From cc8a0f898b0aa881064da23dba23f183b13e3195 Mon Sep 17 00:00:00 2001
From: antirez <antirez@metal.(none)>
Date: Fri, 13 May 2011 11:42:02 +0200
Subject: [PATCH] Fix for DEBUG DIGEST, key may expire on lookup

---
 src/debug.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/debug.c b/src/debug.c
index 16ca27a1..30ae08e6 100644
--- a/src/debug.c
+++ b/src/debug.c
@@ -101,6 +101,11 @@ void computeDatasetDigest(unsigned char *final) {
 
             /* Make sure the key is loaded if VM is active */
             o = lookupKeyRead(db,keyobj);
+            if (o == NULL) {
+                /* Key expired on lookup? Try the next one. */
+                decrRefCount(keyobj);
+                continue;
+            }
 
             aux = htonl(o->type);
             mixDigest(digest,&aux,sizeof(aux));