anchor.diff:  
   %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
   
  +large_write(Config) when is_list(Config) ->
  +    run_large_file_test(Config,
  +			fun(Name) -> do_large_write(Name) end,
  +			"_large_write").
  +
  +do_large_write(Name) ->
  +    case erlang:system_info(wordsize) of
  +	4 ->
  +	    {skip,"Needs a 64-bit emulator"};
  +	8 ->
  +	    Size = 4*1024*1024*1024+1,
  +	    Bin = <<0:Size/unit:8>>,
  +	    ok = file:write_file(Name, Bin),
  +	    {ok,#file_info{size=Size}} = file:read_file_info(Name),
  +	    ok
  +    end.
  +
  +%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  +
   
   
   response_analysis(Module, Function, Arguments) ->
  
positive.code: 
  -export([altname/1]).
  
  -export([large_file/1]).
  
  -export([read_line_1/1, read_line_2/1, read_line_3/1,read_line_4/1]).
  
  
negative.code:      {group, compression}, {group, links}, copy,
       delayed_write, read_ahead, segment_read, segment_write,
       ipread, pid2name, interleaved_read_write, otp_5814,
       large_file, large_write, read_line_1, read_line_2, read_line_3,
       read_line_4, standard_io].
  
  groups() -> 
  