https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85098
Richard Biener <rguenth at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Keywords| |link-failure Status|UNCONFIRMED |NEW Last reconfirmed| |2018-03-28 Version|unknown |7.3.1 Ever confirmed|0 |1 --- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> --- -std=c++17 only works since GCC 7, pre-GCC 7 it fails the same way. It also works when optimization is enabled.