On Wed, 11 Jul 2007, Martin Orr wrote: > > I have done this. The file is arch/x86_64/kernel/signal.c: if I compile > this with gcc 20070627 then everything works, if I compile it with gcc > 20070707 then udevsettle hangs. This is independent of the gcc version used > to compile the rest of the kernel. (The dates refer to versions of the > Debian gcc-4.2 package and its dependencies.)
Can you do make arch/x86_64/kernel/signal.s with both compilers, and post the results somewhere? It's probably going to be so large, and have so many trivial differences (register allocation etc) that it will be hard-to-impossible to see the problem, but at least we can *try* to see if it might be obvious enough from comparing the assembly.. (Register allocation differences make comparisons like that really hard, but if the two compiler versions are close enough, they *might* end up having sufficiently similar register allocation that the stupid differences don't hide all the real differences). Linus - 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/