Hello
I'm doing a comparative between fortran compiler and gfortran 8.1. Both compilers have very different behaviour for assignment polymorphic variables and I don't know who have reason or not, if both are applying standard fortran 2008.
I'm sending an example where gfortran works but intel give me errors. If I comment the zone of gfortran (into swap_elements_list subroutine) and uncomment the lines for Intel, then ifort works but gfortran give me errors.
Someone have an idea about this?
Program Check
implicit none
!> Type definitions
Type :: Refl_Type
integer,dimension(:), allocatable :: H
integer :: Mult =0
End Type Refl_Type
Type :: RefList_Type
integer :: Nref
class(refl_Type), dimension(:), allocatable :: Reflections
end Type RefList_Type
Type(RefList_Type) :: List
Type(Refl_Type), dimension(3) :: Refl_Ini
!> Variables
integer :: i
!> Init
Refl_Ini(1)%H=[1, 0, 0]; Refl_Ini(1)%Mult=1
Refl_Ini(2)%H=[0, 2, 0]; Refl_Ini(2)%Mult=2
Refl_Ini(3)%H=[0, 0, 3]; Refl_Ini(3)%Mult=3
List%Nref=3
List%Reflections=Refl_Ini
!> Print Step:1
do i=1, List%Nref
print '(i3,2x,3i4,2x,i3)', i,List%Reflections(i)%H, List%Reflections(i)%Mult
end do
print*,' '
print*,' '
!> Swap
call Swap_Elements_List(List, 1, 3)
!> Print Step:2
do i=1, List%Nref
print '(i3,2x,3i4,2x,i3)', i,List%Reflections(i)%H, List%Reflections(i)%Mult
end do
Contains
Subroutine Swap_Elements_List(List, i, j)
!---- Argument ----!
type (RefList_Type), intent(in out) :: List
integer, intent(in) :: i,j
!---- Local Variables ----!
class(Refl_Type), allocatable :: tmp
!> IFort
!tmp=List%reflections(i)
!List%reflections(i)=List%reflections(j)
!List%reflections(j)=tmp
!> Gfortran
associate(t1 => list%reflections(i), t2 => list%reflections(j), tt => tmp)
tt=t1
t1=t2
t2=tt
end associate
End Subroutine Swap_Elements_List
End Program Check