https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67491 Bug 67491 depends on bug 82110, which changed state.
Bug 82110 Summary: Concept for default constructing works with new T, not with new T[1] https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82110 What |Removed |Added ---------------------------------------------------------------------------- Status|ASSIGNED |RESOLVED Resolution|--- |FIXED