https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108342
Andrew Pinski <pinskia at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Resolution|--- |INVALID Status|UNCONFIRMED |RESOLVED --- Comment #9 from Andrew Pinski <pinskia at gcc dot gnu.org> --- https://gcc.gnu.org/pipermail/gcc-patches/2003-July/110087.html This was done on purpose. GCC also rejects References too while clang accepts that (but I am not sure it gives the correct code for references of packed either which is why GCC started to reject it).