From 670586715a19e7aff9b3af793a7a9b334b418752 Mon Sep 17 00:00:00 2001
From: antirez <antirez@gmail.com>
Date: Tue, 20 Sep 2016 17:22:30 +0200
Subject: [PATCH] dict.c: fix dictGenericDelete() return ASAP condition.

Recently we moved the "return ASAP" condition for the Delete() function
from checking .size to checking .used, which is smarter, however while
testing the first table alone always works to ensure the dict is totally
emtpy, when we test the .size field, testing .used requires testing both
T0 and T1, since a rehashing could be in progress.
---
 src/dict.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/dict.c b/src/dict.c
index 04dfae6cc..b9b2390f1 100644
--- a/src/dict.c
+++ b/src/dict.c
@@ -415,7 +415,8 @@ static dictEntry *dictGenericDelete(dict *d, const void *key, int nofree) {
     dictEntry *he, *prevHe;
     int table;
 
-    if (d->ht[0].used == 0) return NULL;
+    if (d->ht[0].used == 0 && d->ht[1].used == 0) return NULL;
+
     if (dictIsRehashing(d)) _dictRehashStep(d);
     h = dictHashKey(d, key);