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! { dg-do compile }

! { dg-options "-std=legacy" }

!

! PR20866 - A statement function cannot be recursive.

! Contributed by Joost VandeVondele 

!

! Modified 20051110 to check that regressions PR24655 and PR24755

! are fixed. Thanks to pavarini@pv.infn.it and tdeutsch@cea.fr for

! the tests.

!

  INTEGER :: i, st1, st2, st3, lambda, n

  REAL :: x, z(2,2)

  character(8) :: ch

  real(8)   :: fi, arg, sigma, dshpfunc

  real(8), parameter :: one=1d0

!

! Test check for recursion via other statement functions, string

! length references, function actual arguments and array index

! references.

!

  st1 (i) = len (ch(st2 (1):8))

  st2 (i) = max (st3 (1), 4)

  st3 (i) = 2 + cos (z(st1 (1), i)) ! { dg-error "is recursive" }

!

! Test the two regressions.

!

  fi (n) = n *one

  dshpfunc (arg)=-lambda/sigma*(arg/sigma)**(lambda-1)*exp(-(arg/sigma)**lambda)

!

! References to each statement function.

!

  write(6,*) st1 (1), fi (2), dshpfunc (1.0_8)

  END