8375657: RISC-V: Need to check size in SharedRuntime::is_wide_vector

[DingliZhang]

Hi all,

This pull request contains a backport of commit ca3e6236 from the openjdk/jdk repository.

The commit being backported was authored by Dingli Zhang on 20 Jan 2026 and was reviewed by Feilong Jiang and Fei Yang.

Thanks!

---

Progress

• Change must not contain extraneous whitespace
• Commit message must refer to an issue
• JDK-8375657 needs maintainer approval

Issue

• JDK-8375657: RISC-V: Need to check size in SharedRuntime::is_wide_vector (Bug - P4 - Approved)

Reviewing

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$ git fetch https://git.openjdk.org/jdk25u-dev.git pull/163/head:pull/163
$ git checkout pull/163

Update a local copy of the PR:
$ git checkout pull/163
$ git pull https://git.openjdk.org/jdk25u-dev.git pull/163/head

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Checkout this PR locally:
$ git pr checkout 163

View PR using the GUI difftool:
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https://git.openjdk.org/jdk25u-dev/pull/163.diff

Using Webrev

Link to Webrev Comment

[bridgekeeper]

👋 Welcome back dzhang! 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]

@DingliZhang 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:

8375657: RISC-V: Need to check size in SharedRuntime::is_wide_vector

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 4 new commits pushed to the master branch:

• e4afcda: 8374875: Improve perfMemory warning about 'Insufficient space for shared memory file'
• 148820c: 8374711: Hotspot runtime/CommandLine/OptionsValidation/TestOptionsWithRanges fails without printing the option name
• 0153d7e: 8370942: test/jdk/java/security/Provider/NewInstance.java and /test/jdk/java/security/cert/CertStore/NoLDAP.java may skip without notifying
• ... and 1 more: https://git.openjdk.org/jdk25u-dev/compare/b0efb28c6301a0749d75c042194c3218cf6c53fe...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]

⚠️ @DingliZhang 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.

[DingliZhang]

/approval request Same issue exists in jdk25u-dev repo as well.
Backport to check size in SharedRuntime::is_wide_vector on RISC-V.
This is a RISC-V specific change, should be low risk.

[mlbridge]

Webrevs

• 00: Full (91a84274)

[openjdk]

@DingliZhang
8375657: The approval request has been created successfully.