8337102: JITTester: Fix breaks in static initialization blocks

[kirill-shirokov]

The backport verified on MacOS/Linux/Windows by manually running JITTester.

Verification involved modifying JITTester code to terminate with non-zero exit code when encountering specific compilation error (a break statement in a static initializer) in the generated code and enabling static initializer generation in configuration file in non-fixed version.

Without the fix typically the error reproduces during the first generation round.
With the fix, there is no error for 10s of rounds.

---

Progress

• JDK-8337102 needs maintainer approval
• Change must not contain extraneous whitespace
• Commit message must refer to an issue

Error

 ⚠️ OCA signatory status must be verified

Issue

• JDK-8337102: JITTester: Fix breaks in static initialization blocks (Bug - P4)

Reviewing

Using git

Checkout this PR locally:
$ git fetch https://git.openjdk.org/jdk17u-dev.git pull/3941/head:pull/3941
$ git checkout pull/3941

Update a local copy of the PR:
$ git checkout pull/3941
$ git pull https://git.openjdk.org/jdk17u-dev.git pull/3941/head

Using Skara CLI tools

Checkout this PR locally:
$ git pr checkout 3941

View PR using the GUI difftool:
$ git pr show -t 3941

Using diff file

Download this PR as a diff file:
https://git.openjdk.org/jdk17u-dev/pull/3941.diff

[bridgekeeper]

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[kirill-shirokov]

/covered

[openjdk]

❗ This change is not yet ready to be integrated.
See the Progress checklist in the description for automated requirements.

[bridgekeeper]

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[openjdk]

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