> > You can then make it a compile-time failure with something like > > extern unsigned int this_doesnt_exist_and_wont_link; > > is_contiguous_mask(x) ? (x) : this_doesnt_exist_and_wont_link; > > which returns "x" if it's ok, and an unlinkable expression if it isn't. Or you can use the already defined macros in kernel.h for this: /* Force a compilation error if condition is true */ #define BUILD_BUG_ON(condition) ((void)sizeof(char[1 - 2*!!(condition)])) /* Force a compilation error if condition is true, but also produce a result (of value 0 and type size_t), so the expression can be used e.g. in a structure initializer (or where-ever else comma expressions aren't permitted). */ #define BUILD_BUG_ON_ZERO(e) (sizeof(char[1 - 2 * !!(e)]) - 1) Sam - 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
