. */
     if (gen->gi_code != NULL
@@ -33,17 +40,12 @@
             && !PyErr_Occurred()
             && PyErr_WarnFormat(PyExc_RuntimeWarning, 1,
                                 "coroutine '%.50S' was never awaited",
-                                gen->gi_qualname))
-        return;
-
-    if (gen->gi_frame == NULL || gen->gi_frame->f_stacktop == NULL)
-        /* Generator isn't paused, so no need to close */
-        return;
-
-    /* Save the current exception, if any. */
-    PyErr_Fetch(&error_type, &error_value, &error_traceback);
-
-    res = gen_close(gen, NULL);
+                                gen->gi_qualname)) {
+        res = NULL;  /* oops, exception */
+    }
+    else {
+        res = gen_close(gen, NULL);
+    }
 
     if (res == NULL)
         PyErr_WriteUnraisable(self);