On Fri, 18 Sep 2026 12:49:59 GMT, Chen Liang <[email protected]> wrote:
>> The identity hash code of value objects currently can produce 0. A zero >> value is usually not anticipated for System.identityHashCode calls unless >> the argument is null; the 0 hash also cannot be cached. Thus, we should move >> away from the 0 hash. >> >> --------- >> - [x] I confirm that I make this contribution in accordance with the >> [OpenJDK Interim AI Policy](https://openjdk.org/legal/ai). > > Chen Liang has updated the pull request incrementally with one additional > commit since the last revision: > > Don't overmask src/java.base/share/classes/jdk/internal/misc/UnsafeConstants.java line 116: > 114: > 115: /** > 116: * The mask used to cut hashes to the hash field in the mark word. Is "cut hashes" the right term here? The `Unsafe.hashCodeMask()` on the other hand says: > Reports the mask used to fit hashcodes into the cache field of the mark word. While at it, this file will need a copyright year update. ------------- PR Review Comment: https://git.openjdk.org/jdk/pull/32660#discussion_r4060030581
