JSON.DEL makes redis to crash if empty path

[KromDaniel]

Hey,
Redis seems to crash with the empty command on JSON.DEL

Some environment information:

• go-redis/redis (client driver)
• Redis version redis_version:4.0.8, with rejson extension, running with ReJSON docker

Problem explained

I'm sending a bulk string to redis, with optional value as empty string and my redis crashes.
After debugging it a bit, this is the actual data being written to Redis:

*3
$8
JSON.DEL
$7
someKey
$0

It works (not crashing the redis) when I'm sending it with none empty string:

*3
$8
JSON.DEL
$7
someKey
$3
key

I'm debugging it my self now hopefully I'll open PR in the next few days

Thanks a lot

[itamarhaber]

Hello @KromDaniel

Thanks for finding, identifying and reporting the bug. Definitely smells ReJSON-ish to me. Need to reproduce and fix.

[github-actions]

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