https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64467
--- Comment #16 from Segher Boessenkool <segher at gcc dot gnu.org> --- It turns out I built with config/os/generic, since I do not configure --with-newlib. It still is newlib though, and the dejagnu test knows that. Impedance mismatch, kaboom. It also seems that isctype for generic works better than the one for newlib?
