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-rwxr-xr-xlib/dialyzer/doc/src/notes.xml41
-rw-r--r--lib/dialyzer/src/dialyzer_dataflow.erl13
-rw-r--r--lib/dialyzer/src/dialyzer_succ_typings.erl33
-rw-r--r--lib/dialyzer/test/r9c_SUITE_data/results/asn12
-rw-r--r--lib/dialyzer/test/r9c_SUITE_data/results/inets20
-rw-r--r--lib/dialyzer/test/r9c_SUITE_data/results/mnesia5
-rw-r--r--lib/dialyzer/test/race_SUITE_data/results/extract_translations4
-rw-r--r--lib/dialyzer/test/small_SUITE_data/results/flatten2
-rw-r--r--lib/dialyzer/test/small_SUITE_data/src/binary_lc_bug.erl8
-rw-r--r--lib/dialyzer/test/small_SUITE_data/src/codec_can.erl35
-rw-r--r--lib/dialyzer/test/small_SUITE_data/src/list_to_bitstring.erl21
-rw-r--r--lib/dialyzer/test/small_SUITE_data/src/nowarnunused.erl7
-rw-r--r--lib/dialyzer/vsn.mk2
13 files changed, 163 insertions, 30 deletions
diff --git a/lib/dialyzer/doc/src/notes.xml b/lib/dialyzer/doc/src/notes.xml
index f132a50e0d..81622a3854 100755
--- a/lib/dialyzer/doc/src/notes.xml
+++ b/lib/dialyzer/doc/src/notes.xml
@@ -4,7 +4,7 @@
<chapter>
<header>
<copyright>
- <year>2006</year><year>2010</year>
+ <year>2006</year><year>2011</year>
<holder>Ericsson AB. All Rights Reserved.</holder>
</copyright>
<legalnotice>
@@ -31,6 +31,45 @@
<p>This document describes the changes made to the Dialyzer
application.</p>
+<section><title>Dialyzer 2.4.3</title>
+
+ <section><title>Fixed Bugs and Malfunctions</title>
+ <list>
+ <item>
+ <p>
+ Fix the name of an error function(Thanks to Maria
+ christakis)</p>
+ <p>
+ Own Id: OTP-9175</p>
+ </item>
+ <item>
+ <p>
+ Fix crash related with the contract blame assignment
+ patch</p>
+ <p>
+ Own Id: OTP-9219</p>
+ </item>
+ <item>
+ <p>
+ dialyzer/doc: synchronize manual.txt and dialyzer.xml
+ (Thanks to Tuncer Ayaz)</p>
+ <p>
+ Own Id: OTP-9226</p>
+ </item>
+ <item>
+ <p>
+ Simplify Dialyzer's test suite structure</p>
+ <p>
+ *_SUITE.erl files are now automatically generated by the
+ respective data directories by the Makefile.</p>
+ <p>
+ Own Id: OTP-9278</p>
+ </item>
+ </list>
+ </section>
+
+</section>
+
<section><title>Dialyzer 2.4.2</title>
<section><title>Fixed Bugs and Malfunctions</title>
diff --git a/lib/dialyzer/src/dialyzer_dataflow.erl b/lib/dialyzer/src/dialyzer_dataflow.erl
index 7137dbc036..8cb16d8f09 100644
--- a/lib/dialyzer/src/dialyzer_dataflow.erl
+++ b/lib/dialyzer/src/dialyzer_dataflow.erl
@@ -1414,6 +1414,17 @@ do_clause(C, Arg, ArgType0, OrigArgType, Map,
false ->
true
end;
+ [Pat0, Pat1] -> % binary comprehension
+ case cerl:is_c_cons(Pat0) of
+ true ->
+ not (cerl:is_c_var(cerl:cons_hd(Pat0)) andalso
+ cerl:is_c_var(cerl:cons_tl(Pat0)) andalso
+ cerl:is_c_var(Pat1) andalso
+ cerl:is_literal(Guard) andalso
+ (cerl:concrete(Guard) =:= true));
+ false ->
+ true
+ end;
_ -> true
end;
false ->
@@ -2915,7 +2926,7 @@ state__get_warnings(#state{tree_map = TreeMap, fun_tab = FunTab,
{Warn, Msg} =
case dialyzer_callgraph:lookup_name(FunLbl, Callgraph) of
error -> {true, {unused_fun, []}};
- {ok, {_M, F, A}} = MFA ->
+ {ok, {_M, F, A} = MFA} ->
{not sets:is_element(MFA, NoWarnUnused),
{unused_fun, [F, A]}}
end,
diff --git a/lib/dialyzer/src/dialyzer_succ_typings.erl b/lib/dialyzer/src/dialyzer_succ_typings.erl
index b8da57d3f9..dc5a3fed37 100644
--- a/lib/dialyzer/src/dialyzer_succ_typings.erl
+++ b/lib/dialyzer/src/dialyzer_succ_typings.erl
@@ -158,20 +158,27 @@ postprocess_dataflow_warns([], _State, WAcc, Acc) ->
postprocess_dataflow_warns([{?WARN_CONTRACT_RANGE, {CallF, CallL}, Msg}|Rest],
#st{codeserver = Codeserver} = State, WAcc, Acc) ->
{contract_range, [Contract, M, F, A, ArgStrings, CRet]} = Msg,
- {ok, {{ContrF, _ContrL} = FileLine, _C}} =
- dialyzer_codeserver:lookup_mfa_contract({M,F,A}, Codeserver),
- case CallF =:= ContrF of
- true ->
+ case dialyzer_codeserver:lookup_mfa_contract({M,F,A}, Codeserver) of
+ {ok, {{ContrF, _ContrL} = FileLine, _C}} ->
+ case CallF =:= ContrF of
+ true ->
+ NewMsg = {contract_range, [Contract, M, F, ArgStrings, CallL, CRet]},
+ W = {?WARN_CONTRACT_RANGE, FileLine, NewMsg},
+ Filter =
+ fun({?WARN_CONTRACT_TYPES, FL, _}) when FL =:= FileLine -> false;
+ (_) -> true
+ end,
+ FilterWAcc = lists:filter(Filter, WAcc),
+ postprocess_dataflow_warns(Rest, State, FilterWAcc, [W|Acc]);
+ false ->
+ postprocess_dataflow_warns(Rest, State, WAcc, Acc)
+ end;
+ error ->
+ %% The contract is not in a module that is currently under analysis.
+ %% We display the warning in the file/line of the call.
NewMsg = {contract_range, [Contract, M, F, ArgStrings, CallL, CRet]},
- W = {?WARN_CONTRACT_RANGE, FileLine, NewMsg},
- Filter =
- fun({?WARN_CONTRACT_TYPES, FL, _}) when FL =:= FileLine -> false;
- (_) -> true
- end,
- FilterWAcc = lists:filter(Filter, WAcc),
- postprocess_dataflow_warns(Rest, State, FilterWAcc, [W|Acc]);
- false ->
- postprocess_dataflow_warns(Rest, State, WAcc, Acc)
+ W = {?WARN_CONTRACT_RANGE, {CallF, CallL}, NewMsg},
+ postprocess_dataflow_warns(Rest, State, WAcc, [W|Acc])
end;
postprocess_dataflow_warns([W|Rest], State, Wacc, Acc) ->
postprocess_dataflow_warns(Rest, State, Wacc, [W|Acc]).
diff --git a/lib/dialyzer/test/r9c_SUITE_data/results/asn1 b/lib/dialyzer/test/r9c_SUITE_data/results/asn1
index ac83366bc8..571e562d0d 100644
--- a/lib/dialyzer/test/r9c_SUITE_data/results/asn1
+++ b/lib/dialyzer/test/r9c_SUITE_data/results/asn1
@@ -2,7 +2,7 @@
asn1ct.erl:1500: The variable Err can never match since previous clauses completely covered the type #type{}
asn1ct.erl:1596: The variable _ can never match since previous clauses completely covered the type 'ber_bin_v2'
asn1ct.erl:1673: The pattern 'all' can never match the type 'asn1_module' | 'exclusive_decode' | 'partial_decode'
-asn1ct.erl:672: The pattern <{'false', Result}, _, _> can never match the type <{'true','true'},atom() | binary() | [atom() | binary() | [atom() | binary() | [any()] | char()] | char()],[any()]>
+asn1ct.erl:672: The pattern <{'false', Result}, _, _> can never match the type <{'true','true'},atom() | binary() | [atom() | [any()] | char()],[any()]>
asn1ct.erl:909: Guard test is_atom(Ext::[49 | 97 | 98 | 100 | 110 | 115]) can never succeed
asn1ct_check.erl:1698: The pattern {'error', _} can never match the type [any()]
asn1ct_check.erl:2733: The pattern {'type', Tag, _, _, _, _} can never match the type 'ASN1_OPEN_TYPE' | {_,_} | {'fixedtypevaluefield',_,_}
diff --git a/lib/dialyzer/test/r9c_SUITE_data/results/inets b/lib/dialyzer/test/r9c_SUITE_data/results/inets
index a0551e10d7..6b16dba2ff 100644
--- a/lib/dialyzer/test/r9c_SUITE_data/results/inets
+++ b/lib/dialyzer/test/r9c_SUITE_data/results/inets
@@ -24,7 +24,7 @@ httpd_manager.erl:933: Function acceptor_status/1 will never be called
httpd_request_handler.erl:374: The call httpd_response:send_status(Info::#mod{parsed_header::maybe_improper_list()},417,[32 | 66 | 98 | 100 | 103 | 105 | 111 | 116 | 121,...]) will never return since it differs in the 2nd argument from the success typing arguments: (#mod{socket_type::'ip_comm' | {'ssl',_}},100 | 301 | 304 | 400 | 401 | 403 | 404 | 412 | 414 | 416 | 500 | 501 | 503,any())
httpd_request_handler.erl:378: The call httpd_response:send_status(Info::#mod{parsed_header::maybe_improper_list()},417,[32 | 77 | 97 | 100 | 101 | 104 | 108 | 110 | 111 | 116 | 119,...]) will never return since it differs in the 2nd argument from the success typing arguments: (#mod{socket_type::'ip_comm' | {'ssl',_}},100 | 301 | 304 | 400 | 401 | 403 | 404 | 412 | 414 | 416 | 500 | 501 | 503,any())
httpd_request_handler.erl:401: The call httpd_response:send_status(Info::#mod{parsed_header::maybe_improper_list()},417,[32 | 77 | 97 | 100 | 101 | 104 | 108 | 110 | 111 | 116 | 119,...]) will never return since it differs in the 2nd argument from the success typing arguments: (#mod{socket_type::'ip_comm' | {'ssl',_}},100 | 301 | 304 | 400 | 401 | 403 | 404 | 412 | 414 | 416 | 500 | 501 | 503,any())
-httpd_request_handler.erl:644: The call lists:reverse(Fields0::{'error',_} | {'ok',[[any()]]}) will never return since it differs in the 1st argument from the success typing arguments: ([any()])
+httpd_request_handler.erl:644: The call lists:reverse(Fields0::{'error',_} | {'ok',_}) will never return since it differs in the 1st argument from the success typing arguments: ([any()])
httpd_request_handler.erl:645: Function will never be called
httpd_sup.erl:63: The variable Else can never match since previous clauses completely covered the type {'error',_} | {'ok',[any()],_,_}
httpd_sup.erl:88: The pattern {'error', Reason} can never match the type {'ok',_,_}
@@ -35,17 +35,17 @@ mod_auth_plain.erl:100: The variable _ can never match since previous clauses co
mod_auth_plain.erl:159: The variable _ can never match since previous clauses completely covered the type [any()]
mod_auth_plain.erl:83: The variable O can never match since previous clauses completely covered the type [any()]
mod_cgi.erl:372: The pattern {'http_response', NewAccResponse} can never match the type 'ok'
-mod_dir.erl:101: The call lists:flatten(nonempty_improper_list(atom() | binary() | [any()] | char(),atom())) will never return since it differs in the 1st argument from the success typing arguments: ([any()])
+mod_dir.erl:101: The call lists:flatten(nonempty_improper_list(atom() | [any()] | char(),atom())) will never return since it differs in the 1st argument from the success typing arguments: ([any()])
mod_dir.erl:72: The pattern {'error', Reason} can never match the type {'ok',[[[any()] | char()],...]}
-mod_get.erl:135: The pattern <{'enfile', _}, _Info, Path> can never match the type <atom(),#mod{},atom() | binary() | [atom() | binary() | [any()] | char()]>
-mod_head.erl:80: The pattern <{'enfile', _}, _Info, Path> can never match the type <atom(),#mod{},atom() | binary() | [atom() | binary() | [atom() | binary() | [any()] | char()] | char()]>
+mod_get.erl:135: The pattern <{'enfile', _}, _Info, Path> can never match the type <atom(),#mod{},atom() | binary() | [atom() | [any()] | char()]>
+mod_head.erl:80: The pattern <{'enfile', _}, _Info, Path> can never match the type <atom(),#mod{},atom() | binary() | [atom() | [any()] | char()]>
mod_htaccess.erl:460: The pattern {'error', BadData} can never match the type {'ok',_}
-mod_include.erl:193: The pattern {_, Name, {[], []}} can never match the type {[any()],[any()],maybe_improper_list()}
-mod_include.erl:195: The pattern {_, Name, {PathInfo, []}} can never match the type {[any()],[any()],maybe_improper_list()}
-mod_include.erl:197: The pattern {_, Name, {PathInfo, QueryString}} can never match the type {[any()],[any()],maybe_improper_list()}
-mod_include.erl:201: The variable Gurka can never match since previous clauses completely covered the type {[any()],[any()],maybe_improper_list()}
-mod_include.erl:692: The pattern <{'read', Reason}, Info, Path> can never match the type <{'open',atom()},#mod{},atom() | binary() | [atom() | binary() | [atom() | binary() | [any()] | char()] | char()]>
-mod_include.erl:706: The pattern <{'enfile', _}, _Info, Path> can never match the type <atom(),#mod{},atom() | binary() | [atom() | binary() | [atom() | binary() | [any()] | char()] | char()]>
+mod_include.erl:193: The pattern {_, Name, {[], []}} can never match the type {[any()],[any()],string()}
+mod_include.erl:195: The pattern {_, Name, {PathInfo, []}} can never match the type {[any()],[any()],string()}
+mod_include.erl:197: The pattern {_, Name, {PathInfo, QueryString}} can never match the type {[any()],[any()],string()}
+mod_include.erl:201: The variable Gurka can never match since previous clauses completely covered the type {[any()],[any()],string()}
+mod_include.erl:692: The pattern <{'read', Reason}, Info, Path> can never match the type <{'open',atom()},#mod{},atom() | binary() | [atom() | [any()] | char()]>
+mod_include.erl:706: The pattern <{'enfile', _}, _Info, Path> can never match the type <atom(),#mod{},atom() | binary() | [atom() | [any()] | char()]>
mod_include.erl:716: Function read_error/3 will never be called
mod_include.erl:719: Function read_error/4 will never be called
mod_security_server.erl:386: The variable O can never match since previous clauses completely covered the type [any()]
diff --git a/lib/dialyzer/test/r9c_SUITE_data/results/mnesia b/lib/dialyzer/test/r9c_SUITE_data/results/mnesia
index e199581a0e..b0f4d12ae5 100644
--- a/lib/dialyzer/test/r9c_SUITE_data/results/mnesia
+++ b/lib/dialyzer/test/r9c_SUITE_data/results/mnesia
@@ -6,6 +6,9 @@ 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
mnesia_checkpoint.erl:1014: The variable Error can never match since previous clauses completely covered the type {'ok',#checkpoint_args{nodes::[any()],retainers::[any(),...]}}
+mnesia_checkpoint.erl:1209: Function system_continue/3 has no local return
+mnesia_checkpoint.erl:792: Function retainer_loop/1 has no local return
+mnesia_checkpoint.erl:894: The call sys:handle_system_msg(Msg::any(),From::any(),'no_parent','mnesia_checkpoint',[],Cp::#checkpoint_args{}) breaks the contract (Msg,From,Parent,Module,Debug,Misc) -> Void when is_subtype(Msg,term()), is_subtype(From,{pid(),Tag::_}), is_subtype(Parent,pid()), is_subtype(Module,module()), is_subtype(Debug,[dbg_opt()]), is_subtype(Misc,term()), is_subtype(Void,term())
mnesia_controller.erl:1666: The variable Tab can never match since previous clauses completely covered the type [any()]
mnesia_controller.erl:1679: The pattern {'stop', Reason, Reply, State2} can never match the type {'noreply',_} | {'reply',_,_} | {'stop','shutdown',#state{}}
mnesia_controller.erl:1685: The pattern {'noreply', State2, _Timeout} can never match the type {'reply',_,_}
@@ -15,6 +18,7 @@ mnesia_frag.erl:294: The call mnesia_frag:remote_collect(Ref::reference(),{'erro
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_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()}
mnesia_lib.erl:959: The pattern {'ok', {_, Bin}} can never match the type 'eof' | {'error',atom()} | {'ok',binary() | string()}
mnesia_loader.erl:36: The call mnesia_lib:other_val(Var::{_,'access_mode' | 'cstruct' | 'db_nodes' | 'setorbag' | 'snmp' | 'storage_type'},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())
@@ -30,5 +34,6 @@ mnesia_schema.erl:1258: Guard test FromS::'disc_copies' | 'disc_only_copies' | '
mnesia_schema.erl:1639: The pattern {'false', 'mandatory'} can never match the type {'false','optional'}
mnesia_schema.erl:2434: The variable Reason can never match since previous clauses completely covered the type {'error',_} | {'ok',_}
mnesia_schema.erl:451: Guard test UseDirAnyway::'false' == 'true' can never succeed
+mnesia_text.erl:180: The variable T can never match since previous clauses completely covered the type {'error',{integer(),atom() | tuple(),_}} | {'ok',_}
mnesia_tm.erl:1522: Function commit_participant/5 has no local return
mnesia_tm.erl:2169: Function system_terminate/4 has no local return
diff --git a/lib/dialyzer/test/race_SUITE_data/results/extract_translations b/lib/dialyzer/test/race_SUITE_data/results/extract_translations
index f7d5abc6f5..62aa1aa511 100644
--- a/lib/dialyzer/test/race_SUITE_data/results/extract_translations
+++ b/lib/dialyzer/test/race_SUITE_data/results/extract_translations
@@ -1,5 +1,5 @@
-extract_translations.erl:140: The call ets:insert('files',{atom() | binary() | [atom() | binary() | [atom() | binary() | [any()] | char()] | char()]}) might have an unintended effect due to a possible race condition caused by its combination with the ets:lookup('files',File::atom() | binary() | [atom() | binary() | [atom() | binary() | [any()] | char()] | char()]) call in extract_translations.erl on line 135
+extract_translations.erl:140: The call ets:insert('files',{atom() | binary() | [atom() | [any()] | char()]}) might have an unintended effect due to a possible race condition caused by its combination with the ets:lookup('files',File::atom() | binary() | [atom() | [any()] | char()]) call in extract_translations.erl on line 135
extract_translations.erl:146: The call ets:insert('translations',{_,[]}) might have an unintended effect due to a possible race condition caused by its combination with the ets:lookup('translations',Str::any()) call in extract_translations.erl on line 126
-extract_translations.erl:152: The call ets:insert('files',{atom() | binary() | [atom() | binary() | [atom() | binary() | [any()] | char()] | char()]}) might have an unintended effect due to a possible race condition caused by its combination with the ets:lookup('files',File::atom() | binary() | [atom() | binary() | [atom() | binary() | [any()] | char()] | char()]) call in extract_translations.erl on line 148
+extract_translations.erl:152: The call ets:insert('files',{atom() | binary() | [atom() | [any()] | char()]}) might have an unintended effect due to a possible race condition caused by its combination with the ets:lookup('files',File::atom() | binary() | [atom() | [any()] | char()]) call in extract_translations.erl on line 148
extract_translations.erl:154: The call ets:insert('translations',{_,[]}) might have an unintended effect due to a possible race condition caused by its combination with the ets:lookup('translations',Str::any()) call in extract_translations.erl on line 126
diff --git a/lib/dialyzer/test/small_SUITE_data/results/flatten b/lib/dialyzer/test/small_SUITE_data/results/flatten
index 4571214e49..8aa44dd002 100644
--- a/lib/dialyzer/test/small_SUITE_data/results/flatten
+++ b/lib/dialyzer/test/small_SUITE_data/results/flatten
@@ -1,2 +1,2 @@
-flatten.erl:17: The call lists:flatten(nonempty_improper_list(atom() | binary() | [any()] | char(),atom())) will never return since it differs in the 1st argument from the success typing arguments: ([any()])
+flatten.erl:17: The call lists:flatten(nonempty_improper_list(atom() | [any()] | char(),atom())) will never return since it differs in the 1st argument from the success typing arguments: ([any()])
diff --git a/lib/dialyzer/test/small_SUITE_data/src/binary_lc_bug.erl b/lib/dialyzer/test/small_SUITE_data/src/binary_lc_bug.erl
new file mode 100644
index 0000000000..c1e82bfa59
--- /dev/null
+++ b/lib/dialyzer/test/small_SUITE_data/src/binary_lc_bug.erl
@@ -0,0 +1,8 @@
+-module(test).
+
+-export([bin_compr/0]).
+
+bin_compr() ->
+% [ 0 || {N, V} <- [{a, b}] ]. % Works ok
+ << <<>> || {A, B} <- [{a, b}] >>. % Complains
+% << <<>> || X <- [{a, b}] >>. % Works ok
diff --git a/lib/dialyzer/test/small_SUITE_data/src/codec_can.erl b/lib/dialyzer/test/small_SUITE_data/src/codec_can.erl
new file mode 100644
index 0000000000..8abf872b37
--- /dev/null
+++ b/lib/dialyzer/test/small_SUITE_data/src/codec_can.erl
@@ -0,0 +1,35 @@
+%%---------------------------------------------------------------------
+%% From: Peer Stritzinger
+%% Date: 1 May 2011
+%% Subject: Dialyzer v2.2.0 crash
+%%
+%% Binaries of the form <<_:N,_:_*M>> in specs resulted in a crash:
+%% dialyzer: Analysis failed with error: {{case_clause,8},
+%% [{erl_types,t_form_to_string,1},
+%% {erl_types,t_form_to_string,1},
+%% {dialyzer_contracts,contract_to_string_1,1},
+%% {dialyzer_contracts,extra_contract_warning,6},
+%% {dialyzer_contracts,picky_contract_check,7},
+%% because function erl_types:t_form_to_string/1 was not the inverse
+%% of erl_types:t_to_string/2.
+%%
+%% Fixed on the same date and send to OTP for inclusion.
+%%---------------------------------------------------------------------
+-module(codec_can).
+
+-export([recv/3, decode/1]).
+
+-record(can_pkt, {id, data :: binary(), timestamp}).
+
+-type can_pkt() :: #can_pkt{}.
+-type channel() :: atom() | pid() | {atom(),_}.
+
+-spec recv(<<_:64,_:_*8>>, fun((can_pkt()) -> R), channel()) -> R.
+recv(Packet, Fun, Chan) ->
+ #can_pkt{id = Can_id, data = Can_data} = P = decode(Packet),
+ Fun(P).
+
+-spec decode(<<_:64,_:_*8>>) -> #can_pkt{id::<<_:11>>,timestamp::char()}.
+decode(<<_:12, Len:4, Timestamp:16, 0:3, Id:11/bitstring, 0:18,
+ Data:Len/binary, _/binary>>) ->
+ #can_pkt{id = Id, data = Data, timestamp = Timestamp}.
diff --git a/lib/dialyzer/test/small_SUITE_data/src/list_to_bitstring.erl b/lib/dialyzer/test/small_SUITE_data/src/list_to_bitstring.erl
new file mode 100644
index 0000000000..2da708cb15
--- /dev/null
+++ b/lib/dialyzer/test/small_SUITE_data/src/list_to_bitstring.erl
@@ -0,0 +1,21 @@
+%%=====================================================================
+%% From: Ken Robinson
+%% Date: 28/04/2011, 17:26
+%%
+%% Program that produced borus "Function has no local return" warnings
+%% due to erlang:list_to_bitstring/1 having erroneous hard coded type
+%% information, namely accepting iolist() instead of bitstrlist().
+%% Fixed 29/04/2011.
+%%=====================================================================
+
+-module(list_to_bitstring).
+
+-export([l2bs/0, l2bs_ok/0]).
+
+%% This function was producing a warning
+l2bs() ->
+ erlang:list_to_bitstring([<<42>>, <<42:13>>]).
+
+%% while this one was ok.
+l2bs_ok() ->
+ erlang:list_to_bitstring([<<42>>, <<42,42>>]).
diff --git a/lib/dialyzer/test/small_SUITE_data/src/nowarnunused.erl b/lib/dialyzer/test/small_SUITE_data/src/nowarnunused.erl
new file mode 100644
index 0000000000..63daeee9e3
--- /dev/null
+++ b/lib/dialyzer/test/small_SUITE_data/src/nowarnunused.erl
@@ -0,0 +1,7 @@
+-module(nowarnunused).
+
+-compile({nowarn_unused_function, return_error/2}).
+
+-spec return_error(integer(), any()) -> no_return().
+return_error(Line, Message) ->
+ throw({error, {Line, ?MODULE, Message}}).
diff --git a/lib/dialyzer/vsn.mk b/lib/dialyzer/vsn.mk
index 53b6f8c553..10de07dfbb 100644
--- a/lib/dialyzer/vsn.mk
+++ b/lib/dialyzer/vsn.mk
@@ -1 +1 @@
-DIALYZER_VSN = 2.4.2
+DIALYZER_VSN = 2.4.3