Messages in this thread | | | From | dewar@gnat ... | Subject | Re: [PATCH] C undefined behavior fix | Date | Mon, 7 Jan 2002 18:11:05 -0500 (EST) |
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<<You're not allowed to be that smart wrt volatile. If the programmer says the value might change unpredictably and should not be optimized, then It Is So and the compiler must respect that even if it determines It Cannot Possibly Happen. >>
Indeed, this is the case, for example, you may have a hardware monitor on the bus, and you are looking for this address, or some external process may be modifying the location. Or you may legitimately use volatile so that your debugger works as expected on this location. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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