diff --git a/test/TableGen/ForwardRef.td b/test/TableGen/ForwardRef.td
index 57de9d25c8d..2056b1faff3 100644
--- a/test/TableGen/ForwardRef.td
+++ b/test/TableGen/ForwardRef.td
@@ -4,3 +4,12 @@ class bar {
   list<bar> x;
 }
 
+class foo;
+class foo;
+
+class baz { list<foo> y; }
+
+class foo {
+
+}
+