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! { dg-do run }
!
! PR fortran/51972
! Also tests fixes for PR52102
!
! Check whether DT assignment with polymorphic components works.
!
subroutine test1 ()
type t
integer :: x
end type t
type t2
class(t), allocatable :: a
end type t2
type(t2) :: one, two
one = two
if (allocated (one%a)) call abort ()
allocate (two%a)
two%a%x = 7890
one = two
if (one%a%x /= 7890) call abort ()
deallocate (two%a)
one = two
if (allocated (one%a)) call abort ()
end subroutine test1
subroutine test2 ()
type t
integer, allocatable :: x(:)
end type t
type t2
class(t), allocatable :: a
end type t2
type(t2) :: one, two
one = two
if (allocated (one%a)) call abort ()
allocate (two%a)
one = two
if (.not.allocated (one%a)) call abort ()
if (allocated (one%a%x)) call abort ()
allocate (two%a%x(2))
two%a%x(:) = 7890
one = two
if (any (one%a%x /= 7890)) call abort ()
deallocate (two%a)
one = two
if (allocated (one%a)) call abort ()
end subroutine test2
subroutine test3 ()
type t
integer :: x
end type t
type t2
class(t), allocatable :: a(:)
end type t2
type(t2) :: one, two
! Test allocate with array source - PR52102
allocate (two%a(2), source = [t(4), t(6)])
if (allocated (one%a)) call abort ()
one = two
if (.not.allocated (one%a)) call abort ()
if ((one%a(1)%x /= 4)) call abort ()
if ((one%a(2)%x /= 6)) call abort ()
deallocate (two%a)
one = two
if (allocated (one%a)) call abort ()
! Test allocate with no source followed by assignments.
allocate (two%a(2))
two%a(1)%x = 5
two%a(2)%x = 7
if (allocated (one%a)) call abort ()
one = two
if (.not.allocated (one%a)) call abort ()
if ((one%a(1)%x /= 5)) call abort ()
if ((one%a(2)%x /= 7)) call abort ()
deallocate (two%a)
one = two
if (allocated (one%a)) call abort ()
end subroutine test3
subroutine test4 ()
type t
integer, allocatable :: x(:)
end type t
type t2
class(t), allocatable :: a(:)
end type t2
type(t2) :: one, two
if (allocated (one%a)) call abort ()
if (allocated (two%a)) call abort ()
allocate (two%a(2))
if (allocated (two%a(1)%x)) call abort ()
if (allocated (two%a(2)%x)) call abort ()
allocate (two%a(1)%x(3), source=[1,2,3])
allocate (two%a(2)%x(5), source=[5,6,7,8,9])
one = two
if (.not. allocated (one%a)) call abort ()
if (.not. allocated (one%a(1)%x)) call abort ()
if (.not. allocated (one%a(2)%x)) call abort ()
if (size(one%a) /= 2) call abort()
if (size(one%a(1)%x) /= 3) call abort()
if (size(one%a(2)%x) /= 5) call abort()
if (any (one%a(1)%x /= [1,2,3])) call abort ()
if (any (one%a(2)%x /= [5,6,7,8,9])) call abort ()
deallocate (two%a(1)%x)
one = two
if (.not. allocated (one%a)) call abort ()
if (allocated (one%a(1)%x)) call abort ()
if (.not. allocated (one%a(2)%x)) call abort ()
if (size(one%a) /= 2) call abort()
if (size(one%a(2)%x) /= 5) call abort()
if (any (one%a(2)%x /= [5,6,7,8,9])) call abort ()
deallocate (two%a)
one = two
if (allocated (one%a)) call abort ()
if (allocated (two%a)) call abort ()
end subroutine test4
call test1 ()
call test2 ()
call test3 ()
call test4 ()
end
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