31 Input/output library [input.output]

31.12 File systems [filesystems]

31.12.6 Class path [fs.class.path]

31.12.6.9 Hash support [fs.path.hash]

template<> struct hash<filesystem::path>;
For an object p of type filesystem​::​path, hash<filesystem​::​path>()(p) evaluates to the same result as filesystem​::​hash_­value(p).