* Release fence guarantees that cacheArray field will published with a non-null value. * Without this fix, CacheValueMap.cacheArray can sometimes be seen as null.
This is a follow up to @PaulSandoz's feedback [here](https://mail.openjdk.java.net/pipermail/core-libs-dev/2020-August/068248.html) for the first attempt to fix [JDK-8251397](https://bugs.openjdk.java.net/browse/JDK-8251397). In this update, the fence has been moved to `initializeMap()` and added Paul's suggested comment. Annotating `classValueMap` with `@Stable` is outside the scope of this issue. ------------- Commit messages: - 8251397: Add release fence to ClassValueMap constructor Changes: https://git.openjdk.java.net/jdk/pull/94/files Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=94&range=00 Issue: https://bugs.openjdk.java.net/browse/JDK-8251397 Stats: 14 lines in 1 file changed: 12 ins; 0 del; 2 mod Patch: https://git.openjdk.java.net/jdk/pull/94.diff Fetch: git fetch https://git.openjdk.java.net/jdk pull/94/head:pull/94 PR: https://git.openjdk.java.net/jdk/pull/94
