closed/javax/swing/JComboBox/6246463/bug6246463.java deadlocks on MacOS

Stack trace:
2011-10-14 15:38:20
Full thread dump OpenJDK 64-Bit Server VM (21.0-b17 mixed mode):

"Attach Listener" daemon prio=5 tid=4313108480 nid=0x11cf4e000 waiting on condition [0]
   java.lang.Thread.State: RUNNABLE

"AWT-EventQueue-0" prio=5 tid=4313528320 nid=0x119839000 waiting on condition [4723011584]
   java.lang.Thread.State: TIMED_WAITING (sleeping)
	at java.lang.Thread.sleep(Native Method)
	at Util.blockTillDisplayed(Util.java:41)
	at bug6246463$2.run(bug6246463.java:58)
	at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:241)
	at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:705)
	at java.awt.EventQueue.access$000(EventQueue.java:101)
	at java.awt.EventQueue$3.run(EventQueue.java:666)
	at java.awt.EventQueue$3.run(EventQueue.java:664)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
	at java.awt.EventQueue.dispatchEvent(EventQueue.java:675)
	at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:240)
	at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:157)
	at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:146)
	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:142)
	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:134)
	at java.awt.EventDispatchThread.run(EventDispatchThread.java:91)

"Java2D Disposer" daemon prio=5 tid=4304904192 nid=0x1195ef000 in Object.wait() [4720615424]
   java.lang.Thread.State: WAITING (on object monitor)
	at java.lang.Object.wait(Native Method)
	- waiting on <33872237624> (a java.lang.ref.ReferenceQueue$Lock)
	at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:135)
	- locked <33872237624> (a java.lang.ref.ReferenceQueue$Lock)
	at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:151)
	at sun.java2d.Disposer.run(Disposer.java:145)
	at java.lang.Thread.run(Thread.java:722)

"Java2D Queue Flusher" daemon prio=5 tid=4312913920 nid=0x118bd9000 in Object.wait() [4710039552]
   java.lang.Thread.State: TIMED_WAITING (on object monitor)
	at java.lang.Object.wait(Native Method)
	- waiting on <33872233608> (a sun.java2d.opengl.OGLRenderQueue$QueueFlusher)
	at sun.java2d.opengl.OGLRenderQueue$QueueFlusher.run(OGLRenderQueue.java:194)
	- locked <33872233608> (a sun.java2d.opengl.OGLRenderQueue$QueueFlusher)

"AWT-Shutdown" prio=5 tid=4304302080 nid=0x106d34000 in Object.wait() [4409470976]
   java.lang.Thread.State: WAITING (on object monitor)
	at java.lang.Object.wait(Native Method)
	- waiting on <33872491936> (a java.lang.Object)
	at java.lang.Object.wait(Object.java:503)
	at sun.awt.AWTAutoShutdown.run(AWTAutoShutdown.java:287)
	- locked <33872491936> (a java.lang.Object)
	at java.lang.Thread.run(Thread.java:722)

"AWT-AppKit" daemon prio=5 tid=4304214016 nid=0x7fff70059cc0 runnable [0]
   java.lang.Thread.State: RUNNABLE

"MainThread" prio=5 tid=4304148480 nid=0x106a10000 in Object.wait() [4406177792]
   java.lang.Thread.State: WAITING (on object monitor)
	at java.lang.Object.wait(Native Method)
	- waiting on <33875939632> (a java.awt.EventQueue$1AWTInvocationLock)
	at java.lang.Object.wait(Object.java:503)
	at java.awt.EventQueue.invokeAndWait(EventQueue.java:1236)
	- locked <33875939632> (a java.awt.EventQueue$1AWTInvocationLock)
	at javax.swing.SwingUtilities.invokeAndWait(SwingUtilities.java:1346)
	at bug6246463.main(bug6246463.java:44)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:601)
	at com.sun.javatest.regtest.MainWrapper$MainThread.run(MainWrapper.java:94)
	at java.lang.Thread.run(Thread.java:722)

"Service Thread" daemon prio=5 tid=4312076288 nid=0x10680a000 runnable [0]
   java.lang.Thread.State: RUNNABLE

"C2 CompilerThread1" daemon prio=5 tid=4312074240 nid=0x106707000 waiting on condition [0]
   java.lang.Thread.State: RUNNABLE

"C2 CompilerThread0" daemon prio=5 tid=4312066048 nid=0x106604000 waiting on condition [0]
   java.lang.Thread.State: RUNNABLE

"Signal Dispatcher" daemon prio=5 tid=4312061952 nid=0x106501000 runnable [0]
   java.lang.Thread.State: RUNNABLE

"Finalizer" daemon prio=5 tid=4303704064 nid=0x105f7e000 in Object.wait() [4395094016]
   java.lang.Thread.State: WAITING (on object monitor)
	at java.lang.Object.wait(Native Method)
	- waiting on <33871123896> (a java.lang.ref.ReferenceQueue$Lock)
	at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:135)
	- locked <33871123896> (a java.lang.ref.ReferenceQueue$Lock)
	at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:151)
	at java.lang.ref.Finalizer$FinalizerThread.run(Finalizer.java:177)

"Reference Handler" daemon prio=5 tid=4303677440 nid=0x105e7b000 in Object.wait() [4394033152]
   java.lang.Thread.State: WAITING (on object monitor)
	at java.lang.Object.wait(Native Method)
	- waiting on <33871122744> (a java.lang.ref.Reference$Lock)
	at java.lang.Object.wait(Object.java:503)
	at java.lang.ref.Reference$ReferenceHandler.run(Reference.java:133)
	- locked <33871122744> (a java.lang.ref.Reference$Lock)

"main" prio=5 tid=4303415296 nid=0x100501000 in Object.wait() [4300210176]
   java.lang.Thread.State: WAITING (on object monitor)
	at java.lang.Object.wait(Native Method)
	- waiting on <33871903368> (a java.lang.Thread)
	at java.lang.Thread.join(Thread.java:1261)
	- locked <33871903368> (a java.lang.Thread)
	at java.lang.Thread.join(Thread.java:1335)
	at com.sun.javatest.regtest.MainWrapper.main(MainWrapper.java:71)

"VM Thread" prio=5 tid=4311992320 nid=0x105d78000 runnable 

"GC task thread#0 (ParallelGC)" prio=5 tid=4303642624 nid=0x10562d000 runnable 

"GC task thread#1 (ParallelGC)" prio=5 tid=4311750656 nid=0x105730000 runnable 

"VM Periodic Task Thread" prio=5 tid=4303753216 nid=0x10690d000 waiting on condition 

JNI global references: 297