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! { dg-do compile }

! PR33162 INTRINSIC functions as ACTUAL argument

! Test case adapted from PR by Jerry DeLisle 

module m

implicit none

contains

  subroutine sub(a)

    interface

      function a(x)

        real :: a, x

        intent(in) :: x

      end function a

    end interface

    print *, a(4.0)

  end subroutine sub

end module m

use m

implicit none

EXTERNAL foo  ! implicit interface is undefined

call sub(foo) ! { dg-error "is not a function" }

end

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