`java/util/logging/ParentLoggersTest.java` has been observed failing intermittently - nut rarely - in the loom repo. After inspection of the code Logger::doSetParent was found to do multiple read of the volatile `parent` field. After changing the method to do a single read the test has no longer been observed failing.
------------- Commit messages: - 8377457: java/util/logging/ParentLoggersTest.java failed intermittently Changes: https://git.openjdk.org/jdk/pull/29634/files Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=29634&range=00 Issue: https://bugs.openjdk.org/browse/JDK-8377457 Stats: 13 lines in 2 files changed: 6 ins; 0 del; 7 mod Patch: https://git.openjdk.org/jdk/pull/29634.diff Fetch: git fetch https://git.openjdk.org/jdk.git pull/29634/head:pull/29634 PR: https://git.openjdk.org/jdk/pull/29634
