[lilliput-jdk17u:pr/20] RFR: 8312606: [Lilliput/JDK17] Cherry-pick: 8276333: jdk/jfr/event/oldobject/TestLargeRootSet.java failed "assert(!contains(edge->reference())) failed: invariant" [v2]

[Roman Kennke]

> After [JDK-8308296](https://bugs.openjdk.org/browse/JDK-8308296) we should also cherry-pick the follow-up fix [JDK-8276333](https://bugs.openjdk.org/browse/JDK-8276333) to avoid a mess when merging from upstream jdk17u.

Roman Kennke 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.

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Changes:
  - all: https://git.openjdk.org/lilliput-jdk17u/pull/54/files
  - new: https://git.openjdk.org/lilliput-jdk17u/pull/54/files/365d50e0..365d50e0

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=lilliput-jdk17u&pr=54&range=01
 - incr: https://webrevs.openjdk.org/?repo=lilliput-jdk17u&pr=54&range=00-01

  Stats: 0 lines in 0 files changed: 0 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/lilliput-jdk17u/pull/54.diff
  Fetch: git fetch https://git.openjdk.org/lilliput-jdk17u.git pull/54/head:pull/54

PR: https://git.openjdk.org/lilliput-jdk17u/pull/54