Challengemulti threaded test failure
On one of my machines, I can consistently get the following test failure, because of an exception throw here:
As you can see, we get an ObjectDisposedException here, which cause the test to fail. There is only one problem with that:
We only dispose the queue manager on the dispose method, and that can only be called if the test itself was completed.
On the face of it, it looks like I am doing things correctly, but there is a bug here. The CLR’s threading semantics are not broken, even though on first glance it appears so.
As a side note, people keep asking me how I blog so much. This post is a perfect example. When I started writing this blog post, I was truly stamped. By the time I finished, I already noticed where the bug was and fixed it.
Can you tell?
More posts in "Challenge" series:
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- (27 Sep 2018) The loop that leaks
- (03 Apr 2018) The invisible concurrency bug–Answer
- (02 Apr 2018) The invisible concurrency bug
- (31 Jan 2018) Find the bug in the fix–answer
- (30 Jan 2018) Find the bug in the fix
- (19 Jan 2017) What does this code do?
- (26 Jul 2016) The race condition in the TCP stack, answer
- (25 Jul 2016) The race condition in the TCP stack
- (28 Apr 2015) What is the meaning of this change?
- (26 Sep 2013) Spot the bug
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- (29 Apr 2011) Stop the leaks
- (23 Dec 2010) This code should never hit production
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- (03 Dec 2010) Querying relative information with RavenDB
- (29 Jun 2010) Find the bug
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