diff options
| -rw-r--r-- | lib/dialyzer/src/dialyzer_dataflow.erl | 18 | ||||
| -rw-r--r-- | lib/dialyzer/test/opaque_SUITE_data/src/opaque/opaque_bug5.erl | 10 | ||||
| -rw-r--r-- | lib/dialyzer/test/small_SUITE_data/src/limit.erl | 20 | ||||
| -rw-r--r-- | lib/hipe/cerl/erl_bif_types.erl | 20 | ||||
| -rw-r--r-- | lib/hipe/cerl/erl_types.erl | 4 |
5 files changed, 64 insertions, 8 deletions
diff --git a/lib/dialyzer/src/dialyzer_dataflow.erl b/lib/dialyzer/src/dialyzer_dataflow.erl index 92aab68ad6..03005e689f 100644 --- a/lib/dialyzer/src/dialyzer_dataflow.erl +++ b/lib/dialyzer/src/dialyzer_dataflow.erl @@ -93,6 +93,8 @@ -define(TYPE_LIMIT, 3). +-define(BITS, 128). + -record(state, {callgraph :: dialyzer_callgraph:callgraph(), envs :: env_tab(), fun_tab :: fun_tab(), @@ -1610,10 +1612,18 @@ bind_bin_segs([Seg|Segs], BinType, Acc, Map, State) -> SizeVal = lists:max(List), Flags = cerl:concrete(cerl:bitstr_flags(Seg)), N = SizeVal * UnitVal, - case lists:member(signed, Flags) of - true -> t_from_range(-(1 bsl (N - 1)), 1 bsl (N - 1) - 1); - false -> t_from_range(0, 1 bsl N - 1) - end + case N >= ?BITS of + true -> + case lists:member(signed, Flags) of + true -> t_from_range(neg_inf, pos_inf); + false -> t_from_range(0, pos_inf) + end; + false -> + case lists:member(signed, Flags) of + true -> t_from_range(-(1 bsl (N - 1)), 1 bsl (N - 1) - 1); + false -> t_from_range(0, 1 bsl N - 1) + end + end end end, {Map2, [_]} = bind_pat_vars([Val], [ValConstr], [], Map1, State, false), diff --git a/lib/dialyzer/test/opaque_SUITE_data/src/opaque/opaque_bug5.erl b/lib/dialyzer/test/opaque_SUITE_data/src/opaque/opaque_bug5.erl new file mode 100644 index 0000000000..28d739de8e --- /dev/null +++ b/lib/dialyzer/test/opaque_SUITE_data/src/opaque/opaque_bug5.erl @@ -0,0 +1,10 @@ +%% Second arg of is_record call wasn't checked properly + +-module(opaque_bug5). + +-export([b/0]). + +b() -> + is_record(id({a}), id(a)). + +id(I) -> I. diff --git a/lib/dialyzer/test/small_SUITE_data/src/limit.erl b/lib/dialyzer/test/small_SUITE_data/src/limit.erl new file mode 100644 index 0000000000..97ee585b77 --- /dev/null +++ b/lib/dialyzer/test/small_SUITE_data/src/limit.erl @@ -0,0 +1,20 @@ +%% Misc cases where Dialyzer would fail with system_limit or crash + +-module(limit). + +-export([tu/0, big/1, b2/0]). + +tu() -> + erlang:make_tuple(1 bsl 24, def, [{5,e},{1,a},{3,c}]). + +big(<<Int:1152921504606846976/unit:128,0,_/binary>>) -> {5,Int}. + +b2() -> + Maxbig = maxbig(), + _ = bnot Maxbig, + ok. + +maxbig() -> + %% We assume that the maximum arity is (1 bsl 19) - 1. + Ws = erlang:system_info(wordsize), + (((1 bsl ((16777184 * (Ws div 4))-1)) - 1) bsl 1) + 1. diff --git a/lib/hipe/cerl/erl_bif_types.erl b/lib/hipe/cerl/erl_bif_types.erl index a460f16272..74e93bf098 100644 --- a/lib/hipe/cerl/erl_bif_types.erl +++ b/lib/hipe/cerl/erl_bif_types.erl @@ -2,7 +2,7 @@ %% %% %CopyrightBegin% %% -%% Copyright Ericsson AB 2003-2013. All Rights Reserved. +%% Copyright Ericsson AB 2003-2014. All Rights Reserved. %% %% The contents of this file are subject to the Erlang Public License, %% Version 1.1, (the "License"); you may not use this file except in @@ -1891,7 +1891,11 @@ infinity_add(neg_inf, _Number) -> neg_inf; infinity_add(_Number, pos_inf) -> pos_inf; infinity_add(_Number, neg_inf) -> neg_inf; infinity_add(Number1, Number2) when is_integer(Number1), is_integer(Number2) -> - Number1 + Number2. + try Number1 + Number2 + catch + error:system_limit when Number1 < 0 -> neg_inf; + error:system_limit -> pos_inf + end. infinity_mult(neg_inf, Number) -> Greater = infinity_geq(Number, 0), @@ -1902,7 +1906,13 @@ infinity_mult(pos_inf, Number) -> infinity_inv(infinity_mult(neg_inf, Number)); infinity_mult(Number, pos_inf) -> infinity_inv(infinity_mult(neg_inf, Number)); infinity_mult(Number, neg_inf) -> infinity_mult(neg_inf, Number); infinity_mult(Number1, Number2) when is_integer(Number1), is_integer(Number2)-> - Number1 * Number2. + try Number1 * Number2 + catch + error:system_limit -> + if (Number1 >= 0) =:= (Number2 >= 0) -> pos_inf; + true -> neg_inf + end + end. width({Min, Max}) -> infinity_max([width(Min), width(Max)]); width(pos_inf) -> pos_inf; @@ -2633,7 +2643,9 @@ opaque_args(M, F, A, Xs, Opaques) -> true -> case t_tuple_subtypes(X, Opaques) of unknown -> false; - List when length(List) >= 1 -> opaque_recargs(List, Y, Opaques) + List when length(List) >= 1 -> + (t_is_atom(Y, Opaques) andalso + opaque_recargs(List, Y, Opaques)) end; false -> t_has_opaque_subtype(X, Opaques) end]; diff --git a/lib/hipe/cerl/erl_types.erl b/lib/hipe/cerl/erl_types.erl index 0927c17b6b..4b2bec5fa8 100644 --- a/lib/hipe/cerl/erl_types.erl +++ b/lib/hipe/cerl/erl_types.erl @@ -262,6 +262,8 @@ -define(TAG_IMMED1_SIZE, 4). -define(BITS, (erlang:system_info(wordsize) * 8) - ?TAG_IMMED1_SIZE). +-define(MAX_TUPLE_SIZE, (1 bsl 10)). + %%----------------------------------------------------------------------------- %% Type tags and qualifiers %% @@ -1770,6 +1772,8 @@ t_tuple() -> -spec t_tuple(non_neg_integer() | [erl_type()]) -> erl_type(). +t_tuple(N) when is_integer(N), N > ?MAX_TUPLE_SIZE -> + t_tuple(); t_tuple(N) when is_integer(N) -> ?tuple(lists:duplicate(N, ?any), N, ?any); t_tuple(List) -> |