> 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. ------------- Changes: - all: https://git.openjdk.org/valhalla/pull/1666/files - new: https://git.openjdk.org/valhalla/pull/1666/files/cd2c092c..a75ca117 Webrevs: - full: https://webrevs.openjdk.org/?repo=valhalla&pr=1666&range=01 - incr: https://webrevs.openjdk.org/?repo=valhalla&pr=1666&range=00-01 Stats: 55 lines in 1 file changed: 30 ins; 17 del; 8 mod Patch: https://git.openjdk.org/valhalla/pull/1666.diff Fetch: git fetch https://git.openjdk.org/valhalla.git pull/1666/head:pull/1666 PR: https://git.openjdk.org/valhalla/pull/1666
