From ee4c355a3e5f46ed9ce5749228f9c15e2b1be427 Mon Sep 17 00:00:00 2001
From: antirez <antirez@gmail.com>
Date: Thu, 6 Dec 2018 11:33:58 +0100
Subject: [PATCH] RESP3: hiredis: implement null type.

---
 deps/hiredis/read.c | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/deps/hiredis/read.c b/deps/hiredis/read.c
index 2726d4481..32f1c9220 100644
--- a/deps/hiredis/read.c
+++ b/deps/hiredis/read.c
@@ -308,6 +308,11 @@ static int processLineItem(redisReader *r) {
             } else {
                 obj = (void*)REDIS_REPLY_DOUBLE;
             }
+        } else if (cur->type == REDIS_REPLY_NIL) {
+            if (r->fn && r->fn->createNil)
+                obj = r->fn->createNil(cur);
+            else
+                obj = (void*)REDIS_REPLY_NIL;
         } else {
             /* Type will be error or status. */
             if (r->fn && r->fn->createString)
@@ -493,6 +498,9 @@ static int processItem(redisReader *r) {
             case ',':
                 cur->type = REDIS_REPLY_DOUBLE;
                 break;
+            case '_':
+                cur->type = REDIS_REPLY_NIL;
+                break;
             case '$':
                 cur->type = REDIS_REPLY_STRING;
                 break;
@@ -521,6 +529,7 @@ static int processItem(redisReader *r) {
     case REDIS_REPLY_STATUS:
     case REDIS_REPLY_INTEGER:
     case REDIS_REPLY_DOUBLE:
+    case REDIS_REPLY_NIL:
         return processLineItem(r);
     case REDIS_REPLY_STRING:
         return processBulkItem(r);