Wrong error triggered: integer constant required

The following code is valid Fortran but `F_Front` trigger an error as show below.

```fortran
module mod1

type type1
 integer(kind=8) :: int1
end type

contains

  subroutine sub1(t, char1)
    type(type1) :: t
    character char1*(*), char2*(t%int1)
  end subroutine

end module mod1
```

```bash
"dummy.f90:mod1", line 11: integer constant is required
```