https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98530
--- Comment #2 from ro at CeBiTec dot Uni-Bielefeld.DE <ro at CeBiTec dot Uni-Bielefeld.DE> --- > --- Comment #1 from Nathan Sidwell <nathan at gcc dot gnu.org> --- > thanks, this smells like a broken solaris header. unnamed structs and unions > without typedef-names for linkage purposes are different entities in each > compilation, and thus an ODR land-mine. with the preprocessed code I can > figure that out. I see. Depending on what's up, I can see to have this fixed upstream for the future, and eventually via fixincludes if need be.