diff -r fd16c54261b3 -r 90ce3da70b43 jdk/test/java/lang/ClassLoader/LoadNullClass.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/jdk/test/java/lang/ClassLoader/LoadNullClass.java	Sat Dec 01 00:00:00 2007 +0000
@@ -0,0 +1,55 @@
+/*
+ * Copyright 1999 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 4263588 4292814
+ * @summary ClassLoader.loadClass() should not core dump
+ *          on null class names.
+ */
+
+import java.io.File;
+import java.net.URL;
+import java.net.URLClassLoader;
+
+
+public class LoadNullClass {
+    public static void main(String[] args) throws Exception {
+        File f = new File(System.getProperty("test.src", "."));
+        // give the class loader a good but useless url
+        FileClassLoader cl = new FileClassLoader
+            (new URL[]{new URL("file:"+ f.getAbsolutePath())});
+        cl.testFindLoadedClass(null);
+    }
+}
+
+class FileClassLoader extends URLClassLoader {
+
+    public FileClassLoader(URL[] urls) {
+        super(urls);
+    }
+
+    public void testFindLoadedClass(String name) throws Exception {
+        super.findLoadedClass(name);
+    }
+}