RFR: 8286179: Node::find(int) should not traverse from new to old nodes [v3]

[Emanuel Peter]

On Mon, 9 May 2022 14:17:11 GMT, Vladimir Kozlov <kvn at openjdk.org> wrote:

>> Emanuel Peter has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   converted nullptr asserts in nullptr returns
>
> Sorry I was not clear. I asked for nullptr check you have in final version and not assert. It is wrong to have an assert in interactive function used in debugger.

Thanks @vnkozlov @chhagedorn for the reviews and comments.
Thanks @TobiHartmann for the conversations leading to this solution.

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PR: https://git.openjdk.java.net/jdk/pull/8567