diff -r 000000000000 -r 9a66ca7c79fa test/tools/javac/api/6420464/T6420464.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/tools/javac/api/6420464/T6420464.java	Sat Dec 01 00:00:00 2007 +0000
@@ -0,0 +1,52 @@
+/*
+ * 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     6420464
+ * @summary JSR 199: JavaFileObject.isNameCompatible throws unspecified exception (IllegalArgumentException)
+ * @author  Igor Tseytin
+ */
+
+import javax.tools.*;
+import java.io.*;
+import java.util.Collections;
+
+public class T6420464 {
+    static final File test_src     = new File(System.getProperty("test.src"));
+    static final File test_classes = new File(System.getProperty("test.classes"));
+
+    public static void main(String... args) throws IOException {
+        JavaCompiler compiler = ToolProvider.getSystemJavaCompiler();
+        StandardJavaFileManager mgr = compiler.getStandardFileManager(null, null, null);
+        mgr.setLocation(StandardLocation.SOURCE_PATH, Collections.singleton(test_src));
+        JavaFileObject f = mgr.getJavaFileForInput(StandardLocation.SOURCE_PATH,
+                                                   "T6420464",
+                                                   JavaFileObject.Kind.SOURCE);
+        if (!f.isNameCompatible("T6420464", JavaFileObject.Kind.SOURCE))
+            throw new AssertionError("isNameCompatible(SOURCE) fails on " + f.toUri());
+        if (f.isNameCompatible("T6420464", JavaFileObject.Kind.OTHER))
+            throw new AssertionError("isNameCompatible(OTHER) fails on " + f.toUri());
+        System.out.println("OK");
+    }
+}