Improve API message handler re-registration check
@@ -671,9 +671,11 @@ vl_msg_api_config (vl_msg_api_msg_config_t * c)
foreach_msg_api_vector;
#undef _
- if (am->msg_names[c->id])
- clib_warning ("BUG: multiple registrations of 'vl_api_%s_t_handler'",
- c->name);
+ if (am->msg_handlers[c->id] && am->msg_handlers[c->id] != c->handler)
+ clib_warning
+ ("BUG: re-registering 'vl_api_%s_t_handler'."
+ "Handler was %llx, replaced by %llx",
+ c->name, am->msg_handlers[c->id], c->handler);
am->msg_names[c->id] = c->name;
am->msg_handlers[c->id] = c->handler;
