https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99846
Richard Biener <rguenth at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Ever confirmed|0 |1 Priority|P3 |P1 Status|UNCONFIRMED |NEW Last reconfirmed| |2021-04-08 --- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> --- Confirmed. It works with -std=c++17 but fails on trunk with -std=c++20 (where it works on the branch). Needs investigation.