diff -r fd16c54261b3 -r 06bc494ca11e langtools/test/tools/javac/api/6452876/T6452876.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/langtools/test/tools/javac/api/6452876/T6452876.java	Sat Dec 01 00:00:00 2007 +0000
@@ -0,0 +1,45 @@
+/*
+ * 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     6452876
+ * @summary JSR 199: DiagnosticCollector.report(null) should throw NPE
+ * @author  Peter von der Ah\u00e9
+ * @library ../lib
+ * @compile T6452876.java
+ * @run main T6452876
+ */
+
+import javax.tools.DiagnosticCollector;
+
+public class T6452876 {
+    public static void main(String... args) {
+        try {
+            new DiagnosticCollector<Object>().report(null);
+        } catch (NullPointerException npe) {
+            return;
+        }
+        throw new AssertionError("Expected NPE not thrown");
+    }
+}