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! { dg-do compile }

! Testcase from PR 17713

module fit_functions

  implicit none

contains

  subroutine gauss( x, a, y, dy, ma )

    double precision, intent(in)     :: x

    double precision, intent(in)     :: a(:)

    double precision, intent(out)    :: y

    double precision, intent(out)    :: dy(:)

    integer,          intent(in)     :: ma

  end subroutine gauss

end module fit_functions

subroutine mrqcof( x, y, sig, ndata, a, ia, ma )

  use fit_functions

  implicit none

  double precision, intent(in)   :: x(:), y(:), sig(:)

  integer,   intent(in)          :: ndata

  double precision, intent(in)   :: a(:)

  integer,   intent(in)          :: ia(:), ma

  integer                           i

  double precision                  yan, dyda(ma)

  do i = 1, ndata

     call gauss( x(i), a, yan, dyda, ma )

  end do

end subroutine mrqcof

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