--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/langtools/test/tools/javac/generics/rare/6665356/T6665356.java	Tue Jan 13 13:28:20 2009 +0000
@@ -0,0 +1,53 @@
+/*
+ * Copyright 2008 Sun Microsystems, Inc.  All Rights Reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ */
+
+/*
+ * @test
+ * @author Maurizio Cimadamore
+ * @bug     6665356
+ * @summary Cast not allowed when both qualifying type and inner class are parameterized
+ * @compile/fail/ref=T6665356.out -XDrawDiagnostics T6665356.java
+ */
+
+class T6665356 {
+    class Outer<S> {
+        class Inner<T> {}
+    }
+
+    void test1() {
+        boolean b;
+        b = null instanceof Outer.Inner;
+        b = null instanceof Outer<?>.Inner;
+        b = null instanceof Outer.Inner<?>;
+        b = null instanceof Outer<?>.Inner<?>;
+    }
+
+    void test2() {
+        boolean b;
+        Object o;
+        o = (Outer.Inner)null;
+        o = (Outer<?>.Inner)null;
+        o = (Outer.Inner<?>)null;
+        o = (Outer<?>.Inner<?>)null;
+    }
+}
\ No newline at end of file