[GH-ISSUE #1638] DoubleEndedIterator is implemented incorrectly for LabelIter #718

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opened 2026-03-15 23:57:24 +03:00 by kerem · 0 comments

kerem commented

2026-03-15 23:57:24 +03:00

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Originally created by @bluejekyll on GitHub (Feb 17, 2022).
Original GitHub issue: https://github.com/hickory-dns/hickory-dns/issues/1638

Describe the bug
when reversing a label iterator, it does not "rev" from the end properly, as this is currently calculated as the current index.

To Reproduce
take an iter on any name, like www.example.com, and then get an label_iter, call next, this returns www then call rev and next and example is returned instead of com.

Expected behavior
com should be returned after the first next is called on the iterator example above.

Originally created by @bluejekyll on GitHub (Feb 17, 2022). Original GitHub issue: https://github.com/hickory-dns/hickory-dns/issues/1638 **Describe the bug** when reversing a label iterator, it does not "rev" from the end properly, as this is currently calculated as the current index. **To Reproduce** take an iter on any name, like `www.example.com`, and then get an label_iter, call next, this returns `www` then call `rev` and `next` and `example` is returned instead of `com`. **Expected behavior** `com` should be returned after the first next is called on the iterator example above.