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! { dg-do run }

!

! Test the fix for PR35824, in which the interface assignment and

! negation did not work correctly.

!

! Contributed by Rolf Roth 

!

module typemodule

  type alltype

     double precision :: a

     double precision,allocatable :: b(:)

  end type

  interface assignment(=)

    module procedure at_from_at

  end interface

  interface operator(-)

    module procedure  neg_at

  end interface

contains

  subroutine at_from_at(b,a)

    type(alltype), intent(in) :: a

    type(alltype), intent(out) :: b

    b%a=a%a

    allocate(b%b(2))

    b%b=a%b

  end subroutine at_from_at

  function neg_at(a) result(b)

    type(alltype), intent(in) :: a

    type(alltype) :: b

    b%a=-a%a

    allocate(b%b(2))

    b%b=-a%b

  end function neg_at

end module

  use typemodule

  type(alltype) t1,t2,t3

  allocate(t1%b(2))

  t1%a=0.5d0

  t1%b(1)=1d0

  t1%b(2)=2d0

  t2=-t1

  if (t2%a .ne. -0.5d0) call abort

  if (any(t2%b .ne. [-1d0, -2d0])) call abort

  t1=-t1

  if (t1%a .ne. -0.5d0) call abort

  if (any(t1%b .ne. [-1d0, -2d0])) call abort

end

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