anchor.diff:  	  {if_8c,
   	   <<"-if(?foo).\n"                     %Undefined symbol.
   	     "-endif.\n">>,
  -	   {errors,[{{1,6},epp,{undefined,foo,none}}],[]}}
  +	   {errors,[{{1,25},epp,{undefined,foo,none}}],[]}}
   
   	 ],
       [] = compile(Config, Cs),
  
positive.code: 
      Cks = [{otp_check_1,
              <<"\n-include_lib(\"epp_test.erl\").\n">>,
              [{error,{{2,2},epp,{depth,"include_lib"}}}]},
  
             {otp_check_2,
              <<"\n-include(\"epp_test.erl\").\n">>,
              [{error,{{2,2},epp,{depth,"include"}}}]}
             ],
      [] = check(Config, Cks),
  
  
negative.code: 
      {file_7702,[{abstract_code,{_,Forms}}]} = AC,
      Forms2 = unopaque_forms(Forms),
          [{attribute,{1,1},file,_},
           _,
           _,
           {function,_,t,0,
            [{clause,_,[],[],
              [{'receive',{14,25},
                [_,
                 {clause,{14,38},
                  [{var,{14,38},'M'}],
                  [],
                  [{_,_,_,
                    [{tuple,{14,38},
                      [{atom,{14,38},unexpected_message},
                       {var,{14,38},'M'},
                       {atom,{14,38},on_line},
                       {integer,{14,38},14},
                       {atom,{14,38},was_expecting},
                       {string,{14,38},"foo"}]}]}]}],
                {integer,{14,38},10000},
                [{call,{14,38},
                  {atom,{14,38},exit},
                  [{tuple,{14,38},
                    [{atom,{14,38},timeout},
                     {atom,{14,38},on_line},
                     {integer,{14,38},14},
                     {atom,{14,38},was_expecting},
                     {string,{14,38},"foo"}]}]}]}]}]},
           {eof,{14,43}}] = Forms2,
  
      file:delete(File),
      file:delete(BeamFile),
  