Some sound tests rarely hangs because of incorrect synchronization

I just found one of the reason why some of our tests hangs. Example of the test:
closed/javax/sound/sampled/Clip/bug5070081.java

The problem is that the tests uses this pattern:
clip.start();
while(clip.isRunning());

The status running or not is updated on a different thread, but our clip implementations lack of synchronization of getters and the hotspot inline such methods to while(true).