https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82141
--- Comment #20 from Eric Botcazou <ebotcazou at gcc dot gnu.org> --- > * I suspect these are the key difference - since the fail is occurring in > building libada, AFAICS - plus we don't typically disable multilibs for a > general Darwin toolchain. In this case it seems to be the default multilib > that's failing (so probably not the significant effect) > > --disable-libada --disable-multilib Yes, there are differences, but they're not supposed to have any effect on the propagation of exceptions within the compiler, unless by accident of course.