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Fixed misaligned structure cast

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zmq_event_t is often padded (due to a uint16_t as its first member), and thus you cannot re-interpret bytewise packed message buffers as zmq_event_t, it must be read manually. This was resulting in the value always being garbage, which is troublesome if you wish to inspect a SOCKET, for example.
This commit is contained in:
Justin Boswell 2014-08-06 14:49:59 -04:00
parent ee47ae4cdd
commit 0c0f3ae451
1 changed files with 5 additions and 1 deletions
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6
zmq.hpp
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@ -492,7 +492,11 @@ namespace zmq
if (rc == -1 && zmq_errno() == ETERM) if (rc == -1 && zmq_errno() == ETERM)
break; break;
assert (rc != -1); assert (rc != -1);
zmq_event_t* event = static_cast<zmq_event_t*>(zmq_msg_data (&eventMsg)); const char* data = static_cast<const char*>(zmq_msg_data(&eventMsg));
zmq_event_t msgEvent;
msgEvent.event = *(uint16_t*)data; data += sizeof(uint16_t);
msgEvent.value = *(int32_t*)data;
zmq_event_t* event = &msgEvent;
#ifdef ZMQ_NEW_MONITOR_EVENT_LAYOUT #ifdef ZMQ_NEW_MONITOR_EVENT_LAYOUT
zmq_msg_t addrMsg; zmq_msg_t addrMsg;