move_alloc for types holding allocatable members

[Alberto Luaces <aluaces@udc.es>]

Hello,

I am investigating a memory leak involving "move_alloc" and data types
having allocatable members themselves.

It seems that after a move_alloc call over an array, the allocatable
members of the types that the array is holding are not synchronized, and
thus a leak happens when the array is eventually deallocated.

I have a test case, but had no luck when trying to find similar issues
in the bug tracker.  Is this a known problem (gfortran 5.2.1)?

Thanks,

Alberto

--8<---------------cut here---------------start------------->8---
module alloctest

  type myallocatable
     integer, allocatable:: i(:)
  end type myallocatable

contains
  subroutine f(num, array)
    implicit none
    integer, intent(in) :: num
    integer :: i
    type(myallocatable):: array(:)

    do i = 1, num
       allocate(array(i)%i(5))
    end do

  end subroutine f
end module alloctest

program name
  use alloctest
  implicit none
  type(myallocatable), allocatable:: myarray(:), mytemp(:)

  allocate(myarray(7))
  call f(size(myarray), myarray)

  myarray(3)%i = 6
  print *, myarray(3)%i

  allocate(mytemp(20))
  call move_alloc(mytemp, myarray)

  print *, myarray(3)%i

  deallocate(myarray)
end program name
--8<---------------cut here---------------end--------------->8---

-- 
Alberto