On Mon, Jul 20, 2026 at 12:01 PM Mark Thomas <[email protected]> wrote:
>
> On 15/07/2026 16:06, [email protected] wrote:
> > This is an automated email from the ASF dual-hosted git repository.
> >
> > rmaucher pushed a commit to branch main
> > in repository https://gitbox.apache.org/repos/asf/tomcat.git
> >
> >
> > The following commit(s) were added to refs/heads/main by this push:
> >       new 60008aaaf7 Code review fixes
> > 60008aaaf7 is described below
> >
> > commit 60008aaaf73a5e864f382f4667d576ea2d5b2f2a
> > Author: remm <[email protected]>
> > AuthorDate: Wed Jul 15 17:06:29 2026 +0200
> >
> >      Code review fixes
>
> <snip/>
>
> > diff --git a/java/org/apache/catalina/util/ResourceSet.java 
> > b/java/org/apache/catalina/util/ResourceSet.java
> > index f7a82f7451..8fcc5cdc81 100644
> > --- a/java/org/apache/catalina/util/ResourceSet.java
> > +++ b/java/org/apache/catalina/util/ResourceSet.java
>
> <snip/>
>
> > @@ -221,6 +222,23 @@ public final class ResourceSet<T> extends HashSet<T> {
> >       }
> >
> >
> > +    @Override
> > +    public java.util.Spliterator<T> spliterator() {
> > +        if (locked) {
> > +            java.util.Spliterator<T> base = super.spliterator();
> > +            return new java.util.Spliterator<T>() {
> > +                @Override public boolean 
> > tryAdvance(java.util.function.Consumer<? super T> action) { return 
> > base.tryAdvance(action); }
> > +                @Override public java.util.Spliterator<T> trySplit() { 
> > return null; }
> > +                @Override public long estimateSize() { return 
> > base.estimateSize(); }
> > +                @Override public int characteristics() { return 
> > base.characteristics() & ~java.util.Spliterator.SORTED; }
> > +                @Override public void 
> > forEachRemaining(java.util.function.Consumer<? super T> action) { 
> > base.forEachRemaining(action); }
> > +                @Override public Comparator<? super T> getComparator() { 
> > return base.getComparator(); }
> > +            };
> > +        }
> > +        return super.spliterator();
> > +    }
>
> What was the intention here? The above code is a NO-OP. ResourceSet
> extends HashSet which never returns the SORTED characteristic. Also, it
> is not clear why this is conditional on the status of locked.
>
> I did wonder if the intention was to add IMMTABLE when the Set was
> locked but the logic for that is sufficiently different that I am really
> not sure.

Code review had a defect like this:
"ResourceSet overrides iterator() to return a LockedIterator when
locked (line 230-235), which throws on remove(). However,
spliterator() is not overridden. When the set is locked, calling
spliterator() returns the inherited HashSet.spliterator(), whose
iterator allows remove() operations, bypassing the lock."

I don't have experience using spliterator. iterator() returns a
LockedIterator when locked, and a regular iterator otherwise.

Rémy

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