From 74ac0a89d27d1bff7238ecb14dd0a5009c2f479b Mon Sep 17 00:00:00 2001
From: Ulrich Drepper <drepper@redhat.com>
Date: Sat, 19 Nov 2005 17:09:03 +0000
Subject: [PATCH] (nscd_gethst_r): Avoid unnecesary read call if there are no
 aliases.

---
 nscd/nscd_gethst_r.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/nscd/nscd_gethst_r.c b/nscd/nscd_gethst_r.c
index 70ee38b..9fa10e2 100644
--- a/nscd/nscd_gethst_r.c
+++ b/nscd/nscd_gethst_r.c
@@ -328,8 +328,9 @@ nscd_gethst_r (const char *key, size_t keylen, request_type type,
       /* And finally read the aliases.  */
       if (addr_list == NULL)
 	{
-	  if ((size_t) __readall (sock, resultbuf->h_aliases[0], total_len)
-	      == total_len)
+	  if (total_len == 0
+	      || ((size_t) __readall (sock, resultbuf->h_aliases[0], total_len)
+		  == total_len))
 	    {
 	      retval = 0;
 	      *result = resultbuf;
-- 
2.7.4