On Fri, 8 Sep 2006, Oliver Neukum wrote:
> > Again you have misunderstood. The original code was _not_ incorrect. I
> > was asking: Given the code as stated, would the assertion ever fail?
>
> I claim the right to call code that fails its own assertions incorrect. :-)
Touche!
> > The code _was_ correct for my purposes, namely, to illustrate a technical
> > point about the behavior of memory barriers.
>
> I would say that the code may fail the assertion purely based
> on the formal definition of a memory barrier. And do so in a subtle
> and inobvious way.
But what _is_ the formal definition of a memory barrier? I've never seen
one that was complete and correct.
Alan Stern
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