https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70097
Martin Sebor <msebor at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |NEW Last reconfirmed| |2016-05-19 CC| |msebor at gcc dot gnu.org Ever confirmed|0 |1 Known to fail| |4.9.3, 5.3.0, 6.1.0, 7.0 --- Comment #1 from Martin Sebor <msebor at gcc dot gnu.org> --- Confirmed. Somehow the using declaration isn't working correctly and doesn't seem to have ever worked as expected for reference [lr]value references.