http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47878
--- Comment #18 from Jerry DeLisle <jvdelisle at gcc dot gnu.org> 2011-02-24 17:10:50 UTC --- The old code did this: fbuf_seek (dtp->u.p.current_unit, n + seen_comma, SEEK_CUR); So we could adjust for comma as well.