RFR: 8371431: Warning message when turning off CompactStrings

[Alan Bateman]

On Mon, 27 Oct 2025 01:26:18 GMT, Shaojin Wen <swen at openjdk.org> wrote:

> A warning message should be given before removing the CompactStrings off option.

There is discussion on core-libs-dev about creating a JEP to document the story in a way that gets to the far reaches of the galaxy where -XX:-CompactStrings might be used.

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PR Comment: https://git.openjdk.org/jdk/pull/27995#issuecomment-3509778753