diff -r 9d8c7669df64 -r 38a70273507b langtools/test/tools/javac/generics/inference/6650759/T6650759c.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/langtools/test/tools/javac/generics/inference/6650759/T6650759c.java	Tue Sep 01 14:53:39 2009 +0100
@@ -0,0 +1,49 @@
+/*
+ * Copyright 2009 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
+ * @bug     6650759
+ * @summary Inference of formal type parameter (unused in formal parameters) is not performed
+ * @compile T6650759c.java
+ */
+
+import java.util.Collection;
+import java.util.Collections;
+
+public class T6650759c {
+
+  static interface A {}
+
+  static interface B<X extends A> {}
+
+  static interface C<X extends A, Y extends B<X>> {}
+
+  public static <T extends A, U extends B<T>> Collection<C<T,U>> get(U u) {
+    return null;
+  }
+
+  public <T extends A, U extends B<T>> Collection<C<T,U>> test(U u) {
+    return Collections.unmodifiableCollection(get(u));
+  }
+}