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-rw-r--r--erts/emulator/test/mtx_SUITE_data/mtx_SUITE.c46
-rw-r--r--erts/emulator/test/nif_SUITE_data/nif_SUITE.c38
2 files changed, 49 insertions, 35 deletions
diff --git a/erts/emulator/test/mtx_SUITE_data/mtx_SUITE.c b/erts/emulator/test/mtx_SUITE_data/mtx_SUITE.c
index 818023211c..0e4065c26b 100644
--- a/erts/emulator/test/mtx_SUITE_data/mtx_SUITE.c
+++ b/erts/emulator/test/mtx_SUITE_data/mtx_SUITE.c
@@ -552,13 +552,19 @@ create_rwlock(ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[])
static ERL_NIF_TERM
rwlock_op(ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[])
{
- rwlock_resource_t *rwlr;
+ /*
+ * Use a union for pointer type conversion to avoid compiler warnings
+ * about strict-aliasing violations with gcc-4.1. gcc >= 4.2 does not
+ * emit the warning.
+ * TODO: Reconsider use of union once gcc-4.1 is obsolete?
+ */
+ union { void* vp; rwlock_resource_t *p; } rwlr;
int blocking, write, wait_locked, wait_unlocked;
if (argc != 5)
goto badarg;
- if (!enif_get_resource(env, argv[0], enif_priv_data(env), (void **) &rwlr))
+ if (!enif_get_resource(env, argv[0], enif_priv_data(env), &rwlr.vp))
goto badarg;
blocking = get_bool(env, argv[1]);
@@ -581,22 +587,22 @@ rwlock_op(ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[])
if (write) {
if (blocking)
- RWMUTEX_WLOCK(rwlr->rwlock);
+ RWMUTEX_WLOCK(rwlr.p->rwlock);
else
- while (EBUSY == RWMUTEX_TRYWLOCK(rwlr->rwlock));
- if (rwlr->lock_check) {
- ASSERT(!ATOMIC_READ(&rwlr->is_locked));
- ATOMIC_SET(&rwlr->is_locked, -1);
+ while (EBUSY == RWMUTEX_TRYWLOCK(rwlr.p->rwlock));
+ if (rwlr.p->lock_check) {
+ ASSERT(!ATOMIC_READ(&rwlr.p->is_locked));
+ ATOMIC_SET(&rwlr.p->is_locked, -1);
}
}
else {
if (blocking)
- RWMUTEX_RLOCK(rwlr->rwlock);
+ RWMUTEX_RLOCK(rwlr.p->rwlock);
else
- while (EBUSY == RWMUTEX_TRYRLOCK(rwlr->rwlock));
- if (rwlr->lock_check) {
- ASSERT(ATOMIC_READ(&rwlr->is_locked) >= 0);
- ATOMIC_INC(&rwlr->is_locked);
+ while (EBUSY == RWMUTEX_TRYRLOCK(rwlr.p->rwlock));
+ if (rwlr.p->lock_check) {
+ ASSERT(ATOMIC_READ(&rwlr.p->is_locked) >= 0);
+ ATOMIC_INC(&rwlr.p->is_locked);
}
}
@@ -604,18 +610,18 @@ rwlock_op(ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[])
milli_sleep(wait_locked);
if (write) {
- if (rwlr->lock_check) {
- ASSERT(ATOMIC_READ(&rwlr->is_locked) == -1);
- ATOMIC_SET(&rwlr->is_locked, 0);
+ if (rwlr.p->lock_check) {
+ ASSERT(ATOMIC_READ(&rwlr.p->is_locked) == -1);
+ ATOMIC_SET(&rwlr.p->is_locked, 0);
}
- RWMUTEX_WUNLOCK(rwlr->rwlock);
+ RWMUTEX_WUNLOCK(rwlr.p->rwlock);
}
else {
- if (rwlr->lock_check) {
- ASSERT(ATOMIC_READ(&rwlr->is_locked) > 0);
- ATOMIC_DEC(&rwlr->is_locked);
+ if (rwlr.p->lock_check) {
+ ASSERT(ATOMIC_READ(&rwlr.p->is_locked) > 0);
+ ATOMIC_DEC(&rwlr.p->is_locked);
}
- RWMUTEX_RUNLOCK(rwlr->rwlock);
+ RWMUTEX_RUNLOCK(rwlr.p->rwlock);
}
if (wait_unlocked)
diff --git a/erts/emulator/test/nif_SUITE_data/nif_SUITE.c b/erts/emulator/test/nif_SUITE_data/nif_SUITE.c
index bdf1549862..cf2ec4aaf0 100644
--- a/erts/emulator/test/nif_SUITE_data/nif_SUITE.c
+++ b/erts/emulator/test/nif_SUITE_data/nif_SUITE.c
@@ -41,7 +41,18 @@ typedef struct
CallInfo* call_history;
NifModPrivData* nif_mod;
union { ErlNifResourceType* t; long l; } rt_arr[2];
-}PrivData;
+} PrivData;
+
+/*
+ * Use a union for pointer type conversion to avoid compiler warnings
+ * about strict-aliasing violations with gcc-4.1. gcc >= 4.2 does not
+ * emit the warning.
+ * TODO: Reconsider use of union once gcc-4.1 is obsolete?
+ */
+typedef union {
+ void* vp;
+ struct make_term_info* p;
+} mti_t;
void add_call(ErlNifEnv* env, PrivData* data, const char* func_name)
{
@@ -707,7 +718,7 @@ static ERL_NIF_TERM get_resource_type(ErlNifEnv* env, int argc, const ERL_NIF_TE
static ERL_NIF_TERM alloc_resource(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
{
ErlNifBinary data_bin;
- union { ErlNifResourceType* t; long l;} type;
+ union { ErlNifResourceType* t; long l; } type;
union { void* p; long l;} data;
if (!enif_get_long(env, argv[0], &type.l)
|| !enif_inspect_binary(env, argv[1], &data_bin)
@@ -731,7 +742,7 @@ static ERL_NIF_TERM make_resource(ErlNifEnv* env, int argc, const ERL_NIF_TERM a
static ERL_NIF_TERM make_new_resource(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
{
ErlNifBinary data_bin;
- union { ErlNifResourceType* t; long l;} type;
+ union { ErlNifResourceType* t; long l; } type;
void* data;
ERL_NIF_TERM ret;
if (!enif_get_long(env, argv[0], &type.l)
@@ -749,7 +760,7 @@ static ERL_NIF_TERM make_new_resource(ErlNifEnv* env, int argc, const ERL_NIF_TE
static ERL_NIF_TERM make_new_resource_binary(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
{
ErlNifBinary data_bin;
- union { struct binary_resource* p; void* vp; long l;} br;
+ union { struct binary_resource* p; void* vp; long l; } br;
void* buf;
ERL_NIF_TERM ret;
if (!enif_inspect_binary(env, argv[0], &data_bin)
@@ -1269,10 +1280,7 @@ static void msgenv_dtor(ErlNifEnv* env, void* obj)
static ERL_NIF_TERM clear_msgenv(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
{
- union {
- void* vp;
- struct make_term_info* p;
- }mti;
+ mti_t mti;
if (!enif_get_resource(env, argv[0], msgenv_resource_type, &mti.vp)) {
return enif_make_badarg(env);
}
@@ -1285,7 +1293,7 @@ static ERL_NIF_TERM clear_msgenv(ErlNifEnv* env, int argc, const ERL_NIF_TERM ar
static ERL_NIF_TERM grow_blob(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
{
- union { void* vp; struct make_term_info* p; }mti;
+ mti_t mti;
ERL_NIF_TERM term;
if (!enif_get_resource(env, argv[0], msgenv_resource_type, &mti.vp)
|| (argc>2 && !enif_get_uint(env,argv[2], &mti.p->n))) {
@@ -1301,7 +1309,7 @@ static ERL_NIF_TERM grow_blob(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[
static ERL_NIF_TERM send_blob(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
{
- union { void* vp; struct make_term_info* p; }mti;
+ mti_t mti;
ErlNifPid to;
ERL_NIF_TERM copy;
int res;
@@ -1316,7 +1324,7 @@ static ERL_NIF_TERM send_blob(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[
static ERL_NIF_TERM send3_blob(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
{
- union { void* vp; struct make_term_info* p; }mti;
+ mti_t mti;
ErlNifPid to;
ERL_NIF_TERM copy;
int res;
@@ -1334,7 +1342,7 @@ static ERL_NIF_TERM send3_blob(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv
void* threaded_sender(void *arg)
{
- union { void* vp; struct make_term_info* p; }mti;
+ mti_t mti;
mti.vp = arg;
enif_mutex_lock(mti.p->mtx);
@@ -1349,7 +1357,7 @@ void* threaded_sender(void *arg)
static ERL_NIF_TERM send_blob_thread(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
{
- union { void* vp; struct make_term_info* p; }mti;
+ mti_t mti;
ERL_NIF_TERM copy;
if (!enif_get_resource(env, argv[0], msgenv_resource_type, &mti.vp)
|| !enif_get_local_pid(env,argv[1], &mti.p->to_pid)) {
@@ -1375,7 +1383,7 @@ static ERL_NIF_TERM send_blob_thread(ErlNifEnv* env, int argc, const ERL_NIF_TER
static ERL_NIF_TERM join_send_thread(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
{
- union { void* vp; struct make_term_info* p; }mti;
+ mti_t mti;
int err;
if (!enif_get_resource(env, argv[0], msgenv_resource_type, &mti.vp)) {
return enif_make_badarg(env);
@@ -1392,7 +1400,7 @@ static ERL_NIF_TERM join_send_thread(ErlNifEnv* env, int argc, const ERL_NIF_TER
static ERL_NIF_TERM copy_blob(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
{
- union { void* vp; struct make_term_info* p; }mti;
+ mti_t mti;
if (!enif_get_resource(env, argv[0], msgenv_resource_type, &mti.vp)) {
return enif_make_badarg(env);
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-02 14:55:47 +0000