http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56974
--- Comment #2 from Tom Tromey <tromey at gcc dot gnu.org> --- (In reply to Jan Kratochvil from comment #1) > "&&": g++-4.8.2 for 'void f(int &&r) {}' produces > DW_TAG_rvalue_reference_type. > > Or do you mean something else? "ref qualifiers" is a term from C++11 relating to the mechanism for putting constraints on the receiver of a method call. E.g.: http://gcc.gnu.org/ml/gcc-patches/2013-04/msg00024.html