Thread.sleep() returns too early

[Artem Ananiev]

Hi, HotSpot team,

I have faced a problem with Thread.sleep(), which looks very weird from 
my perspective. The test is attached. It first forks a new thread and 
then performs some actions on the main and EDT threads. The first 
(forked) thread is a kind of timeout/hang/deadlock prevention stuff and 
contains a single sleep(600000) call, but I found it may return from it 
at any arbitrary moment without any exceptions, causing the test to fail 
with "timeout".

This only happens on Solaris. Any ideas?

Thanks,

Artem
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