From 7e6c9ef8819a071679f8dd18035dbbe2455c7b12 Mon Sep 17 00:00:00 2001
From: Valentino Geron <valentino@redislabs.com>
Date: Sun, 23 Aug 2020 12:19:41 +0300
Subject: [PATCH] Assert that setDeferredAggregateLen isn't called with
 negative value

In case the redis is about to return broken reply we want to crash
with assert so that we are notified about the bug. see #7687.
---
 src/networking.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/networking.c b/src/networking.c
index a6786492b..24424ab90 100644
--- a/src/networking.c
+++ b/src/networking.c
@@ -492,6 +492,7 @@ void *addReplyDeferredLen(client *c) {
 
 /* Populate the length object and try gluing it to the next chunk. */
 void setDeferredAggregateLen(client *c, void *node, long length, char prefix) {
+    serverAssert(length >= 0);
     listNode *ln = (listNode*)node;
     clientReplyBlock *next;
     char lenstr[128];