NoSuchElementException in PropertyMapIterator

Hannes Wallnöfer hannes.wallnoefer at oracle.com
Mon Dec 5 13:22:27 UTC 2016


Hi Ahmed,

yes, this is a bug, thanks for reporting it. 

Out of curiosity, , since it is not an exported API class: How are you using PropertyMap?

Hannes


> Am 03.12.2016 um 10:00 schrieb Ahmed Ashour <asashour at yahoo.com>:
> 
> Hi all,
> I believe there is a bug in next() of PropertyMap.PropertyMapIterator, where 'iter' may not have more elements.
> The line should be changed from "property = iter.next();" to "property = iter.hasNext() ? iter.next() : null;".
> This checking is done in the constructor and in skipNotEnumerable(), but not in next().
> Below is a complete test case, that fails in jdk8 and jdk9 code bases.
> Thanks a lot,Ahmed Ashour
> public class PropertyMapTest {
>     @Test    public  void iterator() {        ScriptObject scriptObject = new ObjectConstructor();        for (Object o : scriptObject.getMap()) {        }    }
>     public static final class ObjectConstructor extends ScriptObject {        private ScriptFunction addEventListener;
>         public ScriptFunction G$addEventListener() {            return addEventListener;        }
>         public void S$addEventListener(final ScriptFunction function) {            this.addEventListener = function;        }
>         {            final List<Property> list = new ArrayList<>(1);            list.add(AccessorProperty.create("addEventListener", Property.WRITABLE_ENUMERABLE_CONFIGURABLE,                     virtualHandle("G$addEventListener", ScriptFunction.class),                    virtualHandle("S$addEventListener", void.class, ScriptFunction.class)));            setMap(PropertyMap.newMap(list));        }
>         private static MethodHandle virtualHandle(final String name, final Class<?> rtype, final Class<?>... ptypes) {            try {                return MethodHandles.lookup().findVirtual(ObjectConstructor.class, name,                        MethodType.methodType(rtype, ptypes));            }            catch (final ReflectiveOperationException e) {                throw new IllegalStateException(e);            }        }    }}



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