https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70156
Andrew Pinski <pinskia at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Keywords| |diagnostic Status|UNCONFIRMED |NEW Last reconfirmed| |2016-07-11 Ever confirmed|0 |1 --- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> --- Confirmed, most likely GCC is not instainating the template here so GCC decides it is incomplete.