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-rw-r--r--lib/stdlib/doc/src/gen_statem.xml2
-rw-r--r--lib/stdlib/src/erl_parse.yrl3
-rw-r--r--lib/stdlib/src/error_logger_file_h.erl12
-rw-r--r--lib/stdlib/src/error_logger_tty_h.erl14
-rw-r--r--lib/stdlib/src/gen_server.erl187
-rw-r--r--lib/stdlib/src/gen_statem.erl8
-rw-r--r--lib/stdlib/src/io_lib.erl115
-rw-r--r--lib/stdlib/src/proc_lib.erl107
-rw-r--r--lib/stdlib/test/erl_lint_SUITE.erl6
-rw-r--r--lib/stdlib/test/gen_server_SUITE.erl2
-rw-r--r--lib/stdlib/test/io_SUITE.erl59
11 files changed, 375 insertions, 140 deletions
diff --git a/lib/stdlib/doc/src/gen_statem.xml b/lib/stdlib/doc/src/gen_statem.xml
index 1aac88c308..ad7f2f2e95 100644
--- a/lib/stdlib/doc/src/gen_statem.xml
+++ b/lib/stdlib/doc/src/gen_statem.xml
@@ -346,7 +346,7 @@ ok
<p>
To compare styles, here follows the same example using
<seealso marker="#type-callback_mode"><em>callback mode</em></seealso>
- <c>state_functions</c>, or rather the code to replace
+ <c>handle_event_function</c>, or rather the code to replace
after function <c>init/1</c> of the <c>pushbutton.erl</c>
example file above:
</p>
diff --git a/lib/stdlib/src/erl_parse.yrl b/lib/stdlib/src/erl_parse.yrl
index 2dcddeb8c2..733932e711 100644
--- a/lib/stdlib/src/erl_parse.yrl
+++ b/lib/stdlib/src/erl_parse.yrl
@@ -1052,6 +1052,9 @@ build_typed_attribute({atom,Aa,record},
build_typed_attribute({atom,Aa,Attr},
{type_def, {call,_,{atom,_,TypeName},Args}, Type})
when Attr =:= 'type' ; Attr =:= 'opaque' ->
+ lists:foreach(fun({var, A, '_'}) -> ret_err(A, "bad type variable");
+ (_) -> ok
+ end, Args),
case lists:all(fun({var, _, _}) -> true;
(_) -> false
end, Args) of
diff --git a/lib/stdlib/src/error_logger_file_h.erl b/lib/stdlib/src/error_logger_file_h.erl
index 0b262de3ab..76f89841b9 100644
--- a/lib/stdlib/src/error_logger_file_h.erl
+++ b/lib/stdlib/src/error_logger_file_h.erl
@@ -1,7 +1,7 @@
%%
%% %CopyrightBegin%
%%
-%% Copyright Ericsson AB 1996-2016. All Rights Reserved.
+%% Copyright Ericsson AB 1996-2017. All Rights Reserved.
%%
%% Licensed under the Apache License, Version 2.0 (the "License");
%% you may not use this file except in compliance with the License.
@@ -57,7 +57,7 @@ init(File, PrevHandler) ->
process_flag(trap_exit, true),
case file:open(File, [write]) of
{ok,Fd} ->
- Depth = get_depth(),
+ Depth = error_logger:get_format_depth(),
State = #st{fd=Fd,filename=File,prev_handler=PrevHandler,
depth=Depth},
{ok, State};
@@ -65,14 +65,6 @@ init(File, PrevHandler) ->
Error
end.
-get_depth() ->
- case application:get_env(kernel, error_logger_format_depth) of
- {ok, Depth} when is_integer(Depth) ->
- max(10, Depth);
- undefined ->
- unlimited
- end.
-
handle_event({_Type, GL, _Msg}, State) when node(GL) =/= node() ->
{ok, State};
handle_event(Event, State) ->
diff --git a/lib/stdlib/src/error_logger_tty_h.erl b/lib/stdlib/src/error_logger_tty_h.erl
index 2f2fd65252..8f0d7b0362 100644
--- a/lib/stdlib/src/error_logger_tty_h.erl
+++ b/lib/stdlib/src/error_logger_tty_h.erl
@@ -1,7 +1,7 @@
%%
%% %CopyrightBegin%
%%
-%% Copyright Ericsson AB 1996-2016. All Rights Reserved.
+%% Copyright Ericsson AB 1996-2017. All Rights Reserved.
%%
%% Licensed under the Apache License, Version 2.0 (the "License");
%% you may not use this file except in compliance with the License.
@@ -44,7 +44,7 @@
%% This one is used when we takeover from the simple error_logger.
init({[], {error_logger, Buf}}) ->
User = set_group_leader(),
- Depth = get_depth(),
+ Depth = error_logger:get_format_depth(),
State = #st{user=User,prev_handler=error_logger,depth=Depth},
write_events(State, Buf),
{ok, State};
@@ -56,17 +56,9 @@ init({[], {error_logger_tty_h, PrevHandler}}) ->
%% This one is used when we are started directly.
init([]) ->
User = set_group_leader(),
- Depth = get_depth(),
+ Depth = error_logger:get_format_depth(),
{ok, #st{user=User,prev_handler=[],depth=Depth}}.
-get_depth() ->
- case application:get_env(kernel, error_logger_format_depth) of
- {ok, Depth} when is_integer(Depth) ->
- max(10, Depth);
- undefined ->
- unlimited
- end.
-
handle_event({_Type, GL, _Msg}, State) when node(GL) =/= node() ->
{ok, State};
handle_event(Event, State) ->
diff --git a/lib/stdlib/src/gen_server.erl b/lib/stdlib/src/gen_server.erl
index ba0a7ae8e5..a3d53efd0d 100644
--- a/lib/stdlib/src/gen_server.erl
+++ b/lib/stdlib/src/gen_server.erl
@@ -107,7 +107,9 @@
%% Internal exports
-export([init_it/6]).
--import(error_logger, [format/2]).
+-define(
+ STACKTRACE(),
+ try throw(ok) catch _ -> erlang:get_stacktrace() end).
%%%=========================================================================
%%% API
@@ -326,15 +328,16 @@ init_it(Starter, self, Name, Mod, Args, Options) ->
init_it(Starter, Parent, Name0, Mod, Args, Options) ->
Name = gen:name(Name0),
Debug = gen:debug_options(Name, Options),
- HibernateAfterTimeout = gen:hibernate_after(Options),
- case catch Mod:init(Args) of
- {ok, State} ->
+ HibernateAfterTimeout = gen:hibernate_after(Options),
+
+ case init_it(Mod, Args) of
+ {ok, {ok, State}} ->
proc_lib:init_ack(Starter, {ok, self()}),
loop(Parent, Name, State, Mod, infinity, HibernateAfterTimeout, Debug);
- {ok, State, Timeout} ->
+ {ok, {ok, State, Timeout}} ->
proc_lib:init_ack(Starter, {ok, self()}),
loop(Parent, Name, State, Mod, Timeout, HibernateAfterTimeout, Debug);
- {stop, Reason} ->
+ {ok, {stop, Reason}} ->
%% For consistency, we must make sure that the
%% registered name (if any) is unregistered before
%% the parent process is notified about the failure.
@@ -344,18 +347,25 @@ init_it(Starter, Parent, Name0, Mod, Args, Options) ->
gen:unregister_name(Name0),
proc_lib:init_ack(Starter, {error, Reason}),
exit(Reason);
- ignore ->
+ {ok, ignore} ->
gen:unregister_name(Name0),
proc_lib:init_ack(Starter, ignore),
exit(normal);
- {'EXIT', Reason} ->
- gen:unregister_name(Name0),
- proc_lib:init_ack(Starter, {error, Reason}),
- exit(Reason);
- Else ->
+ {ok, Else} ->
Error = {bad_return_value, Else},
proc_lib:init_ack(Starter, {error, Error}),
- exit(Error)
+ exit(Error);
+ {'EXIT', Class, Reason, Stacktrace} ->
+ gen:unregister_name(Name0),
+ proc_lib:init_ack(Starter, {error, terminate_reason(Class, Reason, Stacktrace)}),
+ erlang:raise(Class, Reason, Stacktrace)
+ end.
+init_it(Mod, Args) ->
+ try
+ {ok, Mod:init(Args)}
+ catch
+ throw:R -> {ok, R};
+ Class:R -> {'EXIT', Class, R, erlang:get_stacktrace()}
end.
%%%========================================================================
@@ -397,7 +407,7 @@ decode_msg(Msg, Parent, Name, State, Mod, Time, HibernateAfterTimeout, Debug, Hi
sys:handle_system_msg(Req, From, Parent, ?MODULE, Debug,
[Name, State, Mod, Time, HibernateAfterTimeout], Hib);
{'EXIT', Parent, Reason} ->
- terminate(Reason, Name, undefined, Msg, Mod, State, Debug);
+ terminate(Reason, ?STACKTRACE(), Name, undefined, Msg, Mod, State, Debug);
_Msg when Debug =:= [] ->
handle_msg(Msg, Parent, Name, State, Mod, HibernateAfterTimeout);
_Msg ->
@@ -589,17 +599,11 @@ start_monitor(Node, Name) when is_atom(Node), is_atom(Name) ->
%% ---------------------------------------------------
%% Helper functions for try-catch of callbacks.
%% Returns the return value of the callback, or
-%% {'EXIT', ExitReason, ReportReason} (if an exception occurs)
-%%
-%% ExitReason is the reason that shall be used when the process
-%% terminates.
+%% {'EXIT', Class, Reason, Stack} (if an exception occurs)
%%
-%% ReportReason is the reason that shall be printed in the error
-%% report.
-%%
-%% These functions are introduced in order to add the stack trace in
-%% the error report produced when a callback is terminated with
-%% erlang:exit/1 (OTP-12263).
+%% The Class, Reason and Stack are given to erlang:raise/3
+%% to make sure proc_lib receives the proper reasons and
+%% stacktraces.
%% ---------------------------------------------------
try_dispatch({'$gen_cast', Msg}, Mod, State) ->
@@ -621,15 +625,10 @@ try_dispatch(Mod, Func, Msg, State) ->
[Mod, Msg]),
{ok, {noreply, State}};
true ->
- Stacktrace = erlang:get_stacktrace(),
- {'EXIT', {R, Stacktrace}, {R, Stacktrace}}
+ {'EXIT', error, R, erlang:get_stacktrace()}
end;
- error:R ->
- Stacktrace = erlang:get_stacktrace(),
- {'EXIT', {R, Stacktrace}, {R, Stacktrace}};
- exit:R ->
- Stacktrace = erlang:get_stacktrace(),
- {'EXIT', R, {R, Stacktrace}}
+ Class:R ->
+ {'EXIT', Class, R, erlang:get_stacktrace()}
end.
try_handle_call(Mod, Msg, From, State) ->
@@ -638,12 +637,8 @@ try_handle_call(Mod, Msg, From, State) ->
catch
throw:R ->
{ok, R};
- error:R ->
- Stacktrace = erlang:get_stacktrace(),
- {'EXIT', {R, Stacktrace}, {R, Stacktrace}};
- exit:R ->
- Stacktrace = erlang:get_stacktrace(),
- {'EXIT', R, {R, Stacktrace}}
+ Class:R ->
+ {'EXIT', Class, R, erlang:get_stacktrace()}
end.
try_terminate(Mod, Reason, State) ->
@@ -654,12 +649,8 @@ try_terminate(Mod, Reason, State) ->
catch
throw:R ->
{ok, R};
- error:R ->
- Stacktrace = erlang:get_stacktrace(),
- {'EXIT', {R, Stacktrace}, {R, Stacktrace}};
- exit:R ->
- Stacktrace = erlang:get_stacktrace(),
- {'EXIT', R, {R, Stacktrace}}
+ Class:R ->
+ {'EXIT', Class, R, erlang:get_stacktrace()}
end;
false ->
{ok, ok}
@@ -684,10 +675,11 @@ handle_msg({'$gen_call', From, Msg}, Parent, Name, State, Mod, HibernateAfterTim
{ok, {noreply, NState, Time1}} ->
loop(Parent, Name, NState, Mod, Time1, HibernateAfterTimeout, []);
{ok, {stop, Reason, Reply, NState}} ->
- {'EXIT', R} =
- (catch terminate(Reason, Name, From, Msg, Mod, NState, [])),
- reply(From, Reply),
- exit(R);
+ try
+ terminate(Reason, ?STACKTRACE(), Name, From, Msg, Mod, NState, [])
+ after
+ reply(From, Reply)
+ end;
Other -> handle_common_reply(Other, Parent, Name, From, Msg, Mod, HibernateAfterTimeout, State)
end;
handle_msg(Msg, Parent, Name, State, Mod, HibernateAfterTimeout) ->
@@ -712,10 +704,11 @@ handle_msg({'$gen_call', From, Msg}, Parent, Name, State, Mod, HibernateAfterTim
{noreply, NState}),
loop(Parent, Name, NState, Mod, Time1, HibernateAfterTimeout, Debug1);
{ok, {stop, Reason, Reply, NState}} ->
- {'EXIT', R} =
- (catch terminate(Reason, Name, From, Msg, Mod, NState, Debug)),
- _ = reply(Name, From, Reply, NState, Debug),
- exit(R);
+ try
+ terminate(Reason, ?STACKTRACE(), Name, From, Msg, Mod, NState, Debug)
+ after
+ _ = reply(Name, From, Reply, NState, Debug)
+ end;
Other ->
handle_common_reply(Other, Parent, Name, From, Msg, Mod, HibernateAfterTimeout, State, Debug)
end;
@@ -730,11 +723,11 @@ handle_common_reply(Reply, Parent, Name, From, Msg, Mod, HibernateAfterTimeout,
{ok, {noreply, NState, Time1}} ->
loop(Parent, Name, NState, Mod, Time1, HibernateAfterTimeout, []);
{ok, {stop, Reason, NState}} ->
- terminate(Reason, Name, From, Msg, Mod, NState, []);
- {'EXIT', ExitReason, ReportReason} ->
- terminate(ExitReason, ReportReason, Name, From, Msg, Mod, State, []);
+ terminate(Reason, ?STACKTRACE(), Name, From, Msg, Mod, NState, []);
+ {'EXIT', Class, Reason, Stacktrace} ->
+ terminate(Class, Reason, Stacktrace, Name, From, Msg, Mod, State, []);
{ok, BadReply} ->
- terminate({bad_return_value, BadReply}, Name, From, Msg, Mod, State, [])
+ terminate({bad_return_value, BadReply}, ?STACKTRACE(), Name, From, Msg, Mod, State, [])
end.
handle_common_reply(Reply, Parent, Name, From, Msg, Mod, HibernateAfterTimeout, State, Debug) ->
@@ -748,11 +741,11 @@ handle_common_reply(Reply, Parent, Name, From, Msg, Mod, HibernateAfterTimeout,
{noreply, NState}),
loop(Parent, Name, NState, Mod, Time1, HibernateAfterTimeout, Debug1);
{ok, {stop, Reason, NState}} ->
- terminate(Reason, Name, From, Msg, Mod, NState, Debug);
- {'EXIT', ExitReason, ReportReason} ->
- terminate(ExitReason, ReportReason, Name, From, Msg, Mod, State, Debug);
+ terminate(Reason, ?STACKTRACE(), Name, From, Msg, Mod, NState, Debug);
+ {'EXIT', Class, Reason, Stacktrace} ->
+ terminate(Class, Reason, Stacktrace, Name, From, Msg, Mod, State, Debug);
{ok, BadReply} ->
- terminate({bad_return_value, BadReply}, Name, From, Msg, Mod, State, Debug)
+ terminate({bad_return_value, BadReply}, ?STACKTRACE(), Name, From, Msg, Mod, State, Debug)
end.
reply(Name, {To, Tag}, Reply, State, Debug) ->
@@ -770,7 +763,7 @@ system_continue(Parent, Debug, [Name, State, Mod, Time, HibernateAfterTimeout])
-spec system_terminate(_, _, _, [_]) -> no_return().
system_terminate(Reason, _Parent, Debug, [Name, State, Mod, _Time, _HibernateAfterTimeout]) ->
- terminate(Reason, Name, undefined, [], Mod, State, Debug).
+ terminate(Reason, ?STACKTRACE(), Name, undefined, [], Mod, State, Debug).
system_code_change([Name, State, Mod, Time, HibernateAfterTimeout], _Module, OldVsn, Extra) ->
case catch Mod:code_change(OldVsn, State, Extra) of
@@ -811,35 +804,58 @@ print_event(Dev, Event, Name) ->
%%% ---------------------------------------------------
%%% Terminate the server.
+%%%
+%%% terminate/8 is triggered by {stop, Reason} or bad
+%%% return values. The stacktrace is generated via the
+%%% ?STACKTRACE() macro and the ReportReason must not
+%%% be wrapped in tuples.
+%%%
+%%% terminate/9 is triggered in case of error/exit in
+%%% the user callback. In this case the report reason
+%%% always includes the user stacktrace.
+%%%
+%%% The reason received in the terminate/2 callbacks
+%%% always includes the stacktrace for errors and never
+%%% for exits.
%%% ---------------------------------------------------
-
--spec terminate(_, _, _, _, _, _, _) -> no_return().
-terminate(Reason, Name, From, Msg, Mod, State, Debug) ->
- terminate(Reason, Reason, Name, From, Msg, Mod, State, Debug).
-spec terminate(_, _, _, _, _, _, _, _) -> no_return().
-terminate(ExitReason, ReportReason, Name, From, Msg, Mod, State, Debug) ->
- Reply = try_terminate(Mod, ExitReason, State),
+terminate(Reason, Stacktrace, Name, From, Msg, Mod, State, Debug) ->
+ terminate(exit, Reason, Stacktrace, Reason, Name, From, Msg, Mod, State, Debug).
+
+-spec terminate(_, _, _, _, _, _, _, _, _) -> no_return().
+terminate(Class, Reason, Stacktrace, Name, From, Msg, Mod, State, Debug) ->
+ ReportReason = {Reason, Stacktrace},
+ terminate(Class, Reason, Stacktrace, ReportReason, Name, From, Msg, Mod, State, Debug).
+
+-spec terminate(_, _, _, _, _, _, _, _, _, _) -> no_return().
+terminate(Class, Reason, Stacktrace, ReportReason, Name, From, Msg, Mod, State, Debug) ->
+ Reply = try_terminate(Mod, terminate_reason(Class, Reason, Stacktrace), State),
case Reply of
- {'EXIT', ExitReason1, ReportReason1} ->
+ {'EXIT', C, R, S} ->
FmtState = format_status(terminate, Mod, get(), State),
- error_info(ReportReason1, Name, From, Msg, FmtState, Debug),
- exit(ExitReason1);
+ error_info({R, S}, Name, From, Msg, FmtState, Debug),
+ erlang:raise(C, R, S);
_ ->
- case ExitReason of
- normal ->
- exit(normal);
- shutdown ->
- exit(shutdown);
- {shutdown,_}=Shutdown ->
- exit(Shutdown);
+ case {Class, Reason} of
+ {exit, normal} -> ok;
+ {exit, shutdown} -> ok;
+ {exit, {shutdown,_}} -> ok;
_ ->
FmtState = format_status(terminate, Mod, get(), State),
- error_info(ReportReason, Name, From, Msg, FmtState, Debug),
- exit(ExitReason)
+ error_info(ReportReason, Name, From, Msg, FmtState, Debug)
end
+ end,
+ case Stacktrace of
+ [] ->
+ erlang:Class(Reason);
+ _ ->
+ erlang:raise(Class, Reason, Stacktrace)
end.
+terminate_reason(error, Reason, Stacktrace) -> {Reason, Stacktrace};
+terminate_reason(exit, Reason, _Stacktrace) -> Reason.
+
error_info(_Reason, application_controller, _From, _Msg, _State, _Debug) ->
%% OTP-5811 Don't send an error report if it's the system process
%% application_controller which is terminating - let init take care
@@ -861,14 +877,15 @@ error_info(Reason, Name, From, Msg, State, Debug) ->
end
end;
_ ->
- Reason
+ error_logger:limit_term(Reason)
end,
{ClientFmt, ClientArgs} = client_stacktrace(From),
- format("** Generic server ~p terminating \n"
- "** Last message in was ~p~n"
- "** When Server state == ~p~n"
- "** Reason for termination == ~n** ~p~n" ++ ClientFmt,
- [Name, Msg, State, Reason1] ++ ClientArgs),
+ LimitedState = error_logger:limit_term(State),
+ error_logger:format("** Generic server ~p terminating \n"
+ "** Last message in was ~p~n"
+ "** When Server state == ~p~n"
+ "** Reason for termination == ~n** ~p~n" ++ ClientFmt,
+ [Name, Msg, LimitedState, Reason1] ++ ClientArgs),
sys:print_log(Debug),
ok.
client_stacktrace(undefined) ->
diff --git a/lib/stdlib/src/gen_statem.erl b/lib/stdlib/src/gen_statem.erl
index 86109f04b4..b5e9da1e66 100644
--- a/lib/stdlib/src/gen_statem.erl
+++ b/lib/stdlib/src/gen_statem.erl
@@ -1722,6 +1722,8 @@ error_info(
end;
_ -> {Reason,Stacktrace}
end,
+ [LimitedP, LimitedFmtData, LimitedFixedReason] =
+ [error_logger:limit_term(D) || D <- [P, FmtData, FixedReason]],
CBMode =
case StateEnter of
true ->
@@ -1755,8 +1757,8 @@ error_info(
[] -> [];
[Event|_] -> [Event]
end] ++
- [FmtData,
- Class,FixedReason,
+ [LimitedFmtData,
+ Class,LimitedFixedReason,
CBMode] ++
case Q of
[_|[_|_] = Events] -> [Events];
@@ -1764,7 +1766,7 @@ error_info(
end ++
case P of
[] -> [];
- _ -> [P]
+ _ -> [LimitedP]
end ++
case FixedStacktrace of
[] -> [];
diff --git a/lib/stdlib/src/io_lib.erl b/lib/stdlib/src/io_lib.erl
index 5ed2f4d888..9d447418f8 100644
--- a/lib/stdlib/src/io_lib.erl
+++ b/lib/stdlib/src/io_lib.erl
@@ -84,6 +84,8 @@
-export([write_unicode_string/1, write_unicode_char/1,
deep_unicode_char_list/1]).
+-export([limit_term/2]).
+
-export_type([chars/0, latin1_string/0, continuation/0,
fread_error/0, fread_item/0, format_spec/0]).
@@ -911,3 +913,116 @@ binrev(L) ->
binrev(L, T) ->
list_to_binary(lists:reverse(L, T)).
+
+-spec limit_term(term(), non_neg_integer()) -> term().
+
+%% The intention is to mimic the depth limitation of io_lib:write()
+%% and io_lib_pretty:print(). The leaves ('...') should never be
+%% seen when printed with the same depth. Bitstrings are never
+%% truncated, which is OK as long as they are not sent to other nodes.
+limit_term(Term, Depth) ->
+ try test_limit(Term, Depth) of
+ ok -> Term
+ catch
+ throw:limit ->
+ limit(Term, Depth)
+ end.
+
+limit(_, 0) -> '...';
+limit([H|T]=L, D) ->
+ if
+ D =:= 1 -> '...';
+ true ->
+ case printable_list(L) of
+ true -> L;
+ false ->
+ [limit(H, D-1)|limit_tail(T, D-1)]
+ end
+ end;
+limit(Term, D) when is_map(Term) ->
+ limit_map(Term, D);
+limit({}=T, _D) -> T;
+limit(T, D) when is_tuple(T) ->
+ if
+ D =:= 1 -> '...';
+ true ->
+ list_to_tuple([limit(element(1, T), D-1)|
+ limit_tail(tl(tuple_to_list(T)), D-1)])
+ end;
+limit(<<_/bitstring>>=Term, D) -> limit_bitstring(Term, D);
+limit(Term, _D) -> Term.
+
+limit_tail([], _D) -> [];
+limit_tail(_, 1) -> ['...'];
+limit_tail([H|T], D) ->
+ [limit(H, D-1)|limit_tail(T, D-1)];
+limit_tail(Other, D) ->
+ limit(Other, D-1).
+
+%% Cannot limit maps properly since there is no guarantee that
+%% maps:from_list() creates a map with the same internal ordering of
+%% the selected associations as in Map.
+limit_map(Map, D) ->
+ maps:from_list(erts_internal:maps_to_list(Map, D)).
+%% maps:from_list(limit_map_body(erts_internal:maps_to_list(Map, D), D)).
+
+%% limit_map_body(_, 0) -> [{'...', '...'}];
+%% limit_map_body([], _) -> [];
+%% limit_map_body([{K,V}], D) -> [limit_map_assoc(K, V, D)];
+%% limit_map_body([{K,V}|KVs], D) ->
+%% [limit_map_assoc(K, V, D) | limit_map_body(KVs, D-1)].
+
+%% limit_map_assoc(K, V, D) ->
+%% {limit(K, D-1), limit(V, D-1)}.
+
+limit_bitstring(B, _D) -> B. %% Keeps all printable binaries.
+
+test_limit(_, 0) -> throw(limit);
+test_limit([H|T]=L, D) when is_integer(D) ->
+ if
+ D =:= 1 -> throw(limit);
+ true ->
+ case printable_list(L) of
+ true -> ok;
+ false ->
+ test_limit(H, D-1),
+ test_limit_tail(T, D-1)
+ end
+ end;
+test_limit(Term, D) when is_map(Term) ->
+ test_limit_map(Term, D);
+test_limit({}, _D) -> ok;
+test_limit(T, D) when is_tuple(T) ->
+ test_limit_tuple(T, 1, tuple_size(T), D);
+test_limit(<<_/bitstring>>=Term, D) -> test_limit_bitstring(Term, D);
+test_limit(_Term, _D) -> ok.
+
+test_limit_tail([], _D) -> ok;
+test_limit_tail(_, 1) -> throw(limit);
+test_limit_tail([H|T], D) ->
+ test_limit(H, D-1),
+ test_limit_tail(T, D-1);
+test_limit_tail(Other, D) ->
+ test_limit(Other, D-1).
+
+test_limit_tuple(_T, I, Sz, _D) when I > Sz -> ok;
+test_limit_tuple(_, _, _, 1) -> throw(limit);
+test_limit_tuple(T, I, Sz, D) ->
+ test_limit(element(I, T), D-1),
+ test_limit_tuple(T, I+1, Sz, D-1).
+
+test_limit_map(_Map, _D) -> ok.
+%% test_limit_map_body(erts_internal:maps_to_list(Map, D), D).
+
+%% test_limit_map_body(_, 0) -> throw(limit);
+%% test_limit_map_body([], _) -> ok;
+%% test_limit_map_body([{K,V}], D) -> test_limit_map_assoc(K, V, D);
+%% test_limit_map_body([{K,V}|KVs], D) ->
+%% test_limit_map_assoc(K, V, D),
+%% test_limit_map_body(KVs, D-1).
+
+%% test_limit_map_assoc(K, V, D) ->
+%% test_limit(K, D-1),
+%% test_limit(V, D-1).
+
+test_limit_bitstring(_, _) -> ok.
diff --git a/lib/stdlib/src/proc_lib.erl b/lib/stdlib/src/proc_lib.erl
index 2219467a8d..3fa54cd0d5 100644
--- a/lib/stdlib/src/proc_lib.erl
+++ b/lib/stdlib/src/proc_lib.erl
@@ -1,7 +1,7 @@
%%
%% %CopyrightBegin%
%%
-%% Copyright Ericsson AB 1996-2016. All Rights Reserved.
+%% Copyright Ericsson AB 1996-2017. All Rights Reserved.
%%
%% Licensed under the Apache License, Version 2.0 (the "License");
%% you may not use this file except in compliance with the License.
@@ -519,7 +519,8 @@ my_info_1(Class, Reason, Stacktrace) ->
get_process_info(self(), registered_name),
{error_info, {Class,Reason,Stacktrace}},
get_ancestors(self()),
- get_process_info(self(), messages),
+ get_process_info(self(), message_queue_len),
+ get_messages(self()),
get_process_info(self(), links),
get_cleaned_dictionary(self()),
get_process_info(self(), trap_exit),
@@ -539,12 +540,49 @@ get_ancestors(Pid) ->
{ancestors,[]}
end.
+%% The messages and the dictionary are possibly limited too much if
+%% some error handles output the messages or the dictionary using ~P
+%% or ~W with depth greater than the depth used here (the depth of
+%% control characters P and W takes precedence over the depth set by
+%% application variable error_logger_format_depth). However, it is
+%% assumed that all report handlers call proc_lib:format().
+get_messages(Pid) ->
+ Messages = get_process_messages(Pid),
+ {messages, error_logger:limit_term(Messages)}.
+
+get_process_messages(Pid) ->
+ Depth = error_logger:get_format_depth(),
+ case Pid =/= self() orelse Depth =:= unlimited of
+ true ->
+ {messages, Messages} = get_process_info(Pid, messages),
+ Messages;
+ false ->
+ %% If there are more messages than Depth, garbage
+ %% collection can sometimes be avoided by collecting just
+ %% enough messages for the crash report. It is assumed the
+ %% process is about to die anyway.
+ receive_messages(Depth)
+ end.
+
+receive_messages(0) -> [];
+receive_messages(N) ->
+ receive
+ M ->
+ [M|receive_messages(N - 1)]
+ after 0 ->
+ []
+ end.
+
get_cleaned_dictionary(Pid) ->
case get_process_info(Pid,dictionary) of
- {dictionary,Dict} -> {dictionary,clean_dict(Dict)};
+ {dictionary,Dict} -> {dictionary,cleaned_dict(Dict)};
_ -> {dictionary,[]}
end.
+cleaned_dict(Dict) ->
+ CleanDict = clean_dict(Dict),
+ error_logger:limit_term(CleanDict).
+
clean_dict([{'$ancestors',_}|Dict]) ->
clean_dict(Dict);
clean_dict([{'$initial_call',_}|Dict]) ->
@@ -582,20 +620,24 @@ make_neighbour_reports1([P|Ps]) ->
make_neighbour_reports1([]) ->
[].
+%% Do not include messages or process dictionary, even if
+%% error_logger_format_depth is unlimited.
make_neighbour_report(Pid) ->
[{pid, Pid},
get_process_info(Pid, registered_name),
get_initial_call(Pid),
get_process_info(Pid, current_function),
get_ancestors(Pid),
- get_process_info(Pid, messages),
+ get_process_info(Pid, message_queue_len),
+ %% get_messages(Pid),
get_process_info(Pid, links),
- get_cleaned_dictionary(Pid),
+ %% get_cleaned_dictionary(Pid),
get_process_info(Pid, trap_exit),
get_process_info(Pid, status),
get_process_info(Pid, heap_size),
get_process_info(Pid, stack_size),
- get_process_info(Pid, reductions)
+ get_process_info(Pid, reductions),
+ get_process_info(Pid, current_stacktrace)
].
get_initial_call(Pid) ->
@@ -722,24 +764,37 @@ format(CrashReport, Encoding) ->
format([OwnReport,LinkReport], Encoding, Depth) ->
Extra = {Encoding,Depth},
- OwnFormat = format_report(OwnReport, Extra),
- LinkFormat = format_report(LinkReport, Extra),
+ MyIndent = " ",
+ OwnFormat = format_report(OwnReport, MyIndent, Extra),
+ LinkFormat = format_link_report(LinkReport, MyIndent, Extra),
Str = io_lib:format(" crasher:~n~ts neighbours:~n~ts",
[OwnFormat, LinkFormat]),
lists:flatten(Str).
-format_report(Rep, Extra) when is_list(Rep) ->
- format_rep(Rep, Extra);
-format_report(Rep, {Enc,_}) ->
- io_lib:format("~"++modifier(Enc)++"p~n", [Rep]).
-
-format_rep([{initial_call,InitialCall}|Rep], {_Enc,Depth}=Extra) ->
- [format_mfa(InitialCall, Depth)|format_rep(Rep, Extra)];
-format_rep([{error_info,{Class,Reason,StackTrace}}|Rep], Extra) ->
- [format_exception(Class, Reason, StackTrace, Extra)|format_rep(Rep, Extra)];
-format_rep([{Tag,Data}|Rep], Extra) ->
- [format_tag(Tag, Data, Extra)|format_rep(Rep, Extra)];
-format_rep(_, _Extra) ->
+format_link_report([Link|Reps], Indent, Extra) ->
+ Rep = case Link of
+ {neighbour,Rep0} -> Rep0;
+ _ -> Link
+ end,
+ LinkIndent = [" ",Indent],
+ [Indent,"neighbour:\n",format_report(Rep, LinkIndent, Extra)|
+ format_link_report(Reps, Indent, Extra)];
+format_link_report([], _, _) ->
+ [].
+
+format_report(Rep, Indent, Extra) when is_list(Rep) ->
+ format_rep(Rep, Indent, Extra);
+format_report(Rep, Indent, {Enc,Depth}) ->
+ io_lib:format("~s~"++modifier(Enc)++"P~n", [Indent, Rep, Depth]).
+
+format_rep([{initial_call,InitialCall}|Rep], Indent, Extra) ->
+ [format_mfa(Indent, InitialCall, Extra)|format_rep(Rep, Indent, Extra)];
+format_rep([{error_info,{Class,Reason,StackTrace}}|Rep], Indent, Extra) ->
+ [format_exception(Class, Reason, StackTrace, Extra)|
+ format_rep(Rep, Indent, Extra)];
+format_rep([{Tag,Data}|Rep], Indent, Extra) ->
+ [format_tag(Indent, Tag, Data, Extra)|format_rep(Rep, Indent, Extra)];
+format_rep(_, _, _Extra) ->
[].
format_exception(Class, Reason, StackTrace, {Enc,_}=Extra) ->
@@ -750,14 +805,14 @@ format_exception(Class, Reason, StackTrace, {Enc,_}=Extra) ->
[EI, lib:format_exception(1+length(EI), Class, Reason,
StackTrace, StackFun, PF, Enc), "\n"].
-format_mfa({M,F,Args}=StartF, Depth) ->
+format_mfa(Indent, {M,F,Args}=StartF, Extra) ->
try
A = length(Args),
- [" initial call: ",atom_to_list(M),$:,atom_to_list(F),$/,
+ [Indent,"initial call: ",atom_to_list(M),$:,atom_to_list(F),$/,
integer_to_list(A),"\n"]
catch
error:_ ->
- format_tag(initial_call, StartF, Depth)
+ format_tag(Indent, initial_call, StartF, Extra)
end.
pp_fun({Enc,Depth}) ->
@@ -770,12 +825,12 @@ pp_fun({Enc,Depth}) ->
io_lib:format("~." ++ integer_to_list(I) ++ P, [Term|Tl])
end.
-format_tag(Tag, Data, {_Enc,Depth}) ->
+format_tag(Indent, Tag, Data, {_Enc,Depth}) ->
case Depth of
unlimited ->
- io_lib:format(" ~p: ~80.18p~n", [Tag, Data]);
+ io_lib:format("~s~p: ~80.18p~n", [Indent, Tag, Data]);
_ ->
- io_lib:format(" ~p: ~80.18P~n", [Tag, Data, Depth])
+ io_lib:format("~s~p: ~80.18P~n", [Indent, Tag, Data, Depth])
end.
modifier(latin1) -> "";
diff --git a/lib/stdlib/test/erl_lint_SUITE.erl b/lib/stdlib/test/erl_lint_SUITE.erl
index 02524679fa..cc3d605840 100644
--- a/lib/stdlib/test/erl_lint_SUITE.erl
+++ b/lib/stdlib/test/erl_lint_SUITE.erl
@@ -3978,7 +3978,11 @@ otp_14323(Config) ->
{13,erl_lint,{undefined_function,{a,1}}},
{14,erl_lint,{bad_dialyzer_attribute,
{nowarn_function,{a,-1}}}}],
- []}}],
+ []}},
+ {otp_14323_2,
+ <<"-type t(_) :: atom().">>,
+ [],
+ {errors,[{1,erl_parse,"bad type variable"}],[]}}],
[] = run(Config, Ts),
ok.
diff --git a/lib/stdlib/test/gen_server_SUITE.erl b/lib/stdlib/test/gen_server_SUITE.erl
index 7e3c71715e..2e9dc4d4fb 100644
--- a/lib/stdlib/test/gen_server_SUITE.erl
+++ b/lib/stdlib/test/gen_server_SUITE.erl
@@ -404,7 +404,7 @@ crash(Config) when is_list(Config) ->
end,
receive
{error_report,_,{Pid4,crash_report,[List4|_]}} ->
- {exit,crashed,_} = proplists:get_value(error_info, List4),
+ {exit,crashed,[{?MODULE, handle_call, 3, _}|_]} = proplists:get_value(error_info, List4),
Pid4 = proplists:get_value(pid, List4);
Other4 ->
io:format("Unexpected: ~p", [Other4]),
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 2024-07-27 10:55:43 +0000