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-rw-r--r--lib/dialyzer/src/dialyzer.erl24
-rw-r--r--lib/dialyzer/src/dialyzer.hrl4
-rw-r--r--lib/dialyzer/src/dialyzer_behaviours.erl47
-rw-r--r--lib/dialyzer/src/dialyzer_cl_parse.erl9
-rw-r--r--lib/dialyzer/src/dialyzer_options.erl10
-rw-r--r--lib/dialyzer/test/behaviour_SUITE_data/dialyzer_options2
-rw-r--r--lib/dialyzer/test/behaviour_SUITE_data/results/callbacks_and_specs5
-rw-r--r--lib/dialyzer/test/behaviour_SUITE_data/results/gen_event_incorrect_return2
-rw-r--r--lib/dialyzer/test/behaviour_SUITE_data/results/gen_server_incorrect_args4
-rw-r--r--lib/dialyzer/test/behaviour_SUITE_data/results/sample_behaviour14
-rw-r--r--lib/dialyzer/test/behaviour_SUITE_data/results/sample_behaviour_old4
-rw-r--r--lib/dialyzer/test/behaviour_SUITE_data/results/supervisor_incorrect_return2
-rw-r--r--lib/dialyzer/test/r9c_SUITE_data/results/mnesia4
13 files changed, 89 insertions, 42 deletions
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()}