8282467: add extra diagnostics for JDK-8268184

[dean-long]

Add more info to the assert to help diagnose what went wrong the next time it fails.

---

Progress

• Change must not contain extraneous whitespace
• Commit message must refer to an issue
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Issue

• JDK-8282467: add extra diagnostics for JDK-8268184

Reviewers

• Thomas Stuefe (@tstuefe - Reviewer)

Reviewing

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Checkout this PR locally:
$ git fetch https://git.openjdk.java.net/jdk pull/7642/head:pull/7642
$ git checkout pull/7642

Update a local copy of the PR:
$ git checkout pull/7642
$ git pull https://git.openjdk.java.net/jdk pull/7642/head

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Checkout this PR locally:
$ git pr checkout 7642

View PR using the GUI difftool:
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https://git.openjdk.java.net/jdk/pull/7642.diff

[bridgekeeper]

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[openjdk]

@dean-long The following label will be automatically applied to this pull request:

• hotspot-compiler

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[mlbridge]

Webrevs

• 00: Full (48b822ac)

[tstuefe]

Looks good (and trivial).

Cheers, Thomas

[openjdk]

@dean-long This change now passes all automated pre-integration checks.

ℹ️ This project also has non-automated pre-integration requirements. Please see the file CONTRIBUTING.md for details.

After integration, the commit message for the final commit will be:

8282467: add extra diagnostics for JDK-8268184

Reviewed-by: stuefe

You can use pull request commands such as /summary, /contributor and /issue to adjust it as needed.

At the time when this comment was updated there had been 3 new commits pushed to the master branch:

• e4d9fc8: 8282023: PropertiesStoreTest and StoreReproducibilityTest jtreg failures due to en_CA locale
• c1a28aa: 8282392: [zero] Build broken on AArch64
• 7743266: 8281210: Add manpage changes for PAC-RET protection on Linux/AArch64

Please see this link for an up-to-date comparison between the source branch of this pull request and the master branch.
As there are no conflicts, your changes will automatically be rebased on top of these commits when integrating. If you prefer to avoid this automatic rebasing, please check the documentation for the /integrate command for further details.

➡️ To integrate this PR with the above commit message to the master branch, type /integrate in a new comment.

[dean-long]

Thanks Thomas!

[dean-long]

/integrate

[openjdk]

Going to push as commit d3022f8.
Since your change was applied there have been 3 commits pushed to the master branch:

• e4d9fc8: 8282023: PropertiesStoreTest and StoreReproducibilityTest jtreg failures due to en_CA locale
• c1a28aa: 8282392: [zero] Build broken on AArch64
• 7743266: 8281210: Add manpage changes for PAC-RET protection on Linux/AArch64

Your commit was automatically rebased without conflicts.

[openjdk]

@dean-long Pushed as commit d3022f8.

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