src/share/classes/java/util/IdentityHashMap.java

rev 7682 : 8021591: Additional explicit null checks
Reviewed-by: duke

*** 995,1004 ****
--- 995,1005 ----
           * Must revert from AbstractSet's impl to AbstractCollection's, as
           * the former contains an optimization that results in incorrect
           * behavior when c is a smaller "normal" (non-identity-based) Set.
           */
          public boolean removeAll(Collection<?> c) {
+             Objects.requireNonNull(c);
              boolean modified = false;
              for (Iterator<K> i = iterator(); i.hasNext(); ) {
                  if (c.contains(i.next())) {
                      i.remove();
                      modified = true;
*** 1210,1219 ****
--- 1211,1221 ----
           * Must revert from AbstractSet's impl to AbstractCollection's, as
           * the former contains an optimization that results in incorrect
           * behavior when c is a smaller "normal" (non-identity-based) Set.
           */
          public boolean removeAll(Collection<?> c) {
+             Objects.requireNonNull(c);
              boolean modified = false;
              for (Iterator<Map.Entry<K,V>> i = iterator(); i.hasNext(); ) {
                  if (c.contains(i.next())) {
                      i.remove();
                      modified = true;