I\'ve heard a little bit about reference-to-reference problem and this resolution. I\'m not very good with C++ Committee terminology, but I understand the \"Moved to DR\" annota
DR only means "Defect Report", and to my knowledge, the described resolution hasn't made it (yet) to the standard. For this reason, I believe a strictly conforming C++03 implementation should not compile this code because of it is forming a reference to a reference.
[Edit] Just found a nice answer on this issue.