From 222bf2cfd60c50abbe338c1e839a43609086829f Mon Sep 17 00:00:00 2001
From: claudio <claudio@openbsd.org>
Date: Thu, 9 Jun 2022 17:33:47 +0000
Subject: [PATCH] Properly error out if a variable does not exist. Need to pass
 back ERROR to yylex() to make the parser fail nicely. OK tb@

---
 usr.sbin/bgpd/parse.y | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/usr.sbin/bgpd/parse.y b/usr.sbin/bgpd/parse.y
index dfd00462759..89b5c672d88 100644
--- a/usr.sbin/bgpd/parse.y
+++ b/usr.sbin/bgpd/parse.y
@@ -1,4 +1,4 @@
-/*	$OpenBSD: parse.y,v 1.428 2022/06/02 11:12:47 claudio Exp $ */
+/*	$OpenBSD: parse.y,v 1.429 2022/06/09 17:33:47 claudio Exp $ */
 
 /*
  * Copyright (c) 2002, 2003, 2004 Henning Brauer <henning@openbsd.org>
@@ -3248,8 +3248,10 @@ expand_macro(void)
 		break;
 	}
 	val = symget(buf);
-	if (val == NULL)
+	if (val == NULL) {
 		yyerror("macro '%s' not defined", buf);
+		return (ERROR);
+	}
 	p = val + strlen(val) - 1;
 	lungetc(DONE_EXPAND);
 	while (p >= val) {
-- 
2.20.1