8243666: ModuleHashes attribute generated for JMOD and JAR files depends on timestamps

[RealCLanger]

Clean backport, only resolved one copyright header diff.

I'm backporting this because it resolves an issue with jlink when using it with a debian package that was built with debuild. We got a report here in SapMachine: SAP/SapMachine#1009

debuild seems to modify the jmod files in a way that the hash computation as of JDK11 will yield different results (e.g. timestamps of files differ). The modified hash calculation solves this.

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Progress

• Change must not contain extraneous whitespace
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Issue

• JDK-8243666: ModuleHashes attribute generated for JMOD and JAR files depends on timestamps

Reviewing

Using git

Checkout this PR locally:
$ git fetch https://git.openjdk.java.net/jdk11u-dev pull/916/head:pull/916
$ git checkout pull/916

Update a local copy of the PR:
$ git checkout pull/916
$ git pull https://git.openjdk.java.net/jdk11u-dev pull/916/head

Using Skara CLI tools

Checkout this PR locally:
$ git pr checkout 916

View PR using the GUI difftool:
$ git pr show -t 916

Using diff file

Download this PR as a diff file:
https://git.openjdk.java.net/jdk11u-dev/pull/916.diff

[bridgekeeper]

👋 Welcome back clanger! A progress list of the required criteria for merging this PR into pr/915 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.

[RealCLanger]

/clean

[openjdk]

@RealCLanger This backport pull request is now marked as clean

[mlbridge]

Webrevs

• 02: Full (a52c4ef4)
• 01: Full - Incremental (41262ce2)
• 00: Full (41262ce2)

[openjdk-notifier]

The dependent pull request has now been integrated, and the target branch of this pull request has been updated. This means that changes from the dependent pull request can start to show up as belonging to this pull request, which may be confusing for reviewers. To remedy this situation, simply merge the latest changes from the new target branch into this pull request by running commands similar to these in the local repository for your personal fork:

git checkout backport-8240734
git fetch https://git.openjdk.java.net/jdk11u-dev master
git merge FETCH_HEAD
# if there are conflicts, follow the instructions given by git merge
git commit -m "Merge master"
git push

[openjdk]

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

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

8243666: ModuleHashes attribute generated for JMOD and JAR files depends on timestamps

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 no new commits pushed to the master branch. If another commit should be pushed before you perform the /integrate command, your PR will be automatically rebased. If you prefer to avoid any potential automatic rebasing, please check the documentation for the /integrate command for further details.

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[RealCLanger]

GHA error unrelated - runtime/Thread/SuspendAtExit.java will be fixed with JDK-8283270.

[RealCLanger]

/integrate

[openjdk]

Going to push as commit 7c29f0e.
Since your change was applied there have been 9 commits pushed to the master branch:

• 03da67b: 8265261: java/nio/file/Files/InterruptCopy.java fails with java.lang.RuntimeException: Copy was not interrupted
• 9714b69: 8206330: Revisit com/sun/jdi/RedefineCrossEvent.java
• d568fc8: 8283420: [AOT] Exclude TrackedFlagTest/NotTrackedFlagTest in 11u because of intermittent java.lang.AssertionError: duplicate classes for name Ljava/lang/Boolean;
• bb54eeb: 8209883: ZGC: Compile without C1 broken
• 6e5000f: 8283424: compiler/loopopts/LoopUnswitchingBadNodeBudget.java fails with release VMs due to lack of -XX:+UnlockDiagnosticVMOptions
• cf52a6f: 8263364: sun/net/www/http/KeepAliveStream/KeepAliveStreamCloseWithWrongContentLength.java wedged in getInputStream
• f14b932: 8246494: introduce vm.flagless at-requires property
• e66e3e5: 8210108: sun/tools/jstatd test build failures after JDK-8210022
• dd6ba08: 8210649: AssertionError @ jdk.compiler/com.sun.tools.javac.comp.Modules.enter(Modules.java:244)

Your commit was automatically rebased without conflicts.

[openjdk]

@RealCLanger Pushed as commit 7c29f0e.

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