https://gcc.gnu.org/bugzilla/show_bug.cgi?id=28901
--- Comment #17 from Andi Kleen <andi-gcc at firstfloor dot org> --- There were a few false or useless ones (e.g. related to macros and specific build configs). I didn't look through them all, but various were semi legitimate, but also very minor (small) so fixing it won't help much. I think one or two of the ones I looked at may have been real bugs. I still think the warning should not be in -Wall. thousand+ warnings in real projects is just not acceptable.
