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! { dg-do compile }

!

! PR 42677: [4.5 Regression] Bogus Error: Ambiguous interfaces '...' in intrinsic assignment operator

!

! Contributed by Harald Anlauf 

module mod1

  implicit none

  type t_m

     integer :: i = 0

  end type t_m

!------------------------------------------------------------------------------

  interface assignment (=)

     module procedure assign_m

  end interface

!------------------------------------------------------------------------------

contains

  subroutine assign_m (y, x)

    type(t_m) ,intent(inout) :: y

    type(t_m) ,intent(in)    :: x

  end subroutine assign_m

end module mod1

!==============================================================================

module mod2

  use mod1, only: t_m, assignment(=)

  implicit none

  type t_atm

     integer :: k

  end type t_atm

!------------------------------------------------------------------------------

  interface assignment(=)

     module procedure assign_to_atm

  end interface

!------------------------------------------------------------------------------

  interface

     pure subroutine delete_m (x)

       use mod1

       type(t_m) ,intent(in) :: x

     end subroutine delete_m

  end interface

!------------------------------------------------------------------------------

contains

  subroutine assign_to_atm (atm, r)

    type(t_atm) ,intent(inout) :: atm

    integer     ,intent(in)    :: r

  end subroutine assign_to_atm

end module mod2

! { dg-final { cleanup-modules "mod1 mod2" } }