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-rw-r--r--lib/dialyzer/src/dialyzer_dataflow.erl62
-rw-r--r--lib/dialyzer/test/Makefile1
-rw-r--r--lib/dialyzer/test/abstract_SUITE.erl102
-rw-r--r--lib/dialyzer/test/dialyzer_common.erl11
4 files changed, 147 insertions, 29 deletions
diff --git a/lib/dialyzer/src/dialyzer_dataflow.erl b/lib/dialyzer/src/dialyzer_dataflow.erl
index 9399789464..963c953447 100644
--- a/lib/dialyzer/src/dialyzer_dataflow.erl
+++ b/lib/dialyzer/src/dialyzer_dataflow.erl
@@ -978,12 +978,21 @@ handle_case(Tree, Map, State) ->
false -> State1
end,
Map2 = join_maps_begin(Map1),
- {MapList, State3, Type} =
+ {MapList, State3, Type, Warns} =
handle_clauses(Clauses, Arg, ArgType, ArgType, State2,
- [], Map2, [], []),
+ [], Map2, [], [], []),
+ %% Non-Erlang BEAM languages, such as Elixir, expand language constructs
+ %% into case statements. In that case, we do not want to warn on
+ %% individual clauses not matching unless none of them can.
+ SupressForced = is_compiler_generated(cerl:get_ann(Tree))
+ andalso not (t_is_none(Type)),
+ State4 = lists:foldl(fun({T,R,M,F}, S) ->
+ state__add_warning(
+ S,T,R,M,F andalso (not SupressForced))
+ end, State3, Warns),
Map3 = join_maps_end(MapList, Map2),
debug_pp_map(Map3),
- {State3, Map3, Type}
+ {State4, Map3, Type}
end.
%%----------------------------------------
@@ -1082,22 +1091,24 @@ handle_receive(Tree, Map, State) ->
RaceListSize + 1, State);
false -> State
end,
- {MapList, State2, ReceiveType} =
+ {MapList, State2, ReceiveType, Warns} =
handle_clauses(Clauses, ?no_arg, t_any(), t_any(), State1, [], Map,
- [], []),
+ [], [], []),
+ State3 = lists:foldl(fun({T,R,M,F}, S) -> state__add_warning(S,T,R,M,F) end,
+ State2, Warns),
Map1 = join_maps(MapList, Map),
- {State3, Map2, TimeoutType} = traverse(Timeout, Map1, State2),
- Opaques = State3#state.opaques,
+ {State4, Map2, TimeoutType} = traverse(Timeout, Map1, State3),
+ Opaques = State4#state.opaques,
case (t_is_atom(TimeoutType, Opaques) andalso
(t_atom_vals(TimeoutType, Opaques) =:= ['infinity'])) of
true ->
- {State3, Map2, ReceiveType};
+ {State4, Map2, ReceiveType};
false ->
Action = cerl:receive_action(Tree),
- {State4, Map3, ActionType} = traverse(Action, Map, State3),
+ {State5, Map3, ActionType} = traverse(Action, Map, State4),
Map4 = join_maps([Map3, Map1], Map),
Type = t_sup(ReceiveType, ActionType),
- {State4, Map4, Type}
+ {State5, Map4, Type}
end.
%%----------------------------------------
@@ -1245,7 +1256,7 @@ handle_tuple(Tree, Map, State) ->
%% Clauses
%%
handle_clauses([C|Left], Arg, ArgType, OrigArgType, State, CaseTypes, MapIn,
- Acc, ClauseAcc) ->
+ Acc, ClauseAcc, WarnAcc0) ->
IsRaceAnalysisEnabled = is_race_analysis_enabled(State),
State1 =
case IsRaceAnalysisEnabled of
@@ -1258,8 +1269,8 @@ handle_clauses([C|Left], Arg, ArgType, OrigArgType, State, CaseTypes, MapIn,
State);
false -> State
end,
- {State2, ClauseMap, BodyType, NewArgType} =
- do_clause(C, Arg, ArgType, OrigArgType, MapIn, State1),
+ {State2, ClauseMap, BodyType, NewArgType, WarnAcc} =
+ do_clause(C, Arg, ArgType, OrigArgType, MapIn, State1, WarnAcc0),
{NewClauseAcc, State3} =
case IsRaceAnalysisEnabled of
true ->
@@ -1277,9 +1288,9 @@ handle_clauses([C|Left], Arg, ArgType, OrigArgType, State, CaseTypes, MapIn,
false -> {[BodyType|CaseTypes], [ClauseMap|Acc]}
end,
handle_clauses(Left, Arg, NewArgType, OrigArgType, State3,
- NewCaseTypes, MapIn, NewAcc, NewClauseAcc);
+ NewCaseTypes, MapIn, NewAcc, NewClauseAcc, WarnAcc);
handle_clauses([], _Arg, _ArgType, _OrigArgType, State, CaseTypes, _MapIn, Acc,
- ClauseAcc) ->
+ ClauseAcc, WarnAcc) ->
State1 =
case is_race_analysis_enabled(State) of
true ->
@@ -1289,9 +1300,9 @@ handle_clauses([], _Arg, _ArgType, _OrigArgType, State, CaseTypes, _MapIn, Acc,
RaceListSize + 1, State);
false -> State
end,
- {lists:reverse(Acc), State1, t_sup(CaseTypes)}.
+ {lists:reverse(Acc), State1, t_sup(CaseTypes), WarnAcc}.
-do_clause(C, Arg, ArgType0, OrigArgType, Map, State) ->
+do_clause(C, Arg, ArgType0, OrigArgType, Map, State, Warns) ->
Pats = cerl:clause_pats(C),
Guard = cerl:clause_guard(C),
Body = cerl:clause_body(C),
@@ -1323,7 +1334,7 @@ do_clause(C, Arg, ArgType0, OrigArgType, Map, State) ->
[cerl_prettypr:format(C), format_type(ArgType0, State1)]),
case state__warning_mode(State1) of
false ->
- {State1, Map, t_none(), ArgType0};
+ {State1, Map, t_none(), ArgType0, Warns};
true ->
{Msg, Force} =
case t_is_none(ArgType0) of
@@ -1403,8 +1414,7 @@ do_clause(C, Arg, ArgType0, OrigArgType, Map, State) ->
{record_match, _} -> ?WARN_MATCHING;
{pattern_match_cov, _} -> ?WARN_MATCHING
end,
- {state__add_warning(State1, WarnType, C, Msg, Force),
- Map, t_none(), ArgType0}
+ {State1, Map, t_none(), ArgType0, [{WarnType, C, Msg, Force}|Warns]}
end;
{Map2, PatTypes} ->
Map3 =
@@ -1437,9 +1447,9 @@ do_clause(C, Arg, ArgType0, OrigArgType, Map, State) ->
false ->
{guard_fail_pat, [PatString, format_type(ArgType0, State1)]}
end,
- State2 =
+ Warn =
case Reason of
- none -> state__add_warning(State1, ?WARN_MATCHING, C, DefaultMsg);
+ none -> {?WARN_MATCHING, C, DefaultMsg, false};
{FailGuard, Msg} ->
case is_compiler_generated(cerl:get_ann(FailGuard)) of
false ->
@@ -1448,15 +1458,15 @@ do_clause(C, Arg, ArgType0, OrigArgType, Map, State) ->
{neg_guard_fail, _} -> ?WARN_MATCHING;
{opaque_guard, _} -> ?WARN_OPAQUE
end,
- state__add_warning(State1, WarnType, FailGuard, Msg);
+ {WarnType, FailGuard, Msg, false};
true ->
- state__add_warning(State1, ?WARN_MATCHING, C, Msg)
+ {?WARN_MATCHING, C, Msg, false}
end
end,
- {State2, Map, t_none(), NewArgType};
+ {State1, Map, t_none(), NewArgType, [Warn|Warns]};
Map4 ->
{RetState, RetMap, BodyType} = traverse(Body, Map4, State1),
- {RetState, RetMap, BodyType, NewArgType}
+ {RetState, RetMap, BodyType, NewArgType, Warns}
end
end.
diff --git a/lib/dialyzer/test/Makefile b/lib/dialyzer/test/Makefile
index f43e04dd59..0d8fba438c 100644
--- a/lib/dialyzer/test/Makefile
+++ b/lib/dialyzer/test/Makefile
@@ -12,6 +12,7 @@ AUXILIARY_FILES=\
dialyzer_common.erl\
file_utils.erl\
dialyzer_SUITE.erl\
+ abstract_SUITE.erl\
plt_SUITE.erl
# ----------------------------------------------------
diff --git a/lib/dialyzer/test/abstract_SUITE.erl b/lib/dialyzer/test/abstract_SUITE.erl
new file mode 100644
index 0000000000..269db3e836
--- /dev/null
+++ b/lib/dialyzer/test/abstract_SUITE.erl
@@ -0,0 +1,102 @@
+%% This suite contains cases that cannot be written
+%% in Erlang itself and must be done via the abstract
+%% format.
+
+-module(abstract_SUITE).
+
+-include_lib("common_test/include/ct.hrl").
+-include("dialyzer_test_constants.hrl").
+
+-export([suite/0, all/0, init_per_suite/0, init_per_suite/1]).
+-export([generated_case/1]).
+
+suite() ->
+ [{timetrap, {minutes, 1}}].
+all() ->
+ [generated_case].
+
+init_per_suite() ->
+ [{timetrap, ?plt_timeout}].
+init_per_suite(Config) ->
+ OutDir = ?config(priv_dir, Config),
+ case dialyzer_common:check_plt(OutDir) of
+ fail -> {skip, "Plt creation/check failed."};
+ ok -> [{dialyzer_options, []}|Config]
+ end.
+
+generated_case(Config) when is_list(Config) ->
+ %% Equivalent to:
+ %%
+ %% -module(foo).
+ %% -export(bar).
+ %% bar() ->
+ %% Arg = sample,
+ %% case Arg of
+ %% #{} -> map;
+ %% _ -> Arg:fn()
+ %% end.
+ %%
+ %% Except the case statement and its clauses are marked as autogenerated.
+ [] =
+ test([{attribute,1,module,foo},
+ {attribute,2,export,[{bar,0}]},
+ {function,3,bar,0,
+ [{clause,3,[],[],
+ [{match,4,{var,4,'Arg'},{atom,4,sample}},
+ {'case',[{location,5},{generated,true}],{var,5,'Arg'},
+ [{clause,[{location,6},{generated,true}],[{map,6,[]}],[],
+ [{atom,6,map}]},
+ {clause,[{location,7},{generated,true}],[{var,7,'_'}],[],
+ [{call,7,{remote,7,{var,7,'Arg'},{atom,7,fn}},[]}]}]}]}]}],
+ Config, [], []),
+ %% With the first clause not auto-generated
+ [{warn_matching,{_,6},_}] =
+ test([{attribute,1,module,foo},
+ {attribute,2,export,[{bar,0}]},
+ {function,3,bar,0,
+ [{clause,3,[],[],
+ [{match,4,{var,4,'Arg'},{atom,4,sample}},
+ {'case',[{location,5},{generated,true}],{var,5,'Arg'},
+ [{clause,6,[{map,6,[]}],[],
+ [{atom,6,map}]},
+ {clause,[{location,7},{generated,true}],[{var,7,'_'}],[],
+ [{call,7,{remote,7,{var,7,'Arg'},{atom,7,fn}},[]}]}]}]}]}],
+ Config, [], []),
+ %% With Arg set to [] so neither clause matches
+ [{warn_return_no_exit,{_,3},_},
+ {warn_matching,{_,6},_},
+ {warn_failing_call,{_,7},_}] =
+ test([{attribute,1,module,foo},
+ {attribute,2,export,[{bar,0}]},
+ {function,3,bar,0,
+ [{clause,3,[],[],
+ [{match,4,{var,4,'Arg'},{nil,4}},
+ {'case',[{location,5},{generated,true}],{var,5,'Arg'},
+ [{clause,[{location,6},{generated,true}],[{map,6,[]}],[],
+ [{atom,6,map}]},
+ {clause,[{location,7},{generated,true}],[{var,7,'_'}],[],
+ [{call,7,{remote,7,{var,7,'Arg'},{atom,7,fn}},[]}]}]}]}]}],
+ Config, [], []),
+ ok.
+
+test(Prog, Config, COpts, DOpts) ->
+ {ok, BeamFile} = compile(Config, Prog, COpts),
+ run_dialyzer(Config, succ_typings, [BeamFile], DOpts).
+
+compile(Config, Prog, CompileOpts) ->
+ OutDir = ?config(priv_dir, Config),
+ Opts = [{outdir, OutDir}, debug_info, return_errors | CompileOpts],
+ {ok, Module, Source} = compile:forms(Prog, Opts),
+ BeamFile = filename:join([OutDir, lists:concat([Module, ".beam"])]),
+ ok = file:write_file(BeamFile, Source),
+ {ok, BeamFile}.
+
+run_dialyzer(Config, Analysis, Files, Opts) ->
+ OutDir = ?config(priv_dir, Config),
+ PltFilename = dialyzer_common:plt_file(OutDir),
+ dialyzer:run([{analysis_type, Analysis},
+ {files, Files},
+ {init_plt, PltFilename},
+ {check_plt, false},
+ {from, byte_code} |
+ Opts]).
diff --git a/lib/dialyzer/test/dialyzer_common.erl b/lib/dialyzer/test/dialyzer_common.erl
index d2b1026c06..48083a2731 100644
--- a/lib/dialyzer/test/dialyzer_common.erl
+++ b/lib/dialyzer/test/dialyzer_common.erl
@@ -7,7 +7,7 @@
-module(dialyzer_common).
--export([check_plt/1, check/4, create_all_suites/0, new_tests/2]).
+-export([check_plt/1, check/4, create_all_suites/0, new_tests/2, plt_file/1]).
-include_lib("kernel/include/file.hrl").
@@ -39,7 +39,7 @@
check_plt(OutDir) ->
io:format("Checking plt:"),
- PltFilename = filename:join(OutDir, ?plt_filename),
+ PltFilename = plt_file(OutDir),
case file:read_file_info(PltFilename) of
{ok, _} -> dialyzer_check_plt(PltFilename);
{error, _ } ->
@@ -63,6 +63,11 @@ check_plt(OutDir) ->
end
end.
+-spec plt_file(string()) -> string().
+
+plt_file(OutDir) ->
+ filename:join(OutDir, ?plt_filename).
+
dialyzer_check_plt(PltFilename) ->
try dialyzer:run([{analysis_type, plt_check},
{init_plt, PltFilename}]) of
@@ -119,7 +124,7 @@ build_plt(PltFilename) ->
'same' | {differ, [term()]}.
check(TestCase, Opts, Dir, OutDir) ->
- PltFilename = filename:join(OutDir, ?plt_filename),
+ PltFilename = plt_file(OutDir),
SrcDir = filename:join(Dir, ?input_files_directory),
ResDir = filename:join(Dir, ?result_files_directory),
Filename = filename:join(SrcDir, atom_to_list(TestCase)),
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-01 02:12:02 +0000