diff options
| -rw-r--r-- | lib/dialyzer/src/dialyzer_typesig.erl | 12 | ||||
| -rw-r--r-- | lib/dialyzer/test/map_SUITE_data/results/map_anon_fun | 2 | ||||
| -rw-r--r-- | lib/dialyzer/test/map_SUITE_data/src/map_anon_fun.erl | 9 | ||||
| -rw-r--r-- | lib/hipe/cerl/erl_types.erl | 4 |
4 files changed, 22 insertions, 5 deletions
diff --git a/lib/dialyzer/src/dialyzer_typesig.erl b/lib/dialyzer/src/dialyzer_typesig.erl index c4d8f45447..d03326ec97 100644 --- a/lib/dialyzer/src/dialyzer_typesig.erl +++ b/lib/dialyzer/src/dialyzer_typesig.erl @@ -41,7 +41,7 @@ t_is_float/1, t_is_fun/1, t_is_integer/1, t_non_neg_integer/0, t_is_list/1, t_is_nil/1, t_is_none/1, t_is_number/1, - t_is_singleton/1, + t_is_singleton/1, t_is_none_or_unit/1, t_limit/2, t_list/0, t_list/1, t_list_elements/1, t_nonempty_list/1, t_maybe_improper_list/0, @@ -528,13 +528,14 @@ traverse(Tree, DefinedVars, State) -> false -> t_any(); true -> MT = t_inf(lookup_type(MapVar, Map), t_map()), - case t_is_none(MT) of + case t_is_none_or_unit(MT) of true -> t_none(); false -> DisjointFromKeyType = fun(ShadowKey) -> - t_is_none(t_inf(lookup_type(ShadowKey, Map), - KeyType)) + ST = t_inf(lookup_type(ShadowKey, Map), + KeyType), + t_is_none_or_unit(ST) end, case lists:all(DisjointFromKeyType, ShadowKeys) of true -> t_map_get(KeyType, MT); @@ -567,7 +568,8 @@ traverse(Tree, DefinedVars, State) -> case cerl:is_literal(OpTree) andalso cerl:concrete(OpTree) =:= exact of true -> - case t_is_none(t_inf(ShadowedKeys, KeyType)) of + ST = t_inf(ShadowedKeys, KeyType), + case t_is_none_or_unit(ST) of true -> t_map_put({KeyType, t_any()}, AccType); false -> diff --git a/lib/dialyzer/test/map_SUITE_data/results/map_anon_fun b/lib/dialyzer/test/map_SUITE_data/results/map_anon_fun new file mode 100644 index 0000000000..cfca5b1407 --- /dev/null +++ b/lib/dialyzer/test/map_SUITE_data/results/map_anon_fun @@ -0,0 +1,2 @@ + +map_anon_fun.erl:4: Function g/1 will never be called diff --git a/lib/dialyzer/test/map_SUITE_data/src/map_anon_fun.erl b/lib/dialyzer/test/map_SUITE_data/src/map_anon_fun.erl new file mode 100644 index 0000000000..e77016d68a --- /dev/null +++ b/lib/dialyzer/test/map_SUITE_data/src/map_anon_fun.erl @@ -0,0 +1,9 @@ +-module(map_anon_fun). + +%% Not exported. +g(A) -> + maps:map(fun F(K, {V, _C}) -> + F(K, V); + F(_K, _V) -> + #{ system => {A} } + end, #{}). diff --git a/lib/hipe/cerl/erl_types.erl b/lib/hipe/cerl/erl_types.erl index abb6c259f6..4e0f93212d 100644 --- a/lib/hipe/cerl/erl_types.erl +++ b/lib/hipe/cerl/erl_types.erl @@ -1877,6 +1877,7 @@ t_map_put(KV, Map, Opaques) -> %% Key and Value are *not* unopaqued, but the map is map_put(_, ?none, _) -> ?none; +map_put(_, ?unit, _) -> ?none; map_put({Key, Value}, ?map(Pairs,DefK,DefV), Opaques) -> case t_is_none_or_unit(Key) orelse t_is_none_or_unit(Value) of true -> ?none; @@ -1902,6 +1903,7 @@ t_map_update(KV, Map) -> -spec t_map_update({erl_type(), erl_type()}, erl_type(), opaques()) -> erl_type(). t_map_update(_, ?none, _) -> ?none; +t_map_update(_, ?unit, _) -> ?none; t_map_update(KV={Key, _}, M, Opaques) -> case t_is_subtype(t_atom('true'), t_map_is_key(Key, M, Opaques)) of false -> ?none; @@ -1922,6 +1924,7 @@ t_map_get(Key, Map, Opaques) -> end). map_get(_, ?none) -> ?none; +map_get(_, ?unit) -> ?none; map_get(Key, ?map(Pairs, DefK, DefV)) -> DefRes = case t_do_overlap(DefK, Key) of @@ -1957,6 +1960,7 @@ t_map_is_key(Key, Map, Opaques) -> end). map_is_key(_, ?none) -> ?none; +map_is_key(_, ?unit) -> ?none; map_is_key(Key, ?map(Pairs, DefK, _DefV)) -> case is_singleton_type(Key) of true -> |