From 3c9b817217b03d0377bed3857f0159a473711490 Mon Sep 17 00:00:00 2001
From: Jan-Erik Rediger <janerik@fnordig.de>
Date: Fri, 27 Jan 2017 16:23:15 +0100
Subject: [PATCH] Don't divide by zero

Previously Redis crashed on `MEMORY DOCTOR` when it has no slaves attached.

Fixes #3783
---
 src/object.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/object.c b/src/object.c
index 90df9e38..08c9ad95 100644
--- a/src/object.c
+++ b/src/object.c
@@ -951,7 +951,7 @@ sds getMemoryDoctorReport(void) {
         }
 
         /* Slaves using more than 10 MB each? */
-        if (mh->clients_slaves / numslaves > (1024*1024*10)) {
+        if (numslaves > 0 && mh->clients_slaves / numslaves > (1024*1024*10)) {
             big_slave_buf = 1;
             num_reports++;
         }