anchor.diff:                 func=[],                         %Current function
                  warn_format=0,                   %Warn format calls
   	       enabled_warnings=[],		%All enabled warnings (ordset).
  +               nowarn_bif_clash=[],             %All no warn bif clashes (ordset).
                  errors=[],                       %Current errors
                  warnings=[],                     %Current warnings
                  file = ""        :: string(),	%From last file attribute
  
positive.code: 
  %% bif_clashes(Forms, State0) -> State.
  
  bif_clashes(Forms, St) ->
      Nowarn = nowarn_function(nowarn_bif_clash, St#lint.compile),
      Clashes0 = [{Name,Arity} || {function,_L,Name,Arity,_Cs} <- Forms,
                                  erl_internal:bif(Name, Arity)],
      Clashes = ordsets:subtract(ordsets:from_list(Clashes0), Nowarn),
  
negative.code:     gb_sets:is_element({Func,Arity},NoAutoSet).
  %% Predicate to find out if a function specific bif-clash suppression (old deprecated) is present
  bif_clash_specifically_disabled(St,{F,A}) ->
      lists:member({F,A},St#lint.nowarn_bif_clash).
  
  %% Predicate to find out if an autoimported guard_bif is not overriden in some way
  %% Guard Bif without module name is disallowed if
  