http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49732
--- Comment #5 from Eric Botcazou <ebotcazou at gcc dot gnu.org> 2011-07-14 13:33:41 UTC --- > Ah, I see. Well, it looks it's -gnatafno option which triggers the error. -gnatafno is -gnata -gnatf -gnatn -gnato. Can you further narrow it down?