From 91d090167d30c90a7f4daff1e468ad7d0f717049 Mon Sep 17 00:00:00 2001
From: Tobias Oetiker <tobi@oetiker.ch>
Date: Wed, 23 Nov 2011 07:05:03 +0100
Subject: make sure we stay within the bounds of the array

---
 lib/Smokeping/matchers/Median.pm | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'lib')

diff --git a/lib/Smokeping/matchers/Median.pm b/lib/Smokeping/matchers/Median.pm
index 24be199..35953dd 100644
--- a/lib/Smokeping/matchers/Median.pm
+++ b/lib/Smokeping/matchers/Median.pm
@@ -85,6 +85,9 @@ sub Test($$)
     my $ac = $self->{param}{old};
     my $bc = $self->{param}{new};
     my $cc = $ac +$bc;
+    my $count = scalar @{$data->{rtt};
+    $cc = $count if $count < $cc;
+    $bc = $count if $count < $bc;
     my $oldm = robust_median(@{$data->{rtt}}[-$cc..-$bc-1]);
     my $newm = robust_median(@{$data->{rtt}}[-$bc..-1]);
     return abs($oldm-$newm) > $self->{param}{diff};
-- 
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