8257999: Parallel GC crash in gc/parallel/TestDynShrinkHeap.java: new region is not in covered_region

[omikhaltsova]

I'd like to backport JDK-8257999 to jdk15u for parity with jdk11u.
The original patch applied manually due to the slight context changes.
All regular tests passed.

---

Progress

• Change must not contain extraneous whitespace
• Commit message must refer to an issue

Issue

• JDK-8257999: Parallel GC crash in gc/parallel/TestDynShrinkHeap.java: new region is not in covered_region

Reviewing

Using git

Checkout this PR locally:
$ git fetch https://git.openjdk.java.net/jdk15u-dev pull/99/head:pull/99
$ git checkout pull/99

Update a local copy of the PR:
$ git checkout pull/99
$ git pull https://git.openjdk.java.net/jdk15u-dev pull/99/head

Using Skara CLI tools

Checkout this PR locally:
$ git pr checkout 99

View PR using the GUI difftool:
$ git pr show -t 99

Using diff file

Download this PR as a diff file:
https://git.openjdk.java.net/jdk15u-dev/pull/99.diff

[bridgekeeper]

👋 Welcome back omikhaltcova! 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]

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

[openjdk]

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

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

8257999: Parallel GC crash in gc/parallel/TestDynShrinkHeap.java: new region is not in covered_region

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 1 new commit pushed to the master branch:

• a01ebe3: 8266248: Compilation failure in PLATFORM_API_MacOSX_MidiUtils.c with Xcode 12.5

Please see this link for an up-to-date comparison between the source branch of this pull request and the master branch.
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[mlbridge]

Webrevs

• 00: Full (093be788)

[omikhaltsova]

/integrate

[openjdk]

@omikhaltsova
Your change (at version 093be78) is now ready to be sponsored by a Committer.

[yan-too]

/sponsor

[openjdk]

Going to push as commit 7d57365.
Since your change was applied there has been 1 commit pushed to the master branch:

• a01ebe3: 8266248: Compilation failure in PLATFORM_API_MacOSX_MidiUtils.c with Xcode 12.5

Your commit was automatically rebased without conflicts.

[openjdk]

@yan-too @omikhaltsova Pushed as commit 7d57365.

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