https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63235
--- Comment #9 from H.J. Lu <hjl.tools at gmail dot com> --- (In reply to Andi Kleen from comment #8) > Yes it doesn't happen when compiling with 4.8 branch tip. So has been fixed. > > Anyways i'm still going to submit the patch to make the opensuse 13.1 build > work again. I don't think it should hurt anything here to use ifdef. The difference is run-time check vs compile-time check.