[jdk26] RFR: 8375314: Parallel: Crash iterating over unloaded classes for ObjectCountAfterGC event

Fri Jan 23 09:14:33 UTC 2026

Hi all,

  This pull request contains a backport of commit [f3381f0f](https://github.com/openjdk/jdk/commit/f3381f0ffe2207e1765558f6f49e5a0280a3f920) from the [openjdk/jdk](https://git.openjdk.org/jdk) repository.

  The commit being backported was authored by Thomas Schatzl on 22 Jan 2026 and was reviewed by Roman Kennke, Stefan Johansson and Ivan Walulya.

There has been a merge error in `collectedHeap.inline.hpp` in the copyright line, the dates did not match up.

  Thanks!

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Commit messages:
 - 8375314: Parallel: Crash iterating over unloaded classes for ObjectCountAfterGC event

Changes: https://git.openjdk.org/jdk/pull/29381/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=29381&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8375314
  Stats: 145 lines in 7 files changed: 129 ins; 11 del; 5 mod
  Patch: https://git.openjdk.org/jdk/pull/29381.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/29381/head:pull/29381

PR: https://git.openjdk.org/jdk/pull/29381