re PR fortran/38432 (Add warning for loops which are never executed)

2009-03-28  Tobias Burnus  <burnus@net-b.de>

        PR fortran/38432
        * resolve.c (gfc_resolve_iterator): Add zero-loop warning.

2009-03-28  Tobias Burnus  <burnus@net-b.de>

        PR fortran/38432
        * gfortran.dg/do_check_5.f90: New test.
        * gfortran.dg/array_constructor_11.f90: Add dg-warning.
        * gfortran.dg/array_constructor_18.f90: Ditto.
        * gfortran.dg/array_constructor_22.f90: Ditto.
        * gfortran.dg/do_3.F90: Ditto.
        * gfortran.dg/do_1.f90: Ditto.

From-SVN: r145186