From 8167578ca6b23f3043ae2e21ded4b13b8db74e20 Mon Sep 17 00:00:00 2001 From: Stavros Aronis Date: Mon, 14 Nov 2011 17:01:59 +0100 Subject: Wrap up behaviours patch for Dialyzer Enable warnings by default, add two options for suppressing them, fix warning formatting and update testsuites. --- lib/dialyzer/src/dialyzer.erl | 24 ++++++----- lib/dialyzer/src/dialyzer.hrl | 4 +- lib/dialyzer/src/dialyzer_behaviours.erl | 47 ++++++++++++++++------ lib/dialyzer/src/dialyzer_cl_parse.erl | 9 +++-- lib/dialyzer/src/dialyzer_options.erl | 10 +++-- .../test/behaviour_SUITE_data/dialyzer_options | 2 +- .../results/callbacks_and_specs | 5 +++ .../results/gen_event_incorrect_return | 2 +- .../results/gen_server_incorrect_args | 4 +- .../behaviour_SUITE_data/results/sample_behaviour | 14 +++---- .../results/sample_behaviour_old | 4 +- .../results/supervisor_incorrect_return | 2 +- lib/dialyzer/test/r9c_SUITE_data/results/mnesia | 4 ++ 13 files changed, 89 insertions(+), 42 deletions(-) create mode 100644 lib/dialyzer/test/behaviour_SUITE_data/results/callbacks_and_specs (limited to 'lib/dialyzer') diff --git a/lib/dialyzer/src/dialyzer.erl b/lib/dialyzer/src/dialyzer.erl index 487a12b252..3e3c12405f 100644 --- a/lib/dialyzer/src/dialyzer.erl +++ b/lib/dialyzer/src/dialyzer.erl @@ -442,18 +442,24 @@ message_to_string({opaque_type_test, [Fun, Opaque]}) -> message_to_string({race_condition, [M, F, Args, Reason]}) -> io_lib:format("The call ~w:~w~s ~s\n", [M, F, Args, Reason]); %%----- Warnings for behaviour errors -------------------- -message_to_string({callback_type_mismatch, [B, F, A, T]}) -> - io_lib:format("The inferred return type for ~w/~w is ~s which is not valid" - " return for the callback of the ~w behaviour\n", - [F, A, T, B]); -message_to_string({callback_arg_type_mismatch, [B, F, A, N, T]}) -> - io_lib:format("The inferred type for the ~s argument of ~w/~w is ~s which is" - " not valid for the callback of the ~w behaviour" - "\n", [ordinal(N), F, A, T, B]); +message_to_string({callback_type_mismatch, [B, F, A, ST, CT]}) -> + io_lib:format("The inferred return type of ~w/~w (~s) has nothing in common" + " with ~s, which is the expected return type for the callback of" + " ~w behaviour\n", [F, A, ST, CT, B]); +message_to_string({callback_arg_type_mismatch, [B, F, A, N, ST, CT]}) -> + io_lib:format("The inferred type for the ~s argument of ~w/~w (~s) is" + " not a supertype of ~s, which is expected type for this" + " argument in the callback of the ~w behaviour\n", + [ordinal(N), F, A, ST, CT, B]); message_to_string({callback_spec_type_mismatch, [B, F, A, ST, CT]}) -> io_lib:format("The return type ~s in the specification of ~w/~w is not a" " subtype of ~s, which is the expected return type for the" - " callback of ~w behaviour.\n", [ST, F, A, CT, B]); + " callback of ~w behaviour\n", [ST, F, A, CT, B]); +message_to_string({callback_spec_arg_type_mismatch, [B, F, A, N, ST, CT]}) -> + io_lib:format("The specified type for the ~s argument of ~w/~w (~s) is" + " not a supertype of ~s, which is expected type for this" + " argument in the callback of the ~w behaviour\n", + [ordinal(N), F, A, ST, CT, B]); message_to_string({callback_missing, [B, F, A]}) -> io_lib:format("Undefined callback function ~w/~w (behaviour '~w')\n", [F, A, B]); diff --git a/lib/dialyzer/src/dialyzer.hrl b/lib/dialyzer/src/dialyzer.hrl index 9d2e554981..5e089d1773 100644 --- a/lib/dialyzer/src/dialyzer.hrl +++ b/lib/dialyzer/src/dialyzer.hrl @@ -57,6 +57,7 @@ -define(WARN_UNMATCHED_RETURN, warn_umatched_return). -define(WARN_RACE_CONDITION, warn_race_condition). -define(WARN_BEHAVIOUR, warn_behaviour). +-define(WARN_UNDEFINED_CALLBACK, warn_undefined_callbacks). %% %% The following type has double role: @@ -71,7 +72,8 @@ | ?WARN_CONTRACT_NOT_EQUAL | ?WARN_CONTRACT_SUBTYPE | ?WARN_CONTRACT_SUPERTYPE | ?WARN_CALLGRAPH | ?WARN_UNMATCHED_RETURN | ?WARN_RACE_CONDITION - | ?WARN_BEHAVIOUR | ?WARN_CONTRACT_RANGE. + | ?WARN_BEHAVIOUR | ?WARN_CONTRACT_RANGE + | ?WARN_UNDEFINED_CALLBACK. %% %% This is the representation of each warning as they will be returned diff --git a/lib/dialyzer/src/dialyzer_behaviours.erl b/lib/dialyzer/src/dialyzer_behaviours.erl index a30707c7c3..56eb46d78a 100644 --- a/lib/dialyzer/src/dialyzer_behaviours.erl +++ b/lib/dialyzer/src/dialyzer_behaviours.erl @@ -125,7 +125,8 @@ check_all_callbacks(Module, Behaviour, [Cb|Rest], true -> [{callback_type_mismatch, [Behaviour, Function, Arity, - erl_types:t_to_string(ReturnType, Records)]}|Acc00] + erl_types:t_to_string(ReturnType, Records), + erl_types:t_to_string(CbReturnType, Records)]}|Acc00] end end, Acc02 = @@ -133,7 +134,7 @@ check_all_callbacks(Module, Behaviour, [Cb|Rest], erl_types:t_inf_lists(ArgTypes, CbArgTypes)) of false -> Acc01; true -> - find_mismatching_args(ArgTypes, CbArgTypes, Behaviour, + find_mismatching_args(type, ArgTypes, CbArgTypes, Behaviour, Function, Arity, Records, 1, Acc01) end, Acc02 @@ -153,24 +154,40 @@ check_all_callbacks(Module, Behaviour, [Cb|Rest], erl_types:t_to_string(SpecReturnType, Records), erl_types:t_to_string(CbReturnType, Records)]}|Acc10] end, - Acc11 + Acc12 = + case erl_types:any_none( + erl_types:t_inf_lists(SpecArgTypes, CbArgTypes)) of + false -> Acc11; + true -> + find_mismatching_args({spec, File, Line}, SpecArgTypes, + CbArgTypes, Behaviour, Function, + Arity, Records, 1, Acc11) + end, + Acc12 end, NewAcc = Acc2, check_all_callbacks(Module, Behaviour, Rest, State, NewAcc). -find_mismatching_args([], [], _Beh, _Function, _Arity, _Records, _N, Acc) -> +find_mismatching_args(_, [], [], _Beh, _Function, _Arity, _Records, _N, Acc) -> Acc; -find_mismatching_args([Type|Rest], [CbType|CbRest], Behaviour, +find_mismatching_args(Kind, [Type|Rest], [CbType|CbRest], Behaviour, Function, Arity, Records, N, Acc) -> case erl_types:t_is_none(erl_types:t_inf(Type, CbType)) of false -> - find_mismatching_args(Rest, CbRest, Behaviour, Function, + find_mismatching_args(Kind, Rest, CbRest, Behaviour, Function, Arity, Records, N+1, Acc); true -> + Info = + [Behaviour, Function, Arity, N, + erl_types:t_to_string(Type, Records), + erl_types:t_to_string(CbType, Records)], NewAcc = - [{callback_arg_type_mismatch, - [Behaviour, Function, Arity, N, erl_types:t_to_string(Type, Records)]}|Acc], - find_mismatching_args(Rest, CbRest, Behaviour, Function, + [case Kind of + type -> {callback_arg_type_mismatch, Info}; + {spec, File, Line} -> + {callback_spec_arg_type_mismatch, [File, Line | Info]} + end | Acc], + find_mismatching_args(Kind, Rest, CbRest, Behaviour, Function, Arity, Records, N+1, NewAcc) end. @@ -178,9 +195,15 @@ add_tag_file_line(_Module, {Tag, [B|_R]} = Warn, State) when Tag =:= callback_missing; Tag =:= callback_info_missing -> {B, Line} = lists:keyfind(B, 1, State#state.behlines), - {?WARN_BEHAVIOUR, {State#state.filename, Line}, Warn}; -add_tag_file_line(Module, {Tag, [File, Line|R]}, State) - when Tag =:= callback_spec_type_mismatch -> + Category = + case Tag of + callback_missing -> ?WARN_BEHAVIOUR; + callback_info_missing -> ?WARN_UNDEFINED_CALLBACK + end, + {Category, {State#state.filename, Line}, Warn}; +add_tag_file_line(_Module, {Tag, [File, Line|R]}, _State) + when Tag =:= callback_spec_type_mismatch; + Tag =:= callback_spec_arg_type_mismatch -> {?WARN_BEHAVIOUR, {File, Line}, {Tag, R}}; add_tag_file_line(Module, {_Tag, [_B, Fun, Arity|_R]} = Warn, State) -> {_A, FunCode} = diff --git a/lib/dialyzer/src/dialyzer_cl_parse.erl b/lib/dialyzer/src/dialyzer_cl_parse.erl index f80eb81ac6..ff8fc39a5e 100644 --- a/lib/dialyzer/src/dialyzer_cl_parse.erl +++ b/lib/dialyzer/src/dialyzer_cl_parse.erl @@ -491,6 +491,12 @@ warning_options_msg() -> Suppress warnings for patterns that are unused or cannot match. -Wno_opaque Suppress warnings for violations of opaqueness of data types. + -Wno_behaviours + Suppress warnings about behaviour callbacks which drift from the published + recommended interfaces. + -Wno_undefined_callbacks + Suppress warnings about behaviours that have no -callback attributes for + their callbacks. -Wunmatched_returns *** Include warnings for function calls which ignore a structured return value or do not match against one of many possible return value(s). @@ -498,9 +504,6 @@ warning_options_msg() -> Include warnings for functions that only return by means of an exception. -Wrace_conditions *** Include warnings for possible race conditions. - -Wbehaviours *** - Include warnings about behaviour callbacks which drift from the published - recommended interfaces. -Wunderspecs *** Warn about underspecified functions (those whose -spec is strictly more allowing than the success typing). diff --git a/lib/dialyzer/src/dialyzer_options.erl b/lib/dialyzer/src/dialyzer_options.erl index b2a67de8bd..866650a0b2 100644 --- a/lib/dialyzer/src/dialyzer_options.erl +++ b/lib/dialyzer/src/dialyzer_options.erl @@ -49,7 +49,9 @@ build(Opts) -> ?WARN_CALLGRAPH, ?WARN_CONTRACT_RANGE, ?WARN_CONTRACT_TYPES, - ?WARN_CONTRACT_SYNTAX], + ?WARN_CONTRACT_SYNTAX, + ?WARN_BEHAVIOUR, + ?WARN_UNDEFINED_CALLBACK], DefaultWarns1 = ordsets:from_list(DefaultWarns), InitPlt = dialyzer_plt:get_default_plt(), DefaultOpts = #options{}, @@ -275,14 +277,16 @@ build_warnings([Opt|Opts], Warnings) -> no_contracts -> Warnings1 = ordsets:del_element(?WARN_CONTRACT_SYNTAX, Warnings), ordsets:del_element(?WARN_CONTRACT_TYPES, Warnings1); + no_behaviours -> + ordsets:del_element(?WARN_BEHAVIOUR, Warnings); + no_undefined_callbacks -> + ordsets:del_element(?WARN_UNDEFINED_CALLBACK, Warnings); unmatched_returns -> ordsets:add_element(?WARN_UNMATCHED_RETURN, Warnings); error_handling -> ordsets:add_element(?WARN_RETURN_ONLY_EXIT, Warnings); race_conditions -> ordsets:add_element(?WARN_RACE_CONDITION, Warnings); - behaviours -> - ordsets:add_element(?WARN_BEHAVIOUR, Warnings); specdiffs -> S = ordsets:from_list([?WARN_CONTRACT_SUBTYPE, ?WARN_CONTRACT_SUPERTYPE, diff --git a/lib/dialyzer/test/behaviour_SUITE_data/dialyzer_options b/lib/dialyzer/test/behaviour_SUITE_data/dialyzer_options index 6df50943d8..50991c9bc5 100644 --- a/lib/dialyzer/test/behaviour_SUITE_data/dialyzer_options +++ b/lib/dialyzer/test/behaviour_SUITE_data/dialyzer_options @@ -1 +1 @@ -{dialyzer_options, [{warnings, [behaviours]}]}. +{dialyzer_options, []}. diff --git a/lib/dialyzer/test/behaviour_SUITE_data/results/callbacks_and_specs b/lib/dialyzer/test/behaviour_SUITE_data/results/callbacks_and_specs new file mode 100644 index 0000000000..da498c225d --- /dev/null +++ b/lib/dialyzer/test/behaviour_SUITE_data/results/callbacks_and_specs @@ -0,0 +1,5 @@ + +my_callbacks_wrong.erl:26: The return type #state{parent::'undefined' | pid(),status::'closed' | 'init' | 'open',subscribe::[{pid(),integer()}],counter::integer()} in the specification of callback_init/1 is not a subtype of {'ok',_}, which is the expected return type for the callback of my_behaviour behaviour +my_callbacks_wrong.erl:28: The inferred return type of callback_init/1 (#state{parent::'undefined' | pid(),status::'init',subscribe::[],counter::1}) has nothing in common with {'ok',_}, which is the expected return type for the callback of my_behaviour behaviour +my_callbacks_wrong.erl:30: The return type {'noreply',#state{parent::'undefined' | pid(),status::'closed' | 'init' | 'open',subscribe::[{pid(),integer()}],counter::integer()}} | {'reply',#state{parent::'undefined' | pid(),status::'closed' | 'init' | 'open',subscribe::[{pid(),integer()}],counter::integer()}} in the specification of callback_cast/3 is not a subtype of {'noreply',_}, which is the expected return type for the callback of my_behaviour behaviour +my_callbacks_wrong.erl:39: The specified type for the 2nd argument of callback_call/3 (atom()) is not a supertype of pid(), which is expected type for this argument in the callback of the my_behaviour behaviour diff --git a/lib/dialyzer/test/behaviour_SUITE_data/results/gen_event_incorrect_return b/lib/dialyzer/test/behaviour_SUITE_data/results/gen_event_incorrect_return index 41c6dae55f..2afb5db133 100644 --- a/lib/dialyzer/test/behaviour_SUITE_data/results/gen_event_incorrect_return +++ b/lib/dialyzer/test/behaviour_SUITE_data/results/gen_event_incorrect_return @@ -1,2 +1,2 @@ -gen_event_incorrect_return.erl:16: The inferred return type for init/1 is 'error' which is not valid return for the callback of the gen_event behaviour +gen_event_incorrect_return.erl:16: The inferred return type of init/1 ('error') has nothing in common with {'ok',_} | {'ok',_,'hibernate'}, which is the expected return type for the callback of gen_event behaviour diff --git a/lib/dialyzer/test/behaviour_SUITE_data/results/gen_server_incorrect_args b/lib/dialyzer/test/behaviour_SUITE_data/results/gen_server_incorrect_args index 333216bc5c..3e98da785f 100644 --- a/lib/dialyzer/test/behaviour_SUITE_data/results/gen_server_incorrect_args +++ b/lib/dialyzer/test/behaviour_SUITE_data/results/gen_server_incorrect_args @@ -4,5 +4,5 @@ gen_server_incorrect_args.erl:3: Undefined callback function handle_cast/2 (beha gen_server_incorrect_args.erl:3: Undefined callback function handle_info/2 (behaviour 'gen_server') gen_server_incorrect_args.erl:3: Undefined callback function init/1 (behaviour 'gen_server') gen_server_incorrect_args.erl:3: Undefined callback function terminate/2 (behaviour 'gen_server') -gen_server_incorrect_args.erl:7: The inferred return type for handle_call/3 is {'no'} | {'ok'} which is not valid return for the callback of the gen_server behaviour -gen_server_incorrect_args.erl:7: The inferred type for the 2nd argument of handle_call/3 is 'boo' | 'foo' which is not valid for the callback of the gen_server behaviour +gen_server_incorrect_args.erl:7: The inferred return type of handle_call/3 ({'no'} | {'ok'}) has nothing in common with {'noreply',_} | {'noreply',_,'hibernate' | 'infinity' | non_neg_integer()} | {'reply',_,_} | {'stop',_,_} | {'reply',_,_,'hibernate' | 'infinity' | non_neg_integer()} | {'stop',_,_,_}, which is the expected return type for the callback of gen_server behaviour +gen_server_incorrect_args.erl:7: The inferred type for the 2nd argument of handle_call/3 ('boo' | 'foo') is not a supertype of {pid(),_}, which is expected type for this argument in the callback of the gen_server behaviour diff --git a/lib/dialyzer/test/behaviour_SUITE_data/results/sample_behaviour b/lib/dialyzer/test/behaviour_SUITE_data/results/sample_behaviour index 7420da2476..a38e662ccf 100644 --- a/lib/dialyzer/test/behaviour_SUITE_data/results/sample_behaviour +++ b/lib/dialyzer/test/behaviour_SUITE_data/results/sample_behaviour @@ -1,9 +1,9 @@ -sample_callback_wrong.erl:15: The inferred return type for sample_callback_2/0 is 42 which is not valid return for the callback of the sample_behaviour behaviour -sample_callback_wrong.erl:16: The inferred return type for sample_callback_3/0 is 'fair' which is not valid return for the callback of the sample_behaviour behaviour -sample_callback_wrong.erl:17: The inferred return type for sample_callback_4/1 is 'fail' which is not valid return for the callback of the sample_behaviour behaviour -sample_callback_wrong.erl:19: The inferred return type for sample_callback_5/1 is string() which is not valid return for the callback of the sample_behaviour behaviour -sample_callback_wrong.erl:19: The inferred type for the 1st argument of sample_callback_5/1 is atom() which is not valid for the callback of the sample_behaviour behaviour -sample_callback_wrong.erl:21: The inferred return type for sample_callback_6/3 is {'okk',number()} which is not valid return for the callback of the sample_behaviour behaviour -sample_callback_wrong.erl:21: The inferred type for the 3rd argument of sample_callback_6/3 is atom() which is not valid for the callback of the sample_behaviour behaviour +sample_callback_wrong.erl:15: The inferred return type of sample_callback_2/0 (42) has nothing in common with atom(), which is the expected return type for the callback of sample_behaviour behaviour +sample_callback_wrong.erl:16: The inferred return type of sample_callback_3/0 ('fair') has nothing in common with 'fail' | {'ok',1..255}, which is the expected return type for the callback of sample_behaviour behaviour +sample_callback_wrong.erl:17: The inferred return type of sample_callback_4/1 ('fail') has nothing in common with 'ok', which is the expected return type for the callback of sample_behaviour behaviour +sample_callback_wrong.erl:19: The inferred return type of sample_callback_5/1 (string()) has nothing in common with 'fail' | 'ok', which is the expected return type for the callback of sample_behaviour behaviour +sample_callback_wrong.erl:19: The inferred type for the 1st argument of sample_callback_5/1 (atom()) is not a supertype of 1..255, which is expected type for this argument in the callback of the sample_behaviour behaviour +sample_callback_wrong.erl:21: The inferred return type of sample_callback_6/3 ({'okk',number()}) has nothing in common with 'fail' | {'ok',1..255}, which is the expected return type for the callback of sample_behaviour behaviour +sample_callback_wrong.erl:21: The inferred type for the 3rd argument of sample_callback_6/3 (atom()) is not a supertype of string(), which is expected type for this argument in the callback of the sample_behaviour behaviour sample_callback_wrong.erl:3: Undefined callback function sample_callback_1/0 (behaviour 'sample_behaviour') diff --git a/lib/dialyzer/test/behaviour_SUITE_data/results/sample_behaviour_old b/lib/dialyzer/test/behaviour_SUITE_data/results/sample_behaviour_old index 948ea49ab1..f0181bb59c 100644 --- a/lib/dialyzer/test/behaviour_SUITE_data/results/sample_behaviour_old +++ b/lib/dialyzer/test/behaviour_SUITE_data/results/sample_behaviour_old @@ -1,4 +1,4 @@ -incorrect_args_callback.erl:12: The inferred type for the 2nd argument of bar/2 is 'yes' which is not valid for the callback of the correct_behaviour behaviour -incorrect_return_callback.erl:9: The inferred return type for foo/0 is 'error' which is not valid return for the callback of the correct_behaviour behaviour +incorrect_args_callback.erl:12: The inferred type for the 2nd argument of bar/2 ('yes') is not a supertype of [any()], which is expected type for this argument in the callback of the correct_behaviour behaviour +incorrect_return_callback.erl:9: The inferred return type of foo/0 ('error') has nothing in common with 'no' | 'yes', which is the expected return type for the callback of correct_behaviour behaviour missing_callback.erl:5: Undefined callback function foo/0 (behaviour 'correct_behaviour') diff --git a/lib/dialyzer/test/behaviour_SUITE_data/results/supervisor_incorrect_return b/lib/dialyzer/test/behaviour_SUITE_data/results/supervisor_incorrect_return index c96eb733a2..e89caf3cf7 100644 --- a/lib/dialyzer/test/behaviour_SUITE_data/results/supervisor_incorrect_return +++ b/lib/dialyzer/test/behaviour_SUITE_data/results/supervisor_incorrect_return @@ -1,2 +1,2 @@ -supervisor_incorrect_return.erl:14: The inferred return type for init/1 is {'ok',{{'one_against_one',0,1},[{_,_,_,_,_,_},...]}} which is not valid return for the callback of the supervisor behaviour +supervisor_incorrect_return.erl:14: The inferred return type of init/1 ({'ok',{{'one_against_one',0,1},[{_,_,_,_,_,_},...]}}) has nothing in common with 'ignore' | {'ok',{{'one_for_all',non_neg_integer(),non_neg_integer()} | {'one_for_one',non_neg_integer(),non_neg_integer()} | {'rest_for_one',non_neg_integer(),non_neg_integer()} | {'simple_one_for_one',non_neg_integer(),non_neg_integer()},[{_,{atom() | tuple(),atom(),'undefined' | [any()]},'permanent' | 'temporary' | 'transient','brutal_kill' | 'infinity' | non_neg_integer(),'supervisor' | 'worker','dynamic' | [atom() | tuple()]}]}}, which is the expected return type for the callback of supervisor behaviour diff --git a/lib/dialyzer/test/r9c_SUITE_data/results/mnesia b/lib/dialyzer/test/r9c_SUITE_data/results/mnesia index 2be71ac7d7..b397d37523 100644 --- a/lib/dialyzer/test/r9c_SUITE_data/results/mnesia +++ b/lib/dialyzer/test/r9c_SUITE_data/results/mnesia @@ -2,6 +2,7 @@ mnesia.erl:1319: Guard test size(Spec::[{_,_,_},...]) can never succeed mnesia.erl:1498: The call mnesia:bad_info_reply(Tab::atom(),Item::'type') will never return since it differs in the 2nd argument from the success typing arguments: (atom(),'memory' | 'size') mnesia.erl:331: Function mod2abs/1 has no local return +mnesia_backup.erl:49: Callback info about the mnesia_backup behaviour is not available mnesia_bup.erl:111: The created fun has no local return mnesia_bup.erl:574: Function fallback_receiver/2 has no local return mnesia_bup.erl:967: Function uninstall_fallback_master/2 has no local return @@ -12,9 +13,12 @@ mnesia_controller.erl:1679: The pattern {'stop', Reason, Reply, State2} can neve mnesia_controller.erl:1685: The pattern {'noreply', State2, _Timeout} can never match the type {'reply',_,_} mnesia_event.erl:77: The pattern 'remove_handler' can never match the type {'ok',_} mnesia_event.erl:79: The pattern {'swap_handler', Args1, State1, Mod2, Args2} can never match the type {'ok',_} +mnesia_frag.erl:26: Callback info about the mnesia_access behaviour is not available mnesia_frag.erl:294: The call mnesia_frag:remote_collect(Ref::reference(),{'error',_},[],OldSelectFun::fun(() -> [any()])) will never return since it differs in the 2nd argument from the success typing arguments: (reference(),'ok',[any()],fun(() -> [any()])) mnesia_frag.erl:304: The call mnesia_frag:remote_collect(Ref::reference(),{'error',{'node_not_running',_}},[],OldSelectFun::fun(() -> [any()])) will never return since it differs in the 2nd argument from the success typing arguments: (reference(),'ok',[any()],fun(() -> [any()])) mnesia_frag.erl:312: The call mnesia_frag:remote_collect(Ref::reference(),LocalRes::{'error',_},[],OldSelectFun::fun(() -> [any()])) will never return since it differs in the 2nd argument from the success typing arguments: (reference(),'ok',[any()],fun(() -> [any()])) +mnesia_frag_hash.erl:24: Callback info about the mnesia_frag_hash behaviour is not available +mnesia_frag_old_hash.erl:23: Callback info about the mnesia_frag_hash behaviour is not available mnesia_index.erl:52: The call mnesia_lib:other_val(Var::{_,'commit_work' | 'index' | 'setorbag' | 'storage_type' | {'index',_}},_ReASoN_::any()) will never return since it differs in the 1st argument from the success typing arguments: ({_,'active_replicas' | 'where_to_read' | 'where_to_write'},any()) mnesia_lib.erl:1028: The pattern {'EXIT', Reason} can never match the type [any()] | {'error',_} mnesia_lib.erl:957: The pattern {'ok', {0, _}} can never match the type 'eof' | {'error',atom()} | {'ok',binary() | string()} -- cgit v1.2.3