8288754: GCC 12 fails to build zReferenceProcessor.cpp

[shipilev]

Clean backport to improve GCC 12 support.

---

Progress

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

Issue

• JDK-8288754: GCC 12 fails to build zReferenceProcessor.cpp

Reviewing

Using git

Checkout this PR locally:
$ git fetch https://git.openjdk.org/jdk17u-dev pull/499/head:pull/499
$ git checkout pull/499

Update a local copy of the PR:
$ git checkout pull/499
$ git pull https://git.openjdk.org/jdk17u-dev pull/499/head

Using Skara CLI tools

Checkout this PR locally:
$ git pr checkout 499

View PR using the GUI difftool:
$ git pr show -t 499

Using diff file

Download this PR as a diff file:
https://git.openjdk.org/jdk17u-dev/pull/499.diff

[bridgekeeper]

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[openjdk]

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

[openjdk]

@shipilev 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:

8288754: GCC 12 fails to build zReferenceProcessor.cpp

You can use pull request commands such as /summary, /contributor and /issue to adjust it as needed.

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[mlbridge]

Webrevs

• 01: Full - Incremental (06d31f98)
• 00: Full (6482ac5f)

[GoeLin]

Pre-submit failure tools/javac/Paths/MineField.sh seen also in another change, unrelated.

[shipilev]

Testing is now clean too, known issue was already fixed.

/integrate

[openjdk]

Going to push as commit 68456bb.
Since your change was applied there has been 1 commit pushed to the master branch:

• 72603ff: 8288303: C1: Miscompilation due to broken Class.getModifiers intrinsic

Your commit was automatically rebased without conflicts.

[openjdk]

@shipilev Pushed as commit 68456bb.

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