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authorSverker Eriksson <[email protected]>2018-05-17 12:19:38 +0200
committerGitHub <[email protected]>2018-05-17 12:19:38 +0200
commit759af43a8213f6c0b39a76ae062a89b726cd4c25 (patch)
tree949a150dc6f6decf59c81eb68bf345dfd16f6b45 /erts/emulator
parentdaf8172b510c319fab74f77e438eae3518812543 (diff)
parentd7bacbc798d608f259eb2faaaf194cb9df323018 (diff)
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Merge PR-1819 from sverker/enif_binary_to_term-bug/OTP-15080
Fix bug in enif_binary_to_term for immediates
Diffstat (limited to 'erts/emulator')
-rw-r--r--erts/emulator/beam/erl_nif.c6
-rw-r--r--erts/emulator/test/nif_SUITE.erl17
-rw-r--r--erts/emulator/test/nif_SUITE_data/nif_SUITE.c10
3 files changed, 23 insertions, 10 deletions
diff --git a/erts/emulator/beam/erl_nif.c b/erts/emulator/beam/erl_nif.c
index e208792868..0fbf0eb03a 100644
--- a/erts/emulator/beam/erl_nif.c
+++ b/erts/emulator/beam/erl_nif.c
@@ -1255,8 +1255,10 @@ size_t enif_binary_to_term(ErlNifEnv *dst_env,
if (is_non_value(*term)) {
return 0;
}
- erts_factory_close(&factory);
- cache_env(dst_env);
+ if (size > 0) {
+ erts_factory_close(&factory);
+ cache_env(dst_env);
+ }
ASSERT(bp > data);
return bp - data;
diff --git a/erts/emulator/test/nif_SUITE.erl b/erts/emulator/test/nif_SUITE.erl
index df521311e3..100fa006e7 100644
--- a/erts/emulator/test/nif_SUITE.erl
+++ b/erts/emulator/test/nif_SUITE.erl
@@ -2663,16 +2663,23 @@ nif_term_to_binary(Config) ->
nif_binary_to_term(Config) ->
ensure_lib_loaded(Config),
- T = {#{ok => nok}, <<0:8096>>, lists:seq(1,100)},
+ BigMap = maps:from_list([{I,-I} || I <- lists:seq(1,100)]),
+ [nif_binary_to_term_do(T)
+ || T <- [{#{ok => nok}, <<0:8096>>, lists:seq(1,100)},
+ atom, 42, self(), BigMap]],
+ ok.
+
+nif_binary_to_term_do(T) ->
+ Dummy = [true|false],
Bin = term_to_binary(T),
Len = byte_size(Bin),
- {Len,T} = binary_to_term_nif(Bin, undefined, 0),
+ {Len,T,Dummy} = binary_to_term_nif(Bin, undefined, 0),
Len = binary_to_term_nif(Bin, self(), 0),
- T = receive M -> M after 1000 -> timeout end,
+ {T,Dummy} = receive M -> M after 1000 -> timeout end,
- {Len, T} = binary_to_term_nif(Bin, undefined, ?ERL_NIF_BIN2TERM_SAFE),
+ {Len,T,Dummy} = binary_to_term_nif(Bin, undefined, ?ERL_NIF_BIN2TERM_SAFE),
false = binary_to_term_nif(<<131,100,0,14,"undefined_atom">>,
- undefined, ?ERL_NIF_BIN2TERM_SAFE),
+ undefined, ?ERL_NIF_BIN2TERM_SAFE),
false = binary_to_term_nif(Bin, undefined, 1),
ok.
diff --git a/erts/emulator/test/nif_SUITE_data/nif_SUITE.c b/erts/emulator/test/nif_SUITE_data/nif_SUITE.c
index a0aef60cf1..155bda6df0 100644
--- a/erts/emulator/test/nif_SUITE_data/nif_SUITE.c
+++ b/erts/emulator/test/nif_SUITE_data/nif_SUITE.c
@@ -2405,7 +2405,7 @@ static ERL_NIF_TERM term_to_binary(ErlNifEnv* env, int argc, const ERL_NIF_TERM
static ERL_NIF_TERM binary_to_term(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
{
ErlNifBinary bin;
- ERL_NIF_TERM term, ret_term;
+ ERL_NIF_TERM term, dummy, ret_term;
ErlNifPid pid;
ErlNifEnv *msg_env = env;
unsigned int opts;
@@ -2418,6 +2418,9 @@ static ERL_NIF_TERM binary_to_term(ErlNifEnv* env, int argc, const ERL_NIF_TERM
|| !enif_get_uint(env, argv[2], &opts))
return enif_make_badarg(env);
+ /* build dummy heap term first to provoke OTP-15080 */
+ dummy = enif_make_list_cell(msg_env, atom_true, atom_false);
+
ret = enif_binary_to_term(msg_env, bin.data, bin.size, &term,
(ErlNifBinaryToTerm)opts);
if (!ret)
@@ -2425,11 +2428,12 @@ static ERL_NIF_TERM binary_to_term(ErlNifEnv* env, int argc, const ERL_NIF_TERM
ret_term = enif_make_uint64(env, ret);
if (msg_env != env) {
- enif_send(env, &pid, msg_env, term);
+ enif_send(env, &pid, msg_env,
+ enif_make_tuple2(msg_env, term, dummy));
enif_free_env(msg_env);
return ret_term;
} else {
- return enif_make_tuple2(env, ret_term, term);
+ return enif_make_tuple3(env, ret_term, term, dummy);
}
}