RFR: 8333356: JVM crashes with "aux_index does not match even or odd indices"

[Aleksey Shipilev]

On Wed, 7 Aug 2024 23:55:47 GMT, Coleen Phillimore <coleenp at openjdk.org> wrote:

> You get this message if the nodes of the concurrent hash table are corrupted or somehow don't yield the same hashcode as when the node was entered in the table.  This change makes the error message less obscure, and in debug mode compares the two hash codes.  The hash code is kept in the table in only debug mode, because we don't want the table to take a lot more memory.
> Tested with tier1-4.

The change looks good, and I agree with David that we are better off doing this under a separate bug ID. No need for new PR, just rename this one :)

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PR Review: https://git.openjdk.org/jdk/pull/20503#pullrequestreview-2227210554