rrd plugin: Fix writing of long values.

[collectd.git] / src / rrdtool.c

diff --git a/src/rrdtool.c b/src/rrdtool.c
index 5f42561..558b800 100644 (file)
--- a/src/rrdtool.c
+++ b/src/rrdtool.c
@@ -803,7 +803,7 @@ static int rrd_write(const data_set_t *ds, const value_list_t *vl,
   if (value_list_to_filename(filename, sizeof(filename), vl) != 0)
     return -1;
 
-  char values[32 * ds->ds_num];
+  char values[32 * (ds->ds_num + 1)];
   if (value_list_to_string(values, sizeof(values), ds, vl) != 0)
     return -1;