--- a/src/share/classes/java/awt/Dialog.java	Mon Jun 18 16:41:28 2012 +0400
+++ b/src/share/classes/java/awt/Dialog.java	Mon Jun 18 20:18:00 2012 +0400
@@ -1037,7 +1037,7 @@
                 predictedFocusOwner = getMostRecentFocusOwner();
                 if (conditionalShow(predictedFocusOwner, time)) {
                     modalFilter = ModalEventFilter.createFilterForDialog(this);
-                    Conditional cond = new Conditional() {
+                    final Conditional cond = new Conditional() {
                         @Override
                         public boolean evaluate() {
                             return windowClosingException == null;
@@ -1067,7 +1067,12 @@
 
                     modalityPushed();
                     try {
-                        EventQueue eventQueue = Toolkit.getDefaultToolkit().getSystemEventQueue();
+                        final EventQueue eventQueue = AccessController.doPrivileged(
+                            new PrivilegedAction<EventQueue>() {
+                                public EventQueue run() {
+                                    return Toolkit.getDefaultToolkit().getSystemEventQueue();
+                                }
+                        });
                         secondaryLoop = eventQueue.createSecondaryLoop(cond, modalFilter, 0);
                         if (!secondaryLoop.enter()) {
                             secondaryLoop = null;

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/java/awt/Dialog/ModalDialogPermission/ModalDialogPermission.java	Mon Jun 18 20:18:00 2012 +0400
@@ -0,0 +1,60 @@
+/*
+ * Copyright (c) 2012, 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.
+ */
+
+import java.awt.Dialog;
+import java.awt.Frame;
+import java.util.Timer;
+import java.util.TimerTask;
+
+/*
+  @test
+  @bug 7080109
+  @summary Dialog.show() lacks doPrivileged() to access system event queue.
+  @author sergey.bylokhov@oracle.com: area=awt.dialog
+  @run main/othervm/policy=java.policy -Djava.security.manager ModalDialogPermission
+*/
+public final class ModalDialogPermission {
+
+    public static void main(final String[] args) {
+        Thread.setDefaultUncaughtExceptionHandler(new Thread.UncaughtExceptionHandler() {
+            @Override
+            public void uncaughtException(final Thread t, final Throwable e) {
+                throw new RuntimeException(e);
+            }
+        });
+        final Frame frame = new Frame();
+        final Dialog dialog = new Dialog(frame, "ModalDialog", true);
+        final Timer t = new Timer();
+        t.schedule(new TimerTask() {
+
+            @Override
+            public void run() {
+                dialog.setVisible(false);
+                dialog.dispose();
+            }
+        }, 3000L);
+        dialog.show();
+        frame.dispose();
+        t.cancel();
+    }
+}

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/java/awt/Dialog/ModalDialogPermission/java.policy	Mon Jun 18 20:18:00 2012 +0400
@@ -0,0 +1,3 @@
+grant {
+    permission java.lang.RuntimePermission "setDefaultUncaughtExceptionHandler";
+};