--- a/jdk/src/java.desktop/windows/native/libawt/windows/awt_Component.cpp	Mon Oct 05 15:13:14 2015 +0300
+++ b/jdk/src/java.desktop/windows/native/libawt/windows/awt_Component.cpp	Mon Oct 05 15:29:23 2015 +0300
@@ -4058,14 +4058,19 @@
     return (HWND)NULL;
 }
 
-/* Call DefWindowProc for the focus proxy, if any */
+/* Redirects message to the focus proxy, if any */
 void AwtComponent::CallProxyDefWindowProc(UINT message, WPARAM wParam,
     LPARAM lParam, LRESULT &retVal, MsgRouting &mr)
 {
     if (mr != mrConsume)  {
         HWND proxy = GetProxyFocusOwner();
         if (proxy != NULL && ::IsWindowEnabled(proxy)) {
-            retVal = ComCtl32Util::GetInstance().DefWindowProc(NULL, proxy, message, wParam, lParam);
+            if (proxy != GetHWnd()) {
+                retVal = ::SendMessage(proxy, message, wParam, lParam);
+            } else {
+                retVal = ComCtl32Util::GetInstance().DefWindowProc(NULL,
+                                                proxy, message, wParam, lParam);
+            }
             mr = mrConsume;
         }
     }

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/jdk/test/java/awt/Frame/FrameResize/ShowChildWhileResizingTest.java	Mon Oct 05 15:29:23 2015 +0300
@@ -0,0 +1,88 @@
+/*
+ * Copyright (c) 2015 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 8079595
+   @summary Resizing dialog which is JWindow parent makes JVM crash
+   @author Semyon Sadetsky
+  */
+
+import javax.swing.*;
+import java.awt.*;
+import java.awt.event.ActionEvent;
+import java.awt.event.ActionListener;
+import java.awt.event.InputEvent;
+
+public class ShowChildWhileResizingTest {
+
+    private static Window dialog;
+    private static Timer timer;
+    private static Point point;
+
+    public static void main(String[] args) throws Exception {
+        dialog = new Frame();
+        dialog.add(new JPanel());
+        dialog.setVisible(true);
+        dialog.setBounds(100, 100, 200, 200);
+        SwingUtilities.invokeAndWait(new Runnable() {
+            @Override
+            public void run() {
+                final Window dependentWindow = new JWindow(dialog);
+                JPanel panel = new JPanel();
+                panel.add(new JButton("button"));
+                dependentWindow.add(panel);
+                dependentWindow.setVisible(true);
+                dependentWindow.setBounds(0, 0, 50, 50);
+                timer = new Timer(100, new ActionListener() {
+                    @Override
+                    public void actionPerformed(ActionEvent e) {
+                        dependentWindow
+                                .setVisible(!dependentWindow.isVisible());
+                    }
+                });
+                timer.start();
+            }
+
+        });
+
+        Robot robot = new Robot();
+        robot.setAutoDelay(5);
+        robot.delay(300);
+        SwingUtilities.invokeAndWait(new Runnable() {
+            @Override
+            public void run() {
+                point = dialog.getLocationOnScreen();
+            }
+        });
+        robot.mouseMove(point.x + 200 - dialog.getInsets().right/2,
+                point.y + 200 - dialog.getInsets().bottom/2);
+        robot.mousePress(InputEvent.BUTTON1_MASK);
+        for(int i = 0; i < 100; i++) {
+            robot.mouseMove(point.x + 200 + i, point.y + 200 + i);
+        }
+        robot.mouseRelease(InputEvent.BUTTON1_MASK);
+        timer.stop();
+        dialog.dispose();
+        System.out.println("ok");
+    }
+}