Just a note: you should NEVER have a 'using namespace' declaration at the top level of a normal header file. This forces all the names in that namespace into the global namespace of any source file including that header file, which basically completely defeats the point of namespaces.
It is OK to use using declarations at the top level of a source (.cc) file since the effect is entirely local to that .cc file. It's also OK to use them in _impl.hh files, since for practical purposes these are source (not header) files despite their extension. I just ran into a case where Ruby doesn't compile with MIPS because arch/mips/isa_traits.hh has "using namespace MipsISA;" at the end of it, so all of the MipsISA registers are globals, and there's a Debug in the MiscRegTags enum that conflicts with a Ruby class name. I just added a note to this effect at http://m5sim.org/wiki/index.php/Coding_Style#File_structure_and_modularity. Fortunately the fixes weren't too bad; I'll be pushing them soon. Steve _______________________________________________ m5-dev mailing list m5-dev@m5sim.org http://m5sim.org/mailman/listinfo/m5-dev
