anchor.diff:      true = do_test_size(maps:from_list([{I,I}||I<-lists:seq(1,254)])) >= map_size_lower_bound(254),
       true = do_test_size(maps:from_list([{I,I}||I<-lists:seq(1,239)])) >= map_size_lower_bound(239),
   
  -    %% Test internal consistency of sizes, but without testing
  -    %% exact sizes.
       Const = id(42),
       AnotherConst = id(7),
   
       %% Fun environment size = 0 (the smallest fun possible)
       SimplestFun = fun() -> ok end,
  +    FunSz0 = 6,
       FunSz0 = do_test_size(SimplestFun),
   
       %% Fun environment size = 1
  
positive.code:     FunSz2 = FunSz1 + 1,
  
      FunSz1 = do_test_size(fun() -> ConsCell1 end) - do_test_size(ConsCell1),
  
      %% Test shared data structures.
      do_test_size([ConsCell1|ConsCell1],
  
negative.code: 
  id(I) ->
      I.
  
  mk_ext_pid({NodeName, Creation}, Number, Serial) ->
      erts_test_utils:mk_ext_pid({NodeName, Creation}, Number, Serial).
  
  mk_ext_port({NodeName, Creation}, Number) ->
      erts_test_utils:mk_ext_port({NodeName, Creation}, Number).
  
  mk_ext_ref({NodeName, Creation}, Numbers) ->
      erts_test_utils:mk_ext_ref({NodeName, Creation}, Numbers).
  