[jdk21u-dev] RFR: 8354893: [REDO BACKPORT] javac crashes while adding type annotations to the return type of a constructor (JDK-8320001) [v2]

[Liam Miller-Cushon]

> [JDK-8354893](https://bugs.openjdk.org/browse/JDK-8354893) is a redo of the backport of [JDK-8320001](https://bugs.openjdk.org/browse/JDK-8320001), which is a follow-up to [JDK-8225377](https://bugs.openjdk.org/browse/JDK-8225377).

Liam Miller-Cushon 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 two additional commits since the last revision:

 - Merge remote-tracking branch 'origin/master' into JDK-8354893
 - 8354893: [REDO BACKPORT] javac crashes while adding type annotations to the return type of a constructor (JDK-8320001)

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

Changes:
  - all: https://git.openjdk.org/jdk21u-dev/pull/1675/files
  - new: https://git.openjdk.org/jdk21u-dev/pull/1675/files/2c6c1f71..d7dbd8f5

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk21u-dev&pr=1675&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk21u-dev&pr=1675&range=00-01

  Stats: 301 lines in 9 files changed: 259 ins; 6 del; 36 mod
  Patch: https://git.openjdk.org/jdk21u-dev/pull/1675.diff
  Fetch: git fetch https://git.openjdk.org/jdk21u-dev.git pull/1675/head:pull/1675

PR: https://git.openjdk.org/jdk21u-dev/pull/1675