Unable to use access specifiers in submodule

Compiling the following code snippet:

module leader
      implicit none
      integer,private::rank
end module leader
submodule(leader) officer
      implicit none
      integer,private::file
end submodule officer

I get the following error:

error #6848: This attribute specification is valid only in the specification part of a module.   [PRIVATE]
      integer,private::file
--------------^

I think the standard allows this, am I writing something wrong or is this a bug?