RFR: 8331030: langtools/tools/javac/tree tests fail with SOE with fastdebug and -Xcomp [v2]

[Christian Stein]

> Please review this change that now uses a source generator and compiler task to verify no SOE is thrown.
> 
> This change replaces over 1000 lines of code that were being compiled by running this test as well as other tests crawling over test files. Some of those crawling tests failed to parse this formerly large file. The new size of this test file should be no problem for them.
> 
> The level of nesting is increased from 567 to 1000.

Christian Stein has updated the pull request incrementally with one additional commit since the last revision:

  Introduce constant for the depth of nesting levels

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

Changes:
  - all: https://git.openjdk.org/jdk/pull/18939/files
  - new: https://git.openjdk.org/jdk/pull/18939/files/91be173c..6d51348f

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=18939&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=18939&range=00-01

  Stats: 4 lines in 1 file changed: 2 ins; 0 del; 2 mod
  Patch: https://git.openjdk.org/jdk/pull/18939.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/18939/head:pull/18939

PR: https://git.openjdk.org/jdk/pull/18939