From 5cc1ea1df23e3b20c65424145c91a88172c9ef4a Mon Sep 17 00:00:00 2001
From: Chris Hofstaedtler <chris.hofstaedtler@deduktiva.com>
Date: Sat, 20 Jan 2018 00:57:51 +0100
Subject: [PATCH] recursor: abort when unused arguments remain

Copied this over from receiver.cc, as @ahupowerdns pointed out that Auth handles this.
---
 pdns/pdns_recursor.cc | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/pdns/pdns_recursor.cc b/pdns/pdns_recursor.cc
index d96a64be9..63b3db1a3 100644
--- a/pdns/pdns_recursor.cc
+++ b/pdns/pdns_recursor.cc
@@ -3435,6 +3435,11 @@ int main(int argc, char **argv)
     }
     cleanSlashes(configname);
 
+    if(!::arg().getCommands().empty()) {
+      cerr<<"Fatal: non-option on the command line, perhaps a '--setting=123' statement missed the '='?"<<endl;
+      exit(99);
+    }
+
     if(::arg().mustDo("config")) {
       cout<<::arg().configstring()<<endl;
       exit(0);
-- 
2.49.0