https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68491
--- Comment #11 from Uroš Bizjak <ubizjak at gmail dot com> --- (In reply to Andy Lutomirski from comment #9) > I'm a bit late to the party, but this patch seems dubious to me. > __get_cpuid_max() fails to distinguish between CPUs that have max level 0 > (although I doubt that any such CPUs exist) and CPUs that don't have CPUID > at all. No, cpuid leaf 0 will never return zero [1]. [1] https://en.wikipedia.org/wiki/CPUID#EAX.3D0:_Highest_Function_Parameter
