On Fri, 14 Nov 2008 16:51:08 +0000 David Howells <dhowells@xxxxxxxxxx> wrote: > Alan Cox <alan@xxxxxxxxxxxxxxxxxxx> wrote: > > > Current versions of gcc that I've tested get this all correct just fine > > for x86 at least. > > gcc version 4.1.2 20070925 (Red Hat 4.1.2-33) Newer gcc (4.3 and above) gets it right. > x86_64 - which doesn't do that. It uses asm volatile and an infinite for-loop. Which it seems 4.3 knows about > Surely having BUG() retreat through a noreturn function may lose important > state, such as the function that issued the bug as the compiler is under no > requirement to save the return value, and the file/line info may not be > available. Its arch specific code so arch specific things can be done. Alan -- To unsubscribe from this list: send the line "unsubscribe linux-serial" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
