From f7ba0834716cf2c2e7f17f30914c74218793b37d Mon Sep 17 00:00:00 2001
From: markj <markj@FreeBSD.org>
Date: Tue, 2 Aug 2016 21:17:34 +0000
Subject: MFC r301710: Fix an infinite loop in setnetgrent(3) with NIS
 netgroups.

---
 lib/libc/gen/getnetgrent.c | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'lib/libc')

diff --git a/lib/libc/gen/getnetgrent.c b/lib/libc/gen/getnetgrent.c
index 8aa75e2..a8cc4c9 100644
--- a/lib/libc/gen/getnetgrent.c
+++ b/lib/libc/gen/getnetgrent.c
@@ -559,6 +559,10 @@ read_for_group(const char *group)
 					continue;
 				}
 			}
+			if (strlen(result) == 0) {
+				free(result);
+				return (NULL);
+			}
 			snprintf(line, LINSIZ, "%s %s", group, result);
 			free(result);
 		}
-- 
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