Index: ignition-transport4-4.0.0/src/NodeShared.cc
===================================================================
--- ignition-transport4-4.0.0.orig/src/NodeShared.cc
+++ ignition-transport4-4.0.0/src/NodeShared.cc
@@ -92,7 +92,8 @@ bool userPass(std::string &_user, std::s
 // Helper to send messages
 int sendHelper(zmq::socket_t &_pub, const std::string &_data, int _type)
 {
-  zmq::message_t msg(_data.data(), _data.size());
+  zmq::message_t msg(_data.size());
+  memcpy(msg.data(), _data.data(), _data.size());
   return _pub.send(msg, _type);
 }
 
@@ -278,10 +279,13 @@ bool NodeShared::Publish(
   {
     // Create the messages.
     // Note that we use zero copy for passing the message data (msg2).
-    zmq::message_t msg0(_topic.data(), _topic.size()),
-                   msg1(this->myAddress.data(), this->myAddress.size()),
+    zmq::message_t msg0(_topic.size()),
+                   msg1(this->myAddress.size()),
                    msg2(_data, _dataSize, _ffn, nullptr),
-                   msg3(_msgType.data(), _msgType.size());
+                   msg3(_msgType.size());
+    memcpy(msg0.data(), _topic.data(), _topic.size());
+    memcpy(msg1.data(), this->myAddress.data(), this->myAddress.size());
+    memcpy(msg3.data(), _msgType.data(), _msgType.size());
 
     // Send the messages
     std::lock_guard<std::recursive_mutex> lock(this->mutex);