RFR: 8311175: Move BufWriter::asByteBuffer to BufWriterImpl

Fri Jun 30 14:50:59 UTC 2023

As discussed on the mailing list https://mail.openjdk.org/pipermail/classfile-api-dev/2023-June/000381.html, BufWriter::asByteBuffer has a behavior not suitable for API and is only used by internal StackMapGenerator/StackCounter, so it will be converted to an internal API.

Somehow the ByteBuffer needs to be sliced, or StackMapGenerator encounters IOOBE. Not sure what the exact cause was.

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Commit messages:
 - Convert asByteBuffer to an internal API

Changes: https://git.openjdk.org/jdk/pull/14736/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=14736&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8311175
  Stats: 9 lines in 4 files changed: 0 ins; 6 del; 3 mod
  Patch: https://git.openjdk.org/jdk/pull/14736.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/14736/head:pull/14736

PR: https://git.openjdk.org/jdk/pull/14736