8259634: MemorySegment::asByteBuffer does not respect spatial bounds

[mcimadamore]

The byte buffers created from heap segments do not honor the javadoc - which says that the resulting buffer size should be equal to MemorySegment::byteSize, and that the buffer position should be zero.

The issue is that the NIO routine we have added to create heap buffers is using the wrong constructor, which doesn't do what we need. The fix is to simply use the proper, more complete constructor.

I've also re-enabled an unrelated test which was missing the @test annotation.

---

Progress

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Issue

• JDK-8259634: MemorySegment::asByteBuffer does not respect spatial bounds

Reviewers

• Alan Bateman (@AlanBateman - Reviewer)
• Chris Hegarty (@ChrisHegarty - Reviewer)

Download

$ git fetch https://git.openjdk.java.net/jdk16 pull/109/head:pull/109
$ git checkout pull/109

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Webrevs

• 00: Full (ffe451b)

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

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

8259634: MemorySegment::asByteBuffer does not respect spatial bounds

Reviewed-by: alanb, chegar

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[mcimadamore]

/integrate

[openjdk]

@mcimadamore Since your change was applied there has been 1 commit pushed to the master branch:

• 8a81cf1: 8259298: broken link in Stream::toList spec

Your commit was automatically rebased without conflicts.

Pushed as commit b03880e.

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