[Bug fortran/46301] [4.6 Regression] Missing diagnosis for "len=:"

[burnus at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46301

--- Comment #3 from Tobias Burnus <burnus at gcc dot gnu.org> 2010-11-04 
18:00:07 UTC ---
Created attachment 22285
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=22285
Draft patch

The following fails - but for the wrong reason (regarded as "len=*").

Error: Character length of component 's' needs to be a constant specification
expression at (1)

   subroutine test
      type t
        character(len=:), allocatable :: S
      end type t
      type(t) :: x
      x%S='abcdef'
   end subroutine