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ACCESS_ONCE()

ACCESS_ONCE()

Posted Aug 13, 2012 8:02 UTC (Mon) by jezuch (subscriber, #52988)
In reply to: ACCESS_ONCE() by daglwn
Parent article: ACCESS_ONCE()

> C compilers detect it all the time. It is a trivial analysis. Users tend to ignore the warnings, however.

It is. And they do. And every time I see someone fixing a "use of undefined variable" warning by initializing it to zero at declaration point, I cringe. I've seen it in stable updates to the kernel a lot...


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ACCESS_ONCE()

Posted Aug 13, 2012 16:31 UTC (Mon) by daglwn (guest, #65432) [Link]

Absolutely. One needs to first understand _why_ the warning is there before fixing it. Warnings don't replace understanding.


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