diff -r 000000000000 -r 9a66ca7c79fa test/tools/javac/processing/model/util/TypesBadArg.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/tools/javac/processing/model/util/TypesBadArg.java	Sat Dec 01 00:00:00 2007 +0000
@@ -0,0 +1,112 @@
+/*
+ * Copyright 2006 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     6345812
+ * @summary Validate argument kinds in Types utilities
+ * @author  Scott Seligman
+ * @build   TypesBadArg
+ * @compile -processor TypesBadArg -proc:only TypesBadArg.java
+ */
+
+import java.util.Set;
+import javax.annotation.processing.*;
+import javax.lang.model.element.*;
+import javax.lang.model.type.*;
+import javax.lang.model.util.*;
+
+@SupportedAnnotationTypes("*")
+public class TypesBadArg extends AbstractProcessor {
+
+    boolean success = true;
+
+    public void init(ProcessingEnvironment penv) {
+        super.init(penv);
+    }
+
+    public boolean process(Set<? extends TypeElement> tes,
+                           RoundEnvironment round) {
+        if (round.processingOver()) return true;
+
+        final Elements elements = processingEnv.getElementUtils();
+        final Types types = processingEnv.getTypeUtils();
+
+        final TypeMirror javaLang =
+            elements.getPackageElement("java.lang").asType();
+
+        makeBadCall(new Runnable() {
+            public void run() {
+                types.isSubtype(javaLang, javaLang);
+            }
+        });
+        makeBadCall(new Runnable() {
+            public void run() {
+                types.isAssignable(javaLang, javaLang);
+            }
+        });
+        makeBadCall(new Runnable() {
+            public void run() {
+                types.contains(javaLang, javaLang);
+            }
+        });
+        makeBadCall(new Runnable() {
+            public void run() {
+                types.directSupertypes(javaLang);
+            }
+        });
+        makeBadCall(new Runnable() {
+            public void run() {
+                types.erasure(javaLang);
+            }
+        });
+        makeBadCall(new Runnable() {
+            public void run() {
+                types.capture(javaLang);
+            }
+        });
+        makeBadCall(new Runnable() {
+            public void run() {
+                types.unboxedType(javaLang);
+            }
+        });
+        makeBadCall(new Runnable() {
+            public void run() {
+                types.unboxedType(types.getNoType(TypeKind.VOID));
+            }
+        });
+        if (! success)
+            throw new AssertionError("Some test(s) failed.");
+        return true;
+    }
+
+    private void makeBadCall(Runnable runnable) {
+        try {
+            runnable.run();
+            System.out.println("Failure: IllegalArgumentException expected");
+            success = false;
+        } catch (IllegalArgumentException e) {
+            System.out.println("IllegalArgumentException as expected");
+        }
+    }
+}