Please review this fix of a race condition in j.l.r.Reference/ReferenceQueue. See comments in the bug report for a description of the race. The race is being fixed by reordering a pair of volatile assignments.
CR: https://bugs.openjdk.java.net/browse/JDK-8132306 Webrev: http://cr.openjdk.java.net/~kbarrett/8132306/webrev.00/ Testing: jprt with default and hotspot testsets Locally tested race in original code by insertion of sleep in enqueue and verifying ReferenceEnqueue regression test fails consistently as described in the bug report. Locally tested fixed code by insertion of sleeps at various points and verifying ReferenceEnqueue regression test still passes.
