anchor.diff:  erl_value_test_() ->
       {inparallel,
        [{C, case O of
  -              'SecurityException' ->
  +              'SystemException' ->
                     ?_assertException(throw, {'SecurityException', _},
                                       erl_value(C));
                 'ClientError' ->
  
positive.code:           {"{1,2}", {1,2}},
            {"(fun() -> 1 + 2 end)()", 3},
            {"(fun() -> A end)()", 'ClientError'},
            {"os:cmd(\"pwd\")", 'SecurityException'},
            {"(fun() -> apply(filelib, ensure_dir, [\"pwd\"]) end)()",
             'SecurityException'},
            {"fun() -> os:cmd(\"pwd\") end", runtime}
           ]
       ]}.
  
negative.code:                                     erl_value(C));
                runtime ->
                    Fun = erl_value(C),
                    ?_assertException(throw, {'SystemException', _},
                                      Fun());
                _ ->
                    ?_assertEqual(O, erl_value(C))
  