--- old/src/java.base/share/classes/java/lang/System.java	2018-10-31 14:22:40.355954530 +0100
+++ new/src/java.base/share/classes/java/lang/System.java	2018-10-31 14:22:40.235954625 +0100
@@ -533,6 +533,36 @@
                                         int length);
 
     /**
+     * Set bit atomically
+     * @param bits   bits
+     * @param index  index
+     */
+    @HotSpotIntrinsicCandidate
+    public static void setBit(byte[] bits, int index) {
+        throw new UnsupportedOperationException();
+    }
+
+    /**
+     * Clear bit atomically
+     * @param bits   bits
+     * @param index  index
+     */
+    @HotSpotIntrinsicCandidate
+    public static void clrBit(byte[] bits, int index) {
+        throw new UnsupportedOperationException();
+    }
+
+    /**
+     * Get bit
+     * @param bits   bits
+     * @param index  index
+     * @return       value
+     */
+    public static boolean isBit(byte[] bits, int index) {
+        return ((bits[index>>3] >> (index & 7)) & 1) == 1;
+    }
+
+    /**
      * Returns the same hash code for the given object as
      * would be returned by the default method hashCode(),
      * whether or not the given object's class overrides