src/share/classes/sun/font/CompositeStrike.java

*** 70,79 ****
--- 70,83 ----
          return getStrikeForSlot(glyphCode >>> 24);
      }
  
      PhysicalStrike getStrikeForSlot(int slot) {
  
+         if (slot >= strikes.length) {
+             slot = 0;
+         }
+ 
          PhysicalStrike strike = strikes[slot];
          if (strike == null) {
              strike =
                  (PhysicalStrike)(compFont.getSlotFont(slot).getStrike(desc));