--- a/jdk/src/macosx/classes/sun/lwawt/macosx/CWarningWindow.java	Fri Apr 25 16:27:30 2014 +0400
+++ b/jdk/src/macosx/classes/sun/lwawt/macosx/CWarningWindow.java	Fri Apr 25 16:39:13 2014 +0400
@@ -309,6 +309,10 @@
     @Override
     public void dispose() {
         cancelTasks();
+        SurfaceData surfaceData = contentView.getSurfaceData();
+        if (surfaceData != null) {
+            surfaceData.invalidate();
+        }
         super.dispose();
     }
 

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/jdk/test/java/awt/security/WarningWindowDisposeTest/WarningWindowDisposeCrashTest.java	Fri Apr 25 16:39:13 2014 +0400
@@ -0,0 +1,54 @@
+/*
+ * Copyright (c) 2014, Oracle and/or its affiliates. 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/*
+  @test
+  @bug 8041490
+  @summary tests that the WarningWindow's surface is invalidated on dispose
+  @author Petr Pchelko
+  @run main/othervm WarningWindowDisposeCrashTest
+*/
+
+
+import sun.applet.AppletSecurity;
+import sun.awt.SunToolkit;
+
+import java.awt.*;
+
+public class WarningWindowDisposeCrashTest {
+    public static void main(String[] args) throws Exception {
+        System.setSecurityManager(new AppletSecurity() {
+            @Override
+            public void checkPackageAccess (String s){
+            }
+        });
+
+        Frame f = new Frame();
+        f.setVisible(true);
+        ((SunToolkit) Toolkit.getDefaultToolkit()).realSync();
+        Thread.sleep(1000);
+        f.dispose();
+        // If the bug is present VM could crash after this call
+        for (int i = 0; i < 1000; i++) Toolkit.getDefaultToolkit().sync();
+    }
+}