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! Test for https://github.com/lfortran/lfortran/issues/7640
! Deferred function on polymorphic member returned wrong results (all zeros)
! MRE from issue comment by kmr-srbh
module class_101_mod
type, abstract :: AbsType
contains
procedure(method2), deferred :: method2
end type AbsType
abstract interface
function method2(self,arr) result(a)
import
class(AbsType), intent(in) :: self
integer, intent(in) :: arr(:)
integer :: a(size(arr))
end function method2
end interface
type :: SomeType
integer, allocatable :: arr(:)
class(AbsType), allocatable :: obj
contains
procedure :: method1
end type SomeType
type, extends(AbsType) :: MyType
contains
procedure :: method2 => my_method2
end type MyType
contains
subroutine method1(self)
class(SomeType), intent(inout) :: self
self%arr = self%obj%method2(self%arr)
end subroutine method1
function my_method2(self, arr) result(a)
class(MyType), intent(in) :: self
integer, intent(in) :: arr(:)
integer :: a(size(arr))
integer :: i
do i = 1, size(arr)
a(i) = arr(i) * 2
end do
end function my_method2
end module class_101_mod
program class_101
use class_101_mod
implicit none
class(SomeType), allocatable :: s
allocate(s)
allocate(s%arr(3))
allocate(MyType :: s%obj)
s%arr = [1, 2, 3]
call s%method1()
if (s%arr(1) /= 2) error stop
if (s%arr(2) /= 4) error stop
if (s%arr(3) /= 6) error stop
print *, "PASS"
end program class_101
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