https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67491 Bug 67491 depends on bug 67150, which changed state.
Bug 67150 Summary: [c++-concepts] Expression constraint fails with dependent types used as a deduction constraint target https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67150 What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |RESOLVED Resolution|--- |FIXED