udp_connection: check if entry is valid first

mavlink · Feb 19, 2019 · 135ee9a · 135ee9a
1 parent ea81a2f
commit 135ee9a
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/core/udp_connection.cpp b/core/udp_connection.cpp
@@ -135,7 +135,8 @@ bool UdpConnection::send_message(const mavlink_message_t &message)
     // on the matching link.
     const mavlink_msg_entry_t *entry = mavlink_get_msg_entry(message.msgid);
     const uint8_t target_system_id =
-        reinterpret_cast<const uint8_t *>(message.payload64)[entry->target_system_ofs];
+        (entry ? reinterpret_cast<const uint8_t *>(message.payload64)[entry->target_system_ofs] :
+                 0);
 
     bool send_successful = true;
     for (auto &remote : _remotes) {