From 7f74854bad25fa401cb3e739f5aeb269efd1555f Mon Sep 17 00:00:00 2001
From: Jiajie Chen <c@jia.je>
Date: Wed, 18 Jan 2023 00:16:21 +0800
Subject: [PATCH] Check if h_addr non-null before memcpy

It triggered segfaults on Fedora 37 CI.
---
 arg.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arg.c b/arg.c
index d001303..4e906e9 100644
--- a/arg.c
+++ b/arg.c
@@ -2471,7 +2471,7 @@ lkup_hostnm(hn, n)
 	he = gethostbyname(hn);
 #endif	/* defined(HASIPv6) */
 
-	if (!he)
+	if (!he || !he->h_addr)
 	    return(he);
 /*
  * Copy first hostname structure address to destination structure.
-- 
2.27.0

