gcc/testsuite/gfortran.dg/recursive_statement_functions.f90

   1 ! { dg-do compile }
   2 ! PR20866 - A statement function cannot be recursive.
   3 ! Contributed by Joost VandeVondele <jv244@cam.ac.uk>
   4 !
   5 ! Modified 20051110 to check that regressions PR24655 and PR24755
   6 ! are fixed. Thanks to pavarini@pv.infn.it and tdeutsch@cea.fr for
   7 ! the tests.
   8 !
   9   INTEGER :: i, st1, st2, st3, lambda, n
  10   REAL :: x, z(2,2)
  11   character(8) :: ch
  12   real(8)   :: fi, arg, sigma, dshpfunc
  13   real(8), parameter :: one=1d0
  14 !
  15 ! Test check for recursion via other statement functions, string
  16 ! length references, function actual arguments and array index
  17 ! references.
  18 !
  19   st1 (i) = len (ch(st2 (1):8))
  20   st2 (i) = max (st3 (1), 4)
  21   st3 (i) = 2 + cos (z(st1 (1), i)) ! { dg-error "is recursive" }
  22 !
  23 ! Test the two regressions.
  24 !
  25   fi (n) = n *one
  26   dshpfunc (arg)=-lambda/sigma*(arg/sigma)**(lambda-1)*exp(-(arg/sigma)**lambda)
  27 !
  28 ! References to each statement function.
  29 !
  30   write(6,*) st1 (1), fi (2), dshpfunc (1.0_8)
  31   END