anchor.diff:                -define(ASSERT, ?MODULE).
   
                 ?ASSERT().">>,
  -           [{error,{{4,16},epp,{undefined,'MODULE', none}}}]}],
  +           [{error,{4,epp,{undefined,'MODULE', none}}}]}],
       [] = check(Config, Ts),
       ok.
   
  
positive.code: 	  {if_8c,
  	   <<"-if(?foo).\n"                     %Undefined symbol.
  	     "-endif.\n">>,
  	   {errors,[{{1,6},epp,{undefined,foo,none}}],[]}}
  
  	 ],
      [] = compile(Config, Cs),
  
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),
  