https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71965
Jason Merrill <jason at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|ASSIGNED |RESOLVED Resolution|--- |FIXED Target Milestone|9.3 |10.0 --- Comment #13 from Jason Merrill <jason at gcc dot gnu.org> --- The testcase was fixed by the workaround in GCC 8, and the underlying issue was fixed by the concepts overhaul in GCC 10.