8387015: C2: crash with "named projection 2 not found" from ArrayCopyNode::finish_transform() for clone

[rwestrel]

This issue was hit by one of our customers with 25. The fix is simple and low risk. tier1 testing passes. The test case of the bug fails without the fix (albeit not with the StressSeed hardcoded in the test case) and passes with it.

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Progress

• Change must not contain extraneous whitespace
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• JDK-8387015 needs maintainer approval

Issue

• JDK-8387015: C2: crash with "named projection 2 not found" from ArrayCopyNode::finish_transform() for clone (Bug - P3 - Approved)

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$ git fetch https://git.openjdk.org/jdk25u-dev.git pull/652/head:pull/652
$ git checkout pull/652

Update a local copy of the PR:
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$ git pull https://git.openjdk.org/jdk25u-dev.git pull/652/head

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[bridgekeeper]

👋 Welcome back roland! 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]

@rwestrel 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:

8387015: C2: crash with "named projection 2 not found" from ArrayCopyNode::finish_transform() for clone

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 14 new commits pushed to the master branch:

• 009a192: 8385817: Headless jdk still contains bin/jconsole
• 6bbae6d: 8372757: MacOS, Accessibility: Crash in [MenuAccessibility accessibilityChildren] after JDK-8341311
• e5ff6ce: 8349535: Refactor ./pkcs11/Provider/MultipleLogins.sh to java test
• ... and 11 more: https://git.openjdk.org/jdk25u-dev/compare/7ec1d5f040333c93f7286b3e662236a05241a7ff...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.

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

[openjdk]

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

[openjdk]

⚠️ @rwestrel 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 (fff71b94)

[rwestrel]

/integrate

[openjdk]

Going to push as commit 2b36443.
Since your change was applied there have been 15 commits pushed to the master branch:

• 9f38d9a: 8385166: PPC: C2: c_return_value and return_value should not set 2nd OptoRegPair for Op_RegI
• 009a192: 8385817: Headless jdk still contains bin/jconsole
• 6bbae6d: 8372757: MacOS, Accessibility: Crash in [MenuAccessibility accessibilityChildren] after JDK-8341311
• ... and 12 more: https://git.openjdk.org/jdk25u-dev/compare/7ec1d5f040333c93f7286b3e662236a05241a7ff...master

Your commit was automatically rebased without conflicts.

[openjdk]

@rwestrel Pushed as commit 2b36443.

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