http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47889
--- Comment #4 from Andrew Pinski <pinskia at gcc dot gnu.org> 2011-07-12 21:17:31 UTC --- (In reply to comment #2) > Confirmed. We should diagnose this. We do: t.c:1:13: warning: type of āsā does not match original declaration [enabled by default] t1.c:1:14: note: previously declared here --- CUT --- But we don't error out.