以下Fortran代码有什么问题？ （gfortran）（1）中的DTIO虚拟参数必须是ASSUMED SHAPE ARRAY

Question

我有以下代码：

module scheme

  type, abstract :: scheme_object
   contains
     procedure, pass :: generic_scheme_print => print_scheme_object
     generic, public :: write (formatted) => generic_scheme_print
  end type scheme_object

  abstract interface
     subroutine packageable_procedure(  )
       import scheme_object
     end subroutine packageable_procedure
  end interface
contains

  subroutine print_scheme_object(this, unit, iotype, v_list, iostat, iomsg)
    class(scheme_object), intent(in) :: this
    integer, intent(in)         :: unit
    character(*), intent(in)    :: iotype
    integer, intent(in)         :: v_list (:)
    integer, intent(out)        :: iostat
    character(*), intent(inout) :: iomsg
    iostat = 1
  end subroutine print_scheme_object

  subroutine packaged_cons( )
  end subroutine packaged_cons

  function make_primitive_procedure_object( proc1 ) result( retval )
    class(scheme_object), pointer :: retval
    procedure(packageable_procedure), pointer :: proc1
  end function make_primitive_procedure_object


  subroutine ll_setup_global_environment()
    procedure(packageable_procedure), pointer :: proc1
    class(scheme_object), pointer :: proc_obj_to_pack
    proc1 => packaged_cons
    proc_obj_to_pack => make_primitive_procedure_object( proc1 )
  end subroutine ll_setup_global_environment

end module scheme

program main
end program main

此代码使用ifort 19.1.1.217 20200306可以正常编译，可以运行并且不执行任何操作（按预期方式进行。）>

但是，使用gfortran编译失败，并显示一条错误消息：

   16 |   subroutine print_scheme_object(this, unit, iotype, v_list, iostat, iomsg)
      |                                                           1
Error: DTIO dummy argument at (1) must be an ASSUMED SHAPE ARRAY
将“ v_list”声明的长度更改为任何整数都会产生两个相同的消息：

   16 |   subroutine print_scheme_object(this, unit, iotype, v_list, iostat, iomsg)
      |                                                           1
Error: DTIO dummy argument at (1) must be an ASSUMED SHAPE ARRAY

   16 |   subroutine print_scheme_object(this, unit, iotype, v_list, iostat, iomsg)
      |                                                           1
Error: DTIO dummy argument at (1) must be an ASSUMED SHAPE ARRAY
问题出在哪里？

我有以下代码：模块方案类型，摘要:: scheme_object包含过程，传递:: generic_scheme_print => print_scheme_object常规，公共::写入（格式化）...

Answer 1