[Bug c++/70610] [6 regression] error: invalid initialization of non-const reference of type

[ppalka at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70610

--- Comment #6 from Patrick Palka <ppalka at gcc dot gnu.org> ---
uhhh... here: https://gcc.gnu.org/ml/gcc-patches/2016-04/msg00482.html