Segmentation fault when creating producer

[xhcqwlgithub]

The code is as follows:

79 PropertyConfigurator::doConfigure(log_str);
80 RdKafka::Conf *gconf = RdKafka::Conf::create(RdKafka::Conf::CONF_GLOBAL);
81 RdKafka::Conf *tconf = RdKafka::Conf::create(RdKafka::Conf::CONF_TOPIC);
82
83 gconf->set("metadata.broker.list", "10.11.196.115:9092", errstr);
84 producer_ = RdKafka::Producer::create(gconf, errstr);

the information in the stack:

program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0x41401940 (LWP 18931)]
RdKafka::socket_cb_trampoline (domain=2, type=1, protocol=6, opaque=)
at thirdparty/librdkafka/src-cpp/HandleImpl.cpp:92
92 return handle->socket_cb_->socket_cb(domain, type, protocol);
(gdb) bt
#0 RdKafka::socket_cb_trampoline (domain=2, type=1, protocol=6, opaque=)

at thirdparty/librdkafka/src-cpp/HandleImpl.cpp:92

#1 0x00000000005a93e0 in rd_kafka_broker_connect (arg=)

at thirdparty/librdkafka/src/rdkafka_broker.c:1543

#2 rd_kafka_broker_thread_main (arg=)

at thirdparty/librdkafka/src/rdkafka_broker.c:3972

#3 0x000000366100673d in start_thread () from /lib64/libpthread.so.0
#4 0x00000036604d3f6d in clone () from /lib64/libc.so.6

And when I added a constructor to class ConfImpl, the error had not happen again.
the constructor code is as follows:

135 class ConfImpl : public Conf {
136 public:
137 ConfImpl()
138 :dr_cb_(NULL),
139 event_cb_(NULL),
140 socket_cb_(NULL),
141 open_cb_(NULL),
142 partitioner_cb_(NULL){}
143 ~ConfImpl () {
144 if (rk_conf_)
145 rd_kafka_conf_destroy(rk_conf_);
146 else
147 rd_kafka_topic_conf_destroy(rkt_conf_);
148 }
149

[edenhill]

Sorry for not responding to this earlier, I lost it somehow.

Would you care to submit a pull request for your fix?

[edenhill]

Fixed in master branch.
This also changes the Conf semantics:
the application may now reuse Conf objects after Topic/Producer/Consumer ::create calls and must delete the Conf objects itself.