Andi Kleen <[EMAIL PROTECTED]> writes: ... >> to make kernel work with GCC 4.3 and above. (Also note that gcc 4.2 already >> smart enough to break that code, but kernel is just lucky currently). > > How would it break the code exactly? It more sounded like an optimization > to me. Would it generate incorrect code without it?
See http://gcc.gnu.org/PR33294 for testcase which fails if compiled with gcc 4.2 and above. Yes, incorrect code can be generated without the patch as demonstrated by testcase, but i didn't analyze why kernel appears to work with 4.2 currently. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
