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-rw-r--r--lib/stdlib/test/dummy_h.erl6
-rw-r--r--lib/stdlib/test/erl_lint_SUITE.erl63
-rw-r--r--lib/stdlib/test/ets_SUITE.erl20
-rw-r--r--lib/stdlib/test/gen_event_SUITE.erl46
-rw-r--r--lib/stdlib/test/gen_fsm_SUITE.erl46
-rw-r--r--lib/stdlib/test/gen_server_SUITE.erl73
-rw-r--r--lib/stdlib/test/gen_statem_SUITE.erl93
-rw-r--r--lib/stdlib/test/io_SUITE.erl59
8 files changed, 395 insertions, 11 deletions
diff --git a/lib/stdlib/test/dummy_h.erl b/lib/stdlib/test/dummy_h.erl
index 45ccfee240..7a9eb11f98 100644
--- a/lib/stdlib/test/dummy_h.erl
+++ b/lib/stdlib/test/dummy_h.erl
@@ -43,6 +43,9 @@ handle_event(hibernate, _State) ->
{ok,[],hibernate};
handle_event(wakeup, _State) ->
{ok,[]};
+handle_event({From, handle_event}, _State) ->
+ From ! handled_event,
+ {ok,[]};
handle_event(Event, Parent) ->
Parent ! {dummy_h, Event},
{ok, Parent}.
@@ -75,6 +78,9 @@ handle_info(wake, _State) ->
{ok, []};
handle_info(gnurf, _State) ->
{ok, []};
+handle_info({From, handle_info}, _State) ->
+ From ! handled_info,
+ {ok, []};
handle_info(Info, Parent) ->
Parent ! {dummy_h, Info},
{ok, Parent}.
diff --git a/lib/stdlib/test/erl_lint_SUITE.erl b/lib/stdlib/test/erl_lint_SUITE.erl
index 03cad2c093..02524679fa 100644
--- a/lib/stdlib/test/erl_lint_SUITE.erl
+++ b/lib/stdlib/test/erl_lint_SUITE.erl
@@ -65,7 +65,8 @@
maps/1,maps_type/1,maps_parallel_match/1,
otp_11851/1,otp_11879/1,otp_13230/1,
record_errors/1, otp_11879_cont/1,
- non_latin1_module/1, otp_14323/1]).
+ non_latin1_module/1, otp_14323/1,
+ get_stacktrace/1]).
suite() ->
[{ct_hooks,[ts_install_cth]},
@@ -85,7 +86,8 @@ all() ->
too_many_arguments, basic_errors, bin_syntax_errors, predef,
maps, maps_type, maps_parallel_match,
otp_11851, otp_11879, otp_13230,
- record_errors, otp_11879_cont, non_latin1_module, otp_14323].
+ record_errors, otp_11879_cont, non_latin1_module, otp_14323,
+ get_stacktrace].
groups() ->
[{unused_vars_warn, [],
@@ -3980,6 +3982,63 @@ otp_14323(Config) ->
[] = run(Config, Ts),
ok.
+get_stacktrace(Config) ->
+ Ts = [{old_catch,
+ <<"t1() ->
+ catch error(foo),
+ erlang:get_stacktrace().
+ ">>,
+ [],
+ {warnings,[{3,erl_lint,{get_stacktrace,after_old_catch}}]}},
+ {nowarn_get_stacktrace,
+ <<"t1() ->
+ catch error(foo),
+ erlang:get_stacktrace().
+ ">>,
+ [nowarn_get_stacktrace],
+ []},
+ {try_catch,
+ <<"t1(X) ->
+ try abs(X) of
+ _ ->
+ erlang:get_stacktrace()
+ catch
+ _:_ -> ok
+ end.
+
+ t2() ->
+ try error(foo)
+ catch _:_ -> ok
+ end,
+ erlang:get_stacktrace().
+
+ t3() ->
+ try error(foo)
+ catch _:_ ->
+ try error(bar)
+ catch _:_ ->
+ ok
+ end,
+ erlang:get_stacktrace()
+ end.
+
+ no_warning(X) ->
+ try
+ abs(X)
+ catch
+ _:_ ->
+ erlang:get_stacktrace()
+ end.
+ ">>,
+ [],
+ {warnings,[{4,erl_lint,{get_stacktrace,wrong_part_of_try}},
+ {13,erl_lint,{get_stacktrace,after_try}},
+ {22,erl_lint,{get_stacktrace,after_try}}]}}],
+
+ run(Config, Ts),
+ ok.
+
+
run(Config, Tests) ->
F = fun({N,P,Ws,E}, BadL) ->
case catch run_test(Config, P, Ws) of
diff --git a/lib/stdlib/test/ets_SUITE.erl b/lib/stdlib/test/ets_SUITE.erl
index 4c2f6cfe9e..05451a83fb 100644
--- a/lib/stdlib/test/ets_SUITE.erl
+++ b/lib/stdlib/test/ets_SUITE.erl
@@ -1349,6 +1349,26 @@ t_select_replace(Config) when is_list(Config) ->
NeqPairs(X,Y)) || X <- Terms, Y <- Terms],
+ %% Wrap entire tuple with 'const'
+ [[begin
+ Old = {Key, 1, 2},
+ ets:insert(T2, Old),
+ 1 = ets:select_replace(T2, [{Old, [], [{const, New}]}]),
+ [New] = ets:lookup(T2, Key),
+ ets:delete(T2, Key)
+ end || New <- [{Key, 1, 2}, {Key, 3, 4}, {Key, 1}, {Key, 1, 2, 3}, {Key}]
+ ]
+ || Key <- [{1, tuple}, {nested, {tuple, {a,b}}} | Terms]],
+
+ %% 'const' wrap does not work with maps or variables in keys
+ [[begin
+ Old = {Key, 1, 2},
+ {'EXIT',{badarg,_}} = (catch ets:select_replace(T2, [{Old, [], [{const, New}]}]))
+ end || New <- [{Key, 1, 2}, {Key, 3, 4}, {Key, 1}, {Key, 1, 2, 3}, {Key}]
+ ]
+ || Key <- [#{a => 1}, {nested, #{a => 1}}, '$1']],
+
+
ets:delete(T2),
verify_etsmem(EtsMem).
diff --git a/lib/stdlib/test/gen_event_SUITE.erl b/lib/stdlib/test/gen_event_SUITE.erl
index 749920f843..880b10117c 100644
--- a/lib/stdlib/test/gen_event_SUITE.erl
+++ b/lib/stdlib/test/gen_event_SUITE.erl
@@ -26,7 +26,7 @@
end_per_testcase/2]).
-export([start/1, add_handler/1, add_sup_handler/1,
delete_handler/1, swap_handler/1, swap_sup_handler/1,
- notify/1, sync_notify/1, call/1, info/1, hibernate/1,
+ notify/1, sync_notify/1, call/1, info/1, hibernate/1, auto_hibernate/1,
call_format_status/1, call_format_status_anon/1,
error_format_status/1, get_state/1, replace_state/1,
start_opt/1,
@@ -37,7 +37,7 @@
suite() -> [{ct_hooks,[ts_install_cth]}].
all() ->
- [start, {group, test_all}, hibernate,
+ [start, {group, test_all}, hibernate, auto_hibernate,
call_format_status, call_format_status_anon, error_format_status,
get_state, replace_state,
start_opt, {group, undef_callbacks}, undef_in_terminate].
@@ -306,6 +306,48 @@ hibernate(Config) when is_list(Config) ->
ok.
+auto_hibernate(Config) when is_list(Config) ->
+ HibernateAfterTimeout = 100,
+ State = {auto_hibernate_state},
+ {ok,Pid} = gen_event:start({local, auto_hibernate_handler}, [{hibernate_after, HibernateAfterTimeout}]),
+ %% After init test
+ is_not_in_erlang_hibernate(Pid),
+ timer:sleep(HibernateAfterTimeout),
+ is_in_erlang_hibernate(Pid),
+ ok = gen_event:add_handler(auto_hibernate_handler, dummy_h, [State]),
+ %% Get state test
+ [{dummy_h,false,State}] = sys:get_state(Pid),
+ is_in_erlang_hibernate(Pid),
+ %% Call test
+ {ok, hejhopp} = gen_event:call(auto_hibernate_handler, dummy_h, hejsan),
+ is_not_in_erlang_hibernate(Pid),
+ timer:sleep(HibernateAfterTimeout),
+ is_in_erlang_hibernate(Pid),
+ %% Event test
+ ok = gen_event:notify(auto_hibernate_handler, {self(), handle_event}),
+ receive
+ handled_event ->
+ ok
+ after 1000 ->
+ ct:fail(event)
+ end,
+ is_not_in_erlang_hibernate(Pid),
+ timer:sleep(HibernateAfterTimeout),
+ is_in_erlang_hibernate(Pid),
+ %% Info test
+ Pid ! {self(), handle_info},
+ receive
+ handled_info ->
+ ok
+ after 1000 ->
+ ct:fail(info)
+ end,
+ is_not_in_erlang_hibernate(Pid),
+ timer:sleep(HibernateAfterTimeout),
+ is_in_erlang_hibernate(Pid),
+ ok = gen_event:stop(auto_hibernate_handler),
+ ok.
+
is_in_erlang_hibernate(Pid) ->
receive after 1 -> ok end,
is_in_erlang_hibernate_1(200, Pid).
diff --git a/lib/stdlib/test/gen_fsm_SUITE.erl b/lib/stdlib/test/gen_fsm_SUITE.erl
index 7f98526d35..86cf58566b 100644
--- a/lib/stdlib/test/gen_fsm_SUITE.erl
+++ b/lib/stdlib/test/gen_fsm_SUITE.erl
@@ -44,7 +44,7 @@
-export([undef_in_handle_info/1, undef_in_terminate/1]).
--export([hibernate/1,hiber_idle/3,hiber_wakeup/3,hiber_idle/2,hiber_wakeup/2]).
+-export([hibernate/1,auto_hibernate/1,hiber_idle/3,hiber_wakeup/3,hiber_idle/2,hiber_wakeup/2]).
-export([enter_loop/1]).
@@ -68,7 +68,7 @@ suite() -> [{ct_hooks,[ts_install_cth]}].
all() ->
[{group, start}, {group, abnormal}, shutdown,
- {group, sys}, hibernate, enter_loop, {group, undef_callbacks},
+ {group, sys}, hibernate, auto_hibernate, enter_loop, {group, undef_callbacks},
undef_in_handle_info, undef_in_terminate].
groups() ->
@@ -700,6 +700,43 @@ hibernate(Config) when is_list(Config) ->
process_flag(trap_exit, OldFl),
ok.
+%% Auto hibernation
+auto_hibernate(Config) when is_list(Config) ->
+ OldFl = process_flag(trap_exit, true),
+ HibernateAfterTimeout = 100,
+ State = {auto_hibernate_state},
+ {ok, Pid} = gen_fsm:start_link({local, my_test_name_auto_hibernate}, ?MODULE, {state_data, State}, [{hibernate_after, HibernateAfterTimeout}]),
+ %% After init test
+ is_not_in_erlang_hibernate(Pid),
+ timer:sleep(HibernateAfterTimeout),
+ is_in_erlang_hibernate(Pid),
+ %% Get state test
+ {_, State} = sys:get_state(my_test_name_auto_hibernate),
+ is_in_erlang_hibernate(Pid),
+ %% Sync send event test
+ 'alive!' = gen_fsm:sync_send_event(Pid,'alive?'),
+ is_not_in_erlang_hibernate(Pid),
+ timer:sleep(HibernateAfterTimeout),
+ is_in_erlang_hibernate(Pid),
+ %% Send event test
+ ok = gen_fsm:send_all_state_event(Pid,{'alive?', self()}),
+ wfor(yes),
+ is_not_in_erlang_hibernate(Pid),
+ timer:sleep(HibernateAfterTimeout),
+ is_in_erlang_hibernate(Pid),
+ %% Info test
+ Pid ! {self(), handle_info},
+ wfor({Pid, handled_info}),
+ is_not_in_erlang_hibernate(Pid),
+ timer:sleep(HibernateAfterTimeout),
+ is_in_erlang_hibernate(Pid),
+ stop_it(Pid),
+ receive
+ {'EXIT',Pid,normal} -> ok
+ end,
+ process_flag(trap_exit, OldFl),
+ ok.
+
is_in_erlang_hibernate(Pid) ->
receive after 1 -> ok end,
is_in_erlang_hibernate_1(200, Pid).
@@ -1151,6 +1188,8 @@ idle(badreturn, _From, _Data) ->
idle({timeout,Time}, From, _Data) ->
gen_fsm:send_event_after(Time, {timeout,Time}),
{next_state, timeout, From};
+idle('alive?', _From, Data) ->
+ {reply, 'alive!', idle, Data};
idle(_, _From, Data) ->
{reply, 'eh?', idle, Data}.
@@ -1226,6 +1265,9 @@ handle_info(hibernate_later, _SName, _State) ->
handle_info({call_undef_fun, {Mod, Fun}}, State, Data) ->
Mod:Fun(),
{next_state, State, Data};
+handle_info({From, handle_info}, SName, State) ->
+ From ! {self(), handled_info},
+ {next_state, SName, State};
handle_info(Info, _State, Data) ->
{stop, {unexpected,Info}, Data}.
diff --git a/lib/stdlib/test/gen_server_SUITE.erl b/lib/stdlib/test/gen_server_SUITE.erl
index 6f72034b09..7e3c71715e 100644
--- a/lib/stdlib/test/gen_server_SUITE.erl
+++ b/lib/stdlib/test/gen_server_SUITE.erl
@@ -32,7 +32,7 @@
call_remote_n1/1, call_remote_n2/1, call_remote_n3/1, spec_init/1,
spec_init_local_registered_parent/1,
spec_init_global_registered_parent/1,
- otp_5854/1, hibernate/1, otp_7669/1, call_format_status/1,
+ otp_5854/1, hibernate/1, auto_hibernate/1, otp_7669/1, call_format_status/1,
error_format_status/1, terminate_crash_format/1,
get_state/1, replace_state/1, call_with_huge_message_queue/1,
undef_handle_call/1, undef_handle_cast/1, undef_handle_info/1,
@@ -65,7 +65,7 @@ all() ->
call_remote3, call_remote_n1, call_remote_n2,
call_remote_n3, spec_init,
spec_init_local_registered_parent,
- spec_init_global_registered_parent, otp_5854, hibernate,
+ spec_init_global_registered_parent, otp_5854, hibernate, auto_hibernate,
otp_7669,
call_format_status, error_format_status, terminate_crash_format,
get_state, replace_state,
@@ -730,6 +730,58 @@ hibernate(Config) when is_list(Config) ->
process_flag(trap_exit, OldFl),
ok.
+auto_hibernate(Config) when is_list(Config) ->
+ OldFl = process_flag(trap_exit, true),
+ HibernateAfterTimeout = 100,
+ State = {auto_hibernate_state},
+ {ok, Pid} =
+ gen_server:start_link({local, my_test_name_auto_hibernate},
+ gen_server_SUITE, {state,State}, [{hibernate_after, HibernateAfterTimeout}]),
+ %% After init test
+ is_not_in_erlang_hibernate(Pid),
+ timer:sleep(HibernateAfterTimeout),
+ is_in_erlang_hibernate(Pid),
+ %% Get state test
+ State = sys:get_state(my_test_name_auto_hibernate),
+ is_in_erlang_hibernate(Pid),
+ %% Call test
+ ok = gen_server:call(my_test_name_auto_hibernate, started_p),
+ is_not_in_erlang_hibernate(Pid),
+ timer:sleep(HibernateAfterTimeout),
+ is_in_erlang_hibernate(Pid),
+ %% Cast test
+ ok = gen_server:cast(my_test_name_auto_hibernate, {self(),handle_cast}),
+ receive
+ {Pid, handled_cast} ->
+ ok
+ after 1000 ->
+ ct:fail(cast)
+ end,
+ is_not_in_erlang_hibernate(Pid),
+ timer:sleep(HibernateAfterTimeout),
+ is_in_erlang_hibernate(Pid),
+ %% Info test
+ Pid ! {self(),handle_info},
+ receive
+ {Pid, handled_info} ->
+ ok
+ after 1000 ->
+ ct:fail(info)
+ end,
+ is_not_in_erlang_hibernate(Pid),
+ timer:sleep(HibernateAfterTimeout),
+ is_in_erlang_hibernate(Pid),
+
+ ok = gen_server:call(my_test_name_auto_hibernate, stop),
+ receive
+ {'EXIT', Pid, stopped} ->
+ ok
+ after 5000 ->
+ ct:fail(gen_server_did_not_die)
+ end,
+ process_flag(trap_exit, OldFl),
+ ok.
+
is_in_erlang_hibernate(Pid) ->
receive after 1 -> ok end,
is_in_erlang_hibernate_1(200, Pid).
@@ -747,6 +799,23 @@ is_in_erlang_hibernate_1(N, Pid) ->
is_in_erlang_hibernate_1(N-1, Pid)
end.
+is_not_in_erlang_hibernate(Pid) ->
+ receive after 1 -> ok end,
+ is_not_in_erlang_hibernate_1(200, Pid).
+
+is_not_in_erlang_hibernate_1(0, Pid) ->
+ io:format("~p\n", [erlang:process_info(Pid, current_function)]),
+ ct:fail(not_in_erlang_hibernate_3);
+is_not_in_erlang_hibernate_1(N, Pid) ->
+ {current_function,MFA} = erlang:process_info(Pid, current_function),
+ case MFA of
+ {erlang,hibernate,3} ->
+ receive after 10 -> ok end,
+ is_not_in_erlang_hibernate_1(N-1, Pid);
+ _ ->
+ ok
+ end.
+
%% --------------------------------------
%% Test gen_server:abcast and handle_cast.
%% Test all different return values from
diff --git a/lib/stdlib/test/gen_statem_SUITE.erl b/lib/stdlib/test/gen_statem_SUITE.erl
index 05934b3953..5b9daecfd3 100644
--- a/lib/stdlib/test/gen_statem_SUITE.erl
+++ b/lib/stdlib/test/gen_statem_SUITE.erl
@@ -40,7 +40,7 @@ all() ->
shutdown, stop_and_reply, state_enter, event_order,
state_timeout, event_types, generic_timers, code_change,
{group, sys},
- hibernate, enter_loop, {group, undef_callbacks},
+ hibernate, auto_hibernate, enter_loop, {group, undef_callbacks},
undef_in_terminate].
groups() ->
@@ -1284,6 +1284,84 @@ hibernate(Config) ->
end,
ok = verify_empty_msgq().
+%% Auto-hibernation timeout
+auto_hibernate(Config) ->
+ OldFl = process_flag(trap_exit, true),
+ HibernateAfterTimeout = 100,
+
+ {ok,Pid} =
+ gen_statem:start_link(
+ ?MODULE, start_arg(Config, []), [{hibernate_after, HibernateAfterTimeout}]),
+ %% After init test
+ is_not_in_erlang_hibernate(Pid),
+ timer:sleep(HibernateAfterTimeout),
+ is_in_erlang_hibernate(Pid),
+ %% After info test
+ Pid ! {hping, self()},
+ receive
+ {Pid, hpong} ->
+ ok
+ after 1000 ->
+ ct:fail(info)
+ end,
+ is_not_in_erlang_hibernate(Pid),
+ timer:sleep(HibernateAfterTimeout),
+ is_in_erlang_hibernate(Pid),
+ %% After cast test
+ ok = gen_statem:cast(Pid, {hping, self()}),
+ receive
+ {Pid, hpong} ->
+ ok
+ after 1000 ->
+ ct:fail(cast)
+ end,
+ is_not_in_erlang_hibernate(Pid),
+ timer:sleep(HibernateAfterTimeout),
+ is_in_erlang_hibernate(Pid),
+ %% After call test
+ hpong = gen_statem:call(Pid, hping),
+ is_not_in_erlang_hibernate(Pid),
+ timer:sleep(HibernateAfterTimeout),
+ is_in_erlang_hibernate(Pid),
+ %% Timer test 1
+ TimerTimeout1 = 50,
+ ok = gen_statem:call(Pid, {arm_htimer, self(), TimerTimeout1}),
+ is_not_in_erlang_hibernate(Pid),
+ timer:sleep(TimerTimeout1),
+ is_not_in_erlang_hibernate(Pid),
+ receive
+ {Pid, htimer_armed} ->
+ ok
+ after 1000 ->
+ ct:fail(timer1)
+ end,
+ is_not_in_erlang_hibernate(Pid),
+ timer:sleep(HibernateAfterTimeout),
+ is_in_erlang_hibernate(Pid),
+ %% Timer test 2
+ TimerTimeout2 = 150,
+ ok = gen_statem:call(Pid, {arm_htimer, self(), TimerTimeout2}),
+ is_not_in_erlang_hibernate(Pid),
+ timer:sleep(HibernateAfterTimeout),
+ is_in_erlang_hibernate(Pid),
+ receive
+ {Pid, htimer_armed} ->
+ ok
+ after 1000 ->
+ ct:fail(timer2)
+ end,
+ is_not_in_erlang_hibernate(Pid),
+ timer:sleep(HibernateAfterTimeout),
+ is_in_erlang_hibernate(Pid),
+ stop_it(Pid),
+ process_flag(trap_exit, OldFl),
+ receive
+ {'EXIT',Pid,normal} -> ok
+ after 5000 ->
+ ct:fail(gen_statem_did_not_die)
+ end,
+ ok = verify_empty_msgq().
+
is_in_erlang_hibernate(Pid) ->
receive after 1 -> ok end,
is_in_erlang_hibernate_1(200, Pid).
@@ -1704,6 +1782,19 @@ terminate(_Reason, _State, _Data) ->
%% State functions
+idle(info, {hping,Pid}, _Data) ->
+ Pid ! {self(), hpong},
+ keep_state_and_data;
+idle(cast, {hping,Pid}, Data) ->
+ Pid ! {self(), hpong},
+ {keep_state, Data};
+idle({call, From}, hping, _Data) ->
+ {keep_state_and_data, [{reply, From, hpong}]};
+idle({call, From}, {arm_htimer, Pid, Timeout}, _Data) ->
+ {keep_state_and_data, [{reply, From, ok}, {timeout, Timeout, {arm_htimer, Pid}}]};
+idle(timeout, {arm_htimer, Pid}, _Data) ->
+ Pid ! {self(), htimer_armed},
+ keep_state_and_data;
idle(cast, {connect,Pid}, Data) ->
Pid ! accept,
{next_state,wfor_conf,Data,infinity}; % NoOp timeout just to test API
diff --git a/lib/stdlib/test/io_SUITE.erl b/lib/stdlib/test/io_SUITE.erl
index ef3f0be5d7..e2c73371cd 100644
--- a/lib/stdlib/test/io_SUITE.erl
+++ b/lib/stdlib/test/io_SUITE.erl
@@ -31,7 +31,7 @@
otp_10836/1, io_lib_width_too_small/1,
io_with_huge_message_queue/1, format_string/1,
maps/1, coverage/1, otp_14178_unicode_atoms/1, otp_14175/1,
- otp_14285/1]).
+ otp_14285/1, limit_term/1]).
-export([pretty/2]).
@@ -63,7 +63,7 @@ all() ->
io_lib_print_binary_depth_one, otp_10302, otp_10755, otp_10836,
io_lib_width_too_small, io_with_huge_message_queue,
format_string, maps, coverage, otp_14178_unicode_atoms, otp_14175,
- otp_14285].
+ otp_14285, limit_term].
%% Error cases for output.
error_1(Config) when is_list(Config) ->
@@ -2373,3 +2373,58 @@ otp_14285(_Config) ->
latin1_fmt(Fmt, Args) ->
L = fmt(Fmt, Args),
true = lists:all(fun is_latin1/1, L).
+
+limit_term(_Config) ->
+ {_, 2} = limt([a,b,c], 2),
+ {_, 2} = limt([a,b,c], 3),
+ {_, 2} = limt([a,b|c], 2),
+ {_, 2} = limt([a,b|c], 3),
+ {_, 2} = limt({a,b,c,[d,e]}, 2),
+ {_, 2} = limt({a,b,c,[d,e]}, 3),
+ {_, 2} = limt({a,b,c,[d,e]}, 4),
+ {_, 1} = limt(<<"foo">>, 18),
+ ok = blimt(<<"123456789012345678901234567890">>),
+ {_, 1} = limt(<<7:3>>, 2),
+ {_, 1} = limt(<<7:21>>, 2),
+ {_, 1} = limt([], 2),
+ {_, 1} = limt({}, 2),
+ {_, 1} = limt(#{}, 2),
+ {_, 1} = limt(#{[] => {}}, 2),
+ {_, 1} = limt(#{[] => {}}, 3),
+ T = #{[] => {},[a] => [b]},
+ {_, 1} = limt(T, 2),
+ {_, 1} = limt(T, 3),
+ {_, 1} = limt(T, 4),
+ ok.
+
+blimt(Binary) ->
+ blimt(Binary, byte_size(Binary)).
+
+blimt(_B, 1) -> ok;
+blimt(B, D) ->
+ {_, 1} = limt(B, D),
+ blimt(B, D - 1).
+
+limt(Term, Depth) when is_integer(Depth) ->
+ T1 = io_lib:limit_term(Term, Depth),
+ S = form(Term, Depth),
+ S1 = form(T1, Depth),
+ OK1 = S1 =:= S,
+
+ T2 = io_lib:limit_term(Term, Depth+1),
+ S2 = form(T2, Depth),
+ OK2 = S2 =:= S,
+
+ T3 = io_lib:limit_term(Term, Depth-1),
+ S3 = form(T3, Depth),
+ OK3 = S3 =/= S,
+
+ R = case {OK1, OK2, OK3} of
+ {true, true, true} -> 2;
+ {true, true, false} -> 1;
+ _ -> 0
+ end,
+ {{S, S1, S2}, R}.
+
+form(Term, Depth) ->
+ lists:flatten(io_lib:format("~W", [Term, Depth])).
generated by cgit v1.2.3 (git 2.25.1) at 2024-09-04 07:33:25 +0000