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[backport] Fix rareNullPointerException in some tree-based collections#10640
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`upd` may return a red tree with a red child. Need to use `maybeBlacken`when such a tree is not expected.
NullPointerException in some tree-based collections (by fixingRedBlackTree.doFrom)NullPointerException in some tree-based collections (by fixingRedBlackTree.doFrom)NullPointerException in some tree-based collectionshamzaremmal pushed a commit to hamzaremmal/scala3 that referenced this pull requestMay 2, 2025
[backport] Fix RedBlackTree.doFrom / doTo / doUntil
hamzaremmal pushed a commit to scala/scala3 that referenced this pull requestMay 7, 2025
[backport] Fix RedBlackTree.doFrom / doTo / doUntil
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library:collectionsPRs involving changes to the standard collection library release-notesworth highlighting in next release notes
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...by fixing
RedBlackTree.doFromupdmay return a red tree with a red child. Need to usemaybeBlackenwhen such a tree is not expected.Backport of#10632.