From 3dbf0eac70a06df8b3cf9a6aa2e99b3f6b4950f0 Mon Sep 17 00:00:00 2001
From: Alex 'AdUser' Z <ad_user@runbox.com>
Date: Thu, 1 Sep 2016 22:48:16 +1000
Subject: [PATCH] * fix segfault in preg filter

---
 src/filters/preg.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/filters/preg.c b/src/filters/preg.c
index 68dc01e..d3f3d0a 100644
--- a/src/filters/preg.c
+++ b/src/filters/preg.c
@@ -141,7 +141,7 @@ match(cfg_t *cfg, const char *line, char *buf, size_t buf_size) {
     assert(buf_size > match_len);
     memcpy(buf, &line[match[1].rm_so], match_len);
     buf[match_len] = '\0';
-    buf[buf_size]  = '\0';
+    buf[buf_size - 1]  = '\0';
     return true;
   }