31 Input/output library [input.output]

31.12 File systems [filesystems]

31.12.10 Class directory_entry [fs.class.directory.entry]

31.12.10.5 Inserter [fs.dir.entry.io]

template<class charT, class traits>
  friend basic_ostream<charT, traits>&
    operator<<(basic_ostream<charT, traits>& os, const directory_entry& d);

Effects: Equivalent to: return os << d.path();