# HG changeset patch
# User dav
# Date 1307473104 -14400
# Node ID ae731399e525fe98fac7d7871b5db3f18ac035c0
# Parent  39de8937c1d854cd625466afd1383a0913aacd3a
7048568: Crash in Java_sun_awt_Win32GraphicsEnvironment_isVistaOS
Reviewed-by: dcherepanov, art, amenkov

diff -r 39de8937c1d8 -r ae731399e525 src/windows/native/sun/windows/awt_Win32GraphicsDevice.cpp
--- a/src/windows/native/sun/windows/awt_Win32GraphicsDevice.cpp	Thu Jun 02 13:38:28 2011 -0700
+++ b/src/windows/native/sun/windows/awt_Win32GraphicsDevice.cpp	Tue Jun 07 22:58:24 2011 +0400
@@ -673,6 +673,12 @@
  */
 void AwtWin32GraphicsDevice::ResetAllMonitorInfo()
 {
+    //IE in some circumstances generates WM_SETTINGCHANGE message on appearance
+    //and thus triggers this method
+    //but we may not have the devices list initialized yet.
+    if (!Devices::GetInstance()){
+        return;
+    }
     Devices::InstanceAccess devices;
     int devicesNum = devices->GetNumDevices();
     for (int deviceIndex = 0; deviceIndex < devicesNum; deviceIndex++) {