From ae36dda6c36ecee6888993f0f275d02e149e7484 Mon Sep 17 00:00:00 2001 From: Stavros Aronis Date: Wed, 19 Sep 2012 16:39:31 +0200 Subject: Fix handling of tuple set remote types appearing in tuple sets Originally reported by Joseph Wayne Norton, simplified testcase provided by Hans Bolinder. --- .../test/small_SUITE_data/results/contracts_with_subtypes | 2 +- lib/dialyzer/test/small_SUITE_data/src/remote_tuple_set.erl | 8 ++++++++ 2 files changed, 9 insertions(+), 1 deletion(-) create mode 100644 lib/dialyzer/test/small_SUITE_data/src/remote_tuple_set.erl (limited to 'lib/dialyzer') diff --git a/lib/dialyzer/test/small_SUITE_data/results/contracts_with_subtypes b/lib/dialyzer/test/small_SUITE_data/results/contracts_with_subtypes index 8dc0361b0d..4850f3ff0c 100644 --- a/lib/dialyzer/test/small_SUITE_data/results/contracts_with_subtypes +++ b/lib/dialyzer/test/small_SUITE_data/results/contracts_with_subtypes @@ -6,7 +6,7 @@ contracts_with_subtypes.erl:109: The call contracts_with_subtypes:rec_arg({'b',{ contracts_with_subtypes.erl:110: The call contracts_with_subtypes:rec_arg({'a',{'b',{'a','b'}}}) breaks the contract (Arg) -> 'ok' when is_subtype(Arg,{'a',A} | {'b',B}), is_subtype(A,'a' | {'b',B}), is_subtype(B,'b' | {'a',A}) contracts_with_subtypes.erl:111: The call contracts_with_subtypes:rec_arg({'b',{'a',{'b','a'}}}) breaks the contract (Arg) -> 'ok' when is_subtype(Arg,{'a',A} | {'b',B}), is_subtype(A,'a' | {'b',B}), is_subtype(B,'b' | {'a',A}) contracts_with_subtypes.erl:142: The pattern 1 can never match the type binary() | string() -contracts_with_subtypes.erl:145: The pattern 'alpha' can never match the type {'ok',X} | {'ok',X,binary() | string()} +contracts_with_subtypes.erl:145: The pattern 'alpha' can never match the type {'ok',_} | {'ok',_,binary() | string()} contracts_with_subtypes.erl:147: The pattern 42 can never match the type {'ok',_} | {'ok',_,binary() | string()} contracts_with_subtypes.erl:163: The pattern 'alpha' can never match the type {'ok',X} contracts_with_subtypes.erl:165: The pattern 42 can never match the type {'ok',X} diff --git a/lib/dialyzer/test/small_SUITE_data/src/remote_tuple_set.erl b/lib/dialyzer/test/small_SUITE_data/src/remote_tuple_set.erl new file mode 100644 index 0000000000..6c440ed04c --- /dev/null +++ b/lib/dialyzer/test/small_SUITE_data/src/remote_tuple_set.erl @@ -0,0 +1,8 @@ +-module(remote_tuple_set). + +-export([parse_cidr/0]). + +-spec parse_cidr() -> {inet:address_family(),1,2} | {error}. + +parse_cidr() -> + {inet,1,2}. -- cgit v1.2.3 From f985ec421d2a9da3186445157f82185c7c4dea72 Mon Sep 17 00:00:00 2001 From: Stavros Aronis Date: Fri, 21 Sep 2012 10:09:26 +0200 Subject: Respect {plt_check,false} option when using dialyzer:run/1 --- lib/dialyzer/src/dialyzer.erl | 19 +++++++++++-------- 1 file changed, 11 insertions(+), 8 deletions(-) (limited to 'lib/dialyzer') diff --git a/lib/dialyzer/src/dialyzer.erl b/lib/dialyzer/src/dialyzer.erl index 3e3c12405f..99388438b1 100644 --- a/lib/dialyzer/src/dialyzer.erl +++ b/lib/dialyzer/src/dialyzer.erl @@ -162,14 +162,17 @@ run(Opts) -> {error, Msg} -> throw({dialyzer_error, Msg}); OptsRecord -> - case cl_check_init(OptsRecord) of - {ok, ?RET_NOTHING_SUSPICIOUS} -> - case dialyzer_cl:start(OptsRecord) of - {?RET_DISCREPANCIES, Warnings} -> Warnings; - {?RET_NOTHING_SUSPICIOUS, []} -> [] - end; - {error, ErrorMsg1} -> - throw({dialyzer_error, ErrorMsg1}) + case OptsRecord#options.check_plt of + true -> + case cl_check_init(OptsRecord) of + {ok, ?RET_NOTHING_SUSPICIOUS} -> ok; + {error, ErrorMsg1} -> throw({dialyzer_error, ErrorMsg1}) + end; + false -> ok + end, + case dialyzer_cl:start(OptsRecord) of + {?RET_DISCREPANCIES, Warnings} -> Warnings; + {?RET_NOTHING_SUSPICIOUS, []} -> [] end catch throw:{dialyzer_error, ErrorMsg} -> -- cgit v1.2.3 From fc17b0ed2bc905b51ed4c4ea5f13efd866bc4f80 Mon Sep 17 00:00:00 2001 From: Stavros Aronis Date: Wed, 5 Sep 2012 16:42:10 +0200 Subject: Remove old untested experimental extension This extension allowed minimal detection of race conditions that were passing through behaviour API calls, but had no tests in any suite and also caused a crash in R15B02. --- lib/dialyzer/src/dialyzer_analysis_callgraph.erl | 9 +- lib/dialyzer/src/dialyzer_behaviours.erl | 106 +---------------------- lib/dialyzer/src/dialyzer_dataflow.erl | 53 ++---------- 3 files changed, 11 insertions(+), 157 deletions(-) (limited to 'lib/dialyzer') diff --git a/lib/dialyzer/src/dialyzer_analysis_callgraph.erl b/lib/dialyzer/src/dialyzer_analysis_callgraph.erl index c237d4e0e9..86618a4915 100644 --- a/lib/dialyzer/src/dialyzer_analysis_callgraph.erl +++ b/lib/dialyzer/src/dialyzer_analysis_callgraph.erl @@ -326,13 +326,6 @@ cleanup_callgraph(#analysis_state{plt = InitPlt, parent = Parent, ModuleDeps = dialyzer_callgraph:module_deps(Callgraph), send_mod_deps(Parent, ModuleDeps), {Callgraph1, ExtCalls} = dialyzer_callgraph:remove_external(Callgraph), - RelevantAPICalls = - dialyzer_behaviours:get_behaviour_apis([gen_server]), - BehaviourAPICalls = [Call || {_From, To} = Call <- ExtCalls, - lists:member(To, RelevantAPICalls)], - Callgraph2 = - dialyzer_callgraph:put_behaviour_api_calls(BehaviourAPICalls, - Callgraph1), ExtCalls1 = [Call || Call = {_From, To} <- ExtCalls, not dialyzer_plt:contains_mfa(InitPlt, To)], {BadCalls1, RealExtCalls} = @@ -355,7 +348,7 @@ cleanup_callgraph(#analysis_state{plt = InitPlt, parent = Parent, true -> send_ext_calls(Parent, lists:usort([To || {_From, To} <- RealExtCalls])) end, - Callgraph2. + Callgraph1. compile_src(File, Includes, Defines, Callgraph, CServer, UseContracts) -> DefaultIncludes = default_includes(filename:dirname(File)), diff --git a/lib/dialyzer/src/dialyzer_behaviours.erl b/lib/dialyzer/src/dialyzer_behaviours.erl index b84071b95c..36aef2a37f 100644 --- a/lib/dialyzer/src/dialyzer_behaviours.erl +++ b/lib/dialyzer/src/dialyzer_behaviours.erl @@ -30,11 +30,9 @@ -module(dialyzer_behaviours). --export([check_callbacks/5, get_behaviour_apis/1, - translate_behaviour_api_call/5, translatable_behaviours/1, - translate_callgraph/3]). +-export([check_callbacks/5]). --export_type([behaviour/0, behaviour_api_dict/0]). +-export_type([behaviour/0]). %%-------------------------------------------------------------------- @@ -224,103 +222,3 @@ get_line([]) -> -1. get_file([{file, File}|_]) -> File; get_file([_|Tail]) -> get_file(Tail). - -%%----------------------------------------------------------------------------- - --spec translatable_behaviours(cerl:c_module()) -> behaviour_api_dict(). - -translatable_behaviours(Tree) -> - Attrs = cerl:module_attrs(Tree), - {Behaviours, _BehLines} = get_behaviours(Attrs), - [{B, Calls} || B <- Behaviours, (Calls = behaviour_api_calls(B)) =/= []]. - --spec get_behaviour_apis([behaviour()]) -> [mfa()]. - -get_behaviour_apis(Behaviours) -> - get_behaviour_apis(Behaviours, []). - --spec translate_behaviour_api_call(dialyzer_callgraph:mfa_or_funlbl(), - [erl_types:erl_type()], - [dialyzer_races:core_vars()], - module(), - behaviour_api_dict()) -> - {dialyzer_callgraph:mfa_or_funlbl(), - [erl_types:erl_type()], - [dialyzer_races:core_vars()]} - | 'plain_call'. - -translate_behaviour_api_call(_Fun, _ArgTypes, _Args, _Module, []) -> - plain_call; -translate_behaviour_api_call({Module, Fun, Arity}, ArgTypes, Args, - CallbackModule, BehApiInfo) -> - case lists:keyfind(Module, 1, BehApiInfo) of - false -> plain_call; - {Module, Calls} -> - case lists:keyfind({Fun, Arity}, 1, Calls) of - false -> plain_call; - {{Fun, Arity}, {CFun, CArity, COrder}} -> - {{CallbackModule, CFun, CArity}, - [nth_or_0(N, ArgTypes, erl_types:t_any()) || N <-COrder], - [nth_or_0(N, Args, bypassed) || N <-COrder]} - end - end; -translate_behaviour_api_call(_Fun, _ArgTypes, _Args, _Module, _BehApiInfo) -> - plain_call. - --spec translate_callgraph(behaviour_api_dict(), atom(), - dialyzer_callgraph:callgraph()) -> - dialyzer_callgraph:callgraph(). - -translate_callgraph([{Behaviour,_}|Behaviours], Module, Callgraph) -> - UsedCalls = [Call || {_From, {M, _F, _A}} = Call <- - dialyzer_callgraph:get_behaviour_api_calls(Callgraph), - M =:= Behaviour], - Calls = [{{Behaviour, API, Arity}, Callback} || - {{API, Arity}, Callback} <- behaviour_api_calls(Behaviour)], - DirectCalls = [{From, {Module, Fun, Arity}} || - {From, To} <- UsedCalls,{API, {Fun, Arity, _Ord}} <- Calls, - To =:= API], - dialyzer_callgraph:add_edges(DirectCalls, Callgraph), - translate_callgraph(Behaviours, Module, Callgraph); -translate_callgraph([], _Module, Callgraph) -> - Callgraph. - -get_behaviour_apis([], Acc) -> - Acc; -get_behaviour_apis([Behaviour | Rest], Acc) -> - MFAs = [{Behaviour, Fun, Arity} || - {{Fun, Arity}, _} <- behaviour_api_calls(Behaviour)], - get_behaviour_apis(Rest, MFAs ++ Acc). - -%------------------------------------------------------------------------------ - -nth_or_0(0, _List, Zero) -> - Zero; -nth_or_0(N, List, _Zero) -> - lists:nth(N, List). - -%------------------------------------------------------------------------------ - --type behaviour_api_dict()::[{behaviour(), behaviour_api_info()}]. --type behaviour_api_info()::[{original_fun(), replacement_fun()}]. --type original_fun()::{atom(), arity()}. --type replacement_fun()::{atom(), arity(), arg_list()}. --type arg_list()::[byte()]. - --spec behaviour_api_calls(behaviour()) -> behaviour_api_info(). - -behaviour_api_calls(gen_server) -> - [{{start_link, 3}, {init, 1, [2]}}, - {{start_link, 4}, {init, 1, [3]}}, - {{start, 3}, {init, 1, [2]}}, - {{start, 4}, {init, 1, [3]}}, - {{call, 2}, {handle_call, 3, [2, 0, 0]}}, - {{call, 3}, {handle_call, 3, [2, 0, 0]}}, - {{multi_call, 2}, {handle_call, 3, [2, 0, 0]}}, - {{multi_call, 3}, {handle_call, 3, [3, 0, 0]}}, - {{multi_call, 4}, {handle_call, 3, [3, 0, 0]}}, - {{cast, 2}, {handle_cast, 2, [2, 0]}}, - {{abcast, 2}, {handle_cast, 2, [2, 0]}}, - {{abcast, 3}, {handle_cast, 2, [3, 0]}}]; -behaviour_api_calls(_Other) -> - []. diff --git a/lib/dialyzer/src/dialyzer_dataflow.erl b/lib/dialyzer/src/dialyzer_dataflow.erl index 7131633da1..0ef008bc58 100644 --- a/lib/dialyzer/src/dialyzer_dataflow.erl +++ b/lib/dialyzer/src/dialyzer_dataflow.erl @@ -91,9 +91,8 @@ warning_mode = false :: boolean(), warnings = [] :: [dial_warning()], work :: {[_], [_], set()}, - module :: module(), - behaviour_api_dict = [] :: - dialyzer_behaviours:behaviour_api_dict()}). + module :: module() + }). -record(map, {dict = dict:new() :: dict(), subst = dict:new() :: dict(), @@ -135,38 +134,15 @@ get_fun_types(Tree, Plt, Callgraph, Records) -> analyze_module(Tree, Plt, Callgraph, Records, GetWarnings) -> debug_pp(Tree, false), Module = cerl:atom_val(cerl:module_name(Tree)), - RaceDetection = dialyzer_callgraph:get_race_detection(Callgraph), - BehaviourTranslations = - case RaceDetection of - true -> dialyzer_behaviours:translatable_behaviours(Tree); - false -> [] - end, TopFun = cerl:ann_c_fun([{label, top}], [], Tree), - State = - state__new(Callgraph, TopFun, Plt, Module, Records, BehaviourTranslations), + State = state__new(Callgraph, TopFun, Plt, Module, Records), State1 = state__race_analysis(not GetWarnings, State), State2 = analyze_loop(State1), case GetWarnings of true -> State3 = state__set_warning_mode(State2), State4 = analyze_loop(State3), - - %% EXPERIMENTAL: Turn all behaviour API calls into calls to the - %% respective callback module's functions. - - case BehaviourTranslations of - [] -> dialyzer_races:race(State4); - Behaviours -> - Digraph = dialyzer_callgraph:get_digraph(State4#state.callgraph), - TranslatedCallgraph = - dialyzer_behaviours:translate_callgraph(Behaviours, Module, - Callgraph), - St = - dialyzer_races:race(State4#state{callgraph = TranslatedCallgraph}), - FinalCallgraph = dialyzer_callgraph:put_digraph(Digraph, - St#state.callgraph), - St#state{callgraph = FinalCallgraph} - end; + dialyzer_races:race(State4); false -> State2 end. @@ -530,21 +506,8 @@ handle_apply_or_call([{TypeOfApply, {Fun, Sig, Contr, LocalRet}}|Left], Ann = cerl:get_ann(Tree), File = get_file(Ann), Line = abs(get_line(Ann)), - - %% EXPERIMENTAL: Turn a behaviour's API call into a call to the - %% respective callback module's function. - - Module = State#state.module, - BehApiDict = State#state.behaviour_api_dict, - {RealFun, RealArgTypes, RealArgs} = - case dialyzer_behaviours:translate_behaviour_api_call(Fun, ArgTypes, - Args, Module, - BehApiDict) of - plain_call -> {Fun, ArgTypes, Args}; - BehaviourAPI -> BehaviourAPI - end, - dialyzer_races:store_race_call(RealFun, RealArgTypes, RealArgs, - {File, Line}, State); + dialyzer_races:store_race_call(Fun, ArgTypes, Args, + {File, Line}, State); false -> State end, FailedConj = any_none([RetWithoutLocal|NewArgTypes]), @@ -2711,7 +2674,7 @@ determine_mode(Type, Opaques) -> %%% %%% =========================================================================== -state__new(Callgraph, Tree, Plt, Module, Records, BehaviourTranslations) -> +state__new(Callgraph, Tree, Plt, Module, Records) -> Opaques = erl_types:module_builtin_opaques(Module) ++ erl_types:t_opaque_from_records(Records), TreeMap = build_tree_map(Tree), @@ -2725,7 +2688,7 @@ state__new(Callgraph, Tree, Plt, Module, Records, BehaviourTranslations) -> #state{callgraph = Callgraph, envs = Env, fun_tab = FunTab, opaques = Opaques, plt = Plt, races = dialyzer_races:new(), records = Records, warning_mode = false, warnings = [], work = Work, tree_map = TreeMap, - module = Module, behaviour_api_dict = BehaviourTranslations}. + module = Module}. state__warning_mode(#state{warning_mode = WM}) -> WM. -- cgit v1.2.3 From 5e766039bb990ac17a9559301ad1599e250bf9e7 Mon Sep 17 00:00:00 2001 From: Stavros Aronis Date: Wed, 5 Sep 2012 18:25:48 +0200 Subject: Fix a crash in race condition detection Analysis is not always able to find the variable labels and names for any kind of arguments passed to the ets module functions. --- lib/dialyzer/src/dialyzer_races.erl | 5 ++++- .../test/race_SUITE_data/results/ets_insert_args10 | 2 ++ .../test/race_SUITE_data/src/ets_insert_args10.erl | 19 +++++++++++++++++++ 3 files changed, 25 insertions(+), 1 deletion(-) create mode 100644 lib/dialyzer/test/race_SUITE_data/results/ets_insert_args10 create mode 100644 lib/dialyzer/test/race_SUITE_data/src/ets_insert_args10.erl (limited to 'lib/dialyzer') diff --git a/lib/dialyzer/src/dialyzer_races.erl b/lib/dialyzer/src/dialyzer_races.erl index cdb9f25999..2aa8343bce 100644 --- a/lib/dialyzer/src/dialyzer_races.erl +++ b/lib/dialyzer/src/dialyzer_races.erl @@ -1758,7 +1758,10 @@ compare_var_list(Var, VarList, RaceVarMap) -> ets_list_args(MaybeList) -> case is_list(MaybeList) of - true -> [ets_tuple_args(T) || T <- MaybeList]; + true -> + try [ets_tuple_args(T) || T <- MaybeList] + catch _:_ -> [?no_label] + end; false -> [ets_tuple_args(MaybeList)] end. diff --git a/lib/dialyzer/test/race_SUITE_data/results/ets_insert_args10 b/lib/dialyzer/test/race_SUITE_data/results/ets_insert_args10 new file mode 100644 index 0000000000..c3c9b12bdd --- /dev/null +++ b/lib/dialyzer/test/race_SUITE_data/results/ets_insert_args10 @@ -0,0 +1,2 @@ + +ets_insert_args10.erl:9: The call ets:insert(T::'foo',[{'counter',number()},...]) might have an unintended effect due to a possible race condition caused by its combination with the ets:lookup(T::'foo','counter') call in ets_insert_args10.erl on line 8 diff --git a/lib/dialyzer/test/race_SUITE_data/src/ets_insert_args10.erl b/lib/dialyzer/test/race_SUITE_data/src/ets_insert_args10.erl new file mode 100644 index 0000000000..c897a34af0 --- /dev/null +++ b/lib/dialyzer/test/race_SUITE_data/src/ets_insert_args10.erl @@ -0,0 +1,19 @@ +%% This tests the presence of possible races due to an ets:lookup/ets:insert +%% combination. It takes into account the argument types of the calls. + +-module(ets_insert_args10). +-export([start/0]). + +start() -> + F = fun(T) -> [{_, N}] = ets:lookup(T, counter), + ets:insert(T, [{counter, N+1}]) + end, + io:format("Created ~w\n", [ets:new(foo, [named_table, public])]), + A = {counter, 0}, + B = [], + ets:insert(foo, [A|B]), + io:format("Inserted ~w\n", [{counter, 0}]), + F(foo), + io:format("Update complete\n", []), + ObjectList = ets:lookup(foo, counter), + io:format("Counter: ~w\n", [ObjectList]). -- cgit v1.2.3