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-rw-r--r--hw/xwin/winshadddnl.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/hw/xwin/winshadddnl.c b/hw/xwin/winshadddnl.c
index 01097f295..9fc3a15ea 100644
--- a/hw/xwin/winshadddnl.c
+++ b/hw/xwin/winshadddnl.c
@@ -986,6 +986,10 @@ winRedrawScreenShadowDDNL(ScreenPtr pScreen)
RECT rcSrc, rcDest;
POINT ptOrigin;
+ /* Return immediately if we didn't get needed surfaces */
+ if (!pScreenPriv->pddsPrimary4 || !pScreenPriv->pddsShadow4)
+ return;
+
/* Get the origin of the window in the screen coords */
ptOrigin.x = pScreenInfo->dwXOffset;
ptOrigin.y = pScreenInfo->dwYOffset;