[Bug fortran/63932] New: posible problem with allocatable character(:)

["valeryweber at hotmail dot com" <gcc-bugzilla at gcc dot gnu dot org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63932

            Bug ID: 63932
           Summary: posible problem with allocatable character(:)
           Product: gcc
           Version: 4.9.2
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: fortran
          Assignee: unassigned at gcc dot gnu.org
          Reporter: valeryweber at hotmail dot com

Dear All
the following code seems to produce the wrong result with 4.9.2.
thanks
v

cat test.f90
module mod
  type :: t
     character(:), allocatable :: c
     integer :: i
   contains
     procedure, pass :: get
  end type t
  type :: u
     character(:), allocatable :: c
  end type u
contains
  subroutine get(this, a)
    class(t), intent(in) :: this
    character(:), allocatable, intent(out), optional :: a
    if(present(a)) a=this%c
  end subroutine get
end module mod

program test
  use mod
  type(t) :: a
  type(u) :: b
  a%c='soemthing'
  call a%get(a=b%c)
  write(*,*) b%c
end program test

gfortran-4.9.2  test.f90 
./a.out