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! { dg-do run }

! Test the fix for pr22146, where and elemental subroutine with

! array actual arguments would cause an ICE in gfc_conv_function_call.

! This test checks that the main uses for elemental subroutines work

! correctly; namely, as module procedures and as procedures called

! from elemental functions. The compiler would ICE on the former with

! the first version of the patch.

!

! Contributed by Paul Thomas   

module type

  type itype

    integer :: i

    character(1) :: ch

  end type itype

end module type

module assign

  interface assignment (=)

    module procedure itype_to_int

  end interface

contains

  elemental subroutine itype_to_int (i, it)

    use type

    type(itype), intent(in) :: it

    integer, intent(out) :: i

    i = it%i

  end subroutine itype_to_int

  elemental function i_from_itype (it) result (i)

    use type

    type(itype), intent(in) :: it

    integer :: i

    i = it

  end function i_from_itype

end module assign

program test_assign

  use type

  use assign

  type(itype) :: x(2, 2)

  integer :: i(2, 2)

! Test an elemental subroutine call from an elementary function.

  x = reshape ((/(itype (j, "a"), j = 1,4)/), (/2,2/))

  forall (j = 1:2, k = 1:2)

    i(j, k) = i_from_itype (x (j, k))

  end forall

  if (any(reshape (i, (/4/)).ne.(/1,2,3,4/))) call abort ()

! Check the interface assignment (not part of the patch).

  x = reshape ((/(itype (j**2, "b"), j = 1,4)/), (/2,2/))

  i = x

  if (any(reshape (i, (/4/)).ne.(/1,4,9,16/))) call abort ()

! Use the interface assignment within a forall block.

  x = reshape ((/(itype (j**3, "c"), j = 1,4)/), (/2,2/))

  forall (j = 1:2, k = 1:2)

    i(j, k) = x (j, k)

  end forall

  if (any(reshape (i, (/4/)).ne.(/1,8,27,64/))) call abort ()

end program test_assign

! { dg-final { cleanup-modules "type assign" } }