RFR: 8324573: HashMap::putAll should resize to sum of both map sizes

[jmehrens]

On Wed, 24 Jan 2024 21:53:51 GMT, Hannes Greule <hgreule at openjdk.org> wrote:

>...then suggest we should change the Map::size() api to return a long...

For any Map/Collection you can fetch the Spliterator and use estimateSize or getExactSizeIfKnown as both return size as a long.

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PR Comment: https://git.openjdk.org/jdk/pull/17544#issuecomment-1909116636