File compiz-gcc6.patch of Package compiz

--- a/plugins/trailfocus/src/trailfocus.cpp
+++ b/plugins/trailfocus/src/trailfocus.cpp
@@ -195,7 +195,7 @@ TrailfocusScreen::popWindow (TrailfocusW
 	}
 	else
 	{
-	    distance = abs (cur->activeNum () - best->activeNum ());
+	    distance = abs ((int) cur->activeNum () - (int) best->activeNum ());
 	    if (distance < bestDist)
 	    {
 		best     = cur;