test/jdk/java/util/concurrent/tck/ForkJoinTask8Test.java

8227235: rare failures in testForkHelpQuiesce tck tests
Reviewed-by: martin, alanb

*** 557,566 ****
--- 557,568 ----
          RecursiveAction a = new CheckedRecursiveAction() {
              protected void realCompute() {
                  AsyncFib f = new AsyncFib(8);
                  assertSame(f, f.fork());
                  helpQuiesce();
+                 while (!f.isDone()) // wait out race
+                     ;
                  assertEquals(0, getQueuedTaskCount());
                  f.checkCompletedNormally();
              }};
          testInvokeOnPool(pool, a);
      }