8343618: Stack smashing in awt_InputMethod.c on Linux s390x

[zzambers]

Backport fixing stack smashing issue in awt_InputMethod.c on s390x. Clean backport.

---

Progress

• Change must not contain extraneous whitespace
• Commit message must refer to an issue
• JDK-8343618 needs maintainer approval

Issue

• JDK-8343618: Stack smashing in awt_InputMethod.c on Linux s390x (Bug - P4 - Approved)

Reviewing

Using git

Checkout this PR locally:
$ git fetch https://git.openjdk.org/jdk11u-dev.git pull/3037/head:pull/3037
$ git checkout pull/3037

Update a local copy of the PR:
$ git checkout pull/3037
$ git pull https://git.openjdk.org/jdk11u-dev.git pull/3037/head

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Checkout this PR locally:
$ git pr checkout 3037

View PR using the GUI difftool:
$ git pr show -t 3037

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Download this PR as a diff file:
https://git.openjdk.org/jdk11u-dev/pull/3037.diff

Using Webrev

Link to Webrev Comment

[bridgekeeper]

👋 Welcome back zzambers! 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]

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

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

8343618: Stack smashing in awt_InputMethod.c on Linux s390x

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 28 new commits pushed to the master branch:

• 5aa91df: 8274453: (sctp) com/sun/nio/sctp/SctpChannel/CloseDescriptors.java test should be resilient to lsof warnings
• 0e8228d: 8318605: Enable parallelism in vmTestbase/nsk/stress/stack tests
• b604657: 8315774: Enable parallelism in vmTestbase/gc/g1/unloading tests
• ... and 25 more: https://git.openjdk.org/jdk11u-dev/compare/c5407b6a8464fcc1eed31a2e9e30651e9011dbd3...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]

⚠️ @zzambers 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.

[zzambers]

/approval request Fix for stack smashing issue in awt_InputMethod.c on s390x. Small change, only affects big endian. Low risk. Clean backport.

[openjdk]

@zzambers
8343618: The approval request has been created successfully.

[mlbridge]

Webrevs

• 00: Full (8668c217)

[bridgekeeper]

@zzambers This pull request has been inactive for more than 4 weeks and will be automatically closed if another 4 weeks passes without any activity. To avoid this, simply issue a /touch or /keepalive command to the pull request. Feel free to ask for assistance if you need help with progressing this pull request towards integration!

[vieiro]

Let's keep this open. I think it would be good to have this in 11.

[jerboaa]

This needs to land in JDK 17 first.

[zzambers]

/integrate

[openjdk]

@zzambers
Your change (at version 8668c21) is now ready to be sponsored by a Committer.

[jerboaa]

/sponsor

[openjdk]

Going to push as commit 5b0c280.
Since your change was applied there have been 28 commits pushed to the master branch:

• 5aa91df: 8274453: (sctp) com/sun/nio/sctp/SctpChannel/CloseDescriptors.java test should be resilient to lsof warnings
• 0e8228d: 8318605: Enable parallelism in vmTestbase/nsk/stress/stack tests
• b604657: 8315774: Enable parallelism in vmTestbase/gc/g1/unloading tests
• ... and 25 more: https://git.openjdk.org/jdk11u-dev/compare/c5407b6a8464fcc1eed31a2e9e30651e9011dbd3...master

Your commit was automatically rebased without conflicts.

[openjdk]

@jerboaa @zzambers Pushed as commit 5b0c280.

💡 You may see a message that your pull request was closed with unmerged commits. This can be safely ignored.