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How to find a concurrency bug – this was the question I asked myself some time ago. It is always very hard to find a concurrency bug. Mostly you have no idea when it happens or if it is really a concurrency issue or some nasty bit of code. If it is a concurrency issue the question is if the bug is in your code or in a supplied library? Will the problem happen only on multicore processors or on any machine? Besides the technical problem the customer is eager to get a solution and...