From 8b428cf0f7ce5489fbdf4640a1dd36357f3dc5f0 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];