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authorBjörn-Egil Dahlberg <[email protected]>2012-12-12 15:29:08 +0100
committerBjörn-Egil Dahlberg <[email protected]>2012-12-12 15:29:08 +0100
commit079411c887aa0971215ccb366fb83d7e56ec7777 (patch)
tree6e6a174d6fc6866c36c2c4a9d7c6f73fb83aba75 /erts/emulator/beam/bif.c
parent17532edb1301f52c1dbc37955a527bb1da333b4d (diff)
parent9c3451fdca9598772572f59bb594245e1c78137e (diff)
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Merge branch 'egil/enforce-tuple-specification-size/OTP-10633'
* egil/enforce-tuple-specification-size/OTP-10633: erts: Use memcpy instead of while in setelement/3 test: Refactor away ?line macro in tuple_SUITE erts: Enforce tuple max size on BIFs erts: Define max tuple size to 24 bits
Diffstat (limited to 'erts/emulator/beam/bif.c')
-rw-r--r--erts/emulator/beam/bif.c19
1 files changed, 11 insertions, 8 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);
}