diff --git a/tests/basics/tests/class-subclass-builtin.py b/tests/basics/tests/class-subclass-builtin.py
new file mode 100644
index 0000000000..7eb7d44b4d
--- /dev/null
+++ b/tests/basics/tests/class-subclass-builtin.py
@@ -0,0 +1,6 @@
+#class mylist(list):
+#    pass
+
+#l = mylist()
+#l.append(1)
+#print(l)