https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101263
Patrick Palka <ppalka at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Ever confirmed|0 |1 Assignee|unassigned at gcc dot gnu.org |ppalka at gcc dot gnu.org Last reconfirmed| |2021-07-13 CC| |ppalka at gcc dot gnu.org Status|UNCONFIRMED |ASSIGNED --- Comment #1 from Patrick Palka <ppalka at gcc dot gnu.org> --- It looks like emplace-deref was made constexpr in R1 of the paper, but we only implemented R0. Fortunately this added constexpr seems to be the only functional change in R1 vs R0. We might first need to implement P2231 (for constexpr optional) before this function can be properly constexpr.