1 files changed, 4 insertions, 0 deletions
diff --git a/Objects/setobject.c b/Objects/setobject.c
index 022ae8e..18dc49b 100644
--- a/Objects/setobject.c
+++ b/Objects/setobject.c
@@ -1240,6 +1240,10 @@ set_intersection(PySetObject *so, PyObject *other)
         if (rv) {
             if (set_add_entry(result, key, hash))
                 goto error;
+            if (PySet_GET_SIZE(result) >= PySet_GET_SIZE(so)) {
+                Py_DECREF(key);
+                break;
+            }
         }
         Py_DECREF(key);
     }