8380993: [REDO] Incorrect Interpretation of POSIX TZ Environment Variable on AIX

[sruthyjay]

This is a Backport PR : openjdk/jdk#31270

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Progress

• Change must not contain extraneous whitespace
• Commit message must refer to an issue
• JDK-8380993 needs maintainer approval

Issue

• JDK-8380993: [REDO] Incorrect Interpretation of POSIX TZ Environment Variable on AIX (Bug - P4 - Approved)

Reviewing

Using git

Checkout this PR locally:
$ git fetch https://git.openjdk.org/jdk25u-dev.git pull/607/head:pull/607
$ git checkout pull/607

Update a local copy of the PR:
$ git checkout pull/607
$ git pull https://git.openjdk.org/jdk25u-dev.git pull/607/head

Using Skara CLI tools

Checkout this PR locally:
$ git pr checkout 607

View PR using the GUI difftool:
$ git pr show -t 607

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Download this PR as a diff file:
https://git.openjdk.org/jdk25u-dev/pull/607.diff

Using Webrev

Link to Webrev Comment

[bridgekeeper]

👋 Welcome back sruthyjay! A progress list of the required criteria for merging this PR into master will be added to the body of your pull request. There are additional pull request commands available for use with this pull request.

[openjdk]

@sruthyjay 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:

8380993: [REDO] Incorrect Interpretation of POSIX TZ Environment Variable on AIX

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 23 new commits pushed to the master branch:

• 85925b9: Merge
• 58853f3: 8386551: Windows build broken because of MSys2/Make update
• a0cd5c1: 8385490: Update HarfBuzz to 14.2.0
• ... and 20 more: https://git.openjdk.org/jdk25u-dev/compare/59e4f5c9cb417c10ad95839e2c1681b43aede569...master

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.

As you do not have Committer status in this project an existing Committer must agree to sponsor your change.

➡️ To flag this PR as ready for integration with the above commit message, type /integrate in a new comment. (Afterwards, your sponsor types /sponsor in a new comment to perform the integration).

[openjdk]

This backport pull request has now been updated with issue from the original commit.

[openjdk]

⚠️ @sruthyjay This change is now ready for you to apply for maintainer approval. This can be done directly in each associated issue or by using the /approval command.

[mlbridge]

Webrevs

• 00: Full (aa5309bb)

[sruthyjay]

/approval

[openjdk]

@sruthyjay usage: /approval [<id>] (request|cancel) [<text>]

[sruthyjay]

/approval JDK- 8380993 clean Backport request to restore correct AIX timezone mapping for modern POSIX TZ strings, preventing incorrect GMT fallback while maintaining backward compatibility with low-risk, AIX-only changes and regression test coverage.

[openjdk]

@sruthyjay usage: /approval [<id>] (request|cancel) [<text>]

[sruthyjay]

/approval JDK-8380993 request clean Backport to restore correct AIX timezone mapping for modern POSIX TZ strings, preventing incorrect GMT fallback while maintaining backward compatibility with low-risk, AIX-only changes and regression test coverage.

[openjdk]

@sruthyjay
JDK-8380993: The approval request has been created successfully.

[GoeLin]

Hi @sruthyjay
please backport to 27 first, or 27u.

[jerboaa]

@sruthyjay Please enable GHA for your fork, thanks. See https://github.com/openjdk/jdk25u-dev/pull/607/checks?check_run_id=80972440379

[sruthyjay]

/integrate

[openjdk]

@sruthyjay
Your change (at version aa5309b) is now ready to be sponsored by a Committer.

[jerboaa]

@sruthyjay Do you have a GHA run of this before I sponsor?

[sruthyjay]

@jerboaa I have triggered one now : https://github.com/sruthyjay/jdk25u-dev/actions/runs/28098615487

Thank you !

[jerboaa]

@jerboaa I have triggered one now : https://github.com/sruthyjay/jdk25u-dev/actions/runs/28098615487

This one doesn't seem to be a run from your branch.

[sruthyjay]

@jerboaa I have triggered one now : https://github.com/sruthyjay/jdk25u-dev/actions/runs/28098615487

This one doesn't seem to be a run from your branch.

Oops ! sorry .. https://github.com/sruthyjay/jdk25u-dev/actions/runs/28099385168 have triggered it for my branch .. I will cancel the master branch run.

[jerboaa]

@jerboaa I have triggered one now : https://github.com/sruthyjay/jdk25u-dev/actions/runs/28098615487

This one doesn't seem to be a run from your branch.

Oops ! sorry .. https://github.com/sruthyjay/jdk25u-dev/actions/runs/28099385168 have triggered it for my branch .. I will cancel the master branch run.

Thanks. This one shows up on this PR now. The windows build failure is known and should go away with a merged master run. I've triggered one here: https://github.com/jerboaa/jdk25u-dev/actions/runs/28099213050

[jerboaa]

GHA is clean.

/sponsor

[openjdk]

Going to push as commit 567ecce.
Since your change was applied there have been 23 commits pushed to the master branch:

• 85925b9: Merge
• 58853f3: 8386551: Windows build broken because of MSys2/Make update
• a0cd5c1: 8385490: Update HarfBuzz to 14.2.0
• ... and 20 more: https://git.openjdk.org/jdk25u-dev/compare/59e4f5c9cb417c10ad95839e2c1681b43aede569...master

Your commit was automatically rebased without conflicts.

[openjdk]

@jerboaa @sruthyjay Pushed as commit 567ecce.

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