From: Andrew Tridgell <tridge@samba.org>
Date: Tue, 25 Jun 1996 04:16:02 +0000 (+0000)
Subject: paranoid check for null buffer in unmap
X-Git-Url: https://mattmccutchen.net/rsync/rsync.git/commitdiff_plain/84664c1029ffbaefeed5b3f169f51bf87acfeeca?hp=981791bd45b0a784be79661b45eba2a537cea2fe

paranoid check for null buffer in unmap
---

diff --git a/util.c b/util.c
index ad4dec95..4da0931a 100644
--- a/util.c
+++ b/util.c
@@ -112,7 +112,7 @@ char *map_file(int fd,off_t len)
 
 void unmap_file(char *buf,off_t len)
 {
-  if (len > 0)
+  if (len > 0 && buf)
     munmap(buf,len);
 }