anchor.diff:  	t_update_map_expressions,
   	t_update_assoc, t_update_assoc_large,
           t_update_exact, t_update_exact_large,
  -	t_guard_bifs, t_guard_sequence, t_guard_update,
  -	t_guard_receive,t_guard_fun, t_list_comprehension,
  +	t_guard_bifs,
  +        t_guard_sequence, t_guard_sequence_large,
  +        t_guard_update, t_guard_update_large,
  +	t_guard_receive, t_guard_receive_large,
  +        t_guard_fun, t_list_comprehension,
   	t_map_sort_literals,
   	t_build_and_match_aliasing,
   
  
positive.code:     %% cleanup
      done = call(Pid, done),
      ok.
  
  call(Pid, M) ->
      Pid ! {self(), M}, receive {Pid, Res} -> Res end.
  
negative.code: 
  t_list_comprehension(Config) when is_list(Config) ->
      [#{k:=1},#{k:=2},#{k:=3}] = [#{k=>I} || I <- [1,2,3]],
      Ls = id([#{<<2:301>> => I, "wat" => I + 1} || I <- [1,2,3]]),
      [#{<<2:301>>:=1,"wat":=2},#{<<2:301>>:=2,"wat":=3},#{<<2:301>>:=3,"wat":=4}] = Ls,
      [{1,2},{2,3},{3,4}] = id([{I2,I1} || #{"wat" := I1, <<2:301>> := I2} <- Ls]),
  
      Ks = lists:seq($a,$z),
      Ms = [#{[K1,K2]=>{K1,K2}} || K1 <- Ks, K2 <- Ks],
      [#{"aa" := {$a,$a}},#{"ab":={$a,$b}}|_] = Ms,
      [#{"zz" := {$z,$z}},#{"zy":={$z,$y}}|_] = lists:reverse(Ms),
      ok.
  
  t_guard_fun(Config) when is_list(Config) ->
  