From: Wilfried Goesgens <dothebart@citadel.org>
Date: Tue, 29 Jul 2014 11:58:23 +0000 (+0200)
Subject: Statsd: avoid doing a division by zero when calculating the percentile with an empty... 
X-Git-Tag: collectd-5.5.0~256^2
X-Git-Url: https://git.tokkee.org/?a=commitdiff_plain;h=60dffffa1cfc945160a1b85930117d69c3fd98ad;p=collectd.git

Statsd: avoid doing a division by zero when calculating the percentile with an empty histogram.
---

diff --git a/src/utils_latency.c b/src/utils_latency.c
index bfe91fd8..7699f570 100644
--- a/src/utils_latency.c
+++ b/src/utils_latency.c
@@ -146,7 +146,7 @@ cdtime_t latency_counter_get_percentile (latency_counter_t *lc,
   int sum;
   size_t i;
 
-  if ((lc == NULL) || !((percent > 0.0) && (percent < 100.0)))
+  if ((lc == NULL) || (lc->num == 0) || !((percent > 0.0) && (percent < 100.0)))
     return (0);
 
   /* Find index i so that at least "percent" events are within i+1 ms. */