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module write_19_mod
implicit none
type :: t
integer :: x = 42
contains
procedure, private :: write_t
generic :: write(formatted) => write_t
end type t
contains
subroutine write_t(self, unit, iotype, v_list, iostat, iomsg)
class(t), intent(in) :: self
integer, intent(in) :: unit
character(*), intent(in) :: iotype
integer, intent(in) :: v_list(:)
integer, intent(out) :: iostat
character(*), intent(inout) :: iomsg
if (iotype /= 'DT') error stop
if (self%x /= 42) error stop
iostat = 0
end subroutine
end module
module write_19_io
use write_19_mod, only: t
implicit none
contains
subroutine print_it(obj)
class(t), intent(in) :: obj
write(*,'(dt)') obj
end subroutine
end module
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