RFR: 8332084: Ensure JdkConsoleImpl.restoreEcho visibility in a shutdown hook [v3]

[Naoto Sato]

On Mon, 13 May 2024 17:06:32 GMT, Naoto Sato <naoto at openjdk.org> wrote:

>> Making sure `restoreEcho` correctly reflects the state in the shutdown thread, which differs from the application's thread that issues the `readPassword()` method.
>
> Naoto Sato has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Replaced another unused exception with _

Thanks, Pavel.

> While it's hard to test this change (hence the `noreg-hard` label), the `restoreEcho` functionality does not seem to be tested at all. Should we add a straightforward test for it, perhaps separately?

Filed: https://bugs.openjdk.org/browse/JDK-8332161

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PR Comment: https://git.openjdk.org/jdk/pull/19184#issuecomment-2108282547