8276995: Bug in jdk.jfr.event.gc.collection.TestSystemGC

[sendaoYan]

Hi all,

This pull request contains a backport of commit e80b76b6 from the openjdk/jdk repository.

The commit being backported was authored by Robert Toyonaga on 27 Feb 2025 and was reviewed by Erik Gahlin and David Holmes.

Thanks!

---

Progress

• Change must not contain extraneous whitespace
• Commit message must refer to an issue
• JDK-8276995 needs maintainer approval

Issue

• JDK-8276995: Bug in jdk.jfr.event.gc.collection.TestSystemGC (Bug - P4 - Approved)

Reviewing

Using git

Checkout this PR locally:
$ git fetch https://git.openjdk.org/jdk24u.git pull/96/head:pull/96
$ git checkout pull/96

Update a local copy of the PR:
$ git checkout pull/96
$ git pull https://git.openjdk.org/jdk24u.git pull/96/head

Using Skara CLI tools

Checkout this PR locally:
$ git pr checkout 96

View PR using the GUI difftool:
$ git pr show -t 96

Using diff file

Download this PR as a diff file:
https://git.openjdk.org/jdk24u/pull/96.diff

Using Webrev

Link to Webrev Comment

[bridgekeeper]

👋 Welcome back syan! 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]

@sendaoYan 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:

8276995: Bug in jdk.jfr.event.gc.collection.TestSystemGC

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 no new commits pushed to the master branch. If another commit should be pushed before you perform the /integrate command, your PR will be automatically rebased. If you prefer to avoid any potential 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]

⚠️ @sendaoYan 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 (4498007c)

[sendaoYan]

/approval request Clean backport to fix the test bug. Test-fix only, change has been verified locally, no risk.

[openjdk]

@sendaoYan
8276995: The approval request has been created successfully.

[sendaoYan]

Thanks for the approved.

/integrate

[openjdk]

Going to push as commit 91ce41f.
Since your change was applied there have been 8 commits pushed to the master branch:

• cc039a5: 8334644: Automate javax/print/attribute/PageRangesException.java
• fe6d230: 8350260: Improve HTML instruction formatting in PassFailJFrame
• a32fa84: 8294155: Exception thrown before awaitAndCheck hangs PassFailJFrame
• 23a44d9: 8340784: Remove PassFailJFrame constructor with screenshots
• 5c19cf5: 8339889: Several compiler tests ignore vm flags and not marked as flagless
• da8abdc: 8314840: 3 gc/epsilon tests ignore external vm options
• 981d3c2: 8347629: Test FailOverDirectExecutionControlTest.java fails with -Xcomp
• 9d101b2: 8349200: [JMH] time.format.ZonedDateTimeFormatterBenchmark fails

Your commit was automatically rebased without conflicts.

[openjdk]

@sendaoYan Pushed as commit 91ce41f.

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