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-5.5.0~12^2~15
X-Git-Url: https://git.octo.it/?p=collectd.git;a=commitdiff_plain;h=7217dd3b1beba4ebecf44840582656458ddf2969

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 470fbb8d..dfdef611 100644
--- a/src/utils_latency.c
+++ b/src/utils_latency.c
@@ -227,7 +227,7 @@ 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. */