src/jdk.scripting.nashorn/share/classes/jdk/nashorn/internal/objects/NativeUint32Array.java

*** 111,128 ****
              }
          }
  
          private void setElem(final int index, final int elem) {
              try {
                  nb.put(index, elem);
              } catch (final IndexOutOfBoundsException e) {
-                 //swallow valid array indexes. it's ok.
-                 if (index < 0) {
                      throw new ClassCastException();
                  }
              }
-         }
  
          @Override
          public boolean isUnsigned() {
              return true;
          }
--- 111,127 ----
              }
          }
  
          private void setElem(final int index, final int elem) {
              try {
+                 if (index < nb.limit()) {
                      nb.put(index, elem);
+                 }
              } catch (final IndexOutOfBoundsException e) {
                  throw new ClassCastException();
              }
          }
  
          @Override
          public boolean isUnsigned() {
              return true;
          }