Well, the hash_fun.h header declares it in that namespace, which I actually just told him to use. std_ version does declare it in stl namespace but I don't know why it doesn't find it. corey On Mon, 28 Mar 2005 16:14:47 -0600, Eljay Love-Jensen <eljay@xxxxxxxxx> wrote: > Hi Parms, > > I think hash is in __gnu_cxx namespace. > > Try this instead: > using __gnu_cxx::hash; > > Also, I suggest you do not put using statements in your header files. Bad mojo. > > --Eljay > >