RFR: 8369021: A crash in ConstantPool::klass_at_impl [v2]

[Jan Kratochvil]

> https://bugs.openjdk.org/browse/JDK-8369021

Jan Kratochvil has updated the pull request with a new target base due to a merge or a rebase. The incremental webrev excludes the unrelated changes brought in by the merge/rebase. The pull request contains four additional commits since the last revision:

 - Merge branch 'master' into linkclass
 - Make an alternative fix in compute_enclosing_class
 - Revert "8369021: A crash in ConstantPool::klass_at_impl"
   
   This reverts commit 026fcb1b21729e41524169c7f78855e8794ddae2.
 - 8369021: A crash in ConstantPool::klass_at_impl

-------------

Changes:
  - all: https://git.openjdk.org/jdk/pull/27595/files
  - new: https://git.openjdk.org/jdk/pull/27595/files/026fcb1b..b0be560b

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=27595&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=27595&range=00-01

  Stats: 13515 lines in 520 files changed: 8508 ins; 2694 del; 2313 mod
  Patch: https://git.openjdk.org/jdk/pull/27595.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/27595/head:pull/27595

PR: https://git.openjdk.org/jdk/pull/27595