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>The 'hold' variable is needed in both cases to prevent the optimizer >from dropping the first clause, because some compilers don't >understand 'volatile' as meaning that seemingly ineffectual reads >shouldn't be dropped. Borland was notorious for this. GCC does get that right, though. p. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.rutgers.edu Please read the FAQ at http://www.altern.org/andrebalsa/doc/lkml-faq.html | ||||||||||||
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