On Fri, 2 Feb 2007, Pavel Roskin wrote: > > I think sparse should distinguish between safe and unsafe preprocessor > operations on undefined symbols. It does. Try this: #define NECESSARY 1 #if NECESSARY || UNNECESSARY #endif and notice how sparse does NOT warn about UNNECESSARY not being defined. Because it doesn't matter. > For instance, "#if SYMBOL" has a very specific meaning No. #if SYMBOL has a very specific *problem* - it very possibly is a typo. So this is a warning I absolutely *want* for the kernel. If some other projects don't want it, fine, but it should be on by default as a warnign for potentially dangerous use of preprocessor symbols. Linus - To unsubscribe from this list: send the line "unsubscribe linux-sparse" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
