https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67491 Bug 67491 depends on bug 67774, which changed state.
Bug 67774 Summary: [concepts] ICE when mismatching template arguments to concept https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67774 What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |RESOLVED Resolution|--- |FIXED