From 7cf768fddfe03a139f269594cbbe8b18b61db0fd Mon Sep 17 00:00:00 2001
From: Con Kolivas <kernel@kolivas.org>
Date: Fri, 25 Apr 2014 20:29:35 +1000
Subject: [PATCH] Cope with the unlikely event we have been requested a mining
 subscribe before any work templates have been generated

---
 src/stratifier.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/src/stratifier.c b/src/stratifier.c
index 60c33f5d..02c8569f 100644
--- a/src/stratifier.c
+++ b/src/stratifier.c
@@ -445,6 +445,7 @@ static json_t *parse_subscribe(int client_id, json_t *params_val)
 	char *enonce1;
 	int arr_size;
 	json_t *ret;
+	int n2len;
 
 	if (unlikely(!json_is_array(params_val)))
 		return json_string("params not an array");
@@ -474,7 +475,11 @@ static json_t *parse_subscribe(int client_id, json_t *params_val)
 	ck_runlock(&instance_lock);
 
 	ck_rlock(&workbase_lock);
-	ret = json_pack("[[s,s],s,i]", "mining.notify", enonce1, enonce1, workbases->enonce2varlen);
+	if (likely(workbases))
+		n2len = workbases->enonce2varlen;
+	else
+		n2len = 8;
+	ret = json_pack("[[s,s],s,i]", "mining.notify", enonce1, enonce1, n2len);
 	ck_runlock(&workbase_lock);
 
 	free(enonce1);