On Wed, Oct 9, 2013 at 11:16 AM, Jakub Jelinek <ja...@redhat.com> wrote: > > Confirmed as gcc bug, filed http://gcc.gnu.org/PR58670 > Seems all of 4.[6-9] miscompile it. Will have a look tomorrow > unless somebody beats me to it. But historically, the case where > asm goto labels jump to fallthru basic block had numerous problems in the > past.
Ok, so it isn't even specific for x86-32, because your test-case shows the bug for me on 64-bit too. Apparently we just have a harder time hitting it in practice in the kernel on x86-64./ Too bad. It makes me nervous about all our _traditional_ uses of asm goto too, never mind the new ones.. Linus -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/