rootvector2 opened a new pull request, #720: URL: https://github.com/apache/commons-collections/pull/720
noticed while diffing the overridden method list against `java.util.Collections.synchronizedCollection`: `SynchronizedCollection` guards `removeIf` but never overrides `forEach`, so the inherited default walks the deliberately unsynchronized `iterator()` and a concurrent writer trips `ConcurrentModificationException`; delegating `forEach` under `lock` covers `SynchronizedBag`, `SynchronizedSortedBag`, `SynchronizedMultiSet`, `SynchronizedSortedMultiSet` and `SynchronizedQueue` too since they all extend it, while `stream()` and `spliterator()` stay unsynchronized for the same reason the JDK leaves them so: their traversal happens after the lock would be released. - [x] Read the [contribution guidelines](CONTRIBUTING.md) for this project. - [ ] Read the [ASF Generative Tooling Guidance](https://www.apache.org/legal/generative-tooling.html) if you use Artificial Intelligence (AI). - [ ] I used AI to create any part of, or all of, this pull request. Which AI tool was used to create this pull request, and to what extent did it contribute? - [x] Run a successful build using the default [Maven](https://maven.apache.org/) goal with `mvn`; that's `mvn` on the command line by itself. - [x] Write unit tests that match behavioral changes, where the tests fail if the changes to the runtime are not applied. This may not always be possible, but it is a best practice. - [x] Write a pull request description that is detailed enough to understand what the pull request does, how, and why. - [x] Each commit in the pull request should have a meaningful subject line and body. -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
