https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107430 Bug 107430 depends on bug 92707, which changed state.
Bug 92707 Summary: type alias on type alias on lambda in unevaluated context does not work https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92707 What |Removed |Added ---------------------------------------------------------------------------- Status|NEW |RESOLVED Resolution|--- |FIXED