8205076: [17u] Inet6AddressImpl.c: lookupIfLocalHost accesses int InetAddress.preferIPv6Address as a boolean

[shipilev]

This is a 11u and 17u -specific bug, see JBS and its comments for more details. I think we can fix this by explicitly checking against the PREFER_IPV6_VALUE, like post JDK 18 code does.

It is a bit weird to backport the issue with [17u] in title, but I think it is the cleanest way to make sure we backport the same fix 17u already ships with.

Additional testing:

• macos-aarch64-server-fastdebug, DcmdMBeanTestCheckJni.java now passes
• macos-aarch64-server-fastdebug, jdk_net

---

Progress

• Change must not contain extraneous whitespace
• Commit message must refer to an issue
• JDK-8205076 needs maintainer approval

Issue

• JDK-8205076: [17u] Inet6AddressImpl.c: lookupIfLocalHost accesses int InetAddress.preferIPv6Address as a boolean (Bug - P4 - Approved)

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[bridgekeeper]

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[openjdk]

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

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

8205076: [17u] Inet6AddressImpl.c: `lookupIfLocalHost` accesses `int InetAddress.preferIPv6Address` as a boolean

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At the time when this comment was updated there had been 2 new commits pushed to the master branch:

• f08e5e8: 8316240: Open source several add/remove MenuBar manual tests
• 3901633: 8280392: java/awt/Focus/NonFocusableWindowTest/NonfocusableOwnerTest.java failed with "RuntimeException: Test failed."

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[openjdk]

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

[openjdk]

⚠️ @shipilev 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.

[shipilev]

/approval request Backport for 11u/17u-specific fix, does what upstream code already do post JDK 18, and in JDK 17. Testing passes on platform where tests used to fail.

[openjdk]

@shipilev
8205076: The approval request has been created successfully.

[mlbridge]

Webrevs

• 00: Full (cb5d52c5)

[shipilev]

/integrate

[openjdk]

Going to push as commit 667bbd3.
Since your change was applied there have been 4 commits pushed to the master branch:

• 7d4ef49: 8329510: Update ProblemList for JFileChooser/8194044/FileSystemRootTest.java
• 2e4179b: 8325179: Race in BasicDirectoryModel.validateFileCache
• f08e5e8: 8316240: Open source several add/remove MenuBar manual tests
• 3901633: 8280392: java/awt/Focus/NonFocusableWindowTest/NonfocusableOwnerTest.java failed with "RuntimeException: Test failed."

Your commit was automatically rebased without conflicts.

[openjdk]

@shipilev Pushed as commit 667bbd3.

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