https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65608 Bug 65608 depends on bug 118507, which changed state.
Bug 118507 Summary: Erroneous 'invalid use of qualified-name' for member function defined with 'typedef' in a friend declaration https://gcc.gnu.org/bugzilla/show_bug.cgi?id=118507 What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |RESOLVED Resolution|--- |DUPLICATE