On Mon, 20 Oct 2025 09:53:50 GMT, Paul Hübner <[email protected]> wrote:
>> Hi all, >> >> This PR follows up on changes made in >> [JDK-8368875](https://bugs.openjdk.org/browse/JDK-8368875). I updated the >> documentation to reflect the new information gained. >> >> Furthermore, the investigation described in the issue yielded that we _must_ >> preserve the larval bit explicitly. I introduce a regression test. If we >> change the mark word preservation condition to `return (!is_unlocked() || >> !has_no_hash())` (i.e. what we had before), I have confirmed that we will >> crash a debug VM via failed assertion. Note that ZGC does not require mark >> word preservation. I've nonetheless decided to include it in case this >> behaviour is introduced later. >> >> Testing: tiers 1-3. > > Paul Hübner has updated the pull request incrementally with one additional > commit since the last revision: > > WhiteBox API. Looks good! ------------- Marked as reviewed by coleenp (Committer). PR Review: https://git.openjdk.org/valhalla/pull/1666#pullrequestreview-3357380394
