[NPTL docs] pthread robustness and pthread_mutex_consistent

[Patrick Schlangen]

Hi Yubin,

> However some threads might die inadvertently with the lock hold,

I know it's not specifically answering your question, but how can a thread
in your application 'die'?

I'm just wondering how such a situation can happen. If you have an issue in
an application where locks are not properly released, you would usually debug
why that's happening and not try to work around the issue.

Best Regards

Patrick