8269850: Most JDK releases report macOS version 12 as 10.16 instead of 12.0

[RogerRiggs]

The Mac OS specific code to determine the os.version property in java_props_macosx.c is updated
to replace the code extracting the version from the SystemVersion.plist by reading the version using t
he hidden link:
/System/Library/CoreServices/.SystemVersionPlatform.plist

Its contents are not dependent on the SYSTEM_VERSION_COMPAT environment variable.
With this change, 11.5 reports the 11.5.1 minor version and os.version 11.6 is correctly reported.
The change can be backported to other versions as needed.

(Opening a new PR, the PR branch #5619 was deleted by unintentionally).

---

Progress

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

Issue

• JDK-8269850: Most JDK releases report macOS version 12 as 10.16 instead of 12.0

Reviewers

• Naoto Sato (@naotoj - Reviewer)
• Christoph Langer (@RealCLanger - Reviewer)

Reviewing

Using git

Checkout this PR locally:
$ git fetch https://git.openjdk.java.net/jdk pull/5633/head:pull/5633
$ git checkout pull/5633

Update a local copy of the PR:
$ git checkout pull/5633
$ git pull https://git.openjdk.java.net/jdk pull/5633/head

Using Skara CLI tools

Checkout this PR locally:
$ git pr checkout 5633

View PR using the GUI difftool:
$ git pr show -t 5633

Using diff file

Download this PR as a diff file:
https://git.openjdk.java.net/jdk/pull/5633.diff

[bridgekeeper]

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[openjdk]

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[mlbridge]

Webrevs

• 01: Full - Incremental (f44119d9)
• 00: Full (d1e2bd20)

[openjdk]

@RogerRiggs 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:

8269850: Most JDK releases report macOS version 12 as 10.16 instead of 12.0

Reviewed-by: naoto, clanger

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 60 new commits pushed to the master branch:

• 653a612: 8270156: Add "randomness" and "stress" keys to JTreg tests which use StressGCM, StressLCM and/or StressIGVN
• 66ce09f: 8272703: StressSeed should be set via FLAG_SET_ERGO
• c434528: 8273546: DecimalFormat documentation contains literal HTML character references
• d098751: 8273916: Remove 'special' ranking
• 4f3b626: 8271567: AArch64: AES Galois CounterMode (GCM) interleaved implementation using vector instructions
• 8799856: 8274075: Fix miscellaneous typos in java.base
• 8b833bb: 8274048: IGV: Replace usages of Collections.sort with List.sort call
• a74c099: 8252842: Extend jmap to support parallel heap dump
• 2166ed1: 8273894: ConcurrentModificationException raised every time ReferralsCache drops referral
• 1c6fa11: 8273979: move some os time related functions to os_posix for POSIX platforms
• ... and 50 more: https://git.openjdk.java.net/jdk/compare/b3b4b1cc218d4c02809eb7fd4d83d541acfbd9bd...master

As there are no conflicts, your changes will automatically be rebased on top of these commits when integrating. If you prefer to avoid this 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.

[RealCLanger]

Looks good to me. I tested with an Xcode 11.7 build on a MacOS 11.6 and there OsVersionTest fails without the fix and passes with it.

[RogerRiggs]

Thanks for testing with Xcode 11.7. and MacOS 11.6.

[RogerRiggs]

/integrate

[openjdk]

Going to push as commit 3b1b8fc.
Since your change was applied there have been 61 commits pushed to the master branch:

• 1b7f4b7: 8274169: HotSpot Style Guide has stale link to chromium style guide
• 653a612: 8270156: Add "randomness" and "stress" keys to JTreg tests which use StressGCM, StressLCM and/or StressIGVN
• 66ce09f: 8272703: StressSeed should be set via FLAG_SET_ERGO
• c434528: 8273546: DecimalFormat documentation contains literal HTML character references
• d098751: 8273916: Remove 'special' ranking
• 4f3b626: 8271567: AArch64: AES Galois CounterMode (GCM) interleaved implementation using vector instructions
• 8799856: 8274075: Fix miscellaneous typos in java.base
• 8b833bb: 8274048: IGV: Replace usages of Collections.sort with List.sort call
• a74c099: 8252842: Extend jmap to support parallel heap dump
• 2166ed1: 8273894: ConcurrentModificationException raised every time ReferralsCache drops referral
• ... and 51 more: https://git.openjdk.java.net/jdk/compare/b3b4b1cc218d4c02809eb7fd4d83d541acfbd9bd...master

Your commit was automatically rebased without conflicts.

[openjdk]

@RogerRiggs Pushed as commit 3b1b8fc.

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