re PR fortran/42936 (Result of passing NULL() as actual arg doesn't inherit characteristics from the corresponding dummy arg)

2010-02-03  Tobias Burnus  <burnus@net-b.de>

        PR fortran/42936
        * interface.c (compare_parameter): Disable rank-checking
        for NULL().

2010-02-03  Tobias Burnus  <burnus@net-b.de>

        PR fortran/42936
        * gfortran.dg/null_4.f90: New test.

From-SVN: r156461