anchor.diff:      end.
   
   ref_opt_1(Config) ->
  -    ?line DataDir = ?config(data_dir, Config),
  -    ?line PrivDir = ?config(priv_dir, Config),
  +    DataDir = ?config(data_dir, Config),
  +    PrivDir = ?config(priv_dir, Config),
       Sources = filelib:wildcard(filename:join([DataDir,"ref_opt","*.{erl,S}"])),
  -    ?line test_lib:p_run(fun(Src) ->
  -				 do_ref_opt(Src, PrivDir)
  -			 end, Sources),
  +    test_lib:p_run(fun(Src) ->
  +			   do_ref_opt(Src, PrivDir)
  +		   end, Sources),
  +    cover_recv_instructions(),
       ok.
   
   do_ref_opt(Source, PrivDir) ->
  
positive.code: 		end] || {function,_,_,_,Is} <- Code],
      lists:append(L).
  
  export(Config) when is_list(Config) ->
      Ref = make_ref(),
      ?line self() ! {result,Ref,42},
  
negative.code: 					 {outdir,PrivDir}] ++
  					[from_asm || Ext =:= ".S" ]),
  	Base = filename:rootname(filename:basename(Source), Ext),
  	code:purge(list_to_atom(Base)),
  	BeamFile = filename:join(PrivDir, Base),
  	code:load_abs(BeamFile),
  	ok = Mod:Mod(),
  	{beam_file,Mod,_,_,_,Code} = beam_disasm:file(BeamFile),
  	case Base of
  