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-rw-r--r--lib/compiler/src/beam_block.erl4
-rw-r--r--lib/compiler/src/beam_validator.erl25
-rw-r--r--lib/compiler/test/map_SUITE.erl58
-rw-r--r--lib/crypto/src/crypto_ec_curves.erl12
-rw-r--r--lib/hipe/cerl/erl_types.erl82
5 files changed, 170 insertions, 11 deletions
diff --git a/lib/compiler/src/beam_block.erl b/lib/compiler/src/beam_block.erl
index 2def3de7f3..0321b1c07b 100644
--- a/lib/compiler/src/beam_block.erl
+++ b/lib/compiler/src/beam_block.erl
@@ -251,7 +251,9 @@ opt([{set,_,_,{line,_}}=Line1,
{set,[D2],[{integer,Idx2},Reg],{bif,element,{f,0}}}=I2|Is])
when Idx1 < Idx2, D1 =/= D2, D1 =/= Reg, D2 =/= Reg ->
opt([Line2,I2,Line1,I1|Is]);
-opt([{set,Ds0,Ss,Op}|Is0]) ->
+opt([{set,[_|_],_Ss,{get_map_elements,_F}}=I|Is]) ->
+ [I|opt(Is)];
+opt([{set,Ds0,Ss,Op}|Is0]) ->
{Ds,Is} = opt_moves(Ds0, Is0),
[{set,Ds,Ss,Op}|opt(Is)];
opt([{'%live',_,_}=I|Is]) ->
diff --git a/lib/compiler/src/beam_validator.erl b/lib/compiler/src/beam_validator.erl
index 942d69a756..6004f1974e 100644
--- a/lib/compiler/src/beam_validator.erl
+++ b/lib/compiler/src/beam_validator.erl
@@ -758,10 +758,20 @@ valfun_4(_, _) ->
verify_get_map(Fail, Src, List, Vst0) ->
assert_type(map, Src, Vst0),
- Vst1 = branch_state(Fail, Vst0),
+ Vst1 = foldl(fun(D, Vsti) ->
+ case is_reg_defined(D,Vsti) of
+ true -> set_type_reg(term,D,Vsti);
+ false -> Vsti
+ end
+ end, Vst0, extract_map_vals(List)),
+ Vst2 = branch_state(Fail, Vst1),
Keys = extract_map_keys(List),
assert_unique_map_keys(Keys),
- verify_get_map_pair(List,Vst0,Vst1).
+ verify_get_map_pair(List,Vst0,Vst2).
+
+extract_map_vals([_Key,Val|T]) ->
+ [Val|extract_map_vals(T)];
+extract_map_vals([]) -> [].
extract_map_keys([Key,_Val|T]) ->
[Key|extract_map_keys(T)];
@@ -1093,6 +1103,17 @@ set_catch_end({y,Y}, #vst{current=#st{y=Ys0}=St}=Vst) ->
Ys = gb_trees:update(Y, initialized, Ys0),
Vst#vst{current=St#st{y=Ys}}.
+
+is_reg_defined({x,_}=Reg, Vst) -> is_type_defined_x(Reg, Vst);
+is_reg_defined({y,_}=Reg, Vst) -> is_type_defined_y(Reg, Vst);
+is_reg_defined(V, #vst{}) -> error({not_a_register, V}).
+
+is_type_defined_x({x,X}, #vst{current=#st{x=Xs}}) ->
+ gb_trees:is_defined(X,Xs).
+
+is_type_defined_y({y,Y}, #vst{current=#st{y=Ys}}) ->
+ gb_trees:is_defined(Y,Ys).
+
assert_term(Src, Vst) ->
get_term_type(Src, Vst),
ok.
diff --git a/lib/compiler/test/map_SUITE.erl b/lib/compiler/test/map_SUITE.erl
index abc12a359d..411b15eebe 100644
--- a/lib/compiler/test/map_SUITE.erl
+++ b/lib/compiler/test/map_SUITE.erl
@@ -63,7 +63,10 @@
%% errors in 17.0-rc1
t_update_values/1,
t_expand_map_update/1,
- t_export/1
+ t_export/1,
+
+ %% errors in 18
+ t_register_corruption/1
]).
suite() -> [].
@@ -108,11 +111,13 @@ all() ->
t_build_and_match_nil,
t_build_and_match_structure,
-
%% errors in 17.0-rc1
t_update_values,
t_expand_map_update,
- t_export
+ t_export,
+
+ %% errors in 18
+ t_register_corruption
].
groups() -> [].
@@ -1827,6 +1832,53 @@ map_guard_sequence_mixed(K1,K2,M) ->
#{ K1 := 1, c := 6, K2 := 8, h := 3} -> 6
end.
+%% register corruption discovered in 18 due to
+%% get_map_elements might destroys registers when fail-label is taken.
+%% Only seen when patterns have two targets,
+%% specifically: we copy one register, and then jump.
+%% {test,is_map,{f,5},[{x,1}]}.
+%%
+%% {get_map_elements,{f,7},{x,1},{list,[{atom,a},{x,1},{atom,b},{x,2}]}}.
+%% %% if 'a' exists but not 'b' {x,1} is overwritten, jump {f,7}
+%%
+%% {move,{integer,1},{x,0}}.
+%% {call_only,3,{f,10}}.
+%%
+%% {label,7}.
+%% {get_map_elements,{f,8},{x,1},{list,[{atom,b},{x,2}]}}.
+%% %% {x,1} (src) is now corrupt
+%%
+%% {move,{x,0},{x,1}}.
+%% {move,{integer,2},{x,0}}.
+%% {call_only,3,{f,10}}.
+%%
+%% Only happens in beam_block opt_move pass with two destinations.
+
+t_register_corruption(Config) when is_list(Config) ->
+ M = #{a=> <<"value">>, c=>3},
+ {3,wanted,<<"value">>} = register_corruption_bar(M,wanted),
+ {3,wanted,<<"value">>} = register_corruption_foo(wanted,M),
+ ok.
+
+register_corruption_foo(A,#{a := V1, b := V2}) ->
+ register_corruption_dummy_call(1,V1,V2);
+register_corruption_foo(A,#{b := V}) ->
+ register_corruption_dummy_call(2,A,V);
+register_corruption_foo(A,#{a := V}) ->
+ register_corruption_dummy_call(3,A,V).
+
+register_corruption_bar(M,A) ->
+ case M of
+ #{a := V1, b := V2} ->
+ register_corruption_dummy_call(1,V1,V2);
+ #{b := V} ->
+ register_corruption_dummy_call(2,A,V);
+ #{a := V} ->
+ register_corruption_dummy_call(3,A,V)
+ end.
+
+
+register_corruption_dummy_call(A,B,C) -> {A,B,C}.
t_frequency_table(Config) when is_list(Config) ->
diff --git a/lib/crypto/src/crypto_ec_curves.erl b/lib/crypto/src/crypto_ec_curves.erl
index fe17643d96..002b03b80c 100644
--- a/lib/crypto/src/crypto_ec_curves.erl
+++ b/lib/crypto/src/crypto_ec_curves.erl
@@ -4,11 +4,13 @@
curves() ->
CryptoSupport = crypto:supports(),
- HasGF2m = proplists:get_bool(ec_gf2m, proplists:get_value(public_keys, CryptoSupport)),
- prime_curves() ++ characteristic_two_curves(HasGF2m).
+ PubKeys = proplists:get_value(public_keys, CryptoSupport),
+ HasEC = proplists:get_bool(ecdh, PubKeys),
+ HasGF2m = proplists:get_bool(ec_gf2m, PubKeys),
+ prime_curves(HasEC) ++ characteristic_two_curves(HasGF2m).
-prime_curves() ->
+prime_curves(true) ->
[secp112r1,secp112r2,secp128r1,secp128r2,secp160k1,secp160r1,secp160r2,
secp192r1,secp192k1,secp224k1,secp224r1,secp256k1,secp256r1,secp384r1,
secp521r1,prime192v1,prime192v2,prime192v3,prime239v1,prime239v2,prime239v3,
@@ -16,7 +18,9 @@ prime_curves() ->
brainpoolP160r1,brainpoolP160t1,brainpoolP192r1,brainpoolP192t1,
brainpoolP224r1,brainpoolP224t1,brainpoolP256r1,brainpoolP256t1,
brainpoolP320r1,brainpoolP320t1,brainpoolP384r1,brainpoolP384t1,
- brainpoolP512r1,brainpoolP512t1].
+ brainpoolP512r1,brainpoolP512t1];
+prime_curves(_) ->
+ [].
characteristic_two_curves(true) ->
[sect113r1,sect113r2,sect131r1,sect131r2,sect163k1,sect163r1,
diff --git a/lib/hipe/cerl/erl_types.erl b/lib/hipe/cerl/erl_types.erl
index 56ec757dbf..cd2d2fe207 100644
--- a/lib/hipe/cerl/erl_types.erl
+++ b/lib/hipe/cerl/erl_types.erl
@@ -2712,7 +2712,87 @@ is_compat_args([], []) -> true;
is_compat_args(_, _) -> false.
is_compat_arg(A, A) -> true;
-is_compat_arg(A1, A2) -> t_is_any(A1) orelse t_is_any(A2).
+is_compat_arg(A1, A2) ->
+ is_specialization(A1, A2) orelse is_specialization(A2, A1).
+
+-spec is_specialization(erl_type(), erl_type()) -> boolean().
+
+%% Returns true if the first argument is a specialization of the
+%% second argument in the sense that every type is a specialization of
+%% any(). For example, {_,_} is a specialization of any(), but not of
+%% tuple(). Does not handle variables, but any() and unions (sort of).
+
+is_specialization(_, ?any) -> true;
+is_specialization(?any, _) -> false;
+is_specialization(?function(Domain1, Range1), ?function(Domain2, Range2)) ->
+ (is_specialization(Domain1, Domain2) andalso
+ is_specialization(Range1, Range2));
+is_specialization(?list(Contents1, Termination1, Size1),
+ ?list(Contents2, Termination2, Size2)) ->
+ (Size1 =:= Size2 andalso
+ is_specialization(Contents1, Contents2) andalso
+ is_specialization(Termination1, Termination2));
+is_specialization(?product(Types1), ?product(Types2)) ->
+ specialization_list(Types1, Types2);
+is_specialization(?tuple(?any, ?any, ?any), ?tuple(_, _, _)) -> false;
+is_specialization(?tuple(_, _, _), ?tuple(?any, ?any, ?any)) -> false;
+is_specialization(?tuple(Elements1, Arity, _),
+ ?tuple(Elements2, Arity, _)) when Arity =/= ?any ->
+ specialization_list(Elements1, Elements2);
+is_specialization(?tuple_set([{Arity, List}]),
+ ?tuple(Elements2, Arity, _)) when Arity =/= ?any ->
+ specialization_list(sup_tuple_elements(List), Elements2);
+is_specialization(?tuple(Elements1, Arity, _),
+ ?tuple_set([{Arity, List}])) when Arity =/= ?any ->
+ specialization_list(Elements1, sup_tuple_elements(List));
+is_specialization(?tuple_set(List1), ?tuple_set(List2)) ->
+ try
+ specialization_list(lists:append([T || {_Arity, T} <- List1]),
+ lists:append([T || {_Arity, T} <- List2]))
+ catch _:_ -> false
+ end;
+is_specialization(?union(List1)=T1, ?union(List2)=T2) ->
+ case specialization_union2(T1, T2) of
+ {yes, Type1, Type2} -> is_specialization(Type1, Type2);
+ no -> specialization_list(List1, List2)
+ end;
+is_specialization(?union(List), T2) ->
+ case unify_union(List) of
+ {yes, Type} -> is_specialization(Type, T2);
+ no -> false
+ end;
+is_specialization(T1, ?union(List)) ->
+ case unify_union(List) of
+ {yes, Type} -> is_specialization(T1, Type);
+ no -> false
+ end;
+is_specialization(?opaque(_) = T1, T2) ->
+ is_specialization(t_opaque_structure(T1), T2);
+is_specialization(T1, ?opaque(_) = T2) ->
+ is_specialization(T1, t_opaque_structure(T2));
+is_specialization(?var(_), _) -> exit(error);
+is_specialization(_, ?var(_)) -> exit(error);
+is_specialization(T, T) -> true;
+is_specialization(?none, _) -> false;
+is_specialization(_, ?none) -> false;
+is_specialization(?unit, _) -> false;
+is_specialization(_, ?unit) -> false;
+is_specialization(#c{}, #c{}) -> false.
+
+specialization_list(L1, L2) ->
+ length(L1) =:= length(L2) andalso specialization_list1(L1, L2).
+
+specialization_list1([], []) -> true;
+specialization_list1([T1|L1], [T2|L2]) ->
+ is_specialization(T1, T2) andalso specialization_list1(L1, L2).
+
+specialization_union2(?union(List1)=T1, ?union(List2)=T2) ->
+ case {unify_union(List1), unify_union(List2)} of
+ {{yes, Type1}, {yes, Type2}} -> {yes, Type1, Type2};
+ {{yes, Type1}, no} -> {yes, Type1, T2};
+ {no, {yes, Type2}} -> {yes, T1, Type2};
+ {no, no} -> no
+ end.
-spec t_inf_lists([erl_type()], [erl_type()]) -> [erl_type()].
generated by cgit v1.2.3 (git 2.25.1) at 2024-10-06 09:42:31 +0000