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module class_31_test_module
type :: Composed
integer :: x
end type Composed
type :: Wrapper
class(Composed), allocatable :: obj
end type Wrapper
contains
function init(obj) result(self)
type(Wrapper) :: self
class(Composed), intent(in) :: obj
! needed because lfortran does not automatically allocate this
allocate(self%obj)
self%obj = obj
end function init
end module class_31_test_module
program class_31
use class_31_test_module
implicit none
class(Composed), allocatable :: c
type(Wrapper) :: t
allocate(c)
c%x = 42
t = init(c)
print *, "value of t%obj%x: ", t%obj%x
if (t%obj%x /= 42) error stop
c%x = 3
! verify deep copy
print *, "value of t%obj%x: ", t%obj%x
if (t%obj%x == 3) error stop
end program class_31
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