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-rw-r--r--erts/emulator/beam/bif.c19
-rw-r--r--erts/emulator/beam/erl_term.c2
-rw-r--r--erts/emulator/beam/erl_term.h9
-rw-r--r--erts/emulator/test/tuple_SUITE.erl260
4 files changed, 164 insertions, 126 deletions
diff --git a/erts/emulator/beam/bif.c b/erts/emulator/beam/bif.c
index 98dc9a3902..c4ff4fe982 100644
--- a/erts/emulator/beam/bif.c
+++ b/erts/emulator/beam/bif.c
@@ -2421,9 +2421,7 @@ BIF_RETTYPE setelement_3(BIF_ALIST_3)
/* copy the tuple */
resp = hp;
- while (size--) { /* XXX use memcpy? */
- *hp++ = *ptr++;
- }
+ sys_memcpy(hp, ptr, sizeof(Eterm)*size);
resp[ix] = BIF_ARG_3;
BIF_RET(make_tuple(resp));
}
@@ -2436,7 +2434,7 @@ BIF_RETTYPE make_tuple_2(BIF_ALIST_2)
Eterm* hp;
Eterm res;
- if (is_not_small(BIF_ARG_1) || (n = signed_val(BIF_ARG_1)) < 0) {
+ if (is_not_small(BIF_ARG_1) || (n = signed_val(BIF_ARG_1)) < 0 || n > ERTS_MAX_TUPLE_SIZE) {
BIF_ERROR(BIF_P, BADARG);
}
hp = HAlloc(BIF_P, n+1);
@@ -2457,7 +2455,7 @@ BIF_RETTYPE make_tuple_3(BIF_ALIST_3)
Eterm list = BIF_ARG_3;
Eterm* tup;
- if (is_not_small(BIF_ARG_1) || (n = signed_val(BIF_ARG_1)) < 0) {
+ if (is_not_small(BIF_ARG_1) || (n = signed_val(BIF_ARG_1)) < 0 || n > ERTS_MAX_TUPLE_SIZE) {
error:
BIF_ERROR(BIF_P, BADARG);
}
@@ -2509,11 +2507,16 @@ BIF_RETTYPE append_element_2(BIF_ALIST_2)
Eterm res;
if (is_not_tuple(BIF_ARG_1)) {
+ error:
BIF_ERROR(BIF_P, BADARG);
}
- ptr = tuple_val(BIF_ARG_1);
+ ptr = tuple_val(BIF_ARG_1);
arity = arityval(*ptr);
- hp = HAlloc(BIF_P, arity + 2);
+
+ if (arity + 1 > ERTS_MAX_TUPLE_SIZE)
+ goto error;
+
+ hp = HAlloc(BIF_P, arity + 2);
res = make_tuple(hp);
*hp = make_arityval(arity+1);
while (arity--) {
@@ -3097,7 +3100,7 @@ BIF_RETTYPE list_to_tuple_1(BIF_ALIST_1)
Eterm* hp;
int len;
- if ((len = list_length(list)) < 0) {
+ if ((len = list_length(list)) < 0 || len > ERTS_MAX_TUPLE_SIZE) {
BIF_ERROR(BIF_P, BADARG);
}
diff --git a/erts/emulator/beam/erl_term.c b/erts/emulator/beam/erl_term.c
index 6a04c6fc0b..4587cd84d1 100644
--- a/erts/emulator/beam/erl_term.c
+++ b/erts/emulator/beam/erl_term.c
@@ -133,7 +133,7 @@ ET_DEFINE_CHECKED(Uint,unsigned_val,Eterm,is_small);
ET_DEFINE_CHECKED(Sint,signed_val,Eterm,is_small);
ET_DEFINE_CHECKED(Uint,atom_val,Eterm,is_atom);
ET_DEFINE_CHECKED(Uint,header_arity,Eterm,is_header);
-ET_DEFINE_CHECKED(Uint,arityval,Eterm,is_arity_value);
+ET_DEFINE_CHECKED(Uint,arityval,Eterm,is_sane_arity_value);
ET_DEFINE_CHECKED(Uint,thing_arityval,Eterm,is_thing);
ET_DEFINE_CHECKED(Uint,thing_subtag,Eterm,is_thing);
ET_DEFINE_CHECKED(Eterm*,binary_val,Wterm,is_binary);
diff --git a/erts/emulator/beam/erl_term.h b/erts/emulator/beam/erl_term.h
index bc4c3a09a0..fb3ef9cd6c 100644
--- a/erts/emulator/beam/erl_term.h
+++ b/erts/emulator/beam/erl_term.h
@@ -300,8 +300,17 @@ _ET_DECLARE_CHECKED(Uint,header_arity,Eterm)
#define header_arity(x) _ET_APPLY(header_arity,(x))
/* arityval access methods */
+/* Erlang Spec. 4.7.3 defines max arity to 65535
+ * we will however enforce max arity of 16777215 (24 bits)
+ * (checked in bifs and asserted in debug)
+ */
+#define MAX_ARITYVAL ((((Uint)1) << 24) - 1)
+#define ERTS_MAX_TUPLE_SIZE MAX_ARITYVAL
+
#define make_arityval(sz) _make_header((sz),_TAG_HEADER_ARITYVAL)
#define is_arity_value(x) (((x) & _TAG_HEADER_MASK) == _TAG_HEADER_ARITYVAL)
+#define is_sane_arity_value(x) ((((x) & _TAG_HEADER_MASK) == _TAG_HEADER_ARITYVAL) && \
+ (((x) >> _HEADER_ARITY_OFFS) <= MAX_ARITYVAL))
#define is_not_arity_value(x) (!is_arity_value((x)))
#define _unchecked_arityval(x) _unchecked_header_arity((x))
_ET_DECLARE_CHECKED(Uint,arityval,Eterm)
diff --git a/erts/emulator/test/tuple_SUITE.erl b/erts/emulator/test/tuple_SUITE.erl
index bfc3910742..978d96a110 100644
--- a/erts/emulator/test/tuple_SUITE.erl
+++ b/erts/emulator/test/tuple_SUITE.erl
@@ -60,40 +60,40 @@ end_per_group(_GroupName, Config) ->
build_and_match(Config) when is_list(Config) ->
- ?line {} = id({}),
- ?line {1} = id({1}),
- ?line {1, 2} = id({1, 2}),
- ?line {1, 2, 3} = id({1, 2, 3}),
- ?line {1, 2, 3, 4} = id({1, 2, 3, 4}),
- ?line {1, 2, 3, 4, 5} = id({1, 2, 3, 4, 5}),
- ?line {1, 2, 3, 4, 5, 6} = id({1, 2, 3, 4, 5, 6}),
- ?line {1, 2, 3, 4, 5, 6} = id({1, 2, 3, 4, 5, 6}),
- ?line {1, 2, 3, 4, 5, 6, 7} = id({1, 2, 3, 4, 5, 6, 7}),
- ?line {1, 2, 3, 4, 5, 6, 7, 8} = id({1, 2, 3, 4, 5, 6, 7, 8}),
+ {} = id({}),
+ {1} = id({1}),
+ {1, 2} = id({1, 2}),
+ {1, 2, 3} = id({1, 2, 3}),
+ {1, 2, 3, 4} = id({1, 2, 3, 4}),
+ {1, 2, 3, 4, 5} = id({1, 2, 3, 4, 5}),
+ {1, 2, 3, 4, 5, 6} = id({1, 2, 3, 4, 5, 6}),
+ {1, 2, 3, 4, 5, 6} = id({1, 2, 3, 4, 5, 6}),
+ {1, 2, 3, 4, 5, 6, 7} = id({1, 2, 3, 4, 5, 6, 7}),
+ {1, 2, 3, 4, 5, 6, 7, 8} = id({1, 2, 3, 4, 5, 6, 7, 8}),
ok.
%% Tests size(Tuple).
t_size(Config) when is_list(Config) ->
- ?line 0 = size({}),
- ?line 1 = size({a}),
- ?line 1 = size({{a}}),
- ?line 2 = size({{a}, {b}}),
- ?line 3 = size({1, 2, 3}),
+ 0 = size({}),
+ 1 = size({a}),
+ 1 = size({{a}}),
+ 2 = size({{a}, {b}}),
+ 3 = size({1, 2, 3}),
ok.
t_tuple_size(Config) when is_list(Config) ->
- ?line 0 = tuple_size(id({})),
- ?line 1 = tuple_size(id({a})),
- ?line 1 = tuple_size(id({{a}})),
- ?line 2 = tuple_size(id({{a},{b}})),
- ?line 3 = tuple_size(id({1,2,3})),
+ 0 = tuple_size(id({})),
+ 1 = tuple_size(id({a})),
+ 1 = tuple_size(id({{a}})),
+ 2 = tuple_size(id({{a},{b}})),
+ 3 = tuple_size(id({1,2,3})),
%% Error cases.
- ?line {'EXIT',{badarg,_}} = (catch tuple_size([])),
- ?line {'EXIT',{badarg,_}} = (catch tuple_size(<<1,2,3>>)),
- ?line error = ludicrous_tuple_size({a,b,c}),
- ?line error = ludicrous_tuple_size([a,b,c]),
+ {'EXIT',{badarg,_}} = (catch tuple_size([])),
+ {'EXIT',{badarg,_}} = (catch tuple_size(<<1,2,3>>)),
+ error = ludicrous_tuple_size({a,b,c}),
+ error = ludicrous_tuple_size([a,b,c]),
ok.
@@ -104,44 +104,44 @@ ludicrous_tuple_size(_) -> error.
%% Tests element/2.
t_element(Config) when is_list(Config) ->
- ?line a = element(1, {a}),
- ?line a = element(1, {a, b}),
+ a = element(1, {a}),
+ a = element(1, {a, b}),
- ?line List = lists:seq(1, 4096),
- ?line Tuple = list_to_tuple(lists:seq(1, 4096)),
- ?line get_elements(List, Tuple, 1),
+ List = lists:seq(1, 4096),
+ Tuple = list_to_tuple(lists:seq(1, 4096)),
+ get_elements(List, Tuple, 1),
- ?line {'EXIT', {badarg, _}} = (catch element(0, id({a,b}))),
- ?line {'EXIT', {badarg, _}} = (catch element(3, id({a,b}))),
- ?line {'EXIT', {badarg, _}} = (catch element(1, id({}))),
- ?line {'EXIT', {badarg, _}} = (catch element(1, id([a,b]))),
- ?line {'EXIT', {badarg, _}} = (catch element(1, id(42))),
- ?line {'EXIT', {badarg, _}} = (catch element(id(1.5), id({a,b}))),
+ {'EXIT', {badarg, _}} = (catch element(0, id({a,b}))),
+ {'EXIT', {badarg, _}} = (catch element(3, id({a,b}))),
+ {'EXIT', {badarg, _}} = (catch element(1, id({}))),
+ {'EXIT', {badarg, _}} = (catch element(1, id([a,b]))),
+ {'EXIT', {badarg, _}} = (catch element(1, id(42))),
+ {'EXIT', {badarg, _}} = (catch element(id(1.5), id({a,b}))),
ok.
get_elements([Element|Rest], Tuple, Pos) ->
- ?line Element = element(Pos, Tuple),
- ?line get_elements(Rest, Tuple, Pos+1);
+ Element = element(Pos, Tuple),
+ get_elements(Rest, Tuple, Pos+1);
get_elements([], _Tuple, _Pos) ->
ok.
%% Tests set_element/3.
t_setelement(Config) when is_list(Config) ->
- ?line {x} = setelement(1, id({1}), x),
- ?line {x,2} = setelement(1, id({1,2}), x),
- ?line {1,x} = setelement(2, id({1,2}), x),
+ {x} = setelement(1, id({1}), x),
+ {x,2} = setelement(1, id({1,2}), x),
+ {1,x} = setelement(2, id({1,2}), x),
- ?line Tuple = list_to_tuple(lists:duplicate(2048, x)),
- ?line NewTuple = set_all_elements(Tuple, 1),
- ?line NewTuple = list_to_tuple(lists:seq(1+7, 2048+7)),
+ Tuple = list_to_tuple(lists:duplicate(2048, x)),
+ NewTuple = set_all_elements(Tuple, 1),
+ NewTuple = list_to_tuple(lists:seq(1+7, 2048+7)),
- ?line {'EXIT', {badarg, _}} = (catch setelement(0, {a, b}, x)),
- ?line {'EXIT', {badarg, _}} = (catch setelement(3, {a, b}, x)),
- ?line {'EXIT', {badarg, _}} = (catch setelement(1, {}, x)),
- ?line {'EXIT', {badarg, _}} = (catch setelement(1, [a, b], x)),
- ?line {'EXIT', {badarg, _}} = (catch setelement(1.5, {a, b}, x)),
+ {'EXIT', {badarg, _}} = (catch setelement(0, {a, b}, x)),
+ {'EXIT', {badarg, _}} = (catch setelement(3, {a, b}, x)),
+ {'EXIT', {badarg, _}} = (catch setelement(1, {}, x)),
+ {'EXIT', {badarg, _}} = (catch setelement(1, [a, b], x)),
+ {'EXIT', {badarg, _}} = (catch setelement(1.5, {a, b}, x)),
%% Nested setelement with literals.
AnotherTuple = id({0,0,a,b,c}),
@@ -159,52 +159,68 @@ set_all_elements(Tuple, Pos) when Pos > size(Tuple) ->
%% Tests list_to_tuple/1.
t_list_to_tuple(Config) when is_list(Config) ->
- ?line {} = list_to_tuple([]),
- ?line {a} = list_to_tuple([a]),
- ?line {a, b} = list_to_tuple([a, b]),
- ?line {a, b, c} = list_to_tuple([a, b, c]),
- ?line {a, b, c, d} = list_to_tuple([a, b, c, d]),
- ?line {a, b, c, d, e} = list_to_tuple([a, b, c, d, e]),
-
- ?line Size = 4096,
- ?line Tuple = list_to_tuple(lists:seq(1, Size)),
- ?line Size = size(Tuple),
-
- ?line {'EXIT', {badarg, _}} = (catch list_to_tuple(id({a,b}))),
- ?line {'EXIT', {badarg, _}} = (catch list_to_tuple(id([a|b]))),
- ?line {'EXIT', {badarg, _}} = (catch list_to_tuple(id([a|b]))),
-
+ {} = list_to_tuple([]),
+ {a} = list_to_tuple([a]),
+ {a, b} = list_to_tuple([a, b]),
+ {a, b, c} = list_to_tuple([a, b, c]),
+ {a, b, c, d} = list_to_tuple([a, b, c, d]),
+ {a, b, c, d, e} = list_to_tuple([a, b, c, d, e]),
+
+ Size = 4096,
+ Tuple = list_to_tuple(lists:seq(1, Size)),
+ Size = size(Tuple),
+
+ {'EXIT', {badarg, _}} = (catch list_to_tuple(id({a,b}))),
+ {'EXIT', {badarg, _}} = (catch list_to_tuple(id([a|b]))),
+ {'EXIT', {badarg, _}} = (catch list_to_tuple(id([a|b]))),
+
+ % test upper boundry, 16777215 elements
+ MaxSize = 1 bsl 24 - 1,
+ MaxTuple = list_to_tuple(lists:seq(1, MaxSize)),
+ MaxSize = size(MaxTuple),
+
+ {'EXIT', {badarg,_}} = (catch list_to_tuple(lists:seq(1, 1 bsl 24))),
ok.
%% Tests tuple_to_list/1.
t_tuple_to_list(Config) when is_list(Config) ->
- ?line [] = tuple_to_list({}),
- ?line [a] = tuple_to_list({a}),
- ?line [a, b] = tuple_to_list({a, b}),
- ?line [a, b, c] = tuple_to_list({a, b, c}),
- ?line [a, b, c, d] = tuple_to_list({a, b, c, d}),
- ?line [a, b, c, d] = tuple_to_list({a, b, c, d}),
-
- ?line Size = 4096,
- ?line List = lists:seq(1, Size),
- ?line Tuple = list_to_tuple(List),
- ?line Size = size(Tuple),
- ?line List = tuple_to_list(Tuple),
-
- ?line {'EXIT', {badarg,_}} = (catch tuple_to_list(id(a))),
- ?line {'EXIT', {badarg,_}} = (catch tuple_to_list(id(42))),
+ [] = tuple_to_list({}),
+ [a] = tuple_to_list({a}),
+ [a, b] = tuple_to_list({a, b}),
+ [a, b, c] = tuple_to_list({a, b, c}),
+ [a, b, c, d] = tuple_to_list({a, b, c, d}),
+ [a, b, c, d] = tuple_to_list({a, b, c, d}),
+
+ Size = 4096,
+ List = lists:seq(1, Size),
+ Tuple = list_to_tuple(List),
+ Size = size(Tuple),
+ List = tuple_to_list(Tuple),
+
+ {'EXIT', {badarg,_}} = (catch tuple_to_list(id(a))),
+ {'EXIT', {badarg,_}} = (catch tuple_to_list(id(42))),
ok.
%% Tests the make_tuple/2 BIF.
t_make_tuple_2(Config) when is_list(Config) ->
- ?line t_make_tuple1([]),
- ?line t_make_tuple1(42),
- ?line t_make_tuple1(a),
- ?line t_make_tuple1({}),
- ?line t_make_tuple1({a}),
- ?line t_make_tuple1(erlang:make_tuple(400, [])),
+ t_make_tuple1([]),
+ t_make_tuple1(42),
+ t_make_tuple1(a),
+ t_make_tuple1({}),
+ t_make_tuple1({a}),
+ t_make_tuple1(erlang:make_tuple(400, [])),
+
+ % test upper boundry, 16777215 elements
+ t_make_tuple(1 bsl 24 - 1, a),
+ {'EXIT', {badarg,_}} = (catch erlang:make_tuple(1 bsl 24, a)),
+
+ {'EXIT', {badarg,_}} = (catch erlang:make_tuple(-1, a)),
+ % 26 bits is the total header arity room (for now)
+ {'EXIT', {badarg,_}} = (catch erlang:make_tuple(1 bsl 26 + 3, a)),
+ % bignum
+ {'EXIT', {badarg,_}} = (catch erlang:make_tuple(1 bsl 65 + 3, a)),
ok.
t_make_tuple1(Element) ->
@@ -222,29 +238,39 @@ t_make_tuple(Size, Element) ->
%% Tests the erlang:make_tuple/3 BIF.
t_make_tuple_3(Config) when is_list(Config) ->
- ?line {} = erlang:make_tuple(0, def, []),
- ?line {def} = erlang:make_tuple(1, def, []),
- ?line {a} = erlang:make_tuple(1, def, [{1,a}]),
- ?line {a,def,c,def,e} = erlang:make_tuple(5, def, [{5,e},{1,a},{3,c}]),
- ?line {a,def,c,def,e} = erlang:make_tuple(5, def,
- [{1,blurf},{5,e},{3,blurf},
- {1,a},{3,c}]),
+ {} = erlang:make_tuple(0, def, []),
+ {def} = erlang:make_tuple(1, def, []),
+ {a} = erlang:make_tuple(1, def, [{1,a}]),
+
+ {a,def,c,def,e} = erlang:make_tuple(5, def, [{5,e},{1,a},{3,c}]),
+ {a,def,c,def,e} = erlang:make_tuple(5, def, [{1,blurf},{5,e},{3,blurf},{1,a},{3,c}]),
+ MaxSize = 1 bsl 16 - 1,
+ MaxTuple = erlang:make_tuple(MaxSize, def, [{1,blurf},{5,e},{3,blurf},{1,a},{3,c}]),
+ MaxSize = size(MaxTuple),
%% Error cases.
- ?line {'EXIT',{badarg,_}} = (catch erlang:make_tuple(0, def, [{1,a}])),
- ?line {'EXIT',{badarg,_}} = (catch erlang:make_tuple(5, def, [{-1,a}])),
- ?line {'EXIT',{badarg,_}} = (catch erlang:make_tuple(5, def, [{0,a}])),
- ?line {'EXIT',{badarg,_}} = (catch erlang:make_tuple(5, def, [{6,z}])),
- ?line {'EXIT',{badarg,_}} = (catch erlang:make_tuple(a, def, [{6,z}])),
- ?line {'EXIT',{badarg,_}} = (catch erlang:make_tuple(5, def, [{1,a}|b])),
- ?line {'EXIT',{badarg,_}} = (catch erlang:make_tuple(5, def, [42])),
- ?line {'EXIT',{badarg,_}} = (catch erlang:make_tuple(5, def, [[a,b,c]])),
- ?line {'EXIT',{badarg,_}} = (catch erlang:make_tuple(5, def, non_list)),
+ {'EXIT',{badarg,_}} = (catch erlang:make_tuple(0, def, [{1,a}])),
+ {'EXIT',{badarg,_}} = (catch erlang:make_tuple(5, def, [{-1,a}])),
+ {'EXIT',{badarg,_}} = (catch erlang:make_tuple(5, def, [{0,a}])),
+ {'EXIT',{badarg,_}} = (catch erlang:make_tuple(5, def, [{6,z}])),
+ {'EXIT',{badarg,_}} = (catch erlang:make_tuple(a, def, [{6,z}])),
+ {'EXIT',{badarg,_}} = (catch erlang:make_tuple(5, def, [{1,a}|b])),
+ {'EXIT',{badarg,_}} = (catch erlang:make_tuple(5, def, [42])),
+ {'EXIT',{badarg,_}} = (catch erlang:make_tuple(5, def, [[a,b,c]])),
+ {'EXIT',{badarg,_}} = (catch erlang:make_tuple(5, def, non_list)),
+ {'EXIT',{badarg,_}} = (catch erlang:make_tuple(1 bsl 24, def, [{5,e},{1,a},{3,c}])),
+
ok.
%% Tests the append_element/2 BIF.
t_append_element(Config) when is_list(Config) ->
- t_append_element({}, 2048, 2048).
+ ok = t_append_element({}, 2048, 2048),
+
+ % test upper boundry, 16777215 elements
+ MaxSize = 1 bsl 24 - 1,
+ MaxTuple = list_to_tuple(lists:seq(1, MaxSize)),
+ {'EXIT',{badarg,_}} = (catch erlang:append_element(MaxTuple, a)),
+ ok.
t_append_element(_Tuple, 0, _High) -> ok;
t_append_element(Tuple, N, High) ->
@@ -261,7 +287,7 @@ verify_seq([High|T], High, Lower) ->
%% (This is known to crash earlier versions of BEAM.)
tuple_with_case(Config) when is_list(Config) ->
- ?line {reply, true} = tuple_with_case(),
+ {reply, true} = tuple_with_case(),
ok.
tuple_with_case() ->
@@ -280,21 +306,21 @@ foo() -> ignored.
%% Test to build a tuple in a guard.
tuple_in_guard(Config) when is_list(Config) ->
- ?line Tuple1 = id({a,b}),
- ?line Tuple2 = id({a,b,c}),
- ?line if
- Tuple1 == {element(1, Tuple2),element(2, Tuple2)} ->
- ok;
- true ->
- ?line test_server:fail()
- end,
- ?line if
- Tuple2 == {element(1, Tuple2),element(2, Tuple2),
- element(3, Tuple2)} ->
- ok;
- true ->
- ?line test_server:fail()
- end,
+ Tuple1 = id({a,b}),
+ Tuple2 = id({a,b,c}),
+ if
+ Tuple1 == {element(1, Tuple2),element(2, Tuple2)} ->
+ ok;
+ true ->
+ test_server:fail()
+ end,
+ if
+ Tuple2 == {element(1, Tuple2),element(2, Tuple2),
+ element(3, Tuple2)} ->
+ ok;
+ true ->
+ test_server:fail()
+ end,
ok.
%% Use this function to avoid compile-time evaluation of an expression.
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-10 08:41:27 +0000