diff options
| -rw-r--r-- | lib/dialyzer/src/dialyzer_dataflow.erl | 8 | ||||
| -rw-r--r-- | lib/dialyzer/test/small_SUITE_data/results/common_eunit | 2 | ||||
| -rw-r--r-- | lib/dialyzer/test/small_SUITE_data/src/common_eunit.erl | 121 |
3 files changed, 130 insertions, 1 deletions
diff --git a/lib/dialyzer/src/dialyzer_dataflow.erl b/lib/dialyzer/src/dialyzer_dataflow.erl index 2b70c372de..df411342cb 100644 --- a/lib/dialyzer/src/dialyzer_dataflow.erl +++ b/lib/dialyzer/src/dialyzer_dataflow.erl @@ -554,7 +554,13 @@ handle_apply(Tree, Map, State) -> {State3, enter_type(Op, OpType1, Map2), t_none()}; false -> Map3 = enter_type_lists(Args, NewArgs, Map2), - {State2, enter_type(Op, OpType1, Map3), t_fun_range(OpType1)} + Range0 = t_fun_range(OpType1), + Range = + case t_is_unit(Range0) of + true -> t_none(); + false -> Range0 + end, + {State2, enter_type(Op, OpType1, Map3), Range} end end; true -> diff --git a/lib/dialyzer/test/small_SUITE_data/results/common_eunit b/lib/dialyzer/test/small_SUITE_data/results/common_eunit new file mode 100644 index 0000000000..bb5fd1c9ac --- /dev/null +++ b/lib/dialyzer/test/small_SUITE_data/results/common_eunit @@ -0,0 +1,2 @@ + +common_eunit.erl:57: The created fun has no local return diff --git a/lib/dialyzer/test/small_SUITE_data/src/common_eunit.erl b/lib/dialyzer/test/small_SUITE_data/src/common_eunit.erl new file mode 100644 index 0000000000..bca390068e --- /dev/null +++ b/lib/dialyzer/test/small_SUITE_data/src/common_eunit.erl @@ -0,0 +1,121 @@ +%%===================================================================== +%% Program with an erroneous type declaration that caused dialyzer to +%% go into an infinite loop. There are some comments that explain the +%% symptoms and the culprit: the return of test_fun() is erroneous and +%% its type should read +%% fun((config()) -> test_rep() | [test_rep()]) +%% instead. But this should not throw dialyzer into an infinite loop. +%% This concerned dialyzer in R14B02 (and probably prior). +%%===================================================================== +-module(common_eunit). + +-export([expand_cases/2]). + +-type test_name() :: atom() | {'group', atom()}. + +-type test_rep() :: {{atom(), atom(), arity()}, fun()} + | {'setup', fun(), fun()} + | {'setup', fun(), fun(), fun()} + | {atom(), test_rep()} + | {atom(), term(), test_rep()}. + +-type config() :: [proplists:property()]. + +-type control() :: tuple() | atom(). + +%% The combination of the following type and the (erroneous) spec for +%% expand_cases/2 is the reason for the infinite loop in dialyzer. +-type test_fun() :: fun((config()) -> test_rep()). + +%% If one comments out this spec the infinite loop disappears. +-spec expand_cases(atom(), test_name() | [test_name()]) -> test_fun(). +expand_cases(Module, Cases) -> + if is_list(Cases) -> + TestFuns = [expand_case(Module, Case) || Case <- Cases], + fun(Config) -> [F(Config) || F <- TestFuns] end; + is_atom(Cases); is_tuple(Cases) -> + expand_cases(Module, [Cases]) + end. + +-spec expand_case(atom(), test_name()) -> test_fun(). +expand_case(Module, CaseName) when is_atom(CaseName) -> + TestFun = fun(Config) -> + {{Module, CaseName, 1}, + fun() -> apply(Module, CaseName, [Config]) end} + end, + setup_wrapper(Module, TestFun, {init_per_testcase, [CaseName]}, + {end_per_testcase, [CaseName]}); +expand_case(Module, {group, GroupName}) -> + {Control, Cases} = group_specification(Module, GroupName), + TestFun = control_wrapper(Control, expand_cases(Module, Cases)), + setup_wrapper(Module, TestFun, {init_per_group, [GroupName]}, + {end_per_group, [GroupName]}). + +-spec control_wrapper([control()], test_fun()) -> test_fun(). +control_wrapper([Control|T], TestFun0) -> + TestFun1 = control_wrapper(T, TestFun0), + fun(Config) -> + case Control of + parallel -> + {inparallel, TestFun1(Config)}; + sequence -> + {inorder, TestFun1(Config)}; + {timetrap, Time} -> + Seconds = case Time of + {hours, Hs} -> Hs * 60 * 60; + {minutes, Ms} -> Ms * 60; + {seconds, Ss} -> Ss; + MSs -> MSs / 1000 + end, + {timeout, Seconds, TestFun1(Config)}; + C when is_atom(C) -> + {C, TestFun1(Config)}; + {C, Arg} -> + {C, Arg, TestFun1(Config)} + end + end; +control_wrapper([], TestFun) -> + TestFun. + +-spec setup_wrapper(atom(), test_fun(), Callback, Callback) -> test_fun() + when Callback :: {atom(), list()}. +setup_wrapper(Module, TestFun, {Setup, SA}, {Cleanup, CA}) -> + case erlang:function_exported(Module, Setup, length(SA) + 1) of + true -> + case erlang:function_exported(Module, Cleanup, length(CA) + 1) of + true -> + fun(Config0) -> + {setup, + fun() -> + apply(Module, Setup, SA ++ [Config0]) + end, + fun(Config1) -> + apply(Module, Cleanup, CA ++ [Config1]) + end, + TestFun} + end; + false -> + fun(Config) -> + {setup, + fun() -> + apply(Module, Setup, SA ++ [Config]) + end, + TestFun} + end + end; + false -> + TestFun + end. + +-spec group_specification(atom(), atom()) -> {[control()], [test_name()]}. +group_specification(Module, GroupName) -> + case lists:keyfind(GroupName, 1, Module:groups()) of + {_, Control, Cases} when is_list(Control), is_list(Cases) -> + {Control, Cases}; + {_, Cases} when is_list(Cases) -> + {[], Cases}; + false -> + exit({missing_group, GroupName}); + _ -> + exit({bad_group_spec, GroupName}) + end. |