--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/langtools/tools/javac/patterns/ReifiableOld.java	Wed Nov 27 09:00:01 2019 +0100
@@ -0,0 +1,24 @@
+/*
+ * @test /nodynamiccopyright/
+ * @bug 8231827
+ * @summary Verify behavior w.r.t. non-reifiable types in instanceof
+ * @compile/fail/ref=ReifiableOld-old.out -source 13 -Xlint:-options -XDrawDiagnostics ReifiableOld.java
+ * @compile/fail/ref=ReifiableOld-old.out -source ${jdk.version} -XDrawDiagnostics ReifiableOld.java
+ * @compile/fail/ref=ReifiableOld.out --enable-preview -source ${jdk.version} -XDrawDiagnostics ReifiableOld.java
+ */
+
+public class ReifiableOld implements ReifiableOldI {
+    private static boolean test(Object o, List<ReifiableOld> l1, List<String> l2) {
+        return o instanceof ListImpl<ReifiableOld> &&
+               l1 instanceof ListImpl<ReifiableOld> &&
+               l2 instanceof ListImpl<ReifiableOld> &&
+               l2 instanceof ListImpl<String> &&
+               l1 instanceof Unrelated<ReifiableOld>;
+    }
+
+    public class List<T> {}
+    public class ListImpl<T extends ReifiableOldI> extends List<T> {}
+    public class Unrelated<T> {}
+}
+
+interface ReifiableOldI {}