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! { dg-do run }

! Test the fix for PR42736, in which an excessively rigorous dependency

! checking for the assignment generated an unnecessary temporary, whose

! rank was wrong.  When accessed by the scalarizer, a segfault ensued.

!

! Contributed by Tobias Burnus 

! Reported by Armelius Cameron 

!

module UnitValue_Module

  implicit none

  private

  public :: &

    operator(*), &

    assignment(=)

  type, public :: UnitValue

    real :: &

      Value = 1.0

    character(31) :: &

      Label

  end type UnitValue

  interface operator(*)

    module procedure ProductReal_LV

  end interface operator(*)

  interface assignment(=)

    module procedure Assign_LV_Real

  end interface assignment(=)

contains

  elemental function ProductReal_LV(Multiplier, Multiplicand) result(P_R_LV)

    real, intent(in) :: &

      Multiplier

    type(UnitValue), intent(in) :: &

      Multiplicand

    type(UnitValue) :: &

      P_R_LV

    P_R_LV%Value = Multiplier * Multiplicand%Value

    P_R_LV%Label = Multiplicand%Label

  end function ProductReal_LV

  elemental subroutine Assign_LV_Real(LeftHandSide, RightHandSide)

    real, intent(inout) :: &

      LeftHandSide

    type(UnitValue), intent(in) :: &

      RightHandSide

    LeftHandSide = RightHandSide%Value

  end subroutine Assign_LV_Real

end module UnitValue_Module

program TestProgram

  use UnitValue_Module

  implicit none

  type :: TableForm

    real, dimension(:,:), allocatable :: &

      RealData

  end type TableForm

  type(UnitValue) :: &

    CENTIMETER

  type(TableForm), pointer :: &

    Table

  allocate(Table)

  allocate(Table%RealData(10,5))

  CENTIMETER%value = 42

  Table%RealData = 1

  Table%RealData(:,1) = Table%RealData(:,1) * CENTIMETER

  Table%RealData(:,2) = Table%RealData(:,2) * CENTIMETER

  Table%RealData(:,3) = Table%RealData(:,3) * CENTIMETER

  Table%RealData(:,5) = Table%RealData(:,5) * CENTIMETER

!  print *, Table%RealData

  if (any (abs(Table%RealData(:,4) - 1) > epsilon(1.0))) call abort ()

  if (any (abs(Table%RealData(:,[1,2,3,5]) - 42) > epsilon(1.0))) call abort ()

end program TestProgram

! { dg-final { cleanup-modules "unitvalue_module" } }